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	/**
	* simplemde v1.8.2
	* Copyright Next Step Webs, Inc.
	* @link https://github.com/NextStepWebs/simplemde-markdown-editor
	* @license MIT
	*/
	(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.SimpleMDE = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
	(function (global){

	; Typo = global.Typo = require("D:\\My Web Sites\\simplemde-markdown-editor\\node_modules\\codemirror-spell-checker\\src\\js\\typo.js");
	CodeMirror = global.CodeMirror = require("codemirror");
	; var __browserify_shim_require__=require;(function browserifyShim(module, define, require) {
	// Initialize data globally to reduce memory consumption
	var num_loaded = 0;
	var aff_loading = false;
	var dic_loading = false;
	var aff_data = "";
	var dic_data = "";
	var typo;


	CodeMirror.defineMode("spell-checker", function(config, parserConfig) {
	// Load AFF/DIC data
	if(!aff_loading){
	aff_loading = true;
	var xhr_aff = new XMLHttpRequest();
	xhr_aff.open("GET", "https://cdn.jsdelivr.net/codemirror.spell-checker/latest/en_US.aff", true);
	xhr_aff.onload = function (e) {
	if (xhr_aff.readyState === 4 && xhr_aff.status === 200) {
	aff_data = xhr_aff.responseText;
	num_loaded++;

	if(num_loaded == 2){
	typo = new Typo("en_US", aff_data, dic_data, {
	platform: 'any'
	});
	}
	}
	};
	xhr_aff.send(null);
	}

	if(!dic_loading){
	dic_loading = true;
	var xhr_dic = new XMLHttpRequest();
	xhr_dic.open("GET", "https://cdn.jsdelivr.net/codemirror.spell-checker/latest/en_US.dic", true);
	xhr_dic.onload = function (e) {
	if (xhr_dic.readyState === 4 && xhr_dic.status === 200) {
	dic_data = xhr_dic.responseText;
	num_loaded++;

	if(num_loaded == 2){
	typo = new Typo("en_US", aff_data, dic_data, {
	platform: 'any'
	});
	}
	}
	};
	xhr_dic.send(null);
	}



	// Define what separates a word
	var rx_word = "!\"#$%&()*+,-./:;<=>?@[\\]^_`{\|}~ ";


	// Create the overlay and such
	var overlay = {
	token: function(stream, state) {
	var ch = stream.peek();
	var word = "";

	if(rx_word.includes(ch)) {
	stream.next();
	return null;
	}

	while((ch = stream.peek()) != null && !rx_word.includes(ch)) {
	word += ch;
	stream.next();
	}

	if(typo && !typo.check(word))
	return "spell-error"; // CSS class: cm-spell-error

	return null;
	}
	};

	var mode = CodeMirror.getMode(
	config, config.backdrop \|\| "text/plain"
	);

	return CodeMirror.overlayMode(mode, overlay, true);
	});


	// Because some browsers don't support this functionality yet
	if(!String.prototype.includes) {
	String.prototype.includes = function() {'use strict';
	return String.prototype.indexOf.apply(this, arguments) !== -1;
	};
	}
	}).call(global, module, undefined, undefined);

	}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

	},{"D:\\My Web Sites\\simplemde-markdown-editor\\node_modules\\codemirror-spell-checker\\src\\js\\typo.js":2,"codemirror":6}],2:[function(require,module,exports){
	(function (global){
	; var __browserify_shim_require__=require;(function browserifyShim(module, exports, require, define, browserify_shim__define__module__export__) {
	'use strict';

	/**
	* Typo is a JavaScript implementation of a spellchecker using hunspell-style
	* dictionaries.
	*/

	/**
	* Typo constructor.
	*
	* @param {String} [dictionary] The locale code of the dictionary being used. e.g.,
	* "en_US". This is only used to auto-load dictionaries.
	* @param {String} [affData] The data from the dictionary's .aff file. If omitted
	* and the first argument is supplied, in "chrome" platform,
	* the .aff file will be loaded automatically from
	* lib/typo/dictionaries/[dictionary]/[dictionary].aff
	* In other platform, it will be loaded from
	* [setting.path]/dictionaries/[dictionary]/[dictionary].aff
	* @param {String} [wordsData] The data from the dictionary's .dic file. If omitted,
	* and the first argument is supplied, in "chrome" platform,
	* the .dic file will be loaded automatically from
	* lib/typo/dictionaries/[dictionary]/[dictionary].dic
	* In other platform, it will be loaded from
	* [setting.path]/dictionaries/[dictionary]/[dictionary].dic
	* @param {Object} [settings] Constructor settings. Available properties are:
	* {String} [platform]: "chrome" for Chrome Extension or other
	* value for the usual web.
	* {String} [dictionaryPath]: path to load dictionary from in non-chrome
	* environment.
	* {Object} [flags]: flag information.
	*
	*
	* @returns {Typo} A Typo object.
	*/

	var Typo = function (dictionary, affData, wordsData, settings) {
	settings = settings \|\| {};

	/ Determines the method used for auto-loading .aff and .dic files. /
	this.platform = settings.platform \|\| "chrome";

	this.dictionary = null;

	this.rules = {};
	this.dictionaryTable = {};

	this.compoundRules = [];
	this.compoundRuleCodes = {};

	this.replacementTable = [];

	this.flags = settings.flags \|\| {};

	if (dictionary) {
	this.dictionary = dictionary;

	if (this.platform == "chrome") {
	if (!affData) affData = this._readFile(chrome.extension.getURL("lib/typo/dictionaries/" + dictionary + "/" + dictionary + ".aff"));
	if (!wordsData) wordsData = this._readFile(chrome.extension.getURL("lib/typo/dictionaries/" + dictionary + "/" + dictionary + ".dic"));
	} else {
	var path = settings.dictionaryPath \|\| '';

	if (!affData) affData = this._readFile(path + "/" + dictionary + "/" + dictionary + ".aff");
	if (!wordsData) wordsData = this._readFile(path + "/" + dictionary + "/" + dictionary + ".dic");
	}

	this.rules = this._parseAFF(affData);

	// Save the rule codes that are used in compound rules.
	this.compoundRuleCodes = {};

	for (var i = 0, _len = this.compoundRules.length; i < _len; i++) {
	var rule = this.compoundRules[i];

	for (var j = 0, _jlen = rule.length; j < _jlen; j++) {
	this.compoundRuleCodes[rule[j]] = [];
	}
	}

	// If we add this ONLYINCOMPOUND flag to this.compoundRuleCodes, then _parseDIC
	// will do the work of saving the list of words that are compound-only.
	if ("ONLYINCOMPOUND" in this.flags) {
	this.compoundRuleCodes[this.flags.ONLYINCOMPOUND] = [];
	}

	this.dictionaryTable = this._parseDIC(wordsData);

	// Get rid of any codes from the compound rule codes that are never used
	// (or that were special regex characters). Not especially necessary...
	for (var i in this.compoundRuleCodes) {
	if (this.compoundRuleCodes[i].length == 0) {
	delete this.compoundRuleCodes[i];
	}
	}

	// Build the full regular expressions for each compound rule.
	// I have a feeling (but no confirmation yet) that this method of
	// testing for compound words is probably slow.
	for (var i = 0, _len = this.compoundRules.length; i < _len; i++) {
	var ruleText = this.compoundRules[i];

	var expressionText = "";

	for (var j = 0, _jlen = ruleText.length; j < _jlen; j++) {
	var character = ruleText[j];

	if (character in this.compoundRuleCodes) {
	expressionText += "(" + this.compoundRuleCodes[character].join("\|") + ")";
	}
	else {
	expressionText += character;
	}
	}

	this.compoundRules[i] = new RegExp(expressionText, "i");
	}
	}

	return this;
	};

	Typo.prototype = {
	/**
	* Loads a Typo instance from a hash of all of the Typo properties.
	*
	* @param object obj A hash of Typo properties, probably gotten from a JSON.parse(JSON.stringify(typo_instance)).
	*/

	load : function (obj) {
	for (var i in obj) {
	this[i] = obj[i];
	}

	return this;
	},

	/**
	* Read the contents of a file.
	*
	* @param {String} path The path (relative) to the file.
	* @param {String} [charset="ISO8859-1"] The expected charset of the file
	* @returns string The file data.
	*/

	_readFile : function (path, charset) {
	if (!charset) charset = "ISO8859-1";

	var req = new XMLHttpRequest();
	req.open("GET", path, false);

	if (req.overrideMimeType)
	req.overrideMimeType("text/plain; charset=" + charset);

	req.send(null);

	return req.responseText;
	},

	/**
	* Parse the rules out from a .aff file.
	*
	* @param {String} data The contents of the affix file.
	* @returns object The rules from the file.
	*/

	_parseAFF : function (data) {
	var rules = {};

	// Remove comment lines
	data = this._removeAffixComments(data);

	var lines = data.split("\n");

	for (var i = 0, _len = lines.length; i < _len; i++) {
	var line = lines[i];

	var definitionParts = line.split(/\s+/);

	var ruleType = definitionParts[0];

	if (ruleType == "PFX" \|\| ruleType == "SFX") {
	var ruleCode = definitionParts[1];
	var combineable = definitionParts[2];
	var numEntries = parseInt(definitionParts[3], 10);

	var entries = [];

	for (var j = i + 1, _jlen = i + 1 + numEntries; j < _jlen; j++) {
	var line = lines[j];

	var lineParts = line.split(/\s+/);
	var charactersToRemove = lineParts[2];

	var additionParts = lineParts[3].split("/");

	var charactersToAdd = additionParts[0];
	if (charactersToAdd === "0") charactersToAdd = "";

	var continuationClasses = this.parseRuleCodes(additionParts[1]);

	var regexToMatch = lineParts[4];

	var entry = {};
	entry.add = charactersToAdd;

	if (continuationClasses.length > 0) entry.continuationClasses = continuationClasses;

	if (regexToMatch !== ".") {
	if (ruleType === "SFX") {
	entry.match = new RegExp(regexToMatch + "$");
	}
	else {
	entry.match = new RegExp("^" + regexToMatch);
	}
	}

	if (charactersToRemove != "0") {
	if (ruleType === "SFX") {
	entry.remove = new RegExp(charactersToRemove + "$");
	}
	else {
	entry.remove = charactersToRemove;
	}
	}

	entries.push(entry);
	}

	rules[ruleCode] = { "type" : ruleType, "combineable" : (combineable == "Y"), "entries" : entries };

	i += numEntries;
	}
	else if (ruleType === "COMPOUNDRULE") {
	var numEntries = parseInt(definitionParts[1], 10);

	for (var j = i + 1, _jlen = i + 1 + numEntries; j < _jlen; j++) {
	var line = lines[j];

	var lineParts = line.split(/\s+/);
	this.compoundRules.push(lineParts[1]);
	}

	i += numEntries;
	}
	else if (ruleType === "REP") {
	var lineParts = line.split(/\s+/);

	if (lineParts.length === 3) {
	this.replacementTable.push([ lineParts[1], lineParts[2] ]);
	}
	}
	else {
	// ONLYINCOMPOUND
	// COMPOUNDMIN
	// FLAG
	// KEEPCASE
	// NEEDAFFIX

	this.flags[ruleType] = definitionParts[1];
	}
	}

	return rules;
	},

	/**
	* Removes comment lines and then cleans up blank lines and trailing whitespace.
	*
	* @param {String} data The data from an affix file.
	* @return {String} The cleaned-up data.
	*/

	_removeAffixComments : function (data) {
	// Remove comments
	data = data.replace(/#.*$/mg, "");

	// Trim each line
	data = data.replace(/^\s\s/m, '').replace(/\s\s$/m, '');

	// Remove blank lines.
	data = data.replace(/\n{2,}/g, "\n");

	// Trim the entire string
	data = data.replace(/^\s\s/, '').replace(/\s\s$/, '');

	return data;
	},

	/**
	* Parses the words out from the .dic file.
	*
	* @param {String} data The data from the dictionary file.
	* @returns object The lookup table containing all of the words and
	* word forms from the dictionary.
	*/

	_parseDIC : function (data) {
	data = this._removeDicComments(data);

	var lines = data.split("\n");
	var dictionaryTable = {};

	function addWord(word, rules) {
	// Some dictionaries will list the same word multiple times with different rule sets.
	if (!(word in dictionaryTable) \|\| typeof dictionaryTable[word] != 'object') {
	dictionaryTable[word] = [];
	}

	dictionaryTable[word].push(rules);
	}

	// The first line is the number of words in the dictionary.
	for (var i = 1, _len = lines.length; i < _len; i++) {
	var line = lines[i];

	var parts = line.split("/", 2);

	var word = parts[0];

	// Now for each affix rule, generate that form of the word.
	if (parts.length > 1) {
	var ruleCodesArray = this.parseRuleCodes(parts[1]);

	// Save the ruleCodes for compound word situations.
	if (!("NEEDAFFIX" in this.flags) \|\| ruleCodesArray.indexOf(this.flags.NEEDAFFIX) == -1) {
	addWord(word, ruleCodesArray);
	}

	for (var j = 0, _jlen = ruleCodesArray.length; j < _jlen; j++) {
	var code = ruleCodesArray[j];

	var rule = this.rules[code];

	if (rule) {
	var newWords = this._applyRule(word, rule);

	for (var ii = 0, _iilen = newWords.length; ii < _iilen; ii++) {
	var newWord = newWords[ii];

	addWord(newWord, []);

	if (rule.combineable) {
	for (var k = j + 1; k < _jlen; k++) {
	var combineCode = ruleCodesArray[k];

	var combineRule = this.rules[combineCode];

	if (combineRule) {
	if (combineRule.combineable && (rule.type != combineRule.type)) {
	var otherNewWords = this._applyRule(newWord, combineRule);

	for (var iii = 0, _iiilen = otherNewWords.length; iii < _iiilen; iii++) {
	var otherNewWord = otherNewWords[iii];
	addWord(otherNewWord, []);
	}
	}
	}
	}
	}
	}
	}

	if (code in this.compoundRuleCodes) {
	this.compoundRuleCodes[code].push(word);
	}
	}
	}
	else {
	addWord(word.trim(), []);
	}
	}

	return dictionaryTable;
	},


	/**
	* Removes comment lines and then cleans up blank lines and trailing whitespace.
	*
	* @param {String} data The data from a .dic file.
	* @return {String} The cleaned-up data.
	*/

	_removeDicComments : function (data) {
	// I can't find any official documentation on it, but at least the de_DE
	// dictionary uses tab-indented lines as comments.

	// Remove comments
	data = data.replace(/^\t.*$/mg, "");

	return data;

	// Trim each line
	data = data.replace(/^\s\s/m, '').replace(/\s\s$/m, '');

	// Remove blank lines.
	data = data.replace(/\n{2,}/g, "\n");

	// Trim the entire string
	data = data.replace(/^\s\s/, '').replace(/\s\s$/, '');

	return data;
	},

	parseRuleCodes : function (textCodes) {
	if (!textCodes) {
	return [];
	}
	else if (!("FLAG" in this.flags)) {
	return textCodes.split("");
	}
	else if (this.flags.FLAG === "long") {
	var flags = [];

	for (var i = 0, _len = textCodes.length; i < _len; i += 2) {
	flags.push(textCodes.substr(i, 2));
	}

	return flags;
	}
	else if (this.flags.FLAG === "num") {
	return textCode.split(",");
	}
	},

	/**
	* Applies an affix rule to a word.
	*
	* @param {String} word The base word.
	* @param {Object} rule The affix rule.
	* @returns {String[]} The new words generated by the rule.
	*/

	_applyRule : function (word, rule) {
	var entries = rule.entries;
	var newWords = [];

	for (var i = 0, _len = entries.length; i < _len; i++) {
	var entry = entries[i];

	if (!entry.match \|\| word.match(entry.match)) {
	var newWord = word;

	if (entry.remove) {
	newWord = newWord.replace(entry.remove, "");
	}

	if (rule.type === "SFX") {
	newWord = newWord + entry.add;
	}
	else {
	newWord = entry.add + newWord;
	}

	newWords.push(newWord);

	if ("continuationClasses" in entry) {
	for (var j = 0, _jlen = entry.continuationClasses.length; j < _jlen; j++) {
	var continuationRule = this.rules[entry.continuationClasses[j]];

	if (continuationRule) {
	newWords = newWords.concat(this._applyRule(newWord, continuationRule));
	}
	/*
	else {
	// This shouldn't happen, but it does, at least in the de_DE dictionary.
	// I think the author mistakenly supplied lower-case rule codes instead
	// of upper-case.
	}
	*/
	}
	}
	}
	}

	return newWords;
	},

	/**
	* Checks whether a word or a capitalization variant exists in the current dictionary.
	* The word is trimmed and several variations of capitalizations are checked.
	* If you want to check a word without any changes made to it, call checkExact()
	*
	* @see http://blog.stevenlevithan.com/archives/faster-trim-javascript re:trimming function
	*
	* @param {String} aWord The word to check.
	* @returns {Boolean}
	*/

	check : function (aWord) {
	// Remove leading and trailing whitespace
	var trimmedWord = aWord.replace(/^\s\s/, '').replace(/\s\s$/, '');

	if (this.checkExact(trimmedWord)) {
	return true;
	}

	// The exact word is not in the dictionary.
	if (trimmedWord.toUpperCase() === trimmedWord) {
	// The word was supplied in all uppercase.
	// Check for a capitalized form of the word.
	var capitalizedWord = trimmedWord[0] + trimmedWord.substring(1).toLowerCase();

	if (this.hasFlag(capitalizedWord, "KEEPCASE")) {
	// Capitalization variants are not allowed for this word.
	return false;
	}

	if (this.checkExact(capitalizedWord)) {
	return true;
	}
	}

	var lowercaseWord = trimmedWord.toLowerCase();

	if (lowercaseWord !== trimmedWord) {
	if (this.hasFlag(lowercaseWord, "KEEPCASE")) {
	// Capitalization variants are not allowed for this word.
	return false;
	}

	// Check for a lowercase form
	if (this.checkExact(lowercaseWord)) {
	return true;
	}
	}

	return false;
	},

	/**
	* Checks whether a word exists in the current dictionary.
	*
	* @param {String} word The word to check.
	* @returns {Boolean}
	*/

	checkExact : function (word) {
	var ruleCodes = this.dictionaryTable[word];

	if (typeof ruleCodes === 'undefined') {
	// Check if this might be a compound word.
	if ("COMPOUNDMIN" in this.flags && word.length >= this.flags.COMPOUNDMIN) {
	for (var i = 0, _len = this.compoundRules.length; i < _len; i++) {
	if (word.match(this.compoundRules[i])) {
	return true;
	}
	}
	}

	return false;
	}
	else {
	for (var i = 0, _len = ruleCodes.length; i < _len; i++) {
	if (!this.hasFlag(word, "ONLYINCOMPOUND", ruleCodes[i])) {
	return true;
	}
	}

	return false;
	}
	},

	/**
	* Looks up whether a given word is flagged with a given flag.
	*
	* @param {String} word The word in question.
	* @param {String} flag The flag in question.
	* @return {Boolean}
	*/

	hasFlag : function (word, flag, wordFlags) {
	if (flag in this.flags) {
	if (typeof wordFlags === 'undefined') {
	var wordFlags = Array.prototype.concat.apply([], this.dictionaryTable[word]);
	}

	if (wordFlags && wordFlags.indexOf(this.flags[flag]) !== -1) {
	return true;
	}
	}

	return false;
	},

	/**
	* Returns a list of suggestions for a misspelled word.
	*
	* @see http://www.norvig.com/spell-correct.html for the basis of this suggestor.
	* This suggestor is primitive, but it works.
	*
	* @param {String} word The misspelling.
	* @param {Number} [limit=5] The maximum number of suggestions to return.
	* @returns {String[]} The array of suggestions.
	*/

	alphabet : "",

	suggest : function (word, limit) {
	if (!limit) limit = 5;

	if (this.check(word)) return [];

	// Check the replacement table.
	for (var i = 0, _len = this.replacementTable.length; i < _len; i++) {
	var replacementEntry = this.replacementTable[i];

	if (word.indexOf(replacementEntry[0]) !== -1) {
	var correctedWord = word.replace(replacementEntry[0], replacementEntry[1]);

	if (this.check(correctedWord)) {
	return [ correctedWord ];
	}
	}
	}

	var self = this;
	self.alphabet = "abcdefghijklmnopqrstuvwxyz";

	/*
	if (!self.alphabet) {
	// Use the alphabet as implicitly defined by the words in the dictionary.
	var alphaHash = {};

	for (var i in self.dictionaryTable) {
	for (var j = 0, _len = i.length; j < _len; j++) {
	alphaHash[i[j]] = true;
	}
	}

	for (var i in alphaHash) {
	self.alphabet += i;
	}

	var alphaArray = self.alphabet.split("");
	alphaArray.sort();
	self.alphabet = alphaArray.join("");
	}
	*/

	function edits1(words) {
	var rv = [];

	for (var ii = 0, _iilen = words.length; ii < _iilen; ii++) {
	var word = words[ii];

	var splits = [];

	for (var i = 0, _len = word.length + 1; i < _len; i++) {
	splits.push([ word.substring(0, i), word.substring(i, word.length) ]);
	}

	var deletes = [];

	for (var i = 0, _len = splits.length; i < _len; i++) {
	var s = splits[i];

	if (s[1]) {
	deletes.push(s[0] + s[1].substring(1));
	}
	}

	var transposes = [];

	for (var i = 0, _len = splits.length; i < _len; i++) {
	var s = splits[i];

	if (s[1].length > 1) {
	transposes.push(s[0] + s[1][1] + s[1][0] + s[1].substring(2));
	}
	}

	var replaces = [];

	for (var i = 0, _len = splits.length; i < _len; i++) {
	var s = splits[i];

	if (s[1]) {
	for (var j = 0, _jlen = self.alphabet.length; j < _jlen; j++) {
	replaces.push(s[0] + self.alphabet[j] + s[1].substring(1));
	}
	}
	}

	var inserts = [];

	for (var i = 0, _len = splits.length; i < _len; i++) {
	var s = splits[i];

	if (s[1]) {
	for (var j = 0, _jlen = self.alphabet.length; j < _jlen; j++) {
	replaces.push(s[0] + self.alphabet[j] + s[1]);
	}
	}
	}

	rv = rv.concat(deletes);
	rv = rv.concat(transposes);
	rv = rv.concat(replaces);
	rv = rv.concat(inserts);
	}

	return rv;
	}

	function known(words) {
	var rv = [];

	for (var i = 0; i < words.length; i++) {
	if (self.check(words[i])) {
	rv.push(words[i]);
	}
	}

	return rv;
	}

	function correct(word) {
	// Get the edit-distance-1 and edit-distance-2 forms of this word.
	var ed1 = edits1([word]);
	var ed2 = edits1(ed1);

	var corrections = known(ed1).concat(known(ed2));

	// Sort the edits based on how many different ways they were created.
	var weighted_corrections = {};

	for (var i = 0, _len = corrections.length; i < _len; i++) {
	if (!(corrections[i] in weighted_corrections)) {
	weighted_corrections[corrections[i]] = 1;
	}
	else {
	weighted_corrections[corrections[i]] += 1;
	}
	}

	var sorted_corrections = [];

	for (var i in weighted_corrections) {
	sorted_corrections.push([ i, weighted_corrections[i] ]);
	}

	function sorter(a, b) {
	if (a[1] < b[1]) {
	return -1;
	}

	return 1;
	}

	sorted_corrections.sort(sorter).reverse();

	var rv = [];

	for (var i = 0, _len = Math.min(limit, sorted_corrections.length); i < _len; i++) {
	if (!self.hasFlag(sorted_corrections[i][0], "NOSUGGEST")) {
	rv.push(sorted_corrections[i][0]);
	}
	}

	return rv;
	}

	return correct(word);
	}
	};
	; browserify_shim__define__module__export__(typeof Typo != "undefined" ? Typo : window.Typo);

	}).call(global, undefined, undefined, undefined, undefined, function defineExport(ex) { module.exports = ex; });

	}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

	},{}],3:[function(require,module,exports){
	// CodeMirror, copyright (c) by Marijn Haverbeke and others
	// Distributed under an MIT license: http://codemirror.net/LICENSE

	(function(mod) {
	if (typeof exports == "object" && typeof module == "object") // CommonJS
	mod(require("../../lib/codemirror"));
	else if (typeof define == "function" && define.amd) // AMD
	define(["../../lib/codemirror"], mod);
	else // Plain browser env
	mod(CodeMirror);
	})(function(CodeMirror) {
	"use strict";

	CodeMirror.defineOption("fullScreen", false, function(cm, val, old) {
	if (old == CodeMirror.Init) old = false;
	if (!old == !val) return;
	if (val) setFullscreen(cm);
	else setNormal(cm);
	});

	function setFullscreen(cm) {
	var wrap = cm.getWrapperElement();
	cm.state.fullScreenRestore = {scrollTop: window.pageYOffset, scrollLeft: window.pageXOffset,
	width: wrap.style.width, height: wrap.style.height};
	wrap.style.width = "";
	wrap.style.height = "auto";
	wrap.className += " CodeMirror-fullscreen";
	document.documentElement.style.overflow = "hidden";
	cm.refresh();
	}

	function setNormal(cm) {
	var wrap = cm.getWrapperElement();
	wrap.className = wrap.className.replace(/\s*CodeMirror-fullscreen\b/, "");
	document.documentElement.style.overflow = "";
	var info = cm.state.fullScreenRestore;
	wrap.style.width = info.width; wrap.style.height = info.height;
	window.scrollTo(info.scrollLeft, info.scrollTop);
	cm.refresh();
	}
	});

	},{"../../lib/codemirror":6}],4:[function(require,module,exports){
	// CodeMirror, copyright (c) by Marijn Haverbeke and others
	// Distributed under an MIT license: http://codemirror.net/LICENSE

	(function(mod) {
	if (typeof exports == "object" && typeof module == "object") // CommonJS
	mod(require("../../lib/codemirror"));
	else if (typeof define == "function" && define.amd) // AMD
	define(["../../lib/codemirror"], mod);
	else // Plain browser env
	mod(CodeMirror);
	})(function(CodeMirror) {
	"use strict";

	var listRE = /^(\s)(>[> ]\|[+-]\s\|(\d+)([.)]))(\s)/,
	emptyListRE = /^(\s)(>[> ]\|[+-]\|(\d+)[.)])(\s)$/,
	unorderedListRE = /[*+-]\s/;

	CodeMirror.commands.newlineAndIndentContinueMarkdownList = function(cm) {
	if (cm.getOption("disableInput")) return CodeMirror.Pass;
	var ranges = cm.listSelections(), replacements = [];
	for (var i = 0; i < ranges.length; i++) {
	var pos = ranges[i].head;
	var eolState = cm.getStateAfter(pos.line);
	var inList = eolState.list !== false;
	var inQuote = eolState.quote !== 0;

	var line = cm.getLine(pos.line), match = listRE.exec(line);
	if (!ranges[i].empty() \|\| (!inList && !inQuote) \|\| !match) {
	cm.execCommand("newlineAndIndent");
	return;
	}
	if (emptyListRE.test(line)) {
	cm.replaceRange("", {
	line: pos.line, ch: 0
	}, {
	line: pos.line, ch: pos.ch + 1
	});
	replacements[i] = "\n";
	} else {
	var indent = match[1], after = match[5];
	var bullet = unorderedListRE.test(match[2]) \|\| match[2].indexOf(">") >= 0
	? match[2]
	: (parseInt(match[3], 10) + 1) + match[4];

	replacements[i] = "\n" + indent + bullet + after;
	}
	}

	cm.replaceSelections(replacements);
	};
	});

	},{"../../lib/codemirror":6}],5:[function(require,module,exports){
	// CodeMirror, copyright (c) by Marijn Haverbeke and others
	// Distributed under an MIT license: http://codemirror.net/LICENSE

	// Utility function that allows modes to be combined. The mode given
	// as the base argument takes care of most of the normal mode
	// functionality, but a second (typically simple) mode is used, which
	// can override the style of text. Both modes get to parse all of the
	// text, but when both assign a non-null style to a piece of code, the
	// overlay wins, unless the combine argument was true and not overridden,
	// or state.overlay.combineTokens was true, in which case the styles are
	// combined.

	(function(mod) {
	if (typeof exports == "object" && typeof module == "object") // CommonJS
	mod(require("../../lib/codemirror"));
	else if (typeof define == "function" && define.amd) // AMD
	define(["../../lib/codemirror"], mod);
	else // Plain browser env
	mod(CodeMirror);
	})(function(CodeMirror) {
	"use strict";

	CodeMirror.overlayMode = function(base, overlay, combine) {
	return {
	startState: function() {
	return {
	base: CodeMirror.startState(base),
	overlay: CodeMirror.startState(overlay),
	basePos: 0, baseCur: null,
	overlayPos: 0, overlayCur: null,
	streamSeen: null
	};
	},
	copyState: function(state) {
	return {
	base: CodeMirror.copyState(base, state.base),
	overlay: CodeMirror.copyState(overlay, state.overlay),
	basePos: state.basePos, baseCur: null,
	overlayPos: state.overlayPos, overlayCur: null
	};
	},

	token: function(stream, state) {
	if (stream != state.streamSeen \|\|
	Math.min(state.basePos, state.overlayPos) < stream.start) {
	state.streamSeen = stream;
	state.basePos = state.overlayPos = stream.start;
	}

	if (stream.start == state.basePos) {
	state.baseCur = base.token(stream, state.base);
	state.basePos = stream.pos;
	}
	if (stream.start == state.overlayPos) {
	stream.pos = stream.start;
	state.overlayCur = overlay.token(stream, state.overlay);
	state.overlayPos = stream.pos;
	}
	stream.pos = Math.min(state.basePos, state.overlayPos);

	// state.overlay.combineTokens always takes precedence over combine,
	// unless set to null
	if (state.overlayCur == null) return state.baseCur;
	else if (state.baseCur != null &&
	state.overlay.combineTokens \|\|
	combine && state.overlay.combineTokens == null)
	return state.baseCur + " " + state.overlayCur;
	else return state.overlayCur;
	},

	indent: base.indent && function(state, textAfter) {
	return base.indent(state.base, textAfter);
	},
	electricChars: base.electricChars,

	innerMode: function(state) { return {state: state.base, mode: base}; },

	blankLine: function(state) {
	if (base.blankLine) base.blankLine(state.base);
	if (overlay.blankLine) overlay.blankLine(state.overlay);
	}
	};
	};

	});

	},{"../../lib/codemirror":6}],6:[function(require,module,exports){
	// CodeMirror, copyright (c) by Marijn Haverbeke and others
	// Distributed under an MIT license: http://codemirror.net/LICENSE

	// This is CodeMirror (http://codemirror.net), a code editor
	// implemented in JavaScript on top of the browser's DOM.
	//
	// You can find some technical background for some of the code below
	// at http://marijnhaverbeke.nl/blog/#cm-internals .

	(function(mod) {
	if (typeof exports == "object" && typeof module == "object") // CommonJS
	module.exports = mod();
	else if (typeof define == "function" && define.amd) // AMD
	return define([], mod);
	else // Plain browser env
	this.CodeMirror = mod();
	})(function() {
	"use strict";

	// BROWSER SNIFFING

	// Kludges for bugs and behavior differences that can't be feature
	// detected are enabled based on userAgent etc sniffing.
	var userAgent = navigator.userAgent;
	var platform = navigator.platform;

	var gecko = /gecko\/\d/i.test(userAgent);
	var ie_upto10 = /MSIE \d/.test(userAgent);
	var ie_11up = /Trident\/(?:[7-9]\|\d{2,})\..*rv:(\d+)/.exec(userAgent);
	var ie = ie_upto10 \|\| ie_11up;
	var ie_version = ie && (ie_upto10 ? document.documentMode \|\| 6 : ie_11up[1]);
	var webkit = /WebKit\//.test(userAgent);
	var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent);
	var chrome = /Chrome\//.test(userAgent);
	var presto = /Opera\//.test(userAgent);
	var safari = /Apple Computer/.test(navigator.vendor);
	var mac_geMountainLion = /Mac OS X 1\d\D([8-9]\|\d\d)\D/.test(userAgent);
	var phantom = /PhantomJS/.test(userAgent);

	var ios = /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent);
	// This is woefully incomplete. Suggestions for alternative methods welcome.
	var mobile = ios \|\| /Android\|webOS\|BlackBerry\|Opera Mini\|Opera Mobi\|IEMobile/i.test(userAgent);
	var mac = ios \|\| /Mac/.test(platform);
	var windows = /win/i.test(platform);

	var presto_version = presto && userAgent.match(/Version\/(\d\.\d)/);
	if (presto_version) presto_version = Number(presto_version[1]);
	if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
	// Some browsers use the wrong event properties to signal cmd/ctrl on OS X
	var flipCtrlCmd = mac && (qtwebkit \|\| presto && (presto_version == null \|\| presto_version < 12.11));
	var captureRightClick = gecko \|\| (ie && ie_version >= 9);

	// Optimize some code when these features are not used.
	var sawReadOnlySpans = false, sawCollapsedSpans = false;

	// EDITOR CONSTRUCTOR

	// A CodeMirror instance represents an editor. This is the object
	// that user code is usually dealing with.

	function CodeMirror(place, options) {
	if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);

	this.options = options = options ? copyObj(options) : {};
	// Determine effective options based on given values and defaults.
	copyObj(defaults, options, false);
	setGuttersForLineNumbers(options);

	var doc = options.value;
	if (typeof doc == "string") doc = new Doc(doc, options.mode, null, options.lineSeparator);
	this.doc = doc;

	var input = new CodeMirror.inputStyles[options.inputStyle](this);
	var display = this.display = new Display(place, doc, input);
	display.wrapper.CodeMirror = this;
	updateGutters(this);
	themeChanged(this);
	if (options.lineWrapping)
	this.display.wrapper.className += " CodeMirror-wrap";
	if (options.autofocus && !mobile) display.input.focus();
	initScrollbars(this);

	this.state = {
	keyMaps: [], // stores maps added by addKeyMap
	overlays: [], // highlighting overlays, as added by addOverlay
	modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info
	overwrite: false,
	delayingBlurEvent: false,
	focused: false,
	suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
	pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll
	selectingText: false,
	draggingText: false,
	highlight: new Delayed(), // stores highlight worker timeout
	keySeq: null, // Unfinished key sequence
	specialChars: null
	};

	var cm = this;

	// Override magic textarea content restore that IE sometimes does
	// on our hidden textarea on reload
	if (ie && ie_version < 11) setTimeout(function() { cm.display.input.reset(true); }, 20);

	registerEventHandlers(this);
	ensureGlobalHandlers();

	startOperation(this);
	this.curOp.forceUpdate = true;
	attachDoc(this, doc);

	if ((options.autofocus && !mobile) \|\| cm.hasFocus())
	setTimeout(bind(onFocus, this), 20);
	else
	onBlur(this);

	for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))
	optionHandlers[opt](this, options[opt], Init);
	maybeUpdateLineNumberWidth(this);
	if (options.finishInit) options.finishInit(this);
	for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
	endOperation(this);
	// Suppress optimizelegibility in Webkit, since it breaks text
	// measuring on line wrapping boundaries.
	if (webkit && options.lineWrapping &&
	getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
	display.lineDiv.style.textRendering = "auto";
	}

	// DISPLAY CONSTRUCTOR

	// The display handles the DOM integration, both for input reading
	// and content drawing. It holds references to DOM nodes and
	// display-related state.

	function Display(place, doc, input) {
	var d = this;
	this.input = input;

	// Covers bottom-right square when both scrollbars are present.
	d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
	d.scrollbarFiller.setAttribute("cm-not-content", "true");
	// Covers bottom of gutter when coverGutterNextToScrollbar is on
	// and h scrollbar is present.
	d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
	d.gutterFiller.setAttribute("cm-not-content", "true");
	// Will contain the actual code, positioned to cover the viewport.
	d.lineDiv = elt("div", null, "CodeMirror-code");
	// Elements are added to these to represent selection and cursors.
	d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
	d.cursorDiv = elt("div", null, "CodeMirror-cursors");
	// A visibility: hidden element used to find the size of things.
	d.measure = elt("div", null, "CodeMirror-measure");
	// When lines outside of the viewport are measured, they are drawn in this.
	d.lineMeasure = elt("div", null, "CodeMirror-measure");
	// Wraps everything that needs to exist inside the vertically-padded coordinate system
	d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
	null, "position: relative; outline: none");
	// Moved around its parent to cover visible view.
	d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
	// Set to the height of the document, allowing scrolling.
	d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
	d.sizerWidth = null;
	// Behavior of elts with overflow: auto and padding is
	// inconsistent across browsers. This is used to ensure the
	// scrollable area is big enough.
	d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;");
	// Will contain the gutters, if any.
	d.gutters = elt("div", null, "CodeMirror-gutters");
	d.lineGutter = null;
	// Actual scrollable element.
	d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
	d.scroller.setAttribute("tabIndex", "-1");
	// The element in which the editor lives.
	d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");

	// Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
	if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
	if (!webkit && !(gecko && mobile)) d.scroller.draggable = true;

	if (place) {
	if (place.appendChild) place.appendChild(d.wrapper);
	else place(d.wrapper);
	}

	// Current rendered range (may be bigger than the view window).
	d.viewFrom = d.viewTo = doc.first;
	d.reportedViewFrom = d.reportedViewTo = doc.first;
	// Information about the rendered lines.
	d.view = [];
	d.renderedView = null;
	// Holds info about a single rendered line when it was rendered
	// for measurement, while not in view.
	d.externalMeasured = null;
	// Empty space (in pixels) above the view
	d.viewOffset = 0;
	d.lastWrapHeight = d.lastWrapWidth = 0;
	d.updateLineNumbers = null;

	d.nativeBarWidth = d.barHeight = d.barWidth = 0;
	d.scrollbarsClipped = false;

	// Used to only resize the line number gutter when necessary (when
	// the amount of lines crosses a boundary that makes its width change)
	d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
	// Set to true when a non-horizontal-scrolling line widget is
	// added. As an optimization, line widget aligning is skipped when
	// this is false.
	d.alignWidgets = false;

	d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;

	// Tracks the maximum line length so that the horizontal scrollbar
	// can be kept static when scrolling.
	d.maxLine = null;
	d.maxLineLength = 0;
	d.maxLineChanged = false;

	// Used for measuring wheel scrolling granularity
	d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;

	// True when shift is held down.
	d.shift = false;

	// Used to track whether anything happened since the context menu
	// was opened.
	d.selForContextMenu = null;

	d.activeTouch = null;

	input.init(d);
	}

	// STATE UPDATES

	// Used to get the editor into a consistent state again when options change.

	function loadMode(cm) {
	cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
	resetModeState(cm);
	}

	function resetModeState(cm) {
	cm.doc.iter(function(line) {
	if (line.stateAfter) line.stateAfter = null;
	if (line.styles) line.styles = null;
	});
	cm.doc.frontier = cm.doc.first;
	startWorker(cm, 100);
	cm.state.modeGen++;
	if (cm.curOp) regChange(cm);
	}

	function wrappingChanged(cm) {
	if (cm.options.lineWrapping) {
	addClass(cm.display.wrapper, "CodeMirror-wrap");
	cm.display.sizer.style.minWidth = "";
	cm.display.sizerWidth = null;
	} else {
	rmClass(cm.display.wrapper, "CodeMirror-wrap");
	findMaxLine(cm);
	}
	estimateLineHeights(cm);
	regChange(cm);
	clearCaches(cm);
	setTimeout(function(){updateScrollbars(cm);}, 100);
	}

	// Returns a function that estimates the height of a line, to use as
	// first approximation until the line becomes visible (and is thus
	// properly measurable).
	function estimateHeight(cm) {
	var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
	var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
	return function(line) {
	if (lineIsHidden(cm.doc, line)) return 0;

	var widgetsHeight = 0;
	if (line.widgets) for (var i = 0; i < line.widgets.length; i++) {
	if (line.widgets[i].height) widgetsHeight += line.widgets[i].height;
	}

	if (wrapping)
	return widgetsHeight + (Math.ceil(line.text.length / perLine) \|\| 1) * th;
	else
	return widgetsHeight + th;
	};
	}

	function estimateLineHeights(cm) {
	var doc = cm.doc, est = estimateHeight(cm);
	doc.iter(function(line) {
	var estHeight = est(line);
	if (estHeight != line.height) updateLineHeight(line, estHeight);
	});
	}

	function themeChanged(cm) {
	cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
	cm.options.theme.replace(/(^\|\s)\s*/g, " cm-s-");
	clearCaches(cm);
	}

	function guttersChanged(cm) {
	updateGutters(cm);
	regChange(cm);
	setTimeout(function(){alignHorizontally(cm);}, 20);
	}

	// Rebuild the gutter elements, ensure the margin to the left of the
	// code matches their width.
	function updateGutters(cm) {
	var gutters = cm.display.gutters, specs = cm.options.gutters;
	removeChildren(gutters);
	for (var i = 0; i < specs.length; ++i) {
	var gutterClass = specs[i];
	var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
	if (gutterClass == "CodeMirror-linenumbers") {
	cm.display.lineGutter = gElt;
	gElt.style.width = (cm.display.lineNumWidth \|\| 1) + "px";
	}
	}
	gutters.style.display = i ? "" : "none";
	updateGutterSpace(cm);
	}

	function updateGutterSpace(cm) {
	var width = cm.display.gutters.offsetWidth;
	cm.display.sizer.style.marginLeft = width + "px";
	}

	// Compute the character length of a line, taking into account
	// collapsed ranges (see markText) that might hide parts, and join
	// other lines onto it.
	function lineLength(line) {
	if (line.height == 0) return 0;
	var len = line.text.length, merged, cur = line;
	while (merged = collapsedSpanAtStart(cur)) {
	var found = merged.find(0, true);
	cur = found.from.line;
	len += found.from.ch - found.to.ch;
	}
	cur = line;
	while (merged = collapsedSpanAtEnd(cur)) {
	var found = merged.find(0, true);
	len -= cur.text.length - found.from.ch;
	cur = found.to.line;
	len += cur.text.length - found.to.ch;
	}
	return len;
	}

	// Find the longest line in the document.
	function findMaxLine(cm) {
	var d = cm.display, doc = cm.doc;
	d.maxLine = getLine(doc, doc.first);
	d.maxLineLength = lineLength(d.maxLine);
	d.maxLineChanged = true;
	doc.iter(function(line) {
	var len = lineLength(line);
	if (len > d.maxLineLength) {
	d.maxLineLength = len;
	d.maxLine = line;
	}
	});
	}

	// Make sure the gutters options contains the element
	// "CodeMirror-linenumbers" when the lineNumbers option is true.
	function setGuttersForLineNumbers(options) {
	var found = indexOf(options.gutters, "CodeMirror-linenumbers");
	if (found == -1 && options.lineNumbers) {
	options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
	} else if (found > -1 && !options.lineNumbers) {
	options.gutters = options.gutters.slice(0);
	options.gutters.splice(found, 1);
	}
	}

	// SCROLLBARS

	// Prepare DOM reads needed to update the scrollbars. Done in one
	// shot to minimize update/measure roundtrips.
	function measureForScrollbars(cm) {
	var d = cm.display, gutterW = d.gutters.offsetWidth;
	var docH = Math.round(cm.doc.height + paddingVert(cm.display));
	return {
	clientHeight: d.scroller.clientHeight,
	viewHeight: d.wrapper.clientHeight,
	scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
	viewWidth: d.wrapper.clientWidth,
	barLeft: cm.options.fixedGutter ? gutterW : 0,
	docHeight: docH,
	scrollHeight: docH + scrollGap(cm) + d.barHeight,
	nativeBarWidth: d.nativeBarWidth,
	gutterWidth: gutterW
	};
	}

	function NativeScrollbars(place, scroll, cm) {
	this.cm = cm;
	var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
	var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
	place(vert); place(horiz);

	on(vert, "scroll", function() {
	if (vert.clientHeight) scroll(vert.scrollTop, "vertical");
	});
	on(horiz, "scroll", function() {
	if (horiz.clientWidth) scroll(horiz.scrollLeft, "horizontal");
	});

	this.checkedZeroWidth = false;
	// Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
	if (ie && ie_version < 8) this.horiz.style.minHeight = this.vert.style.minWidth = "18px";
	}

	NativeScrollbars.prototype = copyObj({
	update: function(measure) {
	var needsH = measure.scrollWidth > measure.clientWidth + 1;
	var needsV = measure.scrollHeight > measure.clientHeight + 1;
	var sWidth = measure.nativeBarWidth;

	if (needsV) {
	this.vert.style.display = "block";
	this.vert.style.bottom = needsH ? sWidth + "px" : "0";
	var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);
	// A bug in IE8 can cause this value to be negative, so guard it.
	this.vert.firstChild.style.height =
	Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px";
	} else {
	this.vert.style.display = "";
	this.vert.firstChild.style.height = "0";
	}

	if (needsH) {
	this.horiz.style.display = "block";
	this.horiz.style.right = needsV ? sWidth + "px" : "0";
	this.horiz.style.left = measure.barLeft + "px";
	var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);
	this.horiz.firstChild.style.width =
	(measure.scrollWidth - measure.clientWidth + totalWidth) + "px";
	} else {
	this.horiz.style.display = "";
	this.horiz.firstChild.style.width = "0";
	}

	if (!this.checkedZeroWidth && measure.clientHeight > 0) {
	if (sWidth == 0) this.zeroWidthHack();
	this.checkedZeroWidth = true;
	}

	return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0};
	},
	setScrollLeft: function(pos) {
	if (this.horiz.scrollLeft != pos) this.horiz.scrollLeft = pos;
	if (this.disableHoriz) this.enableZeroWidthBar(this.horiz, this.disableHoriz);
	},
	setScrollTop: function(pos) {
	if (this.vert.scrollTop != pos) this.vert.scrollTop = pos;
	if (this.disableVert) this.enableZeroWidthBar(this.vert, this.disableVert);
	},
	zeroWidthHack: function() {
	var w = mac && !mac_geMountainLion ? "12px" : "18px";
	this.horiz.style.height = this.vert.style.width = w;
	this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none";
	this.disableHoriz = new Delayed;
	this.disableVert = new Delayed;
	},
	enableZeroWidthBar: function(bar, delay) {
	bar.style.pointerEvents = "auto";
	function maybeDisable() {
	// To find out whether the scrollbar is still visible, we
	// check whether the element under the pixel in the bottom
	// left corner of the scrollbar box is the scrollbar box
	// itself (when the bar is still visible) or its filler child
	// (when the bar is hidden). If it is still visible, we keep
	// it enabled, if it's hidden, we disable pointer events.
	var box = bar.getBoundingClientRect();
	var elt = document.elementFromPoint(box.left + 1, box.bottom - 1);
	if (elt != bar) bar.style.pointerEvents = "none";
	else delay.set(1000, maybeDisable);
	}
	delay.set(1000, maybeDisable);
	},
	clear: function() {
	var parent = this.horiz.parentNode;
	parent.removeChild(this.horiz);
	parent.removeChild(this.vert);
	}
	}, NativeScrollbars.prototype);

	function NullScrollbars() {}

	NullScrollbars.prototype = copyObj({
	update: function() { return {bottom: 0, right: 0}; },
	setScrollLeft: function() {},
	setScrollTop: function() {},
	clear: function() {}
	}, NullScrollbars.prototype);

	CodeMirror.scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars};

	function initScrollbars(cm) {
	if (cm.display.scrollbars) {
	cm.display.scrollbars.clear();
	if (cm.display.scrollbars.addClass)
	rmClass(cm.display.wrapper, cm.display.scrollbars.addClass);
	}

	cm.display.scrollbars = new CodeMirror.scrollbarModel[cm.options.scrollbarStyle](function(node) {
	cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);
	// Prevent clicks in the scrollbars from killing focus
	on(node, "mousedown", function() {
	if (cm.state.focused) setTimeout(function() { cm.display.input.focus(); }, 0);
	});
	node.setAttribute("cm-not-content", "true");
	}, function(pos, axis) {
	if (axis == "horizontal") setScrollLeft(cm, pos);
	else setScrollTop(cm, pos);
	}, cm);
	if (cm.display.scrollbars.addClass)
	addClass(cm.display.wrapper, cm.display.scrollbars.addClass);
	}

	function updateScrollbars(cm, measure) {
	if (!measure) measure = measureForScrollbars(cm);
	var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;
	updateScrollbarsInner(cm, measure);
	for (var i = 0; i < 4 && startWidth != cm.display.barWidth \|\| startHeight != cm.display.barHeight; i++) {
	if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
	updateHeightsInViewport(cm);
	updateScrollbarsInner(cm, measureForScrollbars(cm));
	startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;
	}
	}

	// Re-synchronize the fake scrollbars with the actual size of the
	// content.
	function updateScrollbarsInner(cm, measure) {
	var d = cm.display;
	var sizes = d.scrollbars.update(measure);

	d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px";
	d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px";

	if (sizes.right && sizes.bottom) {
	d.scrollbarFiller.style.display = "block";
	d.scrollbarFiller.style.height = sizes.bottom + "px";
	d.scrollbarFiller.style.width = sizes.right + "px";
	} else d.scrollbarFiller.style.display = "";
	if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
	d.gutterFiller.style.display = "block";
	d.gutterFiller.style.height = sizes.bottom + "px";
	d.gutterFiller.style.width = measure.gutterWidth + "px";
	} else d.gutterFiller.style.display = "";
	}

	// Compute the lines that are visible in a given viewport (defaults
	// the the current scroll position). viewport may contain top,
	// height, and ensure (see op.scrollToPos) properties.
	function visibleLines(display, doc, viewport) {
	var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;
	top = Math.floor(top - paddingTop(display));
	var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;

	var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
	// Ensure is a {from: {line, ch}, to: {line, ch}} object, and
	// forces those lines into the viewport (if possible).
	if (viewport && viewport.ensure) {
	var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;
	if (ensureFrom < from) {
	from = ensureFrom;
	to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);
	} else if (Math.min(ensureTo, doc.lastLine()) >= to) {
	from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);
	to = ensureTo;
	}
	}
	return {from: from, to: Math.max(to, from + 1)};
	}

	// LINE NUMBERS

	// Re-align line numbers and gutter marks to compensate for
	// horizontal scrolling.
	function alignHorizontally(cm) {
	var display = cm.display, view = display.view;
	if (!display.alignWidgets && (!display.gutters.firstChild \|\| !cm.options.fixedGutter)) return;
	var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
	var gutterW = display.gutters.offsetWidth, left = comp + "px";
	for (var i = 0; i < view.length; i++) if (!view[i].hidden) {
	if (cm.options.fixedGutter && view[i].gutter)
	view[i].gutter.style.left = left;
	var align = view[i].alignable;
	if (align) for (var j = 0; j < align.length; j++)
	align[j].style.left = left;
	}
	if (cm.options.fixedGutter)
	display.gutters.style.left = (comp + gutterW) + "px";
	}

	// Used to ensure that the line number gutter is still the right
	// size for the current document size. Returns true when an update
	// is needed.
	function maybeUpdateLineNumberWidth(cm) {
	if (!cm.options.lineNumbers) return false;
	var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
	if (last.length != display.lineNumChars) {
	var test = display.measure.appendChild(elt("div", [elt("div", last)],
	"CodeMirror-linenumber CodeMirror-gutter-elt"));
	var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
	display.lineGutter.style.width = "";
	display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;
	display.lineNumWidth = display.lineNumInnerWidth + padding;
	display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
	display.lineGutter.style.width = display.lineNumWidth + "px";
	updateGutterSpace(cm);
	return true;
	}
	return false;
	}

	function lineNumberFor(options, i) {
	return String(options.lineNumberFormatter(i + options.firstLineNumber));
	}

	// Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
	// but using getBoundingClientRect to get a sub-pixel-accurate
	// result.
	function compensateForHScroll(display) {
	return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
	}

	// DISPLAY DRAWING

	function DisplayUpdate(cm, viewport, force) {
	var display = cm.display;

	this.viewport = viewport;
	// Store some values that we'll need later (but don't want to force a relayout for)
	this.visible = visibleLines(display, cm.doc, viewport);
	this.editorIsHidden = !display.wrapper.offsetWidth;
	this.wrapperHeight = display.wrapper.clientHeight;
	this.wrapperWidth = display.wrapper.clientWidth;
	this.oldDisplayWidth = displayWidth(cm);
	this.force = force;
	this.dims = getDimensions(cm);
	this.events = [];
	}

	DisplayUpdate.prototype.signal = function(emitter, type) {
	if (hasHandler(emitter, type))
	this.events.push(arguments);
	};
	DisplayUpdate.prototype.finish = function() {
	for (var i = 0; i < this.events.length; i++)
	signal.apply(null, this.events[i]);
	};

	function maybeClipScrollbars(cm) {
	var display = cm.display;
	if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
	display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;
	display.heightForcer.style.height = scrollGap(cm) + "px";
	display.sizer.style.marginBottom = -display.nativeBarWidth + "px";
	display.sizer.style.borderRightWidth = scrollGap(cm) + "px";
	display.scrollbarsClipped = true;
	}
	}

	// Does the actual updating of the line display. Bails out
	// (returning false) when there is nothing to be done and forced is
	// false.
	function updateDisplayIfNeeded(cm, update) {
	var display = cm.display, doc = cm.doc;

	if (update.editorIsHidden) {
	resetView(cm);
	return false;
	}

	// Bail out if the visible area is already rendered and nothing changed.
	if (!update.force &&
	update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
	(display.updateLineNumbers == null \|\| display.updateLineNumbers >= display.viewTo) &&
	display.renderedView == display.view && countDirtyView(cm) == 0)
	return false;

	if (maybeUpdateLineNumberWidth(cm)) {
	resetView(cm);
	update.dims = getDimensions(cm);
	}

	// Compute a suitable new viewport (from & to)
	var end = doc.first + doc.size;
	var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);
	var to = Math.min(end, update.visible.to + cm.options.viewportMargin);
	if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);
	if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);
	if (sawCollapsedSpans) {
	from = visualLineNo(cm.doc, from);
	to = visualLineEndNo(cm.doc, to);
	}

	var different = from != display.viewFrom \|\| to != display.viewTo \|\|
	display.lastWrapHeight != update.wrapperHeight \|\| display.lastWrapWidth != update.wrapperWidth;
	adjustView(cm, from, to);

	display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
	// Position the mover div to align with the current scroll position
	cm.display.mover.style.top = display.viewOffset + "px";

	var toUpdate = countDirtyView(cm);
	if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
	(display.updateLineNumbers == null \|\| display.updateLineNumbers >= display.viewTo))
	return false;

	// For big changes, we hide the enclosing element during the
	// update, since that speeds up the operations on most browsers.
	var focused = activeElt();
	if (toUpdate > 4) display.lineDiv.style.display = "none";
	patchDisplay(cm, display.updateLineNumbers, update.dims);
	if (toUpdate > 4) display.lineDiv.style.display = "";
	display.renderedView = display.view;
	// There might have been a widget with a focused element that got
	// hidden or updated, if so re-focus it.
	if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();

	// Prevent selection and cursors from interfering with the scroll
	// width and height.
	removeChildren(display.cursorDiv);
	removeChildren(display.selectionDiv);
	display.gutters.style.height = display.sizer.style.minHeight = 0;

	if (different) {
	display.lastWrapHeight = update.wrapperHeight;
	display.lastWrapWidth = update.wrapperWidth;
	startWorker(cm, 400);
	}

	display.updateLineNumbers = null;

	return true;
	}

	function postUpdateDisplay(cm, update) {
	var viewport = update.viewport;
	for (var first = true;; first = false) {
	if (!first \|\| !cm.options.lineWrapping \|\| update.oldDisplayWidth == displayWidth(cm)) {
	// Clip forced viewport to actual scrollable area.
	if (viewport && viewport.top != null)
	viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)};
	// Updated line heights might result in the drawn area not
	// actually covering the viewport. Keep looping until it does.
	update.visible = visibleLines(cm.display, cm.doc, viewport);
	if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
	break;
	}
	if (!updateDisplayIfNeeded(cm, update)) break;
	updateHeightsInViewport(cm);
	var barMeasure = measureForScrollbars(cm);
	updateSelection(cm);
	setDocumentHeight(cm, barMeasure);
	updateScrollbars(cm, barMeasure);
	}

	update.signal(cm, "update", cm);
	if (cm.display.viewFrom != cm.display.reportedViewFrom \|\| cm.display.viewTo != cm.display.reportedViewTo) {
	update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
	cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;
	}
	}

	function updateDisplaySimple(cm, viewport) {
	var update = new DisplayUpdate(cm, viewport);
	if (updateDisplayIfNeeded(cm, update)) {
	updateHeightsInViewport(cm);
	postUpdateDisplay(cm, update);
	var barMeasure = measureForScrollbars(cm);
	updateSelection(cm);
	setDocumentHeight(cm, barMeasure);
	updateScrollbars(cm, barMeasure);
	update.finish();
	}
	}

	function setDocumentHeight(cm, measure) {
	cm.display.sizer.style.minHeight = measure.docHeight + "px";
	var total = measure.docHeight + cm.display.barHeight;
	cm.display.heightForcer.style.top = total + "px";
	cm.display.gutters.style.height = Math.max(total + scrollGap(cm), measure.clientHeight) + "px";
	}

	// Read the actual heights of the rendered lines, and update their
	// stored heights to match.
	function updateHeightsInViewport(cm) {
	var display = cm.display;
	var prevBottom = display.lineDiv.offsetTop;
	for (var i = 0; i < display.view.length; i++) {
	var cur = display.view[i], height;
	if (cur.hidden) continue;
	if (ie && ie_version < 8) {
	var bot = cur.node.offsetTop + cur.node.offsetHeight;
	height = bot - prevBottom;
	prevBottom = bot;
	} else {
	var box = cur.node.getBoundingClientRect();
	height = box.bottom - box.top;
	}
	var diff = cur.line.height - height;
	if (height < 2) height = textHeight(display);
	if (diff > .001 \|\| diff < -.001) {
	updateLineHeight(cur.line, height);
	updateWidgetHeight(cur.line);
	if (cur.rest) for (var j = 0; j < cur.rest.length; j++)
	updateWidgetHeight(cur.rest[j]);
	}
	}
	}

	// Read and store the height of line widgets associated with the
	// given line.
	function updateWidgetHeight(line) {
	if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)
	line.widgets[i].height = line.widgets[i].node.parentNode.offsetHeight;
	}

	// Do a bulk-read of the DOM positions and sizes needed to draw the
	// view, so that we don't interleave reading and writing to the DOM.
	function getDimensions(cm) {
	var d = cm.display, left = {}, width = {};
	var gutterLeft = d.gutters.clientLeft;
	for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
	left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft;
	width[cm.options.gutters[i]] = n.clientWidth;
	}
	return {fixedPos: compensateForHScroll(d),
	gutterTotalWidth: d.gutters.offsetWidth,
	gutterLeft: left,
	gutterWidth: width,
	wrapperWidth: d.wrapper.clientWidth};
	}

	// Sync the actual display DOM structure with display.view, removing
	// nodes for lines that are no longer in view, and creating the ones
	// that are not there yet, and updating the ones that are out of
	// date.
	function patchDisplay(cm, updateNumbersFrom, dims) {
	var display = cm.display, lineNumbers = cm.options.lineNumbers;
	var container = display.lineDiv, cur = container.firstChild;

	function rm(node) {
	var next = node.nextSibling;
	// Works around a throw-scroll bug in OS X Webkit
	if (webkit && mac && cm.display.currentWheelTarget == node)
	node.style.display = "none";
	else
	node.parentNode.removeChild(node);
	return next;
	}

	var view = display.view, lineN = display.viewFrom;
	// Loop over the elements in the view, syncing cur (the DOM nodes
	// in display.lineDiv) with the view as we go.
	for (var i = 0; i < view.length; i++) {
	var lineView = view[i];
	if (lineView.hidden) {
	} else if (!lineView.node \|\| lineView.node.parentNode != container) { // Not drawn yet
	var node = buildLineElement(cm, lineView, lineN, dims);
	container.insertBefore(node, cur);
	} else { // Already drawn
	while (cur != lineView.node) cur = rm(cur);
	var updateNumber = lineNumbers && updateNumbersFrom != null &&
	updateNumbersFrom <= lineN && lineView.lineNumber;
	if (lineView.changes) {
	if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false;
	updateLineForChanges(cm, lineView, lineN, dims);
	}
	if (updateNumber) {
	removeChildren(lineView.lineNumber);
	lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
	}
	cur = lineView.node.nextSibling;
	}
	lineN += lineView.size;
	}
	while (cur) cur = rm(cur);
	}

	// When an aspect of a line changes, a string is added to
	// lineView.changes. This updates the relevant part of the line's
	// DOM structure.
	function updateLineForChanges(cm, lineView, lineN, dims) {
	for (var j = 0; j < lineView.changes.length; j++) {
	var type = lineView.changes[j];
	if (type == "text") updateLineText(cm, lineView);
	else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims);
	else if (type == "class") updateLineClasses(lineView);
	else if (type == "widget") updateLineWidgets(cm, lineView, dims);
	}
	lineView.changes = null;
	}

	// Lines with gutter elements, widgets or a background class need to
	// be wrapped, and have the extra elements added to the wrapper div
	function ensureLineWrapped(lineView) {
	if (lineView.node == lineView.text) {
	lineView.node = elt("div", null, null, "position: relative");
	if (lineView.text.parentNode)
	lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
	lineView.node.appendChild(lineView.text);
	if (ie && ie_version < 8) lineView.node.style.zIndex = 2;
	}
	return lineView.node;
	}

	function updateLineBackground(lineView) {
	var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass \|\| "") : lineView.line.bgClass;
	if (cls) cls += " CodeMirror-linebackground";
	if (lineView.background) {
	if (cls) lineView.background.className = cls;
	else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
	} else if (cls) {
	var wrap = ensureLineWrapped(lineView);
	lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
	}
	}

	// Wrapper around buildLineContent which will reuse the structure
	// in display.externalMeasured when possible.
	function getLineContent(cm, lineView) {
	var ext = cm.display.externalMeasured;
	if (ext && ext.line == lineView.line) {
	cm.display.externalMeasured = null;
	lineView.measure = ext.measure;
	return ext.built;
	}
	return buildLineContent(cm, lineView);
	}

	// Redraw the line's text. Interacts with the background and text
	// classes because the mode may output tokens that influence these
	// classes.
	function updateLineText(cm, lineView) {
	var cls = lineView.text.className;
	var built = getLineContent(cm, lineView);
	if (lineView.text == lineView.node) lineView.node = built.pre;
	lineView.text.parentNode.replaceChild(built.pre, lineView.text);
	lineView.text = built.pre;
	if (built.bgClass != lineView.bgClass \|\| built.textClass != lineView.textClass) {
	lineView.bgClass = built.bgClass;
	lineView.textClass = built.textClass;
	updateLineClasses(lineView);
	} else if (cls) {
	lineView.text.className = cls;
	}
	}

	function updateLineClasses(lineView) {
	updateLineBackground(lineView);
	if (lineView.line.wrapClass)
	ensureLineWrapped(lineView).className = lineView.line.wrapClass;
	else if (lineView.node != lineView.text)
	lineView.node.className = "";
	var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass \|\| "") : lineView.line.textClass;
	lineView.text.className = textClass \|\| "";
	}

	function updateLineGutter(cm, lineView, lineN, dims) {
	if (lineView.gutter) {
	lineView.node.removeChild(lineView.gutter);
	lineView.gutter = null;
	}
	if (lineView.gutterBackground) {
	lineView.node.removeChild(lineView.gutterBackground);
	lineView.gutterBackground = null;
	}
	if (lineView.line.gutterClass) {
	var wrap = ensureLineWrapped(lineView);
	lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass,
	"left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) +
	"px; width: " + dims.gutterTotalWidth + "px");
	wrap.insertBefore(lineView.gutterBackground, lineView.text);
	}
	var markers = lineView.line.gutterMarkers;
	if (cm.options.lineNumbers \|\| markers) {
	var wrap = ensureLineWrapped(lineView);
	var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", "left: " +
	(cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px");
	cm.display.input.setUneditable(gutterWrap);
	wrap.insertBefore(gutterWrap, lineView.text);
	if (lineView.line.gutterClass)
	gutterWrap.className += " " + lineView.line.gutterClass;
	if (cm.options.lineNumbers && (!markers \|\| !markers["CodeMirror-linenumbers"]))
	lineView.lineNumber = gutterWrap.appendChild(
	elt("div", lineNumberFor(cm.options, lineN),
	"CodeMirror-linenumber CodeMirror-gutter-elt",
	"left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
	+ cm.display.lineNumInnerWidth + "px"));
	if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) {
	var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
	if (found)
	gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
	dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
	}
	}
	}

	function updateLineWidgets(cm, lineView, dims) {
	if (lineView.alignable) lineView.alignable = null;
	for (var node = lineView.node.firstChild, next; node; node = next) {
	var next = node.nextSibling;
	if (node.className == "CodeMirror-linewidget")
	lineView.node.removeChild(node);
	}
	insertLineWidgets(cm, lineView, dims);
	}

	// Build a line's DOM representation from scratch
	function buildLineElement(cm, lineView, lineN, dims) {
	var built = getLineContent(cm, lineView);
	lineView.text = lineView.node = built.pre;
	if (built.bgClass) lineView.bgClass = built.bgClass;
	if (built.textClass) lineView.textClass = built.textClass;

	updateLineClasses(lineView);
	updateLineGutter(cm, lineView, lineN, dims);
	insertLineWidgets(cm, lineView, dims);
	return lineView.node;
	}

	// A lineView may contain multiple logical lines (when merged by
	// collapsed spans). The widgets for all of them need to be drawn.
	function insertLineWidgets(cm, lineView, dims) {
	insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);
	if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
	insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false);
	}

	function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
	if (!line.widgets) return;
	var wrap = ensureLineWrapped(lineView);
	for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
	var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
	if (!widget.handleMouseEvents) node.setAttribute("cm-ignore-events", "true");
	positionLineWidget(widget, node, lineView, dims);
	cm.display.input.setUneditable(node);
	if (allowAbove && widget.above)
	wrap.insertBefore(node, lineView.gutter \|\| lineView.text);
	else
	wrap.appendChild(node);
	signalLater(widget, "redraw");
	}
	}

	function positionLineWidget(widget, node, lineView, dims) {
	if (widget.noHScroll) {
	(lineView.alignable \|\| (lineView.alignable = [])).push(node);
	var width = dims.wrapperWidth;
	node.style.left = dims.fixedPos + "px";
	if (!widget.coverGutter) {
	width -= dims.gutterTotalWidth;
	node.style.paddingLeft = dims.gutterTotalWidth + "px";
	}
	node.style.width = width + "px";
	}
	if (widget.coverGutter) {
	node.style.zIndex = 5;
	node.style.position = "relative";
	if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
	}
	}

	// POSITION OBJECT

	// A Pos instance represents a position within the text.
	var Pos = CodeMirror.Pos = function(line, ch) {
	if (!(this instanceof Pos)) return new Pos(line, ch);
	this.line = line; this.ch = ch;
	};

	// Compare two positions, return 0 if they are the same, a negative
	// number when a is less, and a positive number otherwise.
	var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line \|\| a.ch - b.ch; };

	function copyPos(x) {return Pos(x.line, x.ch);}
	function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; }
	function minPos(a, b) { return cmp(a, b) < 0 ? a : b; }

	// INPUT HANDLING

	function ensureFocus(cm) {
	if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); }
	}

	function isReadOnly(cm) {
	return cm.options.readOnly \|\| cm.doc.cantEdit;
	}

	// This will be set to an array of strings when copying, so that,
	// when pasting, we know what kind of selections the copied text
	// was made out of.
	var lastCopied = null;

	function applyTextInput(cm, inserted, deleted, sel, origin) {
	var doc = cm.doc;
	cm.display.shift = false;
	if (!sel) sel = doc.sel;

	var paste = cm.state.pasteIncoming \|\| origin == "paste";
	var textLines = doc.splitLines(inserted), multiPaste = null;
	// When pasing N lines into N selections, insert one line per selection
	if (paste && sel.ranges.length > 1) {
	if (lastCopied && lastCopied.join("\n") == inserted) {
	if (sel.ranges.length % lastCopied.length == 0) {
	multiPaste = [];
	for (var i = 0; i < lastCopied.length; i++)
	multiPaste.push(doc.splitLines(lastCopied[i]));
	}
	} else if (textLines.length == sel.ranges.length) {
	multiPaste = map(textLines, function(l) { return [l]; });
	}
	}

	// Normal behavior is to insert the new text into every selection
	for (var i = sel.ranges.length - 1; i >= 0; i--) {
	var range = sel.ranges[i];
	var from = range.from(), to = range.to();
	if (range.empty()) {
	if (deleted && deleted > 0) // Handle deletion
	from = Pos(from.line, from.ch - deleted);
	else if (cm.state.overwrite && !paste) // Handle overwrite
	to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
	}
	var updateInput = cm.curOp.updateInput;
	var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines,
	origin: origin \|\| (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")};
	makeChange(cm.doc, changeEvent);
	signalLater(cm, "inputRead", cm, changeEvent);
	}
	if (inserted && !paste)
	triggerElectric(cm, inserted);

	ensureCursorVisible(cm);
	cm.curOp.updateInput = updateInput;
	cm.curOp.typing = true;
	cm.state.pasteIncoming = cm.state.cutIncoming = false;
	}

	function handlePaste(e, cm) {
	var pasted = e.clipboardData && e.clipboardData.getData("text/plain");
	if (pasted) {
	e.preventDefault();
	if (!isReadOnly(cm) && !cm.options.disableInput)
	runInOp(cm, function() { applyTextInput(cm, pasted, 0, null, "paste"); });
	return true;
	}
	}

	function triggerElectric(cm, inserted) {
	// When an 'electric' character is inserted, immediately trigger a reindent
	if (!cm.options.electricChars \|\| !cm.options.smartIndent) return;
	var sel = cm.doc.sel;

	for (var i = sel.ranges.length - 1; i >= 0; i--) {
	var range = sel.ranges[i];
	if (range.head.ch > 100 \|\| (i && sel.ranges[i - 1].head.line == range.head.line)) continue;
	var mode = cm.getModeAt(range.head);
	var indented = false;
	if (mode.electricChars) {
	for (var j = 0; j < mode.electricChars.length; j++)
	if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
	indented = indentLine(cm, range.head.line, "smart");
	break;
	}
	} else if (mode.electricInput) {
	if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))
	indented = indentLine(cm, range.head.line, "smart");
	}
	if (indented) signalLater(cm, "electricInput", cm, range.head.line);
	}
	}

	function copyableRanges(cm) {
	var text = [], ranges = [];
	for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
	var line = cm.doc.sel.ranges[i].head.line;
	var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
	ranges.push(lineRange);
	text.push(cm.getRange(lineRange.anchor, lineRange.head));
	}
	return {text: text, ranges: ranges};
	}

	function disableBrowserMagic(field) {
	field.setAttribute("autocorrect", "off");
	field.setAttribute("autocapitalize", "off");
	field.setAttribute("spellcheck", "false");
	}

	// TEXTAREA INPUT STYLE

	function TextareaInput(cm) {
	this.cm = cm;
	// See input.poll and input.reset
	this.prevInput = "";

	// Flag that indicates whether we expect input to appear real soon
	// now (after some event like 'keypress' or 'input') and are
	// polling intensively.
	this.pollingFast = false;
	// Self-resetting timeout for the poller
	this.polling = new Delayed();
	// Tracks when input.reset has punted to just putting a short
	// string into the textarea instead of the full selection.
	this.inaccurateSelection = false;
	// Used to work around IE issue with selection being forgotten when focus moves away from textarea
	this.hasSelection = false;
	this.composing = null;
	};

	function hiddenTextarea() {
	var te = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
	var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
	// The textarea is kept positioned near the cursor to prevent the
	// fact that it'll be scrolled into view on input from scrolling
	// our fake cursor out of view. On webkit, when wrap=off, paste is
	// very slow. So make the area wide instead.
	if (webkit) te.style.width = "1000px";
	else te.setAttribute("wrap", "off");
	// If border: 0; -- iOS fails to open keyboard (issue #1287)
	if (ios) te.style.border = "1px solid black";
	disableBrowserMagic(te);
	return div;
	}

	TextareaInput.prototype = copyObj({
	init: function(display) {
	var input = this, cm = this.cm;

	// Wraps and hides input textarea
	var div = this.wrapper = hiddenTextarea();
	// The semihidden textarea that is focused when the editor is
	// focused, and receives input.
	var te = this.textarea = div.firstChild;
	display.wrapper.insertBefore(div, display.wrapper.firstChild);

	// Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)
	if (ios) te.style.width = "0px";

	on(te, "input", function() {
	if (ie && ie_version >= 9 && input.hasSelection) input.hasSelection = null;
	input.poll();
	});

	on(te, "paste", function(e) {
	if (handlePaste(e, cm)) return true;

	cm.state.pasteIncoming = true;
	input.fastPoll();
	});

	function prepareCopyCut(e) {
	if (cm.somethingSelected()) {
	lastCopied = cm.getSelections();
	if (input.inaccurateSelection) {
	input.prevInput = "";
	input.inaccurateSelection = false;
	te.value = lastCopied.join("\n");
	selectInput(te);
	}
	} else if (!cm.options.lineWiseCopyCut) {
	return;
	} else {
	var ranges = copyableRanges(cm);
	lastCopied = ranges.text;
	if (e.type == "cut") {
	cm.setSelections(ranges.ranges, null, sel_dontScroll);
	} else {
	input.prevInput = "";
	te.value = ranges.text.join("\n");
	selectInput(te);
	}
	}
	if (e.type == "cut") cm.state.cutIncoming = true;
	}
	on(te, "cut", prepareCopyCut);
	on(te, "copy", prepareCopyCut);

	on(display.scroller, "paste", function(e) {
	if (eventInWidget(display, e)) return;
	cm.state.pasteIncoming = true;
	input.focus();
	});

	// Prevent normal selection in the editor (we handle our own)
	on(display.lineSpace, "selectstart", function(e) {
	if (!eventInWidget(display, e)) e_preventDefault(e);
	});

	on(te, "compositionstart", function() {
	var start = cm.getCursor("from");
	if (input.composing) input.composing.range.clear()
	input.composing = {
	start: start,
	range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"})
	};
	});
	on(te, "compositionend", function() {
	if (input.composing) {
	input.poll();
	input.composing.range.clear();
	input.composing = null;
	}
	});
	},

	prepareSelection: function() {
	// Redraw the selection and/or cursor
	var cm = this.cm, display = cm.display, doc = cm.doc;
	var result = prepareSelection(cm);

	// Move the hidden textarea near the cursor to prevent scrolling artifacts
	if (cm.options.moveInputWithCursor) {
	var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
	var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
	result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
	headPos.top + lineOff.top - wrapOff.top));
	result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
	headPos.left + lineOff.left - wrapOff.left));
	}

	return result;
	},

	showSelection: function(drawn) {
	var cm = this.cm, display = cm.display;
	removeChildrenAndAdd(display.cursorDiv, drawn.cursors);
	removeChildrenAndAdd(display.selectionDiv, drawn.selection);
	if (drawn.teTop != null) {
	this.wrapper.style.top = drawn.teTop + "px";
	this.wrapper.style.left = drawn.teLeft + "px";
	}
	},

	// Reset the input to correspond to the selection (or to be empty,
	// when not typing and nothing is selected)
	reset: function(typing) {
	if (this.contextMenuPending) return;
	var minimal, selected, cm = this.cm, doc = cm.doc;
	if (cm.somethingSelected()) {
	this.prevInput = "";
	var range = doc.sel.primary();
	minimal = hasCopyEvent &&
	(range.to().line - range.from().line > 100 \|\| (selected = cm.getSelection()).length > 1000);
	var content = minimal ? "-" : selected \|\| cm.getSelection();
	this.textarea.value = content;
	if (cm.state.focused) selectInput(this.textarea);
	if (ie && ie_version >= 9) this.hasSelection = content;
	} else if (!typing) {
	this.prevInput = this.textarea.value = "";
	if (ie && ie_version >= 9) this.hasSelection = null;
	}
	this.inaccurateSelection = minimal;
	},

	getField: function() { return this.textarea; },

	supportsTouch: function() { return false; },

	focus: function() {
	if (this.cm.options.readOnly != "nocursor" && (!mobile \|\| activeElt() != this.textarea)) {
	try { this.textarea.focus(); }
	catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
	}
	},

	blur: function() { this.textarea.blur(); },

	resetPosition: function() {
	this.wrapper.style.top = this.wrapper.style.left = 0;
	},

	receivedFocus: function() { this.slowPoll(); },

	// Poll for input changes, using the normal rate of polling. This
	// runs as long as the editor is focused.
	slowPoll: function() {
	var input = this;
	if (input.pollingFast) return;
	input.polling.set(this.cm.options.pollInterval, function() {
	input.poll();
	if (input.cm.state.focused) input.slowPoll();
	});
	},

	// When an event has just come in that is likely to add or change
	// something in the input textarea, we poll faster, to ensure that
	// the change appears on the screen quickly.
	fastPoll: function() {
	var missed = false, input = this;
	input.pollingFast = true;
	function p() {
	var changed = input.poll();
	if (!changed && !missed) {missed = true; input.polling.set(60, p);}
	else {input.pollingFast = false; input.slowPoll();}
	}
	input.polling.set(20, p);
	},

	// Read input from the textarea, and update the document to match.
	// When something is selected, it is present in the textarea, and
	// selected (unless it is huge, in which case a placeholder is
	// used). When nothing is selected, the cursor sits after previously
	// seen text (can be empty), which is stored in prevInput (we must
	// not reset the textarea when typing, because that breaks IME).
	poll: function() {
	var cm = this.cm, input = this.textarea, prevInput = this.prevInput;
	// Since this is called a lot, try to bail out as cheaply as
	// possible when it is clear that nothing happened. hasSelection
	// will be the case when there is a lot of text in the textarea,
	// in which case reading its value would be expensive.
	if (this.contextMenuPending \|\| !cm.state.focused \|\|
	(hasSelection(input) && !prevInput && !this.composing) \|\|
	isReadOnly(cm) \|\| cm.options.disableInput \|\| cm.state.keySeq)
	return false;

	var text = input.value;
	// If nothing changed, bail.
	if (text == prevInput && !cm.somethingSelected()) return false;
	// Work around nonsensical selection resetting in IE9/10, and
	// inexplicable appearance of private area unicode characters on
	// some key combos in Mac (#2689).
	if (ie && ie_version >= 9 && this.hasSelection === text \|\|
	mac && /[\uf700-\uf7ff]/.test(text)) {
	cm.display.input.reset();
	return false;
	}

	if (cm.doc.sel == cm.display.selForContextMenu) {
	var first = text.charCodeAt(0);
	if (first == 0x200b && !prevInput) prevInput = "\u200b";
	if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo"); }
	}
	// Find the part of the input that is actually new
	var same = 0, l = Math.min(prevInput.length, text.length);
	while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;

	var self = this;
	runInOp(cm, function() {
	applyTextInput(cm, text.slice(same), prevInput.length - same,
	null, self.composing ? "*compose" : null);

	// Don't leave long text in the textarea, since it makes further polling slow
	if (text.length > 1000 \|\| text.indexOf("\n") > -1) input.value = self.prevInput = "";
	else self.prevInput = text;

	if (self.composing) {
	self.composing.range.clear();
	self.composing.range = cm.markText(self.composing.start, cm.getCursor("to"),
	{className: "CodeMirror-composing"});
	}
	});
	return true;
	},

	ensurePolled: function() {
	if (this.pollingFast && this.poll()) this.pollingFast = false;
	},

	onKeyPress: function() {
	if (ie && ie_version >= 9) this.hasSelection = null;
	this.fastPoll();
	},

	onContextMenu: function(e) {
	var input = this, cm = input.cm, display = cm.display, te = input.textarea;
	var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
	if (!pos \|\| presto) return; // Opera is difficult.

	// Reset the current text selection only if the click is done outside of the selection
	// and 'resetSelectionOnContextMenu' option is true.
	var reset = cm.options.resetSelectionOnContextMenu;
	if (reset && cm.doc.sel.contains(pos) == -1)
	operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll);

	var oldCSS = te.style.cssText;
	input.wrapper.style.position = "absolute";
	te.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
	"px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " +
	(ie ? "rgba(255, 255, 255, .05)" : "transparent") +
	"; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
	if (webkit) var oldScrollY = window.scrollY; // Work around Chrome issue (#2712)
	display.input.focus();
	if (webkit) window.scrollTo(null, oldScrollY);
	display.input.reset();
	// Adds "Select all" to context menu in FF
	if (!cm.somethingSelected()) te.value = input.prevInput = " ";
	input.contextMenuPending = true;
	display.selForContextMenu = cm.doc.sel;
	clearTimeout(display.detectingSelectAll);

	// Select-all will be greyed out if there's nothing to select, so
	// this adds a zero-width space so that we can later check whether
	// it got selected.
	function prepareSelectAllHack() {
	if (te.selectionStart != null) {
	var selected = cm.somethingSelected();
	var extval = "\u200b" + (selected ? te.value : "");
	te.value = "\u21da"; // Used to catch context-menu undo
	te.value = extval;
	input.prevInput = selected ? "" : "\u200b";
	te.selectionStart = 1; te.selectionEnd = extval.length;
	// Re-set this, in case some other handler touched the
	// selection in the meantime.
	display.selForContextMenu = cm.doc.sel;
	}
	}
	function rehide() {
	input.contextMenuPending = false;
	input.wrapper.style.position = "relative";
	te.style.cssText = oldCSS;
	if (ie && ie_version < 9) display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos);

	// Try to detect the user choosing select-all
	if (te.selectionStart != null) {
	if (!ie \|\| (ie && ie_version < 9)) prepareSelectAllHack();
	var i = 0, poll = function() {
	if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&
	te.selectionEnd > 0 && input.prevInput == "\u200b")
	operation(cm, commands.selectAll)(cm);
	else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500);
	else display.input.reset();
	};
	display.detectingSelectAll = setTimeout(poll, 200);
	}
	}

	if (ie && ie_version >= 9) prepareSelectAllHack();
	if (captureRightClick) {
	e_stop(e);
	var mouseup = function() {
	off(window, "mouseup", mouseup);
	setTimeout(rehide, 20);
	};
	on(window, "mouseup", mouseup);
	} else {
	setTimeout(rehide, 50);
	}
	},

	readOnlyChanged: function(val) {
	if (!val) this.reset();
	},

	setUneditable: nothing,

	needsContentAttribute: false
	}, TextareaInput.prototype);

	// CONTENTEDITABLE INPUT STYLE

	function ContentEditableInput(cm) {
	this.cm = cm;
	this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;
	this.polling = new Delayed();
	this.gracePeriod = false;
	}

	ContentEditableInput.prototype = copyObj({
	init: function(display) {
	var input = this, cm = input.cm;
	var div = input.div = display.lineDiv;
	disableBrowserMagic(div);

	on(div, "paste", function(e) { handlePaste(e, cm); })

	on(div, "compositionstart", function(e) {
	var data = e.data;
	input.composing = {sel: cm.doc.sel, data: data, startData: data};
	if (!data) return;
	var prim = cm.doc.sel.primary();
	var line = cm.getLine(prim.head.line);
	var found = line.indexOf(data, Math.max(0, prim.head.ch - data.length));
	if (found > -1 && found <= prim.head.ch)
	input.composing.sel = simpleSelection(Pos(prim.head.line, found),
	Pos(prim.head.line, found + data.length));
	});
	on(div, "compositionupdate", function(e) {
	input.composing.data = e.data;
	});
	on(div, "compositionend", function(e) {
	var ours = input.composing;
	if (!ours) return;
	if (e.data != ours.startData && !/\u200b/.test(e.data))
	ours.data = e.data;
	// Need a small delay to prevent other code (input event,
	// selection polling) from doing damage when fired right after
	// compositionend.
	setTimeout(function() {
	if (!ours.handled)
	input.applyComposition(ours);
	if (input.composing == ours)
	input.composing = null;
	}, 50);
	});

	on(div, "touchstart", function() {
	input.forceCompositionEnd();
	});

	on(div, "input", function() {
	if (input.composing) return;
	if (isReadOnly(cm) \|\| !input.pollContent())
	runInOp(input.cm, function() {regChange(cm);});
	});

	function onCopyCut(e) {
	if (cm.somethingSelected()) {
	lastCopied = cm.getSelections();
	if (e.type == "cut") cm.replaceSelection("", null, "cut");
	} else if (!cm.options.lineWiseCopyCut) {
	return;
	} else {
	var ranges = copyableRanges(cm);
	lastCopied = ranges.text;
	if (e.type == "cut") {
	cm.operation(function() {
	cm.setSelections(ranges.ranges, 0, sel_dontScroll);
	cm.replaceSelection("", null, "cut");
	});
	}
	}
	// iOS exposes the clipboard API, but seems to discard content inserted into it
	if (e.clipboardData && !ios) {
	e.preventDefault();
	e.clipboardData.clearData();
	e.clipboardData.setData("text/plain", lastCopied.join("\n"));
	} else {
	// Old-fashioned briefly-focus-a-textarea hack
	var kludge = hiddenTextarea(), te = kludge.firstChild;
	cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
	te.value = lastCopied.join("\n");
	var hadFocus = document.activeElement;
	selectInput(te);
	setTimeout(function() {
	cm.display.lineSpace.removeChild(kludge);
	hadFocus.focus();
	}, 50);
	}
	}
	on(div, "copy", onCopyCut);
	on(div, "cut", onCopyCut);
	},

	prepareSelection: function() {
	var result = prepareSelection(this.cm, false);
	result.focus = this.cm.state.focused;
	return result;
	},

	showSelection: function(info) {
	if (!info \|\| !this.cm.display.view.length) return;
	if (info.focus) this.showPrimarySelection();
	this.showMultipleSelections(info);
	},

	showPrimarySelection: function() {
	var sel = window.getSelection(), prim = this.cm.doc.sel.primary();
	var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset);
	var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset);
	if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
	cmp(minPos(curAnchor, curFocus), prim.from()) == 0 &&
	cmp(maxPos(curAnchor, curFocus), prim.to()) == 0)
	return;

	var start = posToDOM(this.cm, prim.from());
	var end = posToDOM(this.cm, prim.to());
	if (!start && !end) return;

	var view = this.cm.display.view;
	var old = sel.rangeCount && sel.getRangeAt(0);
	if (!start) {
	start = {node: view[0].measure.map[2], offset: 0};
	} else if (!end) { // FIXME dangerously hacky
	var measure = view[view.length - 1].measure;
	var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
	end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};
	}

	try { var rng = range(start.node, start.offset, end.offset, end.node); }
	catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
	if (rng) {
	sel.removeAllRanges();
	sel.addRange(rng);
	if (old && sel.anchorNode == null) sel.addRange(old);
	else if (gecko) this.startGracePeriod();
	}
	this.rememberSelection();
	},

	startGracePeriod: function() {
	var input = this;
	clearTimeout(this.gracePeriod);
	this.gracePeriod = setTimeout(function() {
	input.gracePeriod = false;
	if (input.selectionChanged())
	input.cm.operation(function() { input.cm.curOp.selectionChanged = true; });
	}, 20);
	},

	showMultipleSelections: function(info) {
	removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);
	removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);
	},

	rememberSelection: function() {
	var sel = window.getSelection();
	this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;
	this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;
	},

	selectionInEditor: function() {
	var sel = window.getSelection();
	if (!sel.rangeCount) return false;
	var node = sel.getRangeAt(0).commonAncestorContainer;
	return contains(this.div, node);
	},

	focus: function() {
	if (this.cm.options.readOnly != "nocursor") this.div.focus();
	},
	blur: function() { this.div.blur(); },
	getField: function() { return this.div; },

	supportsTouch: function() { return true; },

	receivedFocus: function() {
	var input = this;
	if (this.selectionInEditor())
	this.pollSelection();
	else
	runInOp(this.cm, function() { input.cm.curOp.selectionChanged = true; });

	function poll() {
	if (input.cm.state.focused) {
	input.pollSelection();
	input.polling.set(input.cm.options.pollInterval, poll);
	}
	}
	this.polling.set(this.cm.options.pollInterval, poll);
	},

	selectionChanged: function() {
	var sel = window.getSelection();
	return sel.anchorNode != this.lastAnchorNode \|\| sel.anchorOffset != this.lastAnchorOffset \|\|
	sel.focusNode != this.lastFocusNode \|\| sel.focusOffset != this.lastFocusOffset;
	},

	pollSelection: function() {
	if (!this.composing && !this.gracePeriod && this.selectionChanged()) {
	var sel = window.getSelection(), cm = this.cm;
	this.rememberSelection();
	var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
	var head = domToPos(cm, sel.focusNode, sel.focusOffset);
	if (anchor && head) runInOp(cm, function() {
	setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);
	if (anchor.bad \|\| head.bad) cm.curOp.selectionChanged = true;
	});
	}
	},

	pollContent: function() {
	var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();
	var from = sel.from(), to = sel.to();
	if (from.line < display.viewFrom \|\| to.line > display.viewTo - 1) return false;

	var fromIndex;
	if (from.line == display.viewFrom \|\| (fromIndex = findViewIndex(cm, from.line)) == 0) {
	var fromLine = lineNo(display.view[0].line);
	var fromNode = display.view[0].node;
	} else {
	var fromLine = lineNo(display.view[fromIndex].line);
	var fromNode = display.view[fromIndex - 1].node.nextSibling;
	}
	var toIndex = findViewIndex(cm, to.line);
	if (toIndex == display.view.length - 1) {
	var toLine = display.viewTo - 1;
	var toNode = display.lineDiv.lastChild;
	} else {
	var toLine = lineNo(display.view[toIndex + 1].line) - 1;
	var toNode = display.view[toIndex + 1].node.previousSibling;
	}

	var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));
	var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));
	while (newText.length > 1 && oldText.length > 1) {
	if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }
	else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }
	else break;
	}

	var cutFront = 0, cutEnd = 0;
	var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);
	while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))
	++cutFront;
	var newBot = lst(newText), oldBot = lst(oldText);
	var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
	oldBot.length - (oldText.length == 1 ? cutFront : 0));
	while (cutEnd < maxCutEnd &&
	newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))
	++cutEnd;

	newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd);
	newText[0] = newText[0].slice(cutFront);

	var chFrom = Pos(fromLine, cutFront);
	var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);
	if (newText.length > 1 \|\| newText[0] \|\| cmp(chFrom, chTo)) {
	replaceRange(cm.doc, newText, chFrom, chTo, "+input");
	return true;
	}
	},

	ensurePolled: function() {
	this.forceCompositionEnd();
	},
	reset: function() {
	this.forceCompositionEnd();
	},
	forceCompositionEnd: function() {
	if (!this.composing \|\| this.composing.handled) return;
	this.applyComposition(this.composing);
	this.composing.handled = true;
	this.div.blur();
	this.div.focus();
	},
	applyComposition: function(composing) {
	if (isReadOnly(this.cm))
	operation(this.cm, regChange)(this.cm)
	else if (composing.data && composing.data != composing.startData)
	operation(this.cm, applyTextInput)(this.cm, composing.data, 0, composing.sel);
	},

	setUneditable: function(node) {
	node.contentEditable = "false"
	},

	onKeyPress: function(e) {
	e.preventDefault();
	if (!isReadOnly(this.cm))
	operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0);
	},

	readOnlyChanged: function(val) {
	this.div.contentEditable = String(val != "nocursor")
	},

	onContextMenu: nothing,
	resetPosition: nothing,

	needsContentAttribute: true
	}, ContentEditableInput.prototype);

	function posToDOM(cm, pos) {
	var view = findViewForLine(cm, pos.line);
	if (!view \|\| view.hidden) return null;
	var line = getLine(cm.doc, pos.line);
	var info = mapFromLineView(view, line, pos.line);

	var order = getOrder(line), side = "left";
	if (order) {
	var partPos = getBidiPartAt(order, pos.ch);
	side = partPos % 2 ? "right" : "left";
	}
	var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);
	result.offset = result.collapse == "right" ? result.end : result.start;
	return result;
	}

	function badPos(pos, bad) { if (bad) pos.bad = true; return pos; }

	function domToPos(cm, node, offset) {
	var lineNode;
	if (node == cm.display.lineDiv) {
	lineNode = cm.display.lineDiv.childNodes[offset];
	if (!lineNode) return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true);
	node = null; offset = 0;
	} else {
	for (lineNode = node;; lineNode = lineNode.parentNode) {
	if (!lineNode \|\| lineNode == cm.display.lineDiv) return null;
	if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) break;
	}
	}
	for (var i = 0; i < cm.display.view.length; i++) {
	var lineView = cm.display.view[i];
	if (lineView.node == lineNode)
	return locateNodeInLineView(lineView, node, offset);
	}
	}

	function locateNodeInLineView(lineView, node, offset) {
	var wrapper = lineView.text.firstChild, bad = false;
	if (!node \|\| !contains(wrapper, node)) return badPos(Pos(lineNo(lineView.line), 0), true);
	if (node == wrapper) {
	bad = true;
	node = wrapper.childNodes[offset];
	offset = 0;
	if (!node) {
	var line = lineView.rest ? lst(lineView.rest) : lineView.line;
	return badPos(Pos(lineNo(line), line.text.length), bad);
	}
	}

	var textNode = node.nodeType == 3 ? node : null, topNode = node;
	if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
	textNode = node.firstChild;
	if (offset) offset = textNode.nodeValue.length;
	}
	while (topNode.parentNode != wrapper) topNode = topNode.parentNode;
	var measure = lineView.measure, maps = measure.maps;

	function find(textNode, topNode, offset) {
	for (var i = -1; i < (maps ? maps.length : 0); i++) {
	var map = i < 0 ? measure.map : maps[i];
	for (var j = 0; j < map.length; j += 3) {
	var curNode = map[j + 2];
	if (curNode == textNode \|\| curNode == topNode) {
	var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
	var ch = map[j] + offset;
	if (offset < 0 \|\| curNode != textNode) ch = map[j + (offset ? 1 : 0)];
	return Pos(line, ch);
	}
	}
	}
	}
	var found = find(textNode, topNode, offset);
	if (found) return badPos(found, bad);

	// FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
	for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
	found = find(after, after.firstChild, 0);
	if (found)
	return badPos(Pos(found.line, found.ch - dist), bad);
	else
	dist += after.textContent.length;
	}
	for (var before = topNode.previousSibling, dist = offset; before; before = before.previousSibling) {
	found = find(before, before.firstChild, -1);
	if (found)
	return badPos(Pos(found.line, found.ch + dist), bad);
	else
	dist += after.textContent.length;
	}
	}

	function domTextBetween(cm, from, to, fromLine, toLine) {
	var text = "", closing = false, lineSep = cm.doc.lineSeparator();
	function recognizeMarker(id) { return function(marker) { return marker.id == id; }; }
	function walk(node) {
	if (node.nodeType == 1) {
	var cmText = node.getAttribute("cm-text");
	if (cmText != null) {
	if (cmText == "") cmText = node.textContent.replace(/\u200b/g, "");
	text += cmText;
	return;
	}
	var markerID = node.getAttribute("cm-marker"), range;
	if (markerID) {
	var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
	if (found.length && (range = found[0].find()))
	text += getBetween(cm.doc, range.from, range.to).join(lineSep);
	return;
	}
	if (node.getAttribute("contenteditable") == "false") return;
	for (var i = 0; i < node.childNodes.length; i++)
	walk(node.childNodes[i]);
	if (/^(pre\|div\|p)$/i.test(node.nodeName))
	closing = true;
	} else if (node.nodeType == 3) {
	var val = node.nodeValue;
	if (!val) return;
	if (closing) {
	text += lineSep;
	closing = false;
	}
	text += val;
	}
	}
	for (;;) {
	walk(from);
	if (from == to) break;
	from = from.nextSibling;
	}
	return text;
	}

	CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput};

	// SELECTION / CURSOR

	// Selection objects are immutable. A new one is created every time
	// the selection changes. A selection is one or more non-overlapping
	// (and non-touching) ranges, sorted, and an integer that indicates
	// which one is the primary selection (the one that's scrolled into
	// view, that getCursor returns, etc).
	function Selection(ranges, primIndex) {
	this.ranges = ranges;
	this.primIndex = primIndex;
	}

	Selection.prototype = {
	primary: function() { return this.ranges[this.primIndex]; },
	equals: function(other) {
	if (other == this) return true;
	if (other.primIndex != this.primIndex \|\| other.ranges.length != this.ranges.length) return false;
	for (var i = 0; i < this.ranges.length; i++) {
	var here = this.ranges[i], there = other.ranges[i];
	if (cmp(here.anchor, there.anchor) != 0 \|\| cmp(here.head, there.head) != 0) return false;
	}
	return true;
	},
	deepCopy: function() {
	for (var out = [], i = 0; i < this.ranges.length; i++)
	out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));
	return new Selection(out, this.primIndex);
	},
	somethingSelected: function() {
	for (var i = 0; i < this.ranges.length; i++)
	if (!this.ranges[i].empty()) return true;
	return false;
	},
	contains: function(pos, end) {
	if (!end) end = pos;
	for (var i = 0; i < this.ranges.length; i++) {
	var range = this.ranges[i];
	if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
	return i;
	}
	return -1;
	}
	};

	function Range(anchor, head) {
	this.anchor = anchor; this.head = head;
	}

	Range.prototype = {
	from: function() { return minPos(this.anchor, this.head); },
	to: function() { return maxPos(this.anchor, this.head); },
	empty: function() {
	return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;
	}
	};

	// Take an unsorted, potentially overlapping set of ranges, and
	// build a selection out of it. 'Consumes' ranges array (modifying
	// it).
	function normalizeSelection(ranges, primIndex) {
	var prim = ranges[primIndex];
	ranges.sort(function(a, b) { return cmp(a.from(), b.from()); });
	primIndex = indexOf(ranges, prim);
	for (var i = 1; i < ranges.length; i++) {
	var cur = ranges[i], prev = ranges[i - 1];
	if (cmp(prev.to(), cur.from()) >= 0) {
	var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
	var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
	if (i <= primIndex) --primIndex;
	ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
	}
	}
	return new Selection(ranges, primIndex);
	}

	function simpleSelection(anchor, head) {
	return new Selection([new Range(anchor, head \|\| anchor)], 0);
	}

	// Most of the external API clips given positions to make sure they
	// actually exist within the document.
	function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
	function clipPos(doc, pos) {
	if (pos.line < doc.first) return Pos(doc.first, 0);
	var last = doc.first + doc.size - 1;
	if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
	return clipToLen(pos, getLine(doc, pos.line).text.length);
	}
	function clipToLen(pos, linelen) {
	var ch = pos.ch;
	if (ch == null \|\| ch > linelen) return Pos(pos.line, linelen);
	else if (ch < 0) return Pos(pos.line, 0);
	else return pos;
	}
	function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
	function clipPosArray(doc, array) {
	for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]);
	return out;
	}

	// SELECTION UPDATES

	// The 'scroll' parameter given to many of these indicated whether
	// the new cursor position should be scrolled into view after
	// modifying the selection.

	// If shift is held or the extend flag is set, extends a range to
	// include a given position (and optionally a second position).
	// Otherwise, simply returns the range between the given positions.
	// Used for cursor motion and such.
	function extendRange(doc, range, head, other) {
	if (doc.cm && doc.cm.display.shift \|\| doc.extend) {
	var anchor = range.anchor;
	if (other) {
	var posBefore = cmp(head, anchor) < 0;
	if (posBefore != (cmp(other, anchor) < 0)) {
	anchor = head;
	head = other;
	} else if (posBefore != (cmp(head, other) < 0)) {
	head = other;
	}
	}
	return new Range(anchor, head);
	} else {
	return new Range(other \|\| head, head);
	}
	}

	// Extend the primary selection range, discard the rest.
	function extendSelection(doc, head, other, options) {
	setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);
	}

	// Extend all selections (pos is an array of selections with length
	// equal the number of selections)
	function extendSelections(doc, heads, options) {
	for (var out = [], i = 0; i < doc.sel.ranges.length; i++)
	out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);
	var newSel = normalizeSelection(out, doc.sel.primIndex);
	setSelection(doc, newSel, options);
	}

	// Updates a single range in the selection.
	function replaceOneSelection(doc, i, range, options) {
	var ranges = doc.sel.ranges.slice(0);
	ranges[i] = range;
	setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);
	}

	// Reset the selection to a single range.
	function setSimpleSelection(doc, anchor, head, options) {
	setSelection(doc, simpleSelection(anchor, head), options);
	}

	// Give beforeSelectionChange handlers a change to influence a
	// selection update.
	function filterSelectionChange(doc, sel) {
	var obj = {
	ranges: sel.ranges,
	update: function(ranges) {
	this.ranges = [];
	for (var i = 0; i < ranges.length; i++)
	this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
	clipPos(doc, ranges[i].head));
	}
	};
	signal(doc, "beforeSelectionChange", doc, obj);
	if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
	if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1);
	else return sel;
	}

	function setSelectionReplaceHistory(doc, sel, options) {
	var done = doc.history.done, last = lst(done);
	if (last && last.ranges) {
	done[done.length - 1] = sel;
	setSelectionNoUndo(doc, sel, options);
	} else {
	setSelection(doc, sel, options);
	}
	}

	// Set a new selection.
	function setSelection(doc, sel, options) {
	setSelectionNoUndo(doc, sel, options);
	addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
	}

	function setSelectionNoUndo(doc, sel, options) {
	if (hasHandler(doc, "beforeSelectionChange") \|\| doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
	sel = filterSelectionChange(doc, sel);

	var bias = options && options.bias \|\|
	(cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
	setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));

	if (!(options && options.scroll === false) && doc.cm)
	ensureCursorVisible(doc.cm);
	}

	function setSelectionInner(doc, sel) {
	if (sel.equals(doc.sel)) return;

	doc.sel = sel;

	if (doc.cm) {
	doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true;
	signalCursorActivity(doc.cm);
	}
	signalLater(doc, "cursorActivity", doc);
	}

	// Verify that the selection does not partially select any atomic
	// marked ranges.
	function reCheckSelection(doc) {
	setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll);
	}

	// Return a selection that does not partially select any atomic
	// ranges.
	function skipAtomicInSelection(doc, sel, bias, mayClear) {
	var out;
	for (var i = 0; i < sel.ranges.length; i++) {
	var range = sel.ranges[i];
	var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i];
	var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear);
	var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear);
	if (out \|\| newAnchor != range.anchor \|\| newHead != range.head) {
	if (!out) out = sel.ranges.slice(0, i);
	out[i] = new Range(newAnchor, newHead);
	}
	}
	return out ? normalizeSelection(out, sel.primIndex) : sel;
	}

	function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {
	var line = getLine(doc, pos.line);
	if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
	var sp = line.markedSpans[i], m = sp.marker;
	if ((sp.from == null \|\| (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&
	(sp.to == null \|\| (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) {
	if (mayClear) {
	signal(m, "beforeCursorEnter");
	if (m.explicitlyCleared) {
	if (!line.markedSpans) break;
	else {--i; continue;}
	}
	}
	if (!m.atomic) continue;

	if (oldPos) {
	var near = m.find(dir < 0 ? 1 : -1), diff;
	if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft) near = movePos(doc, near, -dir, line);
	if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))
	return skipAtomicInner(doc, near, pos, dir, mayClear);
	}

	var far = m.find(dir < 0 ? -1 : 1);
	if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight) far = movePos(doc, far, dir, line);
	return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null;
	}
	}
	return pos;
	}

	// Ensure a given position is not inside an atomic range.
	function skipAtomic(doc, pos, oldPos, bias, mayClear) {
	var dir = bias \|\| 1;
	var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) \|\|
	(!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) \|\|
	skipAtomicInner(doc, pos, oldPos, -dir, mayClear) \|\|
	(!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true));
	if (!found) {
	doc.cantEdit = true;
	return Pos(doc.first, 0);
	}
	return found;
	}

	function movePos(doc, pos, dir, line) {
	if (dir < 0 && pos.ch == 0) {
	if (pos.line > doc.first) return clipPos(doc, Pos(pos.line - 1));
	else return null;
	} else if (dir > 0 && pos.ch == (line \|\| getLine(doc, pos.line)).text.length) {
	if (pos.line < doc.first + doc.size - 1) return Pos(pos.line + 1, 0);
	else return null;
	} else {
	return new Pos(pos.line, pos.ch + dir);
	}
	}

	// SELECTION DRAWING

	function updateSelection(cm) {
	cm.display.input.showSelection(cm.display.input.prepareSelection());
	}

	function prepareSelection(cm, primary) {
	var doc = cm.doc, result = {};
	var curFragment = result.cursors = document.createDocumentFragment();
	var selFragment = result.selection = document.createDocumentFragment();

	for (var i = 0; i < doc.sel.ranges.length; i++) {
	if (primary === false && i == doc.sel.primIndex) continue;
	var range = doc.sel.ranges[i];
	var collapsed = range.empty();
	if (collapsed \|\| cm.options.showCursorWhenSelecting)
	drawSelectionCursor(cm, range.head, curFragment);
	if (!collapsed)
	drawSelectionRange(cm, range, selFragment);
	}
	return result;
	}

	// Draws a cursor for the given range
	function drawSelectionCursor(cm, head, output) {
	var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine);

	var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
	cursor.style.left = pos.left + "px";
	cursor.style.top = pos.top + "px";
	cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";

	if (pos.other) {
	// Secondary cursor, shown when on a 'jump' in bi-directional text
	var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
	otherCursor.style.display = "";
	otherCursor.style.left = pos.other.left + "px";
	otherCursor.style.top = pos.other.top + "px";
	otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
	}
	}

	// Draws the given range as a highlighted selection
	function drawSelectionRange(cm, range, output) {
	var display = cm.display, doc = cm.doc;
	var fragment = document.createDocumentFragment();
	var padding = paddingH(cm.display), leftSide = padding.left;
	var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;

	function add(left, top, width, bottom) {
	if (top < 0) top = 0;
	top = Math.round(top);
	bottom = Math.round(bottom);
	fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
	"px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) +
	"px; height: " + (bottom - top) + "px"));
	}

	function drawForLine(line, fromArg, toArg) {
	var lineObj = getLine(doc, line);
	var lineLen = lineObj.text.length;
	var start, end;
	function coords(ch, bias) {
	return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
	}

	iterateBidiSections(getOrder(lineObj), fromArg \|\| 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
	var leftPos = coords(from, "left"), rightPos, left, right;
	if (from == to) {
	rightPos = leftPos;
	left = right = leftPos.left;
	} else {
	rightPos = coords(to - 1, "right");
	if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
	left = leftPos.left;
	right = rightPos.right;
	}
	if (fromArg == null && from == 0) left = leftSide;
	if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
	add(left, leftPos.top, null, leftPos.bottom);
	left = leftSide;
	if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
	}
	if (toArg == null && to == lineLen) right = rightSide;
	if (!start \|\| leftPos.top < start.top \|\| leftPos.top == start.top && leftPos.left < start.left)
	start = leftPos;
	if (!end \|\| rightPos.bottom > end.bottom \|\| rightPos.bottom == end.bottom && rightPos.right > end.right)
	end = rightPos;
	if (left < leftSide + 1) left = leftSide;
	add(left, rightPos.top, right - left, rightPos.bottom);
	});
	return {start: start, end: end};
	}

	var sFrom = range.from(), sTo = range.to();
	if (sFrom.line == sTo.line) {
	drawForLine(sFrom.line, sFrom.ch, sTo.ch);
	} else {
	var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
	var singleVLine = visualLine(fromLine) == visualLine(toLine);
	var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
	var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
	if (singleVLine) {
	if (leftEnd.top < rightStart.top - 2) {
	add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
	add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
	} else {
	add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
	}
	}
	if (leftEnd.bottom < rightStart.top)
	add(leftSide, leftEnd.bottom, null, rightStart.top);
	}

	output.appendChild(fragment);
	}

	// Cursor-blinking
	function restartBlink(cm) {
	if (!cm.state.focused) return;
	var display = cm.display;
	clearInterval(display.blinker);
	var on = true;
	display.cursorDiv.style.visibility = "";
	if (cm.options.cursorBlinkRate > 0)
	display.blinker = setInterval(function() {
	display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
	}, cm.options.cursorBlinkRate);
	else if (cm.options.cursorBlinkRate < 0)
	display.cursorDiv.style.visibility = "hidden";
	}

	// HIGHLIGHT WORKER

	function startWorker(cm, time) {
	if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
	cm.state.highlight.set(time, bind(highlightWorker, cm));
	}

	function highlightWorker(cm) {
	var doc = cm.doc;
	if (doc.frontier < doc.first) doc.frontier = doc.first;
	if (doc.frontier >= cm.display.viewTo) return;
	var end = +new Date + cm.options.workTime;
	var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
	var changedLines = [];

	doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
	if (doc.frontier >= cm.display.viewFrom) { // Visible
	var oldStyles = line.styles, tooLong = line.text.length > cm.options.maxHighlightLength;
	var highlighted = highlightLine(cm, line, tooLong ? copyState(doc.mode, state) : state, true);
	line.styles = highlighted.styles;
	var oldCls = line.styleClasses, newCls = highlighted.classes;
	if (newCls) line.styleClasses = newCls;
	else if (oldCls) line.styleClasses = null;
	var ischange = !oldStyles \|\| oldStyles.length != line.styles.length \|\|
	oldCls != newCls && (!oldCls \|\| !newCls \|\| oldCls.bgClass != newCls.bgClass \|\| oldCls.textClass != newCls.textClass);
	for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
	if (ischange) changedLines.push(doc.frontier);
	line.stateAfter = tooLong ? state : copyState(doc.mode, state);
	} else {
	if (line.text.length <= cm.options.maxHighlightLength)
	processLine(cm, line.text, state);
	line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
	}
	++doc.frontier;
	if (+new Date > end) {
	startWorker(cm, cm.options.workDelay);
	return true;
	}
	});
	if (changedLines.length) runInOp(cm, function() {
	for (var i = 0; i < changedLines.length; i++)
	regLineChange(cm, changedLines[i], "text");
	});
	}

	// Finds the line to start with when starting a parse. Tries to
	// find a line with a stateAfter, so that it can start with a
	// valid state. If that fails, it returns the line with the
	// smallest indentation, which tends to need the least context to
	// parse correctly.
	function findStartLine(cm, n, precise) {
	var minindent, minline, doc = cm.doc;
	var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
	for (var search = n; search > lim; --search) {
	if (search <= doc.first) return doc.first;
	var line = getLine(doc, search - 1);
	if (line.stateAfter && (!precise \|\| search <= doc.frontier)) return search;
	var indented = countColumn(line.text, null, cm.options.tabSize);
	if (minline == null \|\| minindent > indented) {
	minline = search - 1;
	minindent = indented;
	}
	}
	return minline;
	}

	function getStateBefore(cm, n, precise) {
	var doc = cm.doc, display = cm.display;
	if (!doc.mode.startState) return true;
	var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;
	if (!state) state = startState(doc.mode);
	else state = copyState(doc.mode, state);
	doc.iter(pos, n, function(line) {
	processLine(cm, line.text, state);
	var save = pos == n - 1 \|\| pos % 5 == 0 \|\| pos >= display.viewFrom && pos < display.viewTo;
	line.stateAfter = save ? copyState(doc.mode, state) : null;
	++pos;
	});
	if (precise) doc.frontier = pos;
	return state;
	}

	// POSITION MEASUREMENT

	function paddingTop(display) {return display.lineSpace.offsetTop;}
	function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
	function paddingH(display) {
	if (display.cachedPaddingH) return display.cachedPaddingH;
	var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
	var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
	var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
	if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data;
	return data;
	}

	function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth; }
	function displayWidth(cm) {
	return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth;
	}
	function displayHeight(cm) {
	return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight;
	}

	// Ensure the lineView.wrapping.heights array is populated. This is
	// an array of bottom offsets for the lines that make up a drawn
	// line. When lineWrapping is on, there might be more than one
	// height.
	function ensureLineHeights(cm, lineView, rect) {
	var wrapping = cm.options.lineWrapping;
	var curWidth = wrapping && displayWidth(cm);
	if (!lineView.measure.heights \|\| wrapping && lineView.measure.width != curWidth) {
	var heights = lineView.measure.heights = [];
	if (wrapping) {
	lineView.measure.width = curWidth;
	var rects = lineView.text.firstChild.getClientRects();
	for (var i = 0; i < rects.length - 1; i++) {
	var cur = rects[i], next = rects[i + 1];
	if (Math.abs(cur.bottom - next.bottom) > 2)
	heights.push((cur.bottom + next.top) / 2 - rect.top);
	}
	}
	heights.push(rect.bottom - rect.top);
	}
	}

	// Find a line map (mapping character offsets to text nodes) and a
	// measurement cache for the given line number. (A line view might
	// contain multiple lines when collapsed ranges are present.)
	function mapFromLineView(lineView, line, lineN) {
	if (lineView.line == line)
	return {map: lineView.measure.map, cache: lineView.measure.cache};
	for (var i = 0; i < lineView.rest.length; i++)
	if (lineView.rest[i] == line)
	return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]};
	for (var i = 0; i < lineView.rest.length; i++)
	if (lineNo(lineView.rest[i]) > lineN)
	return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true};
	}

	// Render a line into the hidden node display.externalMeasured. Used
	// when measurement is needed for a line that's not in the viewport.
	function updateExternalMeasurement(cm, line) {
	line = visualLine(line);
	var lineN = lineNo(line);
	var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
	view.lineN = lineN;
	var built = view.built = buildLineContent(cm, view);
	view.text = built.pre;
	removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
	return view;
	}

	// Get a {top, bottom, left, right} box (in line-local coordinates)
	// for a given character.
	function measureChar(cm, line, ch, bias) {
	return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias);
	}

	// Find a line view that corresponds to the given line number.
	function findViewForLine(cm, lineN) {
	if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
	return cm.display.view[findViewIndex(cm, lineN)];
	var ext = cm.display.externalMeasured;
	if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
	return ext;
	}

	// Measurement can be split in two steps, the set-up work that
	// applies to the whole line, and the measurement of the actual
	// character. Functions like coordsChar, that need to do a lot of
	// measurements in a row, can thus ensure that the set-up work is
	// only done once.
	function prepareMeasureForLine(cm, line) {
	var lineN = lineNo(line);
	var view = findViewForLine(cm, lineN);
	if (view && !view.text) {
	view = null;
	} else if (view && view.changes) {
	updateLineForChanges(cm, view, lineN, getDimensions(cm));
	cm.curOp.forceUpdate = true;
	}
	if (!view)
	view = updateExternalMeasurement(cm, line);

	var info = mapFromLineView(view, line, lineN);
	return {
	line: line, view: view, rect: null,
	map: info.map, cache: info.cache, before: info.before,
	hasHeights: false
	};
	}

	// Given a prepared measurement object, measures the position of an
	// actual character (or fetches it from the cache).
	function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
	if (prepared.before) ch = -1;
	var key = ch + (bias \|\| ""), found;
	if (prepared.cache.hasOwnProperty(key)) {
	found = prepared.cache[key];
	} else {
	if (!prepared.rect)
	prepared.rect = prepared.view.text.getBoundingClientRect();
	if (!prepared.hasHeights) {
	ensureLineHeights(cm, prepared.view, prepared.rect);
	prepared.hasHeights = true;
	}
	found = measureCharInner(cm, prepared, ch, bias);
	if (!found.bogus) prepared.cache[key] = found;
	}
	return {left: found.left, right: found.right,
	top: varHeight ? found.rtop : found.top,
	bottom: varHeight ? found.rbottom : found.bottom};
	}

	var nullRect = {left: 0, right: 0, top: 0, bottom: 0};

	function nodeAndOffsetInLineMap(map, ch, bias) {
	var node, start, end, collapse;
	// First, search the line map for the text node corresponding to,
	// or closest to, the target character.
	for (var i = 0; i < map.length; i += 3) {
	var mStart = map[i], mEnd = map[i + 1];
	if (ch < mStart) {
	start = 0; end = 1;
	collapse = "left";
	} else if (ch < mEnd) {
	start = ch - mStart;
	end = start + 1;
	} else if (i == map.length - 3 \|\| ch == mEnd && map[i + 3] > ch) {
	end = mEnd - mStart;
	start = end - 1;
	if (ch >= mEnd) collapse = "right";
	}
	if (start != null) {
	node = map[i + 2];
	if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
	collapse = bias;
	if (bias == "left" && start == 0)
	while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
	node = map[(i -= 3) + 2];
	collapse = "left";
	}
	if (bias == "right" && start == mEnd - mStart)
	while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
	node = map[(i += 3) + 2];
	collapse = "right";
	}
	break;
	}
	}
	return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd};
	}

	function measureCharInner(cm, prepared, ch, bias) {
	var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);
	var node = place.node, start = place.start, end = place.end, collapse = place.collapse;

	var rect;
	if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
	for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned
	while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) --start;
	while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) ++end;
	if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) {
	rect = node.parentNode.getBoundingClientRect();
	} else if (ie && cm.options.lineWrapping) {
	var rects = range(node, start, end).getClientRects();
	if (rects.length)
	rect = rects[bias == "right" ? rects.length - 1 : 0];
	else
	rect = nullRect;
	} else {
	rect = range(node, start, end).getBoundingClientRect() \|\| nullRect;
	}
	if (rect.left \|\| rect.right \|\| start == 0) break;
	end = start;
	start = start - 1;
	collapse = "right";
	}
	if (ie && ie_version < 11) rect = maybeUpdateRectForZooming(cm.display.measure, rect);
	} else { // If it is a widget, simply get the box for the whole widget.
	if (start > 0) collapse = bias = "right";
	var rects;
	if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
	rect = rects[bias == "right" ? rects.length - 1 : 0];
	else
	rect = node.getBoundingClientRect();
	}
	if (ie && ie_version < 9 && !start && (!rect \|\| !rect.left && !rect.right)) {
	var rSpan = node.parentNode.getClientRects()[0];
	if (rSpan)
	rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};
	else
	rect = nullRect;
	}

	var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;
	var mid = (rtop + rbot) / 2;
	var heights = prepared.view.measure.heights;
	for (var i = 0; i < heights.length - 1; i++)
	if (mid < heights[i]) break;
	var top = i ? heights[i - 1] : 0, bot = heights[i];
	var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
	right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
	top: top, bottom: bot};
	if (!rect.left && !rect.right) result.bogus = true;
	if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }

	return result;
	}

	// Work around problem with bounding client rects on ranges being
	// returned incorrectly when zoomed on IE10 and below.
	function maybeUpdateRectForZooming(measure, rect) {
	if (!window.screen \|\| screen.logicalXDPI == null \|\|
	screen.logicalXDPI == screen.deviceXDPI \|\| !hasBadZoomedRects(measure))
	return rect;
	var scaleX = screen.logicalXDPI / screen.deviceXDPI;
	var scaleY = screen.logicalYDPI / screen.deviceYDPI;
	return {left: rect.left * scaleX, right: rect.right * scaleX,
	top: rect.top * scaleY, bottom: rect.bottom * scaleY};
	}

	function clearLineMeasurementCacheFor(lineView) {
	if (lineView.measure) {
	lineView.measure.cache = {};
	lineView.measure.heights = null;
	if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
	lineView.measure.caches[i] = {};
	}
	}

	function clearLineMeasurementCache(cm) {
	cm.display.externalMeasure = null;
	removeChildren(cm.display.lineMeasure);
	for (var i = 0; i < cm.display.view.length; i++)
	clearLineMeasurementCacheFor(cm.display.view[i]);
	}

	function clearCaches(cm) {
	clearLineMeasurementCache(cm);
	cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
	if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
	cm.display.lineNumChars = null;
	}

	function pageScrollX() { return window.pageXOffset \|\| (document.documentElement \|\| document.body).scrollLeft; }
	function pageScrollY() { return window.pageYOffset \|\| (document.documentElement \|\| document.body).scrollTop; }

	// Converts a {top, bottom, left, right} box from line-local
	// coordinates into another coordinate system. Context may be one of
	// "line", "div" (display.lineDiv), "local"/null (editor), "window",
	// or "page".
	function intoCoordSystem(cm, lineObj, rect, context) {
	if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
	var size = widgetHeight(lineObj.widgets[i]);
	rect.top += size; rect.bottom += size;
	}
	if (context == "line") return rect;
	if (!context) context = "local";
	var yOff = heightAtLine(lineObj);
	if (context == "local") yOff += paddingTop(cm.display);
	else yOff -= cm.display.viewOffset;
	if (context == "page" \|\| context == "window") {
	var lOff = cm.display.lineSpace.getBoundingClientRect();
	yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
	var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
	rect.left += xOff; rect.right += xOff;
	}
	rect.top += yOff; rect.bottom += yOff;
	return rect;
	}

	// Coverts a box from "div" coords to another coordinate system.
	// Context may be "window", "page", "div", or "local"/null.
	function fromCoordSystem(cm, coords, context) {
	if (context == "div") return coords;
	var left = coords.left, top = coords.top;
	// First move into "page" coordinate system
	if (context == "page") {
	left -= pageScrollX();
	top -= pageScrollY();
	} else if (context == "local" \|\| !context) {
	var localBox = cm.display.sizer.getBoundingClientRect();
	left += localBox.left;
	top += localBox.top;
	}

	var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
	return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
	}

	function charCoords(cm, pos, context, lineObj, bias) {
	if (!lineObj) lineObj = getLine(cm.doc, pos.line);
	return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);
	}

	// Returns a box for a given cursor position, which may have an
	// 'other' property containing the position of the secondary cursor
	// on a bidi boundary.
	function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
	lineObj = lineObj \|\| getLine(cm.doc, pos.line);
	if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj);
	function get(ch, right) {
	var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight);
	if (right) m.left = m.right; else m.right = m.left;
	return intoCoordSystem(cm, lineObj, m, context);
	}
	function getBidi(ch, partPos) {
	var part = order[partPos], right = part.level % 2;
	if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
	part = order[--partPos];
	ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
	right = true;
	} else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
	part = order[++partPos];
	ch = bidiLeft(part) - part.level % 2;
	right = false;
	}
	if (right && ch == part.to && ch > part.from) return get(ch - 1);
	return get(ch, right);
	}
	var order = getOrder(lineObj), ch = pos.ch;
	if (!order) return get(ch);
	var partPos = getBidiPartAt(order, ch);
	var val = getBidi(ch, partPos);
	if (bidiOther != null) val.other = getBidi(ch, bidiOther);
	return val;
	}

	// Used to cheaply estimate the coordinates for a position. Used for
	// intermediate scroll updates.
	function estimateCoords(cm, pos) {
	var left = 0, pos = clipPos(cm.doc, pos);
	if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch;
	var lineObj = getLine(cm.doc, pos.line);
	var top = heightAtLine(lineObj) + paddingTop(cm.display);
	return {left: left, right: left, top: top, bottom: top + lineObj.height};
	}

	// Positions returned by coordsChar contain some extra information.
	// xRel is the relative x position of the input coordinates compared
	// to the found position (so xRel > 0 means the coordinates are to
	// the right of the character position, for example). When outside
	// is true, that means the coordinates lie outside the line's
	// vertical range.
	function PosWithInfo(line, ch, outside, xRel) {
	var pos = Pos(line, ch);
	pos.xRel = xRel;
	if (outside) pos.outside = true;
	return pos;
	}

	// Compute the character position closest to the given coordinates.
	// Input must be lineSpace-local ("div" coordinate system).
	function coordsChar(cm, x, y) {
	var doc = cm.doc;
	y += cm.display.viewOffset;
	if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
	var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
	if (lineN > last)
	return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
	if (x < 0) x = 0;

	var lineObj = getLine(doc, lineN);
	for (;;) {
	var found = coordsCharInner(cm, lineObj, lineN, x, y);
	var merged = collapsedSpanAtEnd(lineObj);
	var mergedPos = merged && merged.find(0, true);
	if (merged && (found.ch > mergedPos.from.ch \|\| found.ch == mergedPos.from.ch && found.xRel > 0))
	lineN = lineNo(lineObj = mergedPos.to.line);
	else
	return found;
	}
	}

	function coordsCharInner(cm, lineObj, lineNo, x, y) {
	var innerOff = y - heightAtLine(lineObj);
	var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
	var preparedMeasure = prepareMeasureForLine(cm, lineObj);

	function getX(ch) {
	var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure);
	wrongLine = true;
	if (innerOff > sp.bottom) return sp.left - adjust;
	else if (innerOff < sp.top) return sp.left + adjust;
	else wrongLine = false;
	return sp.left;
	}

	var bidi = getOrder(lineObj), dist = lineObj.text.length;
	var from = lineLeft(lineObj), to = lineRight(lineObj);
	var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;

	if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
	// Do a binary search between these bounds.
	for (;;) {
	if (bidi ? to == from \|\| to == moveVisually(lineObj, from, 1) : to - from <= 1) {
	var ch = x < fromX \|\| x - fromX <= toX - x ? from : to;
	var xDiff = x - (ch == from ? fromX : toX);
	while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;
	var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
	xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);
	return pos;
	}
	var step = Math.ceil(dist / 2), middle = from + step;
	if (bidi) {
	middle = from;
	for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
	}
	var middleX = getX(middle);
	if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
	else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
	}
	}

	var measureText;
	// Compute the default text height.
	function textHeight(display) {
	if (display.cachedTextHeight != null) return display.cachedTextHeight;
	if (measureText == null) {
	measureText = elt("pre");
	// Measure a bunch of lines, for browsers that compute
	// fractional heights.
	for (var i = 0; i < 49; ++i) {
	measureText.appendChild(document.createTextNode("x"));
	measureText.appendChild(elt("br"));
	}
	measureText.appendChild(document.createTextNode("x"));
	}
	removeChildrenAndAdd(display.measure, measureText);
	var height = measureText.offsetHeight / 50;
	if (height > 3) display.cachedTextHeight = height;
	removeChildren(display.measure);
	return height \|\| 1;
	}

	// Compute the default character width.
	function charWidth(display) {
	if (display.cachedCharWidth != null) return display.cachedCharWidth;
	var anchor = elt("span", "xxxxxxxxxx");
	var pre = elt("pre", [anchor]);
	removeChildrenAndAdd(display.measure, pre);
	var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
	if (width > 2) display.cachedCharWidth = width;
	return width \|\| 10;
	}

	// OPERATIONS

	// Operations are used to wrap a series of changes to the editor
	// state in such a way that each change won't have to update the
	// cursor and display (which would be awkward, slow, and
	// error-prone). Instead, display updates are batched and then all
	// combined and executed at once.

	var operationGroup = null;

	var nextOpId = 0;
	// Start a new operation.
	function startOperation(cm) {
	cm.curOp = {
	cm: cm,
	viewChanged: false, // Flag that indicates that lines might need to be redrawn
	startHeight: cm.doc.height, // Used to detect need to update scrollbar
	forceUpdate: false, // Used to force a redraw
	updateInput: null, // Whether to reset the input textarea
	typing: false, // Whether this reset should be careful to leave existing text (for compositing)
	changeObjs: null, // Accumulated changes, for firing change events
	cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
	cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
	selectionChanged: false, // Whether the selection needs to be redrawn
	updateMaxLine: false, // Set when the widest line needs to be determined anew
	scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
	scrollToPos: null, // Used to scroll to a specific position
	focus: false,
	id: ++nextOpId // Unique ID
	};
	if (operationGroup) {
	operationGroup.ops.push(cm.curOp);
	} else {
	cm.curOp.ownsGroup = operationGroup = {
	ops: [cm.curOp],
	delayedCallbacks: []
	};
	}
	}

	function fireCallbacksForOps(group) {
	// Calls delayed callbacks and cursorActivity handlers until no
	// new ones appear
	var callbacks = group.delayedCallbacks, i = 0;
	do {
	for (; i < callbacks.length; i++)
	callbacks[i].call(null);
	for (var j = 0; j < group.ops.length; j++) {
	var op = group.ops[j];
	if (op.cursorActivityHandlers)
	while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
	op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm);
	}
	} while (i < callbacks.length);
	}

	// Finish an operation, updating the display and signalling delayed events
	function endOperation(cm) {
	var op = cm.curOp, group = op.ownsGroup;
	if (!group) return;

	try { fireCallbacksForOps(group); }
	finally {
	operationGroup = null;
	for (var i = 0; i < group.ops.length; i++)
	group.ops[i].cm.curOp = null;
	endOperations(group);
	}
	}

	// The DOM updates done when an operation finishes are batched so
	// that the minimum number of relayouts are required.
	function endOperations(group) {
	var ops = group.ops;
	for (var i = 0; i < ops.length; i++) // Read DOM
	endOperation_R1(ops[i]);
	for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
	endOperation_W1(ops[i]);
	for (var i = 0; i < ops.length; i++) // Read DOM
	endOperation_R2(ops[i]);
	for (var i = 0; i < ops.length; i++) // Write DOM (maybe)
	endOperation_W2(ops[i]);
	for (var i = 0; i < ops.length; i++) // Read DOM
	endOperation_finish(ops[i]);
	}

	function endOperation_R1(op) {
	var cm = op.cm, display = cm.display;
	maybeClipScrollbars(cm);
	if (op.updateMaxLine) findMaxLine(cm);

	op.mustUpdate = op.viewChanged \|\| op.forceUpdate \|\| op.scrollTop != null \|\|
	op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom \|\|
	op.scrollToPos.to.line >= display.viewTo) \|\|
	display.maxLineChanged && cm.options.lineWrapping;
	op.update = op.mustUpdate &&
	new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
	}

	function endOperation_W1(op) {
	op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);
	}

	function endOperation_R2(op) {
	var cm = op.cm, display = cm.display;
	if (op.updatedDisplay) updateHeightsInViewport(cm);

	op.barMeasure = measureForScrollbars(cm);

	// If the max line changed since it was last measured, measure it,
	// and ensure the document's width matches it.
	// updateDisplay_W2 will use these properties to do the actual resizing
	if (display.maxLineChanged && !cm.options.lineWrapping) {
	op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;
	cm.display.sizerWidth = op.adjustWidthTo;
	op.barMeasure.scrollWidth =
	Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);
	op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));
	}

	if (op.updatedDisplay \|\| op.selectionChanged)
	op.preparedSelection = display.input.prepareSelection();
	}

	function endOperation_W2(op) {
	var cm = op.cm;

	if (op.adjustWidthTo != null) {
	cm.display.sizer.style.minWidth = op.adjustWidthTo + "px";
	if (op.maxScrollLeft < cm.doc.scrollLeft)
	setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true);
	cm.display.maxLineChanged = false;
	}

	if (op.preparedSelection)
	cm.display.input.showSelection(op.preparedSelection);
	if (op.updatedDisplay)
	setDocumentHeight(cm, op.barMeasure);
	if (op.updatedDisplay \|\| op.startHeight != cm.doc.height)
	updateScrollbars(cm, op.barMeasure);

	if (op.selectionChanged) restartBlink(cm);

	if (cm.state.focused && op.updateInput)
	cm.display.input.reset(op.typing);
	if (op.focus && op.focus == activeElt() && (!document.hasFocus \|\| document.hasFocus()))
	ensureFocus(op.cm);
	}

	function endOperation_finish(op) {
	var cm = op.cm, display = cm.display, doc = cm.doc;

	if (op.updatedDisplay) postUpdateDisplay(cm, op.update);

	// Abort mouse wheel delta measurement, when scrolling explicitly
	if (display.wheelStartX != null && (op.scrollTop != null \|\| op.scrollLeft != null \|\| op.scrollToPos))
	display.wheelStartX = display.wheelStartY = null;

	// Propagate the scroll position to the actual DOM scroller
	if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop \|\| op.forceScroll)) {
	doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop));
	display.scrollbars.setScrollTop(doc.scrollTop);
	display.scroller.scrollTop = doc.scrollTop;
	}
	if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft \|\| op.forceScroll)) {
	doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - displayWidth(cm), op.scrollLeft));
	display.scrollbars.setScrollLeft(doc.scrollLeft);
	display.scroller.scrollLeft = doc.scrollLeft;
	alignHorizontally(cm);
	}
	// If we need to scroll a specific position into view, do so.
	if (op.scrollToPos) {
	var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
	clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);
	if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
	}

	// Fire events for markers that are hidden/unidden by editing or
	// undoing
	var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
	if (hidden) for (var i = 0; i < hidden.length; ++i)
	if (!hidden[i].lines.length) signal(hidden[i], "hide");
	if (unhidden) for (var i = 0; i < unhidden.length; ++i)
	if (unhidden[i].lines.length) signal(unhidden[i], "unhide");

	if (display.wrapper.offsetHeight)
	doc.scrollTop = cm.display.scroller.scrollTop;

	// Fire change events, and delayed event handlers
	if (op.changeObjs)
	signal(cm, "changes", cm, op.changeObjs);
	if (op.update)
	op.update.finish();
	}

	// Run the given function in an operation
	function runInOp(cm, f) {
	if (cm.curOp) return f();
	startOperation(cm);
	try { return f(); }
	finally { endOperation(cm); }
	}
	// Wraps a function in an operation. Returns the wrapped function.
	function operation(cm, f) {
	return function() {
	if (cm.curOp) return f.apply(cm, arguments);
	startOperation(cm);
	try { return f.apply(cm, arguments); }
	finally { endOperation(cm); }
	};
	}
	// Used to add methods to editor and doc instances, wrapping them in
	// operations.
	function methodOp(f) {
	return function() {
	if (this.curOp) return f.apply(this, arguments);
	startOperation(this);
	try { return f.apply(this, arguments); }
	finally { endOperation(this); }
	};
	}
	function docMethodOp(f) {
	return function() {
	var cm = this.cm;
	if (!cm \|\| cm.curOp) return f.apply(this, arguments);
	startOperation(cm);
	try { return f.apply(this, arguments); }
	finally { endOperation(cm); }
	};
	}

	// VIEW TRACKING

	// These objects are used to represent the visible (currently drawn)
	// part of the document. A LineView may correspond to multiple
	// logical lines, if those are connected by collapsed ranges.
	function LineView(doc, line, lineN) {
	// The starting line
	this.line = line;
	// Continuing lines, if any
	this.rest = visualLineContinued(line);
	// Number of logical lines in this visual line
	this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
	this.node = this.text = null;
	this.hidden = lineIsHidden(doc, line);
	}

	// Create a range of LineView objects for the given lines.
	function buildViewArray(cm, from, to) {
	var array = [], nextPos;
	for (var pos = from; pos < to; pos = nextPos) {
	var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
	nextPos = pos + view.size;
	array.push(view);
	}
	return array;
	}

	// Updates the display.view data structure for a given change to the
	// document. From and to are in pre-change coordinates. Lendiff is
	// the amount of lines added or subtracted by the change. This is
	// used for changes that span multiple lines, or change the way
	// lines are divided into visual lines. regLineChange (below)
	// registers single-line changes.
	function regChange(cm, from, to, lendiff) {
	if (from == null) from = cm.doc.first;
	if (to == null) to = cm.doc.first + cm.doc.size;
	if (!lendiff) lendiff = 0;

	var display = cm.display;
	if (lendiff && to < display.viewTo &&
	(display.updateLineNumbers == null \|\| display.updateLineNumbers > from))
	display.updateLineNumbers = from;

	cm.curOp.viewChanged = true;

	if (from >= display.viewTo) { // Change after
	if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
	resetView(cm);
	} else if (to <= display.viewFrom) { // Change before
	if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
	resetView(cm);
	} else {
	display.viewFrom += lendiff;
	display.viewTo += lendiff;
	}
	} else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
	resetView(cm);
	} else if (from <= display.viewFrom) { // Top overlap
	var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
	if (cut) {
	display.view = display.view.slice(cut.index);
	display.viewFrom = cut.lineN;
	display.viewTo += lendiff;
	} else {
	resetView(cm);
	}
	} else if (to >= display.viewTo) { // Bottom overlap
	var cut = viewCuttingPoint(cm, from, from, -1);
	if (cut) {
	display.view = display.view.slice(0, cut.index);
	display.viewTo = cut.lineN;
	} else {
	resetView(cm);
	}
	} else { // Gap in the middle
	var cutTop = viewCuttingPoint(cm, from, from, -1);
	var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
	if (cutTop && cutBot) {
	display.view = display.view.slice(0, cutTop.index)
	.concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
	.concat(display.view.slice(cutBot.index));
	display.viewTo += lendiff;
	} else {
	resetView(cm);
	}
	}

	var ext = display.externalMeasured;
	if (ext) {
	if (to < ext.lineN)
	ext.lineN += lendiff;
	else if (from < ext.lineN + ext.size)
	display.externalMeasured = null;
	}
	}

	// Register a change to a single line. Type must be one of "text",
	// "gutter", "class", "widget"
	function regLineChange(cm, line, type) {
	cm.curOp.viewChanged = true;
	var display = cm.display, ext = cm.display.externalMeasured;
	if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
	display.externalMeasured = null;

	if (line < display.viewFrom \|\| line >= display.viewTo) return;
	var lineView = display.view[findViewIndex(cm, line)];
	if (lineView.node == null) return;
	var arr = lineView.changes \|\| (lineView.changes = []);
	if (indexOf(arr, type) == -1) arr.push(type);
	}

	// Clear the view.
	function resetView(cm) {
	cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
	cm.display.view = [];
	cm.display.viewOffset = 0;
	}

	// Find the view element corresponding to a given line. Return null
	// when the line isn't visible.
	function findViewIndex(cm, n) {
	if (n >= cm.display.viewTo) return null;
	n -= cm.display.viewFrom;
	if (n < 0) return null;
	var view = cm.display.view;
	for (var i = 0; i < view.length; i++) {
	n -= view[i].size;
	if (n < 0) return i;
	}
	}

	function viewCuttingPoint(cm, oldN, newN, dir) {
	var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
	if (!sawCollapsedSpans \|\| newN == cm.doc.first + cm.doc.size)
	return {index: index, lineN: newN};
	for (var i = 0, n = cm.display.viewFrom; i < index; i++)
	n += view[i].size;
	if (n != oldN) {
	if (dir > 0) {
	if (index == view.length - 1) return null;
	diff = (n + view[index].size) - oldN;
	index++;
	} else {
	diff = n - oldN;
	}
	oldN += diff; newN += diff;
	}
	while (visualLineNo(cm.doc, newN) != newN) {
	if (index == (dir < 0 ? 0 : view.length - 1)) return null;
	newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
	index += dir;
	}
	return {index: index, lineN: newN};
	}

	// Force the view to cover a given range, adding empty view element
	// or clipping off existing ones as needed.
	function adjustView(cm, from, to) {
	var display = cm.display, view = display.view;
	if (view.length == 0 \|\| from >= display.viewTo \|\| to <= display.viewFrom) {
	display.view = buildViewArray(cm, from, to);
	display.viewFrom = from;
	} else {
	if (display.viewFrom > from)
	display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view);
	else if (display.viewFrom < from)
	display.view = display.view.slice(findViewIndex(cm, from));
	display.viewFrom = from;
	if (display.viewTo < to)
	display.view = display.view.concat(buildViewArray(cm, display.viewTo, to));
	else if (display.viewTo > to)
	display.view = display.view.slice(0, findViewIndex(cm, to));
	}
	display.viewTo = to;
	}

	// Count the number of lines in the view whose DOM representation is
	// out of date (or nonexistent).
	function countDirtyView(cm) {
	var view = cm.display.view, dirty = 0;
	for (var i = 0; i < view.length; i++) {
	var lineView = view[i];
	if (!lineView.hidden && (!lineView.node \|\| lineView.changes)) ++dirty;
	}
	return dirty;
	}

	// EVENT HANDLERS

	// Attach the necessary event handlers when initializing the editor
	function registerEventHandlers(cm) {
	var d = cm.display;
	on(d.scroller, "mousedown", operation(cm, onMouseDown));
	// Older IE's will not fire a second mousedown for a double click
	if (ie && ie_version < 11)
	on(d.scroller, "dblclick", operation(cm, function(e) {
	if (signalDOMEvent(cm, e)) return;
	var pos = posFromMouse(cm, e);
	if (!pos \|\| clickInGutter(cm, e) \|\| eventInWidget(cm.display, e)) return;
	e_preventDefault(e);
	var word = cm.findWordAt(pos);
	extendSelection(cm.doc, word.anchor, word.head);
	}));
	else
	on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) \|\| e_preventDefault(e); });
	// Some browsers fire contextmenu after opening the menu, at
	// which point we can't mess with it anymore. Context menu is
	// handled in onMouseDown for these browsers.
	if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});

	// Used to suppress mouse event handling when a touch happens
	var touchFinished, prevTouch = {end: 0};
	function finishTouch() {
	if (d.activeTouch) {
	touchFinished = setTimeout(function() {d.activeTouch = null;}, 1000);
	prevTouch = d.activeTouch;
	prevTouch.end = +new Date;
	}
	};
	function isMouseLikeTouchEvent(e) {
	if (e.touches.length != 1) return false;
	var touch = e.touches[0];
	return touch.radiusX <= 1 && touch.radiusY <= 1;
	}
	function farAway(touch, other) {
	if (other.left == null) return true;
	var dx = other.left - touch.left, dy = other.top - touch.top;
	return dx * dx + dy * dy > 20 * 20;
	}
	on(d.scroller, "touchstart", function(e) {
	if (!isMouseLikeTouchEvent(e)) {
	clearTimeout(touchFinished);
	var now = +new Date;
	d.activeTouch = {start: now, moved: false,
	prev: now - prevTouch.end <= 300 ? prevTouch : null};
	if (e.touches.length == 1) {
	d.activeTouch.left = e.touches[0].pageX;
	d.activeTouch.top = e.touches[0].pageY;
	}
	}
	});
	on(d.scroller, "touchmove", function() {
	if (d.activeTouch) d.activeTouch.moved = true;
	});
	on(d.scroller, "touchend", function(e) {
	var touch = d.activeTouch;
	if (touch && !eventInWidget(d, e) && touch.left != null &&
	!touch.moved && new Date - touch.start < 300) {
	var pos = cm.coordsChar(d.activeTouch, "page"), range;
	if (!touch.prev \|\| farAway(touch, touch.prev)) // Single tap
	range = new Range(pos, pos);
	else if (!touch.prev.prev \|\| farAway(touch, touch.prev.prev)) // Double tap
	range = cm.findWordAt(pos);
	else // Triple tap
	range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0)));
	cm.setSelection(range.anchor, range.head);
	cm.focus();
	e_preventDefault(e);
	}
	finishTouch();
	});
	on(d.scroller, "touchcancel", finishTouch);

	// Sync scrolling between fake scrollbars and real scrollable
	// area, ensure viewport is updated when scrolling.
	on(d.scroller, "scroll", function() {
	if (d.scroller.clientHeight) {
	setScrollTop(cm, d.scroller.scrollTop);
	setScrollLeft(cm, d.scroller.scrollLeft, true);
	signal(cm, "scroll", cm);
	}
	});

	// Listen to wheel events in order to try and update the viewport on time.
	on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
	on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});

	// Prevent wrapper from ever scrolling
	on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });

	d.dragFunctions = {
	enter: function(e) {if (!signalDOMEvent(cm, e)) e_stop(e);},
	over: function(e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }},
	start: function(e){onDragStart(cm, e);},
	drop: operation(cm, onDrop),
	leave: function() {clearDragCursor(cm);}
	};

	var inp = d.input.getField();
	on(inp, "keyup", function(e) { onKeyUp.call(cm, e); });
	on(inp, "keydown", operation(cm, onKeyDown));
	on(inp, "keypress", operation(cm, onKeyPress));
	on(inp, "focus", bind(onFocus, cm));
	on(inp, "blur", bind(onBlur, cm));
	}

	function dragDropChanged(cm, value, old) {
	var wasOn = old && old != CodeMirror.Init;
	if (!value != !wasOn) {
	var funcs = cm.display.dragFunctions;
	var toggle = value ? on : off;
	toggle(cm.display.scroller, "dragstart", funcs.start);
	toggle(cm.display.scroller, "dragenter", funcs.enter);
	toggle(cm.display.scroller, "dragover", funcs.over);
	toggle(cm.display.scroller, "dragleave", funcs.leave);
	toggle(cm.display.scroller, "drop", funcs.drop);
	}
	}

	// Called when the window resizes
	function onResize(cm) {
	var d = cm.display;
	if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)
	return;
	// Might be a text scaling operation, clear size caches.
	d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
	d.scrollbarsClipped = false;
	cm.setSize();
	}

	// MOUSE EVENTS

	// Return true when the given mouse event happened in a widget
	function eventInWidget(display, e) {
	for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
	if (!n \|\| (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") \|\|
	(n.parentNode == display.sizer && n != display.mover))
	return true;
	}
	}

	// Given a mouse event, find the corresponding position. If liberal
	// is false, it checks whether a gutter or scrollbar was clicked,
	// and returns null if it was. forRect is used by rectangular
	// selections, and tries to estimate a character position even for
	// coordinates beyond the right of the text.
	function posFromMouse(cm, e, liberal, forRect) {
	var display = cm.display;
	if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") return null;

	var x, y, space = display.lineSpace.getBoundingClientRect();
	// Fails unpredictably on IE[67] when mouse is dragged around quickly.
	try { x = e.clientX - space.left; y = e.clientY - space.top; }
	catch (e) { return null; }
	var coords = coordsChar(cm, x, y), line;
	if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
	var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
	coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
	}
	return coords;
	}

	// A mouse down can be a single click, double click, triple click,
	// start of selection drag, start of text drag, new cursor
	// (ctrl-click), rectangle drag (alt-drag), or xwin
	// middle-click-paste. Or it might be a click on something we should
	// not interfere with, such as a scrollbar or widget.
	function onMouseDown(e) {
	var cm = this, display = cm.display;
	if (display.activeTouch && display.input.supportsTouch() \|\| signalDOMEvent(cm, e)) return;
	display.shift = e.shiftKey;

	if (eventInWidget(display, e)) {
	if (!webkit) {
	// Briefly turn off draggability, to allow widgets to do
	// normal dragging things.
	display.scroller.draggable = false;
	setTimeout(function(){display.scroller.draggable = true;}, 100);
	}
	return;
	}
	if (clickInGutter(cm, e)) return;
	var start = posFromMouse(cm, e);
	window.focus();

	switch (e_button(e)) {
	case 1:
	// #3261: make sure, that we're not starting a second selection
	if (cm.state.selectingText)
	cm.state.selectingText(e);
	else if (start)
	leftButtonDown(cm, e, start);
	else if (e_target(e) == display.scroller)
	e_preventDefault(e);
	break;
	case 2:
	if (webkit) cm.state.lastMiddleDown = +new Date;
	if (start) extendSelection(cm.doc, start);
	setTimeout(function() {display.input.focus();}, 20);
	e_preventDefault(e);
	break;
	case 3:
	if (captureRightClick) onContextMenu(cm, e);
	else delayBlurEvent(cm);
	break;
	}
	}

	var lastClick, lastDoubleClick;
	function leftButtonDown(cm, e, start) {
	if (ie) setTimeout(bind(ensureFocus, cm), 0);
	else cm.curOp.focus = activeElt();

	var now = +new Date, type;
	if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {
	type = "triple";
	} else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
	type = "double";
	lastDoubleClick = {time: now, pos: start};
	} else {
	type = "single";
	lastClick = {time: now, pos: start};
	}

	var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained;
	if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) &&
	type == "single" && (contained = sel.contains(start)) > -1 &&
	(cmp((contained = sel.ranges[contained]).from(), start) < 0 \|\| start.xRel > 0) &&
	(cmp(contained.to(), start) > 0 \|\| start.xRel < 0))
	leftButtonStartDrag(cm, e, start, modifier);
	else
	leftButtonSelect(cm, e, start, type, modifier);
	}

	// Start a text drag. When it ends, see if any dragging actually
	// happen, and treat as a click if it didn't.
	function leftButtonStartDrag(cm, e, start, modifier) {
	var display = cm.display, startTime = +new Date;
	var dragEnd = operation(cm, function(e2) {
	if (webkit) display.scroller.draggable = false;
	cm.state.draggingText = false;
	off(document, "mouseup", dragEnd);
	off(display.scroller, "drop", dragEnd);
	if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
	e_preventDefault(e2);
	if (!modifier && +new Date - 200 < startTime)
	extendSelection(cm.doc, start);
	// Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
	if (webkit \|\| ie && ie_version == 9)
	setTimeout(function() {document.body.focus(); display.input.focus();}, 20);
	else
	display.input.focus();
	}
	});
	// Let the drag handler handle this.
	if (webkit) display.scroller.draggable = true;
	cm.state.draggingText = dragEnd;
	// IE's approach to draggable
	if (display.scroller.dragDrop) display.scroller.dragDrop();
	on(document, "mouseup", dragEnd);
	on(display.scroller, "drop", dragEnd);
	}

	// Normal selection, as opposed to text dragging.
	function leftButtonSelect(cm, e, start, type, addNew) {
	var display = cm.display, doc = cm.doc;
	e_preventDefault(e);

	var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;
	if (addNew && !e.shiftKey) {
	ourIndex = doc.sel.contains(start);
	if (ourIndex > -1)
	ourRange = ranges[ourIndex];
	else
	ourRange = new Range(start, start);
	} else {
	ourRange = doc.sel.primary();
	ourIndex = doc.sel.primIndex;
	}

	if (e.altKey) {
	type = "rect";
	if (!addNew) ourRange = new Range(start, start);
	start = posFromMouse(cm, e, true, true);
	ourIndex = -1;
	} else if (type == "double") {
	var word = cm.findWordAt(start);
	if (cm.display.shift \|\| doc.extend)
	ourRange = extendRange(doc, ourRange, word.anchor, word.head);
	else
	ourRange = word;
	} else if (type == "triple") {
	var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)));
	if (cm.display.shift \|\| doc.extend)
	ourRange = extendRange(doc, ourRange, line.anchor, line.head);
	else
	ourRange = line;
	} else {
	ourRange = extendRange(doc, ourRange, start);
	}

	if (!addNew) {
	ourIndex = 0;
	setSelection(doc, new Selection([ourRange], 0), sel_mouse);
	startSel = doc.sel;
	} else if (ourIndex == -1) {
	ourIndex = ranges.length;
	setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),
	{scroll: false, origin: "*mouse"});
	} else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single" && !e.shiftKey) {
	setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),
	{scroll: false, origin: "*mouse"});
	startSel = doc.sel;
	} else {
	replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
	}

	var lastPos = start;
	function extendTo(pos) {
	if (cmp(lastPos, pos) == 0) return;
	lastPos = pos;

	if (type == "rect") {
	var ranges = [], tabSize = cm.options.tabSize;
	var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
	var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
	var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
	for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
	line <= end; line++) {
	var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
	if (left == right)
	ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)));
	else if (text.length > leftPos)
	ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))));
	}
	if (!ranges.length) ranges.push(new Range(start, start));
	setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
	{origin: "*mouse", scroll: false});
	cm.scrollIntoView(pos);
	} else {
	var oldRange = ourRange;
	var anchor = oldRange.anchor, head = pos;
	if (type != "single") {
	if (type == "double")
	var range = cm.findWordAt(pos);
	else
	var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));
	if (cmp(range.anchor, anchor) > 0) {
	head = range.head;
	anchor = minPos(oldRange.from(), range.anchor);
	} else {
	head = range.anchor;
	anchor = maxPos(oldRange.to(), range.head);
	}
	}
	var ranges = startSel.ranges.slice(0);
	ranges[ourIndex] = new Range(clipPos(doc, anchor), head);
	setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse);
	}
	}

	var editorSize = display.wrapper.getBoundingClientRect();
	// Used to ensure timeout re-tries don't fire when another extend
	// happened in the meantime (clearTimeout isn't reliable -- at
	// least on Chrome, the timeouts still happen even when cleared,
	// if the clear happens after their scheduled firing time).
	var counter = 0;

	function extend(e) {
	var curCount = ++counter;
	var cur = posFromMouse(cm, e, true, type == "rect");
	if (!cur) return;
	if (cmp(cur, lastPos) != 0) {
	cm.curOp.focus = activeElt();
	extendTo(cur);
	var visible = visibleLines(display, doc);
	if (cur.line >= visible.to \|\| cur.line < visible.from)
	setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
	} else {
	var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
	if (outside) setTimeout(operation(cm, function() {
	if (counter != curCount) return;
	display.scroller.scrollTop += outside;
	extend(e);
	}), 50);
	}
	}

	function done(e) {
	cm.state.selectingText = false;
	counter = Infinity;
	e_preventDefault(e);
	display.input.focus();
	off(document, "mousemove", move);
	off(document, "mouseup", up);
	doc.history.lastSelOrigin = null;
	}

	var move = operation(cm, function(e) {
	if (!e_button(e)) done(e);
	else extend(e);
	});
	var up = operation(cm, done);
	cm.state.selectingText = up;
	on(document, "mousemove", move);
	on(document, "mouseup", up);
	}

	// Determines whether an event happened in the gutter, and fires the
	// handlers for the corresponding event.
	function gutterEvent(cm, e, type, prevent) {
	try { var mX = e.clientX, mY = e.clientY; }
	catch(e) { return false; }
	if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false;
	if (prevent) e_preventDefault(e);

	var display = cm.display;
	var lineBox = display.lineDiv.getBoundingClientRect();

	if (mY > lineBox.bottom \|\| !hasHandler(cm, type)) return e_defaultPrevented(e);
	mY -= lineBox.top - display.viewOffset;

	for (var i = 0; i < cm.options.gutters.length; ++i) {
	var g = display.gutters.childNodes[i];
	if (g && g.getBoundingClientRect().right >= mX) {
	var line = lineAtHeight(cm.doc, mY);
	var gutter = cm.options.gutters[i];
	signal(cm, type, cm, line, gutter, e);
	return e_defaultPrevented(e);
	}
	}
	}

	function clickInGutter(cm, e) {
	return gutterEvent(cm, e, "gutterClick", true);
	}

	// Kludge to work around strange IE behavior where it'll sometimes
	// re-fire a series of drag-related events right after the drop (#1551)
	var lastDrop = 0;

	function onDrop(e) {
	var cm = this;
	clearDragCursor(cm);
	if (signalDOMEvent(cm, e) \|\| eventInWidget(cm.display, e))
	return;
	e_preventDefault(e);
	if (ie) lastDrop = +new Date;
	var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
	if (!pos \|\| isReadOnly(cm)) return;
	// Might be a file drop, in which case we simply extract the text
	// and insert it.
	if (files && files.length && window.FileReader && window.File) {
	var n = files.length, text = Array(n), read = 0;
	var loadFile = function(file, i) {
	if (cm.options.allowDropFileTypes &&
	indexOf(cm.options.allowDropFileTypes, file.type) == -1)
	return;

	var reader = new FileReader;
	reader.onload = operation(cm, function() {
	var content = reader.result;
	if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) content = "";
	text[i] = content;
	if (++read == n) {
	pos = clipPos(cm.doc, pos);
	var change = {from: pos, to: pos,
	text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())),
	origin: "paste"};
	makeChange(cm.doc, change);
	setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
	}
	});
	reader.readAsText(file);
	};
	for (var i = 0; i < n; ++i) loadFile(files[i], i);
	} else { // Normal drop
	// Don't do a replace if the drop happened inside of the selected text.
	if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
	cm.state.draggingText(e);
	// Ensure the editor is re-focused
	setTimeout(function() {cm.display.input.focus();}, 20);
	return;
	}
	try {
	var text = e.dataTransfer.getData("Text");
	if (text) {
	if (cm.state.draggingText && !(mac ? e.altKey : e.ctrlKey))
	var selected = cm.listSelections();
	setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
	if (selected) for (var i = 0; i < selected.length; ++i)
	replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag");
	cm.replaceSelection(text, "around", "paste");
	cm.display.input.focus();
	}
	}
	catch(e){}
	}
	}

	function onDragStart(cm, e) {
	if (ie && (!cm.state.draggingText \|\| +new Date - lastDrop < 100)) { e_stop(e); return; }
	if (signalDOMEvent(cm, e) \|\| eventInWidget(cm.display, e)) return;

	e.dataTransfer.setData("Text", cm.getSelection());

	// Use dummy image instead of default browsers image.
	// Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
	if (e.dataTransfer.setDragImage && !safari) {
	var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
	img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
	if (presto) {
	img.width = img.height = 1;
	cm.display.wrapper.appendChild(img);
	// Force a relayout, or Opera won't use our image for some obscure reason
	img._top = img.offsetTop;
	}
	e.dataTransfer.setDragImage(img, 0, 0);
	if (presto) img.parentNode.removeChild(img);
	}
	}

	function onDragOver(cm, e) {
	var pos = posFromMouse(cm, e);
	if (!pos) return;
	var frag = document.createDocumentFragment();
	drawSelectionCursor(cm, pos, frag);
	if (!cm.display.dragCursor) {
	cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors");
	cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv);
	}
	removeChildrenAndAdd(cm.display.dragCursor, frag);
	}

	function clearDragCursor(cm) {
	if (cm.display.dragCursor) {
	cm.display.lineSpace.removeChild(cm.display.dragCursor);
	cm.display.dragCursor = null;
	}
	}

	// SCROLL EVENTS

	// Sync the scrollable area and scrollbars, ensure the viewport
	// covers the visible area.
	function setScrollTop(cm, val) {
	if (Math.abs(cm.doc.scrollTop - val) < 2) return;
	cm.doc.scrollTop = val;
	if (!gecko) updateDisplaySimple(cm, {top: val});
	if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
	cm.display.scrollbars.setScrollTop(val);
	if (gecko) updateDisplaySimple(cm);
	startWorker(cm, 100);
	}
	// Sync scroller and scrollbar, ensure the gutter elements are
	// aligned.
	function setScrollLeft(cm, val, isScroller) {
	if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;
	val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
	cm.doc.scrollLeft = val;
	alignHorizontally(cm);
	if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
	cm.display.scrollbars.setScrollLeft(val);
	}

	// Since the delta values reported on mouse wheel events are
	// unstandardized between browsers and even browser versions, and
	// generally horribly unpredictable, this code starts by measuring
	// the scroll effect that the first few mouse wheel events have,
	// and, from that, detects the way it can convert deltas to pixel
	// offsets afterwards.
	//
	// The reason we want to know the amount a wheel event will scroll
	// is that it gives us a chance to update the display before the
	// actual scrolling happens, reducing flickering.

	var wheelSamples = 0, wheelPixelsPerUnit = null;
	// Fill in a browser-detected starting value on browsers where we
	// know one. These don't have to be accurate -- the result of them
	// being wrong would just be a slight flicker on the first wheel
	// scroll (if it is large enough).
	if (ie) wheelPixelsPerUnit = -.53;
	else if (gecko) wheelPixelsPerUnit = 15;
	else if (chrome) wheelPixelsPerUnit = -.7;
	else if (safari) wheelPixelsPerUnit = -1/3;

	var wheelEventDelta = function(e) {
	var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
	if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
	if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
	else if (dy == null) dy = e.wheelDelta;
	return {x: dx, y: dy};
	};
	CodeMirror.wheelEventPixels = function(e) {
	var delta = wheelEventDelta(e);
	delta.x *= wheelPixelsPerUnit;
	delta.y *= wheelPixelsPerUnit;
	return delta;
	};

	function onScrollWheel(cm, e) {
	var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;

	var display = cm.display, scroll = display.scroller;
	// Quit if there's nothing to scroll here
	var canScrollX = scroll.scrollWidth > scroll.clientWidth;
	var canScrollY = scroll.scrollHeight > scroll.clientHeight;
	if (!(dx && canScrollX \|\| dy && canScrollY)) return;

	// Webkit browsers on OS X abort momentum scrolls when the target
	// of the scroll event is removed from the scrollable element.
	// This hack (see related code in patchDisplay) makes sure the
	// element is kept around.
	if (dy && mac && webkit) {
	outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
	for (var i = 0; i < view.length; i++) {
	if (view[i].node == cur) {
	cm.display.currentWheelTarget = cur;
	break outer;
	}
	}
	}
	}

	// On some browsers, horizontal scrolling will cause redraws to
	// happen before the gutter has been realigned, causing it to
	// wriggle around in a most unseemly way. When we have an
	// estimated pixels/delta value, we just handle horizontal
	// scrolling entirely here. It'll be slightly off from native, but
	// better than glitching out.
	if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
	if (dy && canScrollY)
	setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
	setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
	// Only prevent default scrolling if vertical scrolling is
	// actually possible. Otherwise, it causes vertical scroll
	// jitter on OSX trackpads when deltaX is small and deltaY
	// is large (issue #3579)
	if (!dy \|\| (dy && canScrollY))
	e_preventDefault(e);
	display.wheelStartX = null; // Abort measurement, if in progress
	return;
	}

	// 'Project' the visible viewport to cover the area that is being
	// scrolled into view (if we know enough to estimate it).
	if (dy && wheelPixelsPerUnit != null) {
	var pixels = dy * wheelPixelsPerUnit;
	var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
	if (pixels < 0) top = Math.max(0, top + pixels - 50);
	else bot = Math.min(cm.doc.height, bot + pixels + 50);
	updateDisplaySimple(cm, {top: top, bottom: bot});
	}

	if (wheelSamples < 20) {
	if (display.wheelStartX == null) {
	display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
	display.wheelDX = dx; display.wheelDY = dy;
	setTimeout(function() {
	if (display.wheelStartX == null) return;
	var movedX = scroll.scrollLeft - display.wheelStartX;
	var movedY = scroll.scrollTop - display.wheelStartY;
	var sample = (movedY && display.wheelDY && movedY / display.wheelDY) \|\|
	(movedX && display.wheelDX && movedX / display.wheelDX);
	display.wheelStartX = display.wheelStartY = null;
	if (!sample) return;
	wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
	++wheelSamples;
	}, 200);
	} else {
	display.wheelDX += dx; display.wheelDY += dy;
	}
	}
	}

	// KEY EVENTS

	// Run a handler that was bound to a key.
	function doHandleBinding(cm, bound, dropShift) {
	if (typeof bound == "string") {
	bound = commands[bound];
	if (!bound) return false;
	}
	// Ensure previous input has been read, so that the handler sees a
	// consistent view of the document
	cm.display.input.ensurePolled();
	var prevShift = cm.display.shift, done = false;
	try {
	if (isReadOnly(cm)) cm.state.suppressEdits = true;
	if (dropShift) cm.display.shift = false;
	done = bound(cm) != Pass;
	} finally {
	cm.display.shift = prevShift;
	cm.state.suppressEdits = false;
	}
	return done;
	}

	function lookupKeyForEditor(cm, name, handle) {
	for (var i = 0; i < cm.state.keyMaps.length; i++) {
	var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);
	if (result) return result;
	}
	return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
	\|\| lookupKey(name, cm.options.keyMap, handle, cm);
	}

	var stopSeq = new Delayed;
	function dispatchKey(cm, name, e, handle) {
	var seq = cm.state.keySeq;
	if (seq) {
	if (isModifierKey(name)) return "handled";
	stopSeq.set(50, function() {
	if (cm.state.keySeq == seq) {
	cm.state.keySeq = null;
	cm.display.input.reset();
	}
	});
	name = seq + " " + name;
	}
	var result = lookupKeyForEditor(cm, name, handle);

	if (result == "multi")
	cm.state.keySeq = name;
	if (result == "handled")
	signalLater(cm, "keyHandled", cm, name, e);

	if (result == "handled" \|\| result == "multi") {
	e_preventDefault(e);
	restartBlink(cm);
	}

	if (seq && !result && /\'$/.test(name)) {
	e_preventDefault(e);
	return true;
	}
	return !!result;
	}

	// Handle a key from the keydown event.
	function handleKeyBinding(cm, e) {
	var name = keyName(e, true);
	if (!name) return false;

	if (e.shiftKey && !cm.state.keySeq) {
	// First try to resolve full name (including 'Shift-'). Failing
	// that, see if there is a cursor-motion command (starting with
	// 'go') bound to the keyname without 'Shift-'.
	return dispatchKey(cm, "Shift-" + name, e, function(b) {return doHandleBinding(cm, b, true);})
	\|\| dispatchKey(cm, name, e, function(b) {
	if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
	return doHandleBinding(cm, b);
	});
	} else {
	return dispatchKey(cm, name, e, function(b) { return doHandleBinding(cm, b); });
	}
	}

	// Handle a key from the keypress event
	function handleCharBinding(cm, e, ch) {
	return dispatchKey(cm, "'" + ch + "'", e,
	function(b) { return doHandleBinding(cm, b, true); });
	}

	var lastStoppedKey = null;
	function onKeyDown(e) {
	var cm = this;
	cm.curOp.focus = activeElt();
	if (signalDOMEvent(cm, e)) return;
	// IE does strange things with escape.
	if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false;
	var code = e.keyCode;
	cm.display.shift = code == 16 \|\| e.shiftKey;
	var handled = handleKeyBinding(cm, e);
	if (presto) {
	lastStoppedKey = handled ? code : null;
	// Opera has no cut event... we try to at least catch the key combo
	if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
	cm.replaceSelection("", null, "cut");
	}

	// Turn mouse into crosshair when Alt is held on Mac.
	if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
	showCrossHair(cm);
	}

	function showCrossHair(cm) {
	var lineDiv = cm.display.lineDiv;
	addClass(lineDiv, "CodeMirror-crosshair");

	function up(e) {
	if (e.keyCode == 18 \|\| !e.altKey) {
	rmClass(lineDiv, "CodeMirror-crosshair");
	off(document, "keyup", up);
	off(document, "mouseover", up);
	}
	}
	on(document, "keyup", up);
	on(document, "mouseover", up);
	}

	function onKeyUp(e) {
	if (e.keyCode == 16) this.doc.sel.shift = false;
	signalDOMEvent(this, e);
	}

	function onKeyPress(e) {
	var cm = this;
	if (eventInWidget(cm.display, e) \|\| signalDOMEvent(cm, e) \|\| e.ctrlKey && !e.altKey \|\| mac && e.metaKey) return;
	var keyCode = e.keyCode, charCode = e.charCode;
	if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
	if ((presto && (!e.which \|\| e.which < 10)) && handleKeyBinding(cm, e)) return;
	var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
	if (handleCharBinding(cm, e, ch)) return;
	cm.display.input.onKeyPress(e);
	}

	// FOCUS/BLUR EVENTS

	function delayBlurEvent(cm) {
	cm.state.delayingBlurEvent = true;
	setTimeout(function() {
	if (cm.state.delayingBlurEvent) {
	cm.state.delayingBlurEvent = false;
	onBlur(cm);
	}
	}, 100);
	}

	function onFocus(cm) {
	if (cm.state.delayingBlurEvent) cm.state.delayingBlurEvent = false;

	if (cm.options.readOnly == "nocursor") return;
	if (!cm.state.focused) {
	signal(cm, "focus", cm);
	cm.state.focused = true;
	addClass(cm.display.wrapper, "CodeMirror-focused");
	// This test prevents this from firing when a context
	// menu is closed (since the input reset would kill the
	// select-all detection hack)
	if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
	cm.display.input.reset();
	if (webkit) setTimeout(function() { cm.display.input.reset(true); }, 20); // Issue #1730
	}
	cm.display.input.receivedFocus();
	}
	restartBlink(cm);
	}
	function onBlur(cm) {
	if (cm.state.delayingBlurEvent) return;

	if (cm.state.focused) {
	signal(cm, "blur", cm);
	cm.state.focused = false;
	rmClass(cm.display.wrapper, "CodeMirror-focused");
	}
	clearInterval(cm.display.blinker);
	setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150);
	}

	// CONTEXT MENU HANDLING

	// To make the context menu work, we need to briefly unhide the
	// textarea (making it as unobtrusive as possible) to let the
	// right-click take effect on it.
	function onContextMenu(cm, e) {
	if (eventInWidget(cm.display, e) \|\| contextMenuInGutter(cm, e)) return;
	if (signalDOMEvent(cm, e, "contextmenu")) return;
	cm.display.input.onContextMenu(e);
	}

	function contextMenuInGutter(cm, e) {
	if (!hasHandler(cm, "gutterContextMenu")) return false;
	return gutterEvent(cm, e, "gutterContextMenu", false);
	}

	// UPDATING

	// Compute the position of the end of a change (its 'to' property
	// refers to the pre-change end).
	var changeEnd = CodeMirror.changeEnd = function(change) {
	if (!change.text) return change.to;
	return Pos(change.from.line + change.text.length - 1,
	lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));
	};

	// Adjust a position to refer to the post-change position of the
	// same text, or the end of the change if the change covers it.
	function adjustForChange(pos, change) {
	if (cmp(pos, change.from) < 0) return pos;
	if (cmp(pos, change.to) <= 0) return changeEnd(change);

	var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
	if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch;
	return Pos(line, ch);
	}

	function computeSelAfterChange(doc, change) {
	var out = [];
	for (var i = 0; i < doc.sel.ranges.length; i++) {
	var range = doc.sel.ranges[i];
	out.push(new Range(adjustForChange(range.anchor, change),
	adjustForChange(range.head, change)));
	}
	return normalizeSelection(out, doc.sel.primIndex);
	}

	function offsetPos(pos, old, nw) {
	if (pos.line == old.line)
	return Pos(nw.line, pos.ch - old.ch + nw.ch);
	else
	return Pos(nw.line + (pos.line - old.line), pos.ch);
	}

	// Used by replaceSelections to allow moving the selection to the
	// start or around the replaced test. Hint may be "start" or "around".
	function computeReplacedSel(doc, changes, hint) {
	var out = [];
	var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
	for (var i = 0; i < changes.length; i++) {
	var change = changes[i];
	var from = offsetPos(change.from, oldPrev, newPrev);
	var to = offsetPos(changeEnd(change), oldPrev, newPrev);
	oldPrev = change.to;
	newPrev = to;
	if (hint == "around") {
	var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
	out[i] = new Range(inv ? to : from, inv ? from : to);
	} else {
	out[i] = new Range(from, from);
	}
	}
	return new Selection(out, doc.sel.primIndex);
	}

	// Allow "beforeChange" event handlers to influence a change
	function filterChange(doc, change, update) {
	var obj = {
	canceled: false,
	from: change.from,
	to: change.to,
	text: change.text,
	origin: change.origin,
	cancel: function() { this.canceled = true; }
	};
	if (update) obj.update = function(from, to, text, origin) {
	if (from) this.from = clipPos(doc, from);
	if (to) this.to = clipPos(doc, to);
	if (text) this.text = text;
	if (origin !== undefined) this.origin = origin;
	};
	signal(doc, "beforeChange", doc, obj);
	if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj);

	if (obj.canceled) return null;
	return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
	}

	// Apply a change to a document, and add it to the document's
	// history, and propagating it to all linked documents.
	function makeChange(doc, change, ignoreReadOnly) {
	if (doc.cm) {
	if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly);
	if (doc.cm.state.suppressEdits) return;
	}

	if (hasHandler(doc, "beforeChange") \|\| doc.cm && hasHandler(doc.cm, "beforeChange")) {
	change = filterChange(doc, change, true);
	if (!change) return;
	}

	// Possibly split or suppress the update based on the presence
	// of read-only spans in its range.
	var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
	if (split) {
	for (var i = split.length - 1; i >= 0; --i)
	makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text});
	} else {
	makeChangeInner(doc, change);
	}
	}

	function makeChangeInner(doc, change) {
	if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return;
	var selAfter = computeSelAfterChange(doc, change);
	addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);

	makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
	var rebased = [];

	linkedDocs(doc, function(doc, sharedHist) {
	if (!sharedHist && indexOf(rebased, doc.history) == -1) {
	rebaseHist(doc.history, change);
	rebased.push(doc.history);
	}
	makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
	});
	}

	// Revert a change stored in a document's history.
	function makeChangeFromHistory(doc, type, allowSelectionOnly) {
	if (doc.cm && doc.cm.state.suppressEdits) return;

	var hist = doc.history, event, selAfter = doc.sel;
	var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;

	// Verify that there is a useable event (so that ctrl-z won't
	// needlessly clear selection events)
	for (var i = 0; i < source.length; i++) {
	event = source[i];
	if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
	break;
	}
	if (i == source.length) return;
	hist.lastOrigin = hist.lastSelOrigin = null;

	for (;;) {
	event = source.pop();
	if (event.ranges) {
	pushSelectionToHistory(event, dest);
	if (allowSelectionOnly && !event.equals(doc.sel)) {
	setSelection(doc, event, {clearRedo: false});
	return;
	}
	selAfter = event;
	}
	else break;
	}

	// Build up a reverse change object to add to the opposite history
	// stack (redo when undoing, and vice versa).
	var antiChanges = [];
	pushSelectionToHistory(selAfter, dest);
	dest.push({changes: antiChanges, generation: hist.generation});
	hist.generation = event.generation \|\| ++hist.maxGeneration;

	var filter = hasHandler(doc, "beforeChange") \|\| doc.cm && hasHandler(doc.cm, "beforeChange");

	for (var i = event.changes.length - 1; i >= 0; --i) {
	var change = event.changes[i];
	change.origin = type;
	if (filter && !filterChange(doc, change, false)) {
	source.length = 0;
	return;
	}

	antiChanges.push(historyChangeFromChange(doc, change));

	var after = i ? computeSelAfterChange(doc, change) : lst(source);
	makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
	if (!i && doc.cm) doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)});
	var rebased = [];

	// Propagate to the linked documents
	linkedDocs(doc, function(doc, sharedHist) {
	if (!sharedHist && indexOf(rebased, doc.history) == -1) {
	rebaseHist(doc.history, change);
	rebased.push(doc.history);
	}
	makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
	});
	}
	}

	// Sub-views need their line numbers shifted when text is added
	// above or below them in the parent document.
	function shiftDoc(doc, distance) {
	if (distance == 0) return;
	doc.first += distance;
	doc.sel = new Selection(map(doc.sel.ranges, function(range) {
	return new Range(Pos(range.anchor.line + distance, range.anchor.ch),
	Pos(range.head.line + distance, range.head.ch));
	}), doc.sel.primIndex);
	if (doc.cm) {
	regChange(doc.cm, doc.first, doc.first - distance, distance);
	for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
	regLineChange(doc.cm, l, "gutter");
	}
	}

	// More lower-level change function, handling only a single document
	// (not linked ones).
	function makeChangeSingleDoc(doc, change, selAfter, spans) {
	if (doc.cm && !doc.cm.curOp)
	return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);

	if (change.to.line < doc.first) {
	shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
	return;
	}
	if (change.from.line > doc.lastLine()) return;

	// Clip the change to the size of this doc
	if (change.from.line < doc.first) {
	var shift = change.text.length - 1 - (doc.first - change.from.line);
	shiftDoc(doc, shift);
	change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
	text: [lst(change.text)], origin: change.origin};
	}
	var last = doc.lastLine();
	if (change.to.line > last) {
	change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
	text: [change.text[0]], origin: change.origin};
	}

	change.removed = getBetween(doc, change.from, change.to);

	if (!selAfter) selAfter = computeSelAfterChange(doc, change);
	if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
	else updateDoc(doc, change, spans);
	setSelectionNoUndo(doc, selAfter, sel_dontScroll);
	}

	// Handle the interaction of a change to a document with the editor
	// that this document is part of.
	function makeChangeSingleDocInEditor(cm, change, spans) {
	var doc = cm.doc, display = cm.display, from = change.from, to = change.to;

	var recomputeMaxLength = false, checkWidthStart = from.line;
	if (!cm.options.lineWrapping) {
	checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
	doc.iter(checkWidthStart, to.line + 1, function(line) {
	if (line == display.maxLine) {
	recomputeMaxLength = true;
	return true;
	}
	});
	}

	if (doc.sel.contains(change.from, change.to) > -1)
	signalCursorActivity(cm);

	updateDoc(doc, change, spans, estimateHeight(cm));

	if (!cm.options.lineWrapping) {
	doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
	var len = lineLength(line);
	if (len > display.maxLineLength) {
	display.maxLine = line;
	display.maxLineLength = len;
	display.maxLineChanged = true;
	recomputeMaxLength = false;
	}
	});
	if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
	}

	// Adjust frontier, schedule worker
	doc.frontier = Math.min(doc.frontier, from.line);
	startWorker(cm, 400);

	var lendiff = change.text.length - (to.line - from.line) - 1;
	// Remember that these lines changed, for updating the display
	if (change.full)
	regChange(cm);
	else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
	regLineChange(cm, from.line, "text");
	else
	regChange(cm, from.line, to.line + 1, lendiff);

	var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change");
	if (changeHandler \|\| changesHandler) {
	var obj = {
	from: from, to: to,
	text: change.text,
	removed: change.removed,
	origin: change.origin
	};
	if (changeHandler) signalLater(cm, "change", cm, obj);
	if (changesHandler) (cm.curOp.changeObjs \|\| (cm.curOp.changeObjs = [])).push(obj);
	}
	cm.display.selForContextMenu = null;
	}

	function replaceRange(doc, code, from, to, origin) {
	if (!to) to = from;
	if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; }
	if (typeof code == "string") code = doc.splitLines(code);
	makeChange(doc, {from: from, to: to, text: code, origin: origin});
	}

	// SCROLLING THINGS INTO VIEW

	// If an editor sits on the top or bottom of the window, partially
	// scrolled out of view, this ensures that the cursor is visible.
	function maybeScrollWindow(cm, coords) {
	if (signalDOMEvent(cm, "scrollCursorIntoView")) return;

	var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
	if (coords.top + box.top < 0) doScroll = true;
	else if (coords.bottom + box.top > (window.innerHeight \|\| document.documentElement.clientHeight)) doScroll = false;
	if (doScroll != null && !phantom) {
	var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
	(coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +
	(coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + "px; left: " +
	coords.left + "px; width: 2px;");
	cm.display.lineSpace.appendChild(scrollNode);
	scrollNode.scrollIntoView(doScroll);
	cm.display.lineSpace.removeChild(scrollNode);
	}
	}

	// Scroll a given position into view (immediately), verifying that
	// it actually became visible (as line heights are accurately
	// measured, the position of something may 'drift' during drawing).
	function scrollPosIntoView(cm, pos, end, margin) {
	if (margin == null) margin = 0;
	for (var limit = 0; limit < 5; limit++) {
	var changed = false, coords = cursorCoords(cm, pos);
	var endCoords = !end \|\| end == pos ? coords : cursorCoords(cm, end);
	var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
	Math.min(coords.top, endCoords.top) - margin,
	Math.max(coords.left, endCoords.left),
	Math.max(coords.bottom, endCoords.bottom) + margin);
	var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
	if (scrollPos.scrollTop != null) {
	setScrollTop(cm, scrollPos.scrollTop);
	if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;
	}
	if (scrollPos.scrollLeft != null) {
	setScrollLeft(cm, scrollPos.scrollLeft);
	if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
	}
	if (!changed) break;
	}
	return coords;
	}

	// Scroll a given set of coordinates into view (immediately).
	function scrollIntoView(cm, x1, y1, x2, y2) {
	var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
	if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
	if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
	}

	// Calculate a new scroll position needed to scroll the given
	// rectangle into view. Returns an object with scrollTop and
	// scrollLeft properties. When these are undefined, the
	// vertical/horizontal position does not need to be adjusted.
	function calculateScrollPos(cm, x1, y1, x2, y2) {
	var display = cm.display, snapMargin = textHeight(cm.display);
	if (y1 < 0) y1 = 0;
	var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
	var screen = displayHeight(cm), result = {};
	if (y2 - y1 > screen) y2 = y1 + screen;
	var docBottom = cm.doc.height + paddingVert(display);
	var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
	if (y1 < screentop) {
	result.scrollTop = atTop ? 0 : y1;
	} else if (y2 > screentop + screen) {
	var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);
	if (newTop != screentop) result.scrollTop = newTop;
	}

	var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
	var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0);
	var tooWide = x2 - x1 > screenw;
	if (tooWide) x2 = x1 + screenw;
	if (x1 < 10)
	result.scrollLeft = 0;
	else if (x1 < screenleft)
	result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10));
	else if (x2 > screenw + screenleft - 3)
	result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw;
	return result;
	}

	// Store a relative adjustment to the scroll position in the current
	// operation (to be applied when the operation finishes).
	function addToScrollPos(cm, left, top) {
	if (left != null \|\| top != null) resolveScrollToPos(cm);
	if (left != null)
	cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left;
	if (top != null)
	cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
	}

	// Make sure that at the end of the operation the current cursor is
	// shown.
	function ensureCursorVisible(cm) {
	resolveScrollToPos(cm);
	var cur = cm.getCursor(), from = cur, to = cur;
	if (!cm.options.lineWrapping) {
	from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur;
	to = Pos(cur.line, cur.ch + 1);
	}
	cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true};
	}

	// When an operation has its scrollToPos property set, and another
	// scroll action is applied before the end of the operation, this
	// 'simulates' scrolling that position into view in a cheap way, so
	// that the effect of intermediate scroll commands is not ignored.
	function resolveScrollToPos(cm) {
	var range = cm.curOp.scrollToPos;
	if (range) {
	cm.curOp.scrollToPos = null;
	var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);
	var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),
	Math.min(from.top, to.top) - range.margin,
	Math.max(from.right, to.right),
	Math.max(from.bottom, to.bottom) + range.margin);
	cm.scrollTo(sPos.scrollLeft, sPos.scrollTop);
	}
	}

	// API UTILITIES

	// Indent the given line. The how parameter can be "smart",
	// "add"/null, "subtract", or "prev". When aggressive is false
	// (typically set to true for forced single-line indents), empty
	// lines are not indented, and places where the mode returns Pass
	// are left alone.
	function indentLine(cm, n, how, aggressive) {
	var doc = cm.doc, state;
	if (how == null) how = "add";
	if (how == "smart") {
	// Fall back to "prev" when the mode doesn't have an indentation
	// method.
	if (!doc.mode.indent) how = "prev";
	else state = getStateBefore(cm, n);
	}

	var tabSize = cm.options.tabSize;
	var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
	if (line.stateAfter) line.stateAfter = null;
	var curSpaceString = line.text.match(/^\s*/)[0], indentation;
	if (!aggressive && !/\S/.test(line.text)) {
	indentation = 0;
	how = "not";
	} else if (how == "smart") {
	indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
	if (indentation == Pass \|\| indentation > 150) {
	if (!aggressive) return;
	how = "prev";
	}
	}
	if (how == "prev") {
	if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
	else indentation = 0;
	} else if (how == "add") {
	indentation = curSpace + cm.options.indentUnit;
	} else if (how == "subtract") {
	indentation = curSpace - cm.options.indentUnit;
	} else if (typeof how == "number") {
	indentation = curSpace + how;
	}
	indentation = Math.max(0, indentation);

	var indentString = "", pos = 0;
	if (cm.options.indentWithTabs)
	for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
	if (pos < indentation) indentString += spaceStr(indentation - pos);

	if (indentString != curSpaceString) {
	replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
	line.stateAfter = null;
	return true;
	} else {
	// Ensure that, if the cursor was in the whitespace at the start
	// of the line, it is moved to the end of that space.
	for (var i = 0; i < doc.sel.ranges.length; i++) {
	var range = doc.sel.ranges[i];
	if (range.head.line == n && range.head.ch < curSpaceString.length) {
	var pos = Pos(n, curSpaceString.length);
	replaceOneSelection(doc, i, new Range(pos, pos));
	break;
	}
	}
	}
	}

	// Utility for applying a change to a line by handle or number,
	// returning the number and optionally registering the line as
	// changed.
	function changeLine(doc, handle, changeType, op) {
	var no = handle, line = handle;
	if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
	else no = lineNo(handle);
	if (no == null) return null;
	if (op(line, no) && doc.cm) regLineChange(doc.cm, no, changeType);
	return line;
	}

	// Helper for deleting text near the selection(s), used to implement
	// backspace, delete, and similar functionality.
	function deleteNearSelection(cm, compute) {
	var ranges = cm.doc.sel.ranges, kill = [];
	// Build up a set of ranges to kill first, merging overlapping
	// ranges.
	for (var i = 0; i < ranges.length; i++) {
	var toKill = compute(ranges[i]);
	while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
	var replaced = kill.pop();
	if (cmp(replaced.from, toKill.from) < 0) {
	toKill.from = replaced.from;
	break;
	}
	}
	kill.push(toKill);
	}
	// Next, remove those actual ranges.
	runInOp(cm, function() {
	for (var i = kill.length - 1; i >= 0; i--)
	replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete");
	ensureCursorVisible(cm);
	});
	}

	// Used for horizontal relative motion. Dir is -1 or 1 (left or
	// right), unit can be "char", "column" (like char, but doesn't
	// cross line boundaries), "word" (across next word), or "group" (to
	// the start of next group of word or non-word-non-whitespace
	// chars). The visually param controls whether, in right-to-left
	// text, direction 1 means to move towards the next index in the
	// string, or towards the character to the right of the current
	// position. The resulting position will have a hitSide=true
	// property if it reached the end of the document.
	function findPosH(doc, pos, dir, unit, visually) {
	var line = pos.line, ch = pos.ch, origDir = dir;
	var lineObj = getLine(doc, line);
	var possible = true;
	function findNextLine() {
	var l = line + dir;
	if (l < doc.first \|\| l >= doc.first + doc.size) return (possible = false);
	line = l;
	return lineObj = getLine(doc, l);
	}
	function moveOnce(boundToLine) {
	var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
	if (next == null) {
	if (!boundToLine && findNextLine()) {
	if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
	else ch = dir < 0 ? lineObj.text.length : 0;
	} else return (possible = false);
	} else ch = next;
	return true;
	}

	if (unit == "char") moveOnce();
	else if (unit == "column") moveOnce(true);
	else if (unit == "word" \|\| unit == "group") {
	var sawType = null, group = unit == "group";
	var helper = doc.cm && doc.cm.getHelper(pos, "wordChars");
	for (var first = true;; first = false) {
	if (dir < 0 && !moveOnce(!first)) break;
	var cur = lineObj.text.charAt(ch) \|\| "\n";
	var type = isWordChar(cur, helper) ? "w"
	: group && cur == "\n" ? "n"
	: !group \|\| /\s/.test(cur) ? null
	: "p";
	if (group && !first && !type) type = "s";
	if (sawType && sawType != type) {
	if (dir < 0) {dir = 1; moveOnce();}
	break;
	}

	if (type) sawType = type;
	if (dir > 0 && !moveOnce(!first)) break;
	}
	}
	var result = skipAtomic(doc, Pos(line, ch), pos, origDir, true);
	if (!possible) result.hitSide = true;
	return result;
	}

	// For relative vertical movement. Dir may be -1 or 1. Unit can be
	// "page" or "line". The resulting position will have a hitSide=true
	// property if it reached the end of the document.
	function findPosV(cm, pos, dir, unit) {
	var doc = cm.doc, x = pos.left, y;
	if (unit == "page") {
	var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight \|\| document.documentElement.clientHeight);
	y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));
	} else if (unit == "line") {
	y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
	}
	for (;;) {
	var target = coordsChar(cm, x, y);
	if (!target.outside) break;
	if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }
	y += dir * 5;
	}
	return target;
	}

	// EDITOR METHODS

	// The publicly visible API. Note that methodOp(f) means
	// 'wrap f in an operation, performed on its `this` parameter'.

	// This is not the complete set of editor methods. Most of the
	// methods defined on the Doc type are also injected into
	// CodeMirror.prototype, for backwards compatibility and
	// convenience.

	CodeMirror.prototype = {
	constructor: CodeMirror,
	focus: function(){window.focus(); this.display.input.focus();},

	setOption: function(option, value) {
	var options = this.options, old = options[option];
	if (options[option] == value && option != "mode") return;
	options[option] = value;
	if (optionHandlers.hasOwnProperty(option))
	operation(this, optionHandlers[option])(this, value, old);
	},

	getOption: function(option) {return this.options[option];},
	getDoc: function() {return this.doc;},

	addKeyMap: function(map, bottom) {
	this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map));
	},
	removeKeyMap: function(map) {
	var maps = this.state.keyMaps;
	for (var i = 0; i < maps.length; ++i)
	if (maps[i] == map \|\| maps[i].name == map) {
	maps.splice(i, 1);
	return true;
	}
	},

	addOverlay: methodOp(function(spec, options) {
	var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
	if (mode.startState) throw new Error("Overlays may not be stateful.");
	this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
	this.state.modeGen++;
	regChange(this);
	}),
	removeOverlay: methodOp(function(spec) {
	var overlays = this.state.overlays;
	for (var i = 0; i < overlays.length; ++i) {
	var cur = overlays[i].modeSpec;
	if (cur == spec \|\| typeof spec == "string" && cur.name == spec) {
	overlays.splice(i, 1);
	this.state.modeGen++;
	regChange(this);
	return;
	}
	}
	}),

	indentLine: methodOp(function(n, dir, aggressive) {
	if (typeof dir != "string" && typeof dir != "number") {
	if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
	else dir = dir ? "add" : "subtract";
	}
	if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
	}),
	indentSelection: methodOp(function(how) {
	var ranges = this.doc.sel.ranges, end = -1;
	for (var i = 0; i < ranges.length; i++) {
	var range = ranges[i];
	if (!range.empty()) {
	var from = range.from(), to = range.to();
	var start = Math.max(end, from.line);
	end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
	for (var j = start; j < end; ++j)
	indentLine(this, j, how);
	var newRanges = this.doc.sel.ranges;
	if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
	replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll);
	} else if (range.head.line > end) {
	indentLine(this, range.head.line, how, true);
	end = range.head.line;
	if (i == this.doc.sel.primIndex) ensureCursorVisible(this);
	}
	}
	}),

	// Fetch the parser token for a given character. Useful for hacks
	// that want to inspect the mode state (say, for completion).
	getTokenAt: function(pos, precise) {
	return takeToken(this, pos, precise);
	},

	getLineTokens: function(line, precise) {
	return takeToken(this, Pos(line), precise, true);
	},

	getTokenTypeAt: function(pos) {
	pos = clipPos(this.doc, pos);
	var styles = getLineStyles(this, getLine(this.doc, pos.line));
	var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
	var type;
	if (ch == 0) type = styles[2];
	else for (;;) {
	var mid = (before + after) >> 1;
	if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;
	else if (styles[mid * 2 + 1] < ch) before = mid + 1;
	else { type = styles[mid * 2 + 2]; break; }
	}
	var cut = type ? type.indexOf("cm-overlay ") : -1;
	return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1);
	},

	getModeAt: function(pos) {
	var mode = this.doc.mode;
	if (!mode.innerMode) return mode;
	return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;
	},

	getHelper: function(pos, type) {
	return this.getHelpers(pos, type)[0];
	},

	getHelpers: function(pos, type) {
	var found = [];
	if (!helpers.hasOwnProperty(type)) return found;
	var help = helpers[type], mode = this.getModeAt(pos);
	if (typeof mode[type] == "string") {
	if (help[mode[type]]) found.push(help[mode[type]]);
	} else if (mode[type]) {
	for (var i = 0; i < mode[type].length; i++) {
	var val = help[mode[type][i]];
	if (val) found.push(val);
	}
	} else if (mode.helperType && help[mode.helperType]) {
	found.push(help[mode.helperType]);
	} else if (help[mode.name]) {
	found.push(help[mode.name]);
	}
	for (var i = 0; i < help._global.length; i++) {
	var cur = help._global[i];
	if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
	found.push(cur.val);
	}
	return found;
	},

	getStateAfter: function(line, precise) {
	var doc = this.doc;
	line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
	return getStateBefore(this, line + 1, precise);
	},

	cursorCoords: function(start, mode) {
	var pos, range = this.doc.sel.primary();
	if (start == null) pos = range.head;
	else if (typeof start == "object") pos = clipPos(this.doc, start);
	else pos = start ? range.from() : range.to();
	return cursorCoords(this, pos, mode \|\| "page");
	},

	charCoords: function(pos, mode) {
	return charCoords(this, clipPos(this.doc, pos), mode \|\| "page");
	},

	coordsChar: function(coords, mode) {
	coords = fromCoordSystem(this, coords, mode \|\| "page");
	return coordsChar(this, coords.left, coords.top);
	},

	lineAtHeight: function(height, mode) {
	height = fromCoordSystem(this, {top: height, left: 0}, mode \|\| "page").top;
	return lineAtHeight(this.doc, height + this.display.viewOffset);
	},
	heightAtLine: function(line, mode) {
	var end = false, lineObj;
	if (typeof line == "number") {
	var last = this.doc.first + this.doc.size - 1;
	if (line < this.doc.first) line = this.doc.first;
	else if (line > last) { line = last; end = true; }
	lineObj = getLine(this.doc, line);
	} else {
	lineObj = line;
	}
	return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode \|\| "page").top +
	(end ? this.doc.height - heightAtLine(lineObj) : 0);
	},

	defaultTextHeight: function() { return textHeight(this.display); },
	defaultCharWidth: function() { return charWidth(this.display); },

	setGutterMarker: methodOp(function(line, gutterID, value) {
	return changeLine(this.doc, line, "gutter", function(line) {
	var markers = line.gutterMarkers \|\| (line.gutterMarkers = {});
	markers[gutterID] = value;
	if (!value && isEmpty(markers)) line.gutterMarkers = null;
	return true;
	});
	}),

	clearGutter: methodOp(function(gutterID) {
	var cm = this, doc = cm.doc, i = doc.first;
	doc.iter(function(line) {
	if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
	line.gutterMarkers[gutterID] = null;
	regLineChange(cm, i, "gutter");
	if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
	}
	++i;
	});
	}),

	lineInfo: function(line) {
	if (typeof line == "number") {
	if (!isLine(this.doc, line)) return null;
	var n = line;
	line = getLine(this.doc, line);
	if (!line) return null;
	} else {
	var n = lineNo(line);
	if (n == null) return null;
	}
	return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
	textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
	widgets: line.widgets};
	},

	getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};},

	addWidget: function(pos, node, scroll, vert, horiz) {
	var display = this.display;
	pos = cursorCoords(this, clipPos(this.doc, pos));
	var top = pos.bottom, left = pos.left;
	node.style.position = "absolute";
	node.setAttribute("cm-ignore-events", "true");
	this.display.input.setUneditable(node);
	display.sizer.appendChild(node);
	if (vert == "over") {
	top = pos.top;
	} else if (vert == "above" \|\| vert == "near") {
	var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
	hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
	// Default to positioning above (if specified and possible); otherwise default to positioning below
	if ((vert == 'above' \|\| pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
	top = pos.top - node.offsetHeight;
	else if (pos.bottom + node.offsetHeight <= vspace)
	top = pos.bottom;
	if (left + node.offsetWidth > hspace)
	left = hspace - node.offsetWidth;
	}
	node.style.top = top + "px";
	node.style.left = node.style.right = "";
	if (horiz == "right") {
	left = display.sizer.clientWidth - node.offsetWidth;
	node.style.right = "0px";
	} else {
	if (horiz == "left") left = 0;
	else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
	node.style.left = left + "px";
	}
	if (scroll)
	scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
	},

	triggerOnKeyDown: methodOp(onKeyDown),
	triggerOnKeyPress: methodOp(onKeyPress),
	triggerOnKeyUp: onKeyUp,

	execCommand: function(cmd) {
	if (commands.hasOwnProperty(cmd))
	return commands[cmd].call(null, this);
	},

	triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),

	findPosH: function(from, amount, unit, visually) {
	var dir = 1;
	if (amount < 0) { dir = -1; amount = -amount; }
	for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
	cur = findPosH(this.doc, cur, dir, unit, visually);
	if (cur.hitSide) break;
	}
	return cur;
	},

	moveH: methodOp(function(dir, unit) {
	var cm = this;
	cm.extendSelectionsBy(function(range) {
	if (cm.display.shift \|\| cm.doc.extend \|\| range.empty())
	return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually);
	else
	return dir < 0 ? range.from() : range.to();
	}, sel_move);
	}),

	deleteH: methodOp(function(dir, unit) {
	var sel = this.doc.sel, doc = this.doc;
	if (sel.somethingSelected())
	doc.replaceSelection("", null, "+delete");
	else
	deleteNearSelection(this, function(range) {
	var other = findPosH(doc, range.head, dir, unit, false);
	return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};
	});
	}),

	findPosV: function(from, amount, unit, goalColumn) {
	var dir = 1, x = goalColumn;
	if (amount < 0) { dir = -1; amount = -amount; }
	for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
	var coords = cursorCoords(this, cur, "div");
	if (x == null) x = coords.left;
	else coords.left = x;
	cur = findPosV(this, coords, dir, unit);
	if (cur.hitSide) break;
	}
	return cur;
	},

	moveV: methodOp(function(dir, unit) {
	var cm = this, doc = this.doc, goals = [];
	var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected();
	doc.extendSelectionsBy(function(range) {
	if (collapse)
	return dir < 0 ? range.from() : range.to();
	var headPos = cursorCoords(cm, range.head, "div");
	if (range.goalColumn != null) headPos.left = range.goalColumn;
	goals.push(headPos.left);
	var pos = findPosV(cm, headPos, dir, unit);
	if (unit == "page" && range == doc.sel.primary())
	addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top);
	return pos;
	}, sel_move);
	if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)
	doc.sel.ranges[i].goalColumn = goals[i];
	}),

	// Find the word at the given position (as returned by coordsChar).
	findWordAt: function(pos) {
	var doc = this.doc, line = getLine(doc, pos.line).text;
	var start = pos.ch, end = pos.ch;
	if (line) {
	var helper = this.getHelper(pos, "wordChars");
	if ((pos.xRel < 0 \|\| end == line.length) && start) --start; else ++end;
	var startChar = line.charAt(start);
	var check = isWordChar(startChar, helper)
	? function(ch) { return isWordChar(ch, helper); }
	: /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);}
	: function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
	while (start > 0 && check(line.charAt(start - 1))) --start;
	while (end < line.length && check(line.charAt(end))) ++end;
	}
	return new Range(Pos(pos.line, start), Pos(pos.line, end));
	},

	toggleOverwrite: function(value) {
	if (value != null && value == this.state.overwrite) return;
	if (this.state.overwrite = !this.state.overwrite)
	addClass(this.display.cursorDiv, "CodeMirror-overwrite");
	else
	rmClass(this.display.cursorDiv, "CodeMirror-overwrite");

	signal(this, "overwriteToggle", this, this.state.overwrite);
	},
	hasFocus: function() { return this.display.input.getField() == activeElt(); },

	scrollTo: methodOp(function(x, y) {
	if (x != null \|\| y != null) resolveScrollToPos(this);
	if (x != null) this.curOp.scrollLeft = x;
	if (y != null) this.curOp.scrollTop = y;
	}),
	getScrollInfo: function() {
	var scroller = this.display.scroller;
	return {left: scroller.scrollLeft, top: scroller.scrollTop,
	height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
	width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
	clientHeight: displayHeight(this), clientWidth: displayWidth(this)};
	},

	scrollIntoView: methodOp(function(range, margin) {
	if (range == null) {
	range = {from: this.doc.sel.primary().head, to: null};
	if (margin == null) margin = this.options.cursorScrollMargin;
	} else if (typeof range == "number") {
	range = {from: Pos(range, 0), to: null};
	} else if (range.from == null) {
	range = {from: range, to: null};
	}
	if (!range.to) range.to = range.from;
	range.margin = margin \|\| 0;

	if (range.from.line != null) {
	resolveScrollToPos(this);
	this.curOp.scrollToPos = range;
	} else {
	var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left),
	Math.min(range.from.top, range.to.top) - range.margin,
	Math.max(range.from.right, range.to.right),
	Math.max(range.from.bottom, range.to.bottom) + range.margin);
	this.scrollTo(sPos.scrollLeft, sPos.scrollTop);
	}
	}),

	setSize: methodOp(function(width, height) {
	var cm = this;
	function interpret(val) {
	return typeof val == "number" \|\| /^\d+$/.test(String(val)) ? val + "px" : val;
	}
	if (width != null) cm.display.wrapper.style.width = interpret(width);
	if (height != null) cm.display.wrapper.style.height = interpret(height);
	if (cm.options.lineWrapping) clearLineMeasurementCache(this);
	var lineNo = cm.display.viewFrom;
	cm.doc.iter(lineNo, cm.display.viewTo, function(line) {
	if (line.widgets) for (var i = 0; i < line.widgets.length; i++)
	if (line.widgets[i].noHScroll) { regLineChange(cm, lineNo, "widget"); break; }
	++lineNo;
	});
	cm.curOp.forceUpdate = true;
	signal(cm, "refresh", this);
	}),

	operation: function(f){return runInOp(this, f);},

	refresh: methodOp(function() {
	var oldHeight = this.display.cachedTextHeight;
	regChange(this);
	this.curOp.forceUpdate = true;
	clearCaches(this);
	this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop);
	updateGutterSpace(this);
	if (oldHeight == null \|\| Math.abs(oldHeight - textHeight(this.display)) > .5)
	estimateLineHeights(this);
	signal(this, "refresh", this);
	}),

	swapDoc: methodOp(function(doc) {
	var old = this.doc;
	old.cm = null;
	attachDoc(this, doc);
	clearCaches(this);
	this.display.input.reset();
	this.scrollTo(doc.scrollLeft, doc.scrollTop);
	this.curOp.forceScroll = true;
	signalLater(this, "swapDoc", this, old);
	return old;
	}),

	getInputField: function(){return this.display.input.getField();},
	getWrapperElement: function(){return this.display.wrapper;},
	getScrollerElement: function(){return this.display.scroller;},
	getGutterElement: function(){return this.display.gutters;}
	};
	eventMixin(CodeMirror);

	// OPTION DEFAULTS

	// The default configuration options.
	var defaults = CodeMirror.defaults = {};
	// Functions to run when options are changed.
	var optionHandlers = CodeMirror.optionHandlers = {};

	function option(name, deflt, handle, notOnInit) {
	CodeMirror.defaults[name] = deflt;
	if (handle) optionHandlers[name] =
	notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
	}

	// Passed to option handlers when there is no old value.
	var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};

	// These two are, on init, called from the constructor because they
	// have to be initialized before the editor can start at all.
	option("value", "", function(cm, val) {
	cm.setValue(val);
	}, true);
	option("mode", null, function(cm, val) {
	cm.doc.modeOption = val;
	loadMode(cm);
	}, true);

	option("indentUnit", 2, loadMode, true);
	option("indentWithTabs", false);
	option("smartIndent", true);
	option("tabSize", 4, function(cm) {
	resetModeState(cm);
	clearCaches(cm);
	regChange(cm);
	}, true);
	option("lineSeparator", null, function(cm, val) {
	cm.doc.lineSep = val;
	if (!val) return;
	var newBreaks = [], lineNo = cm.doc.first;
	cm.doc.iter(function(line) {
	for (var pos = 0;;) {
	var found = line.text.indexOf(val, pos);
	if (found == -1) break;
	pos = found + val.length;
	newBreaks.push(Pos(lineNo, found));
	}
	lineNo++;
	});
	for (var i = newBreaks.length - 1; i >= 0; i--)
	replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length))
	});
	option("specialChars", /[\t\u0000-\u0019\u00ad\u200b-\u200f\u2028\u2029\ufeff]/g, function(cm, val, old) {
	cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "\|\t"), "g");
	if (old != CodeMirror.Init) cm.refresh();
	});
	option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true);
	option("electricChars", true);
	option("inputStyle", mobile ? "contenteditable" : "textarea", function() {
	throw new Error("inputStyle can not (yet) be changed in a running editor"); // FIXME
	}, true);
	option("rtlMoveVisually", !windows);
	option("wholeLineUpdateBefore", true);

	option("theme", "default", function(cm) {
	themeChanged(cm);
	guttersChanged(cm);
	}, true);
	option("keyMap", "default", function(cm, val, old) {
	var next = getKeyMap(val);
	var prev = old != CodeMirror.Init && getKeyMap(old);
	if (prev && prev.detach) prev.detach(cm, next);
	if (next.attach) next.attach(cm, prev \|\| null);
	});
	option("extraKeys", null);

	option("lineWrapping", false, wrappingChanged, true);
	option("gutters", [], function(cm) {
	setGuttersForLineNumbers(cm.options);
	guttersChanged(cm);
	}, true);
	option("fixedGutter", true, function(cm, val) {
	cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
	cm.refresh();
	}, true);
	option("coverGutterNextToScrollbar", false, function(cm) {updateScrollbars(cm);}, true);
	option("scrollbarStyle", "native", function(cm) {
	initScrollbars(cm);
	updateScrollbars(cm);
	cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);
	cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);
	}, true);
	option("lineNumbers", false, function(cm) {
	setGuttersForLineNumbers(cm.options);
	guttersChanged(cm);
	}, true);
	option("firstLineNumber", 1, guttersChanged, true);
	option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
	option("showCursorWhenSelecting", false, updateSelection, true);

	option("resetSelectionOnContextMenu", true);
	option("lineWiseCopyCut", true);

	option("readOnly", false, function(cm, val) {
	if (val == "nocursor") {
	onBlur(cm);
	cm.display.input.blur();
	cm.display.disabled = true;
	} else {
	cm.display.disabled = false;
	}
	cm.display.input.readOnlyChanged(val)
	});
	option("disableInput", false, function(cm, val) {if (!val) cm.display.input.reset();}, true);
	option("dragDrop", true, dragDropChanged);
	option("allowDropFileTypes", null);

	option("cursorBlinkRate", 530);
	option("cursorScrollMargin", 0);
	option("cursorHeight", 1, updateSelection, true);
	option("singleCursorHeightPerLine", true, updateSelection, true);
	option("workTime", 100);
	option("workDelay", 100);
	option("flattenSpans", true, resetModeState, true);
	option("addModeClass", false, resetModeState, true);
	option("pollInterval", 100);
	option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;});
	option("historyEventDelay", 1250);
	option("viewportMargin", 10, function(cm){cm.refresh();}, true);
	option("maxHighlightLength", 10000, resetModeState, true);
	option("moveInputWithCursor", true, function(cm, val) {
	if (!val) cm.display.input.resetPosition();
	});

	option("tabindex", null, function(cm, val) {
	cm.display.input.getField().tabIndex = val \|\| "";
	});
	option("autofocus", null);

	// MODE DEFINITION AND QUERYING

	// Known modes, by name and by MIME
	var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};

	// Extra arguments are stored as the mode's dependencies, which is
	// used by (legacy) mechanisms like loadmode.js to automatically
	// load a mode. (Preferred mechanism is the require/define calls.)
	CodeMirror.defineMode = function(name, mode) {
	if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
	if (arguments.length > 2)
	mode.dependencies = Array.prototype.slice.call(arguments, 2);
	modes[name] = mode;
	};

	CodeMirror.defineMIME = function(mime, spec) {
	mimeModes[mime] = spec;
	};

	// Given a MIME type, a {name, ...options} config object, or a name
	// string, return a mode config object.
	CodeMirror.resolveMode = function(spec) {
	if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
	spec = mimeModes[spec];
	} else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
	var found = mimeModes[spec.name];
	if (typeof found == "string") found = {name: found};
	spec = createObj(found, spec);
	spec.name = found.name;
	} else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
	return CodeMirror.resolveMode("application/xml");
	}
	if (typeof spec == "string") return {name: spec};
	else return spec \|\| {name: "null"};
	};

	// Given a mode spec (anything that resolveMode accepts), find and
	// initialize an actual mode object.
	CodeMirror.getMode = function(options, spec) {
	var spec = CodeMirror.resolveMode(spec);
	var mfactory = modes[spec.name];
	if (!mfactory) return CodeMirror.getMode(options, "text/plain");
	var modeObj = mfactory(options, spec);
	if (modeExtensions.hasOwnProperty(spec.name)) {
	var exts = modeExtensions[spec.name];
	for (var prop in exts) {
	if (!exts.hasOwnProperty(prop)) continue;
	if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
	modeObj[prop] = exts[prop];
	}
	}
	modeObj.name = spec.name;
	if (spec.helperType) modeObj.helperType = spec.helperType;
	if (spec.modeProps) for (var prop in spec.modeProps)
	modeObj[prop] = spec.modeProps[prop];

	return modeObj;
	};

	// Minimal default mode.
	CodeMirror.defineMode("null", function() {
	return {token: function(stream) {stream.skipToEnd();}};
	});
	CodeMirror.defineMIME("text/plain", "null");

	// This can be used to attach properties to mode objects from
	// outside the actual mode definition.
	var modeExtensions = CodeMirror.modeExtensions = {};
	CodeMirror.extendMode = function(mode, properties) {
	var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
	copyObj(properties, exts);
	};

	// EXTENSIONS

	CodeMirror.defineExtension = function(name, func) {
	CodeMirror.prototype[name] = func;
	};
	CodeMirror.defineDocExtension = function(name, func) {
	Doc.prototype[name] = func;
	};
	CodeMirror.defineOption = option;

	var initHooks = [];
	CodeMirror.defineInitHook = function(f) {initHooks.push(f);};

	var helpers = CodeMirror.helpers = {};
	CodeMirror.registerHelper = function(type, name, value) {
	if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []};
	helpers[type][name] = value;
	};
	CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
	CodeMirror.registerHelper(type, name, value);
	helpers[type]._global.push({pred: predicate, val: value});
	};

	// MODE STATE HANDLING

	// Utility functions for working with state. Exported because nested
	// modes need to do this for their inner modes.

	var copyState = CodeMirror.copyState = function(mode, state) {
	if (state === true) return state;
	if (mode.copyState) return mode.copyState(state);
	var nstate = {};
	for (var n in state) {
	var val = state[n];
	if (val instanceof Array) val = val.concat([]);
	nstate[n] = val;
	}
	return nstate;
	};

	var startState = CodeMirror.startState = function(mode, a1, a2) {
	return mode.startState ? mode.startState(a1, a2) : true;
	};

	// Given a mode and a state (for that mode), find the inner mode and
	// state at the position that the state refers to.
	CodeMirror.innerMode = function(mode, state) {
	while (mode.innerMode) {
	var info = mode.innerMode(state);
	if (!info \|\| info.mode == mode) break;
	state = info.state;
	mode = info.mode;
	}
	return info \|\| {mode: mode, state: state};
	};

	// STANDARD COMMANDS

	// Commands are parameter-less actions that can be performed on an
	// editor, mostly used for keybindings.
	var commands = CodeMirror.commands = {
	selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);},
	singleSelection: function(cm) {
	cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll);
	},
	killLine: function(cm) {
	deleteNearSelection(cm, function(range) {
	if (range.empty()) {
	var len = getLine(cm.doc, range.head.line).text.length;
	if (range.head.ch == len && range.head.line < cm.lastLine())
	return {from: range.head, to: Pos(range.head.line + 1, 0)};
	else
	return {from: range.head, to: Pos(range.head.line, len)};
	} else {
	return {from: range.from(), to: range.to()};
	}
	});
	},
	deleteLine: function(cm) {
	deleteNearSelection(cm, function(range) {
	return {from: Pos(range.from().line, 0),
	to: clipPos(cm.doc, Pos(range.to().line + 1, 0))};
	});
	},
	delLineLeft: function(cm) {
	deleteNearSelection(cm, function(range) {
	return {from: Pos(range.from().line, 0), to: range.from()};
	});
	},
	delWrappedLineLeft: function(cm) {
	deleteNearSelection(cm, function(range) {
	var top = cm.charCoords(range.head, "div").top + 5;
	var leftPos = cm.coordsChar({left: 0, top: top}, "div");
	return {from: leftPos, to: range.from()};
	});
	},
	delWrappedLineRight: function(cm) {
	deleteNearSelection(cm, function(range) {
	var top = cm.charCoords(range.head, "div").top + 5;
	var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
	return {from: range.from(), to: rightPos };
	});
	},
	undo: function(cm) {cm.undo();},
	redo: function(cm) {cm.redo();},
	undoSelection: function(cm) {cm.undoSelection();},
	redoSelection: function(cm) {cm.redoSelection();},
	goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
	goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
	goLineStart: function(cm) {
	cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); },
	{origin: "+move", bias: 1});
	},
	goLineStartSmart: function(cm) {
	cm.extendSelectionsBy(function(range) {
	return lineStartSmart(cm, range.head);
	}, {origin: "+move", bias: 1});
	},
	goLineEnd: function(cm) {
	cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); },
	{origin: "+move", bias: -1});
	},
	goLineRight: function(cm) {
	cm.extendSelectionsBy(function(range) {
	var top = cm.charCoords(range.head, "div").top + 5;
	return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
	}, sel_move);
	},
	goLineLeft: function(cm) {
	cm.extendSelectionsBy(function(range) {
	var top = cm.charCoords(range.head, "div").top + 5;
	return cm.coordsChar({left: 0, top: top}, "div");
	}, sel_move);
	},
	goLineLeftSmart: function(cm) {
	cm.extendSelectionsBy(function(range) {
	var top = cm.charCoords(range.head, "div").top + 5;
	var pos = cm.coordsChar({left: 0, top: top}, "div");
	if (pos.ch < cm.getLine(pos.line).search(/\S/)) return lineStartSmart(cm, range.head);
	return pos;
	}, sel_move);
	},
	goLineUp: function(cm) {cm.moveV(-1, "line");},
	goLineDown: function(cm) {cm.moveV(1, "line");},
	goPageUp: function(cm) {cm.moveV(-1, "page");},
	goPageDown: function(cm) {cm.moveV(1, "page");},
	goCharLeft: function(cm) {cm.moveH(-1, "char");},
	goCharRight: function(cm) {cm.moveH(1, "char");},
	goColumnLeft: function(cm) {cm.moveH(-1, "column");},
	goColumnRight: function(cm) {cm.moveH(1, "column");},
	goWordLeft: function(cm) {cm.moveH(-1, "word");},
	goGroupRight: function(cm) {cm.moveH(1, "group");},
	goGroupLeft: function(cm) {cm.moveH(-1, "group");},
	goWordRight: function(cm) {cm.moveH(1, "word");},
	delCharBefore: function(cm) {cm.deleteH(-1, "char");},
	delCharAfter: function(cm) {cm.deleteH(1, "char");},
	delWordBefore: function(cm) {cm.deleteH(-1, "word");},
	delWordAfter: function(cm) {cm.deleteH(1, "word");},
	delGroupBefore: function(cm) {cm.deleteH(-1, "group");},
	delGroupAfter: function(cm) {cm.deleteH(1, "group");},
	indentAuto: function(cm) {cm.indentSelection("smart");},
	indentMore: function(cm) {cm.indentSelection("add");},
	indentLess: function(cm) {cm.indentSelection("subtract");},
	insertTab: function(cm) {cm.replaceSelection("\t");},
	insertSoftTab: function(cm) {
	var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;
	for (var i = 0; i < ranges.length; i++) {
	var pos = ranges[i].from();
	var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
	spaces.push(new Array(tabSize - col % tabSize + 1).join(" "));
	}
	cm.replaceSelections(spaces);
	},
	defaultTab: function(cm) {
	if (cm.somethingSelected()) cm.indentSelection("add");
	else cm.execCommand("insertTab");
	},
	transposeChars: function(cm) {
	runInOp(cm, function() {
	var ranges = cm.listSelections(), newSel = [];
	for (var i = 0; i < ranges.length; i++) {
	var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
	if (line) {
	if (cur.ch == line.length) cur = new Pos(cur.line, cur.ch - 1);
	if (cur.ch > 0) {
	cur = new Pos(cur.line, cur.ch + 1);
	cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
	Pos(cur.line, cur.ch - 2), cur, "+transpose");
	} else if (cur.line > cm.doc.first) {
	var prev = getLine(cm.doc, cur.line - 1).text;
	if (prev)
	cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +
	prev.charAt(prev.length - 1),
	Pos(cur.line - 1, prev.length - 1), Pos(cur.line, 1), "+transpose");
	}
	}
	newSel.push(new Range(cur, cur));
	}
	cm.setSelections(newSel);
	});
	},
	newlineAndIndent: function(cm) {
	runInOp(cm, function() {
	var len = cm.listSelections().length;
	for (var i = 0; i < len; i++) {
	var range = cm.listSelections()[i];
	cm.replaceRange(cm.doc.lineSeparator(), range.anchor, range.head, "+input");
	cm.indentLine(range.from().line + 1, null, true);
	}
	ensureCursorVisible(cm);
	});
	},
	toggleOverwrite: function(cm) {cm.toggleOverwrite();}
	};


	// STANDARD KEYMAPS

	var keyMap = CodeMirror.keyMap = {};

	keyMap.basic = {
	"Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
	"End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
	"Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
	"Tab": "defaultTab", "Shift-Tab": "indentAuto",
	"Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
	"Esc": "singleSelection"
	};
	// Note that the save and find-related commands aren't defined by
	// default. User code or addons can define them. Unknown commands
	// are simply ignored.
	keyMap.pcDefault = {
	"Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
	"Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
	"Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
	"Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
	"Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
	"Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
	"Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
	fallthrough: "basic"
	};
	// Very basic readline/emacs-style bindings, which are standard on Mac.
	keyMap.emacsy = {
	"Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
	"Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
	"Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
	"Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
	};
	keyMap.macDefault = {
	"Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
	"Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
	"Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
	"Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
	"Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
	"Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
	"Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
	fallthrough: ["basic", "emacsy"]
	};
	keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;

	// KEYMAP DISPATCH

	function normalizeKeyName(name) {
	var parts = name.split(/-(?!$)/), name = parts[parts.length - 1];
	var alt, ctrl, shift, cmd;
	for (var i = 0; i < parts.length - 1; i++) {
	var mod = parts[i];
	if (/^(cmd\|meta\|m)$/i.test(mod)) cmd = true;
	else if (/^a(lt)?$/i.test(mod)) alt = true;
	else if (/^(c\|ctrl\|control)$/i.test(mod)) ctrl = true;
	else if (/^s(hift)$/i.test(mod)) shift = true;
	else throw new Error("Unrecognized modifier name: " + mod);
	}
	if (alt) name = "Alt-" + name;
	if (ctrl) name = "Ctrl-" + name;
	if (cmd) name = "Cmd-" + name;
	if (shift) name = "Shift-" + name;
	return name;
	}

	// This is a kludge to keep keymaps mostly working as raw objects
	// (backwards compatibility) while at the same time support features
	// like normalization and multi-stroke key bindings. It compiles a
	// new normalized keymap, and then updates the old object to reflect
	// this.
	CodeMirror.normalizeKeyMap = function(keymap) {
	var copy = {};
	for (var keyname in keymap) if (keymap.hasOwnProperty(keyname)) {
	var value = keymap[keyname];
	if (/^(name\|fallthrough\|(de\|at)tach)$/.test(keyname)) continue;
	if (value == "...") { delete keymap[keyname]; continue; }

	var keys = map(keyname.split(" "), normalizeKeyName);
	for (var i = 0; i < keys.length; i++) {
	var val, name;
	if (i == keys.length - 1) {
	name = keys.join(" ");
	val = value;
	} else {
	name = keys.slice(0, i + 1).join(" ");
	val = "...";
	}
	var prev = copy[name];
	if (!prev) copy[name] = val;
	else if (prev != val) throw new Error("Inconsistent bindings for " + name);
	}
	delete keymap[keyname];
	}
	for (var prop in copy) keymap[prop] = copy[prop];
	return keymap;
	};

	var lookupKey = CodeMirror.lookupKey = function(key, map, handle, context) {
	map = getKeyMap(map);
	var found = map.call ? map.call(key, context) : map[key];
	if (found === false) return "nothing";
	if (found === "...") return "multi";
	if (found != null && handle(found)) return "handled";

	if (map.fallthrough) {
	if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
	return lookupKey(key, map.fallthrough, handle, context);
	for (var i = 0; i < map.fallthrough.length; i++) {
	var result = lookupKey(key, map.fallthrough[i], handle, context);
	if (result) return result;
	}
	}
	};

	// Modifier key presses don't count as 'real' key presses for the
	// purpose of keymap fallthrough.
	var isModifierKey = CodeMirror.isModifierKey = function(value) {
	var name = typeof value == "string" ? value : keyNames[value.keyCode];
	return name == "Ctrl" \|\| name == "Alt" \|\| name == "Shift" \|\| name == "Mod";
	};

	// Look up the name of a key as indicated by an event object.
	var keyName = CodeMirror.keyName = function(event, noShift) {
	if (presto && event.keyCode == 34 && event["char"]) return false;
	var base = keyNames[event.keyCode], name = base;
	if (name == null \|\| event.altGraphKey) return false;
	if (event.altKey && base != "Alt") name = "Alt-" + name;
	if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name;
	if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") name = "Cmd-" + name;
	if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name;
	return name;
	};

	function getKeyMap(val) {
	return typeof val == "string" ? keyMap[val] : val;
	}

	// FROMTEXTAREA

	CodeMirror.fromTextArea = function(textarea, options) {
	options = options ? copyObj(options) : {};
	options.value = textarea.value;
	if (!options.tabindex && textarea.tabIndex)
	options.tabindex = textarea.tabIndex;
	if (!options.placeholder && textarea.placeholder)
	options.placeholder = textarea.placeholder;
	// Set autofocus to true if this textarea is focused, or if it has
	// autofocus and no other element is focused.
	if (options.autofocus == null) {
	var hasFocus = activeElt();
	options.autofocus = hasFocus == textarea \|\|
	textarea.getAttribute("autofocus") != null && hasFocus == document.body;
	}

	function save() {textarea.value = cm.getValue();}
	if (textarea.form) {
	on(textarea.form, "submit", save);
	// Deplorable hack to make the submit method do the right thing.
	if (!options.leaveSubmitMethodAlone) {
	var form = textarea.form, realSubmit = form.submit;
	try {
	var wrappedSubmit = form.submit = function() {
	save();
	form.submit = realSubmit;
	form.submit();
	form.submit = wrappedSubmit;
	};
	} catch(e) {}
	}
	}

	options.finishInit = function(cm) {
	cm.save = save;
	cm.getTextArea = function() { return textarea; };
	cm.toTextArea = function() {
	cm.toTextArea = isNaN; // Prevent this from being ran twice
	save();
	textarea.parentNode.removeChild(cm.getWrapperElement());
	textarea.style.display = "";
	if (textarea.form) {
	off(textarea.form, "submit", save);
	if (typeof textarea.form.submit == "function")
	textarea.form.submit = realSubmit;
	}
	};
	};

	textarea.style.display = "none";
	var cm = CodeMirror(function(node) {
	textarea.parentNode.insertBefore(node, textarea.nextSibling);
	}, options);
	return cm;
	};

	// STRING STREAM

	// Fed to the mode parsers, provides helper functions to make
	// parsers more succinct.

	var StringStream = CodeMirror.StringStream = function(string, tabSize) {
	this.pos = this.start = 0;
	this.string = string;
	this.tabSize = tabSize \|\| 8;
	this.lastColumnPos = this.lastColumnValue = 0;
	this.lineStart = 0;
	};

	StringStream.prototype = {
	eol: function() {return this.pos >= this.string.length;},
	sol: function() {return this.pos == this.lineStart;},
	peek: function() {return this.string.charAt(this.pos) \|\| undefined;},
	next: function() {
	if (this.pos < this.string.length)
	return this.string.charAt(this.pos++);
	},
	eat: function(match) {
	var ch = this.string.charAt(this.pos);
	if (typeof match == "string") var ok = ch == match;
	else var ok = ch && (match.test ? match.test(ch) : match(ch));
	if (ok) {++this.pos; return ch;}
	},
	eatWhile: function(match) {
	var start = this.pos;
	while (this.eat(match)){}
	return this.pos > start;
	},
	eatSpace: function() {
	var start = this.pos;
	while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
	return this.pos > start;
	},
	skipToEnd: function() {this.pos = this.string.length;},
	skipTo: function(ch) {
	var found = this.string.indexOf(ch, this.pos);
	if (found > -1) {this.pos = found; return true;}
	},
	backUp: function(n) {this.pos -= n;},
	column: function() {
	if (this.lastColumnPos < this.start) {
	this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
	this.lastColumnPos = this.start;
	}
	return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
	},
	indentation: function() {
	return countColumn(this.string, null, this.tabSize) -
	(this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
	},
	match: function(pattern, consume, caseInsensitive) {
	if (typeof pattern == "string") {
	var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
	var substr = this.string.substr(this.pos, pattern.length);
	if (cased(substr) == cased(pattern)) {
	if (consume !== false) this.pos += pattern.length;
	return true;
	}
	} else {
	var match = this.string.slice(this.pos).match(pattern);
	if (match && match.index > 0) return null;
	if (match && consume !== false) this.pos += match[0].length;
	return match;
	}
	},
	current: function(){return this.string.slice(this.start, this.pos);},
	hideFirstChars: function(n, inner) {
	this.lineStart += n;
	try { return inner(); }
	finally { this.lineStart -= n; }
	}
	};

	// TEXTMARKERS

	// Created with markText and setBookmark methods. A TextMarker is a
	// handle that can be used to clear or find a marked position in the
	// document. Line objects hold arrays (markedSpans) containing
	// {from, to, marker} object pointing to such marker objects, and
	// indicating that such a marker is present on that line. Multiple
	// lines may point to the same marker when it spans across lines.
	// The spans will have null for their from/to properties when the
	// marker continues beyond the start/end of the line. Markers have
	// links back to the lines they currently touch.

	var nextMarkerId = 0;

	var TextMarker = CodeMirror.TextMarker = function(doc, type) {
	this.lines = [];
	this.type = type;
	this.doc = doc;
	this.id = ++nextMarkerId;
	};
	eventMixin(TextMarker);

	// Clear the marker.
	TextMarker.prototype.clear = function() {
	if (this.explicitlyCleared) return;
	var cm = this.doc.cm, withOp = cm && !cm.curOp;
	if (withOp) startOperation(cm);
	if (hasHandler(this, "clear")) {
	var found = this.find();
	if (found) signalLater(this, "clear", found.from, found.to);
	}
	var min = null, max = null;
	for (var i = 0; i < this.lines.length; ++i) {
	var line = this.lines[i];
	var span = getMarkedSpanFor(line.markedSpans, this);
	if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text");
	else if (cm) {
	if (span.to != null) max = lineNo(line);
	if (span.from != null) min = lineNo(line);
	}
	line.markedSpans = removeMarkedSpan(line.markedSpans, span);
	if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)
	updateLineHeight(line, textHeight(cm.display));
	}
	if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {
	var visual = visualLine(this.lines[i]), len = lineLength(visual);
	if (len > cm.display.maxLineLength) {
	cm.display.maxLine = visual;
	cm.display.maxLineLength = len;
	cm.display.maxLineChanged = true;
	}
	}

	if (min != null && cm && this.collapsed) regChange(cm, min, max + 1);
	this.lines.length = 0;
	this.explicitlyCleared = true;
	if (this.atomic && this.doc.cantEdit) {
	this.doc.cantEdit = false;
	if (cm) reCheckSelection(cm.doc);
	}
	if (cm) signalLater(cm, "markerCleared", cm, this);
	if (withOp) endOperation(cm);
	if (this.parent) this.parent.clear();
	};

	// Find the position of the marker in the document. Returns a {from,
	// to} object by default. Side can be passed to get a specific side
	// -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
	// Pos objects returned contain a line object, rather than a line
	// number (used to prevent looking up the same line twice).
	TextMarker.prototype.find = function(side, lineObj) {
	if (side == null && this.type == "bookmark") side = 1;
	var from, to;
	for (var i = 0; i < this.lines.length; ++i) {
	var line = this.lines[i];
	var span = getMarkedSpanFor(line.markedSpans, this);
	if (span.from != null) {
	from = Pos(lineObj ? line : lineNo(line), span.from);
	if (side == -1) return from;
	}
	if (span.to != null) {
	to = Pos(lineObj ? line : lineNo(line), span.to);
	if (side == 1) return to;
	}
	}
	return from && {from: from, to: to};
	};

	// Signals that the marker's widget changed, and surrounding layout
	// should be recomputed.
	TextMarker.prototype.changed = function() {
	var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
	if (!pos \|\| !cm) return;
	runInOp(cm, function() {
	var line = pos.line, lineN = lineNo(pos.line);
	var view = findViewForLine(cm, lineN);
	if (view) {
	clearLineMeasurementCacheFor(view);
	cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
	}
	cm.curOp.updateMaxLine = true;
	if (!lineIsHidden(widget.doc, line) && widget.height != null) {
	var oldHeight = widget.height;
	widget.height = null;
	var dHeight = widgetHeight(widget) - oldHeight;
	if (dHeight)
	updateLineHeight(line, line.height + dHeight);
	}
	});
	};

	TextMarker.prototype.attachLine = function(line) {
	if (!this.lines.length && this.doc.cm) {
	var op = this.doc.cm.curOp;
	if (!op.maybeHiddenMarkers \|\| indexOf(op.maybeHiddenMarkers, this) == -1)
	(op.maybeUnhiddenMarkers \|\| (op.maybeUnhiddenMarkers = [])).push(this);
	}
	this.lines.push(line);
	};
	TextMarker.prototype.detachLine = function(line) {
	this.lines.splice(indexOf(this.lines, line), 1);
	if (!this.lines.length && this.doc.cm) {
	var op = this.doc.cm.curOp;
	(op.maybeHiddenMarkers \|\| (op.maybeHiddenMarkers = [])).push(this);
	}
	};

	// Collapsed markers have unique ids, in order to be able to order
	// them, which is needed for uniquely determining an outer marker
	// when they overlap (they may nest, but not partially overlap).
	var nextMarkerId = 0;

	// Create a marker, wire it up to the right lines, and
	function markText(doc, from, to, options, type) {
	// Shared markers (across linked documents) are handled separately
	// (markTextShared will call out to this again, once per
	// document).
	if (options && options.shared) return markTextShared(doc, from, to, options, type);
	// Ensure we are in an operation.
	if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);

	var marker = new TextMarker(doc, type), diff = cmp(from, to);
	if (options) copyObj(options, marker, false);
	// Don't connect empty markers unless clearWhenEmpty is false
	if (diff > 0 \|\| diff == 0 && marker.clearWhenEmpty !== false)
	return marker;
	if (marker.replacedWith) {
	// Showing up as a widget implies collapsed (widget replaces text)
	marker.collapsed = true;
	marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");
	if (!options.handleMouseEvents) marker.widgetNode.setAttribute("cm-ignore-events", "true");
	if (options.insertLeft) marker.widgetNode.insertLeft = true;
	}
	if (marker.collapsed) {
	if (conflictingCollapsedRange(doc, from.line, from, to, marker) \|\|
	from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
	throw new Error("Inserting collapsed marker partially overlapping an existing one");
	sawCollapsedSpans = true;
	}

	if (marker.addToHistory)
	addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN);

	var curLine = from.line, cm = doc.cm, updateMaxLine;
	doc.iter(curLine, to.line + 1, function(line) {
	if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
	updateMaxLine = true;
	if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);
	addMarkedSpan(line, new MarkedSpan(marker,
	curLine == from.line ? from.ch : null,
	curLine == to.line ? to.ch : null));
	++curLine;
	});
	// lineIsHidden depends on the presence of the spans, so needs a second pass
	if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {
	if (lineIsHidden(doc, line)) updateLineHeight(line, 0);
	});

	if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); });

	if (marker.readOnly) {
	sawReadOnlySpans = true;
	if (doc.history.done.length \|\| doc.history.undone.length)
	doc.clearHistory();
	}
	if (marker.collapsed) {
	marker.id = ++nextMarkerId;
	marker.atomic = true;
	}
	if (cm) {
	// Sync editor state
	if (updateMaxLine) cm.curOp.updateMaxLine = true;
	if (marker.collapsed)
	regChange(cm, from.line, to.line + 1);
	else if (marker.className \|\| marker.title \|\| marker.startStyle \|\| marker.endStyle \|\| marker.css)
	for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text");
	if (marker.atomic) reCheckSelection(cm.doc);
	signalLater(cm, "markerAdded", cm, marker);
	}
	return marker;
	}

	// SHARED TEXTMARKERS

	// A shared marker spans multiple linked documents. It is
	// implemented as a meta-marker-object controlling multiple normal
	// markers.
	var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) {
	this.markers = markers;
	this.primary = primary;
	for (var i = 0; i < markers.length; ++i)
	markers[i].parent = this;
	};
	eventMixin(SharedTextMarker);

	SharedTextMarker.prototype.clear = function() {
	if (this.explicitlyCleared) return;
	this.explicitlyCleared = true;
	for (var i = 0; i < this.markers.length; ++i)
	this.markers[i].clear();
	signalLater(this, "clear");
	};
	SharedTextMarker.prototype.find = function(side, lineObj) {
	return this.primary.find(side, lineObj);
	};

	function markTextShared(doc, from, to, options, type) {
	options = copyObj(options);
	options.shared = false;
	var markers = [markText(doc, from, to, options, type)], primary = markers[0];
	var widget = options.widgetNode;
	linkedDocs(doc, function(doc) {
	if (widget) options.widgetNode = widget.cloneNode(true);
	markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
	for (var i = 0; i < doc.linked.length; ++i)
	if (doc.linked[i].isParent) return;
	primary = lst(markers);
	});
	return new SharedTextMarker(markers, primary);
	}

	function findSharedMarkers(doc) {
	return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())),
	function(m) { return m.parent; });
	}

	function copySharedMarkers(doc, markers) {
	for (var i = 0; i < markers.length; i++) {
	var marker = markers[i], pos = marker.find();
	var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);
	if (cmp(mFrom, mTo)) {
	var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
	marker.markers.push(subMark);
	subMark.parent = marker;
	}
	}
	}

	function detachSharedMarkers(markers) {
	for (var i = 0; i < markers.length; i++) {
	var marker = markers[i], linked = [marker.primary.doc];;
	linkedDocs(marker.primary.doc, function(d) { linked.push(d); });
	for (var j = 0; j < marker.markers.length; j++) {
	var subMarker = marker.markers[j];
	if (indexOf(linked, subMarker.doc) == -1) {
	subMarker.parent = null;
	marker.markers.splice(j--, 1);
	}
	}
	}
	}

	// TEXTMARKER SPANS

	function MarkedSpan(marker, from, to) {
	this.marker = marker;
	this.from = from; this.to = to;
	}

	// Search an array of spans for a span matching the given marker.
	function getMarkedSpanFor(spans, marker) {
	if (spans) for (var i = 0; i < spans.length; ++i) {
	var span = spans[i];
	if (span.marker == marker) return span;
	}
	}
	// Remove a span from an array, returning undefined if no spans are
	// left (we don't store arrays for lines without spans).
	function removeMarkedSpan(spans, span) {
	for (var r, i = 0; i < spans.length; ++i)
	if (spans[i] != span) (r \|\| (r = [])).push(spans[i]);
	return r;
	}
	// Add a span to a line.
	function addMarkedSpan(line, span) {
	line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
	span.marker.attachLine(line);
	}

	// Used for the algorithm that adjusts markers for a change in the
	// document. These functions cut an array of spans at a given
	// character position, returning an array of remaining chunks (or
	// undefined if nothing remains).
	function markedSpansBefore(old, startCh, isInsert) {
	if (old) for (var i = 0, nw; i < old.length; ++i) {
	var span = old[i], marker = span.marker;
	var startsBefore = span.from == null \|\| (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
	if (startsBefore \|\| span.from == startCh && marker.type == "bookmark" && (!isInsert \|\| !span.marker.insertLeft)) {
	var endsAfter = span.to == null \|\| (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
	(nw \|\| (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
	}
	}
	return nw;
	}
	function markedSpansAfter(old, endCh, isInsert) {
	if (old) for (var i = 0, nw; i < old.length; ++i) {
	var span = old[i], marker = span.marker;
	var endsAfter = span.to == null \|\| (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
	if (endsAfter \|\| span.from == endCh && marker.type == "bookmark" && (!isInsert \|\| span.marker.insertLeft)) {
	var startsBefore = span.from == null \|\| (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
	(nw \|\| (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
	span.to == null ? null : span.to - endCh));
	}
	}
	return nw;
	}

	// Given a change object, compute the new set of marker spans that
	// cover the line in which the change took place. Removes spans
	// entirely within the change, reconnects spans belonging to the
	// same marker that appear on both sides of the change, and cuts off
	// spans partially within the change. Returns an array of span
	// arrays with one element for each line in (after) the change.
	function stretchSpansOverChange(doc, change) {
	if (change.full) return null;
	var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
	var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
	if (!oldFirst && !oldLast) return null;

	var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;
	// Get the spans that 'stick out' on both sides
	var first = markedSpansBefore(oldFirst, startCh, isInsert);
	var last = markedSpansAfter(oldLast, endCh, isInsert);

	// Next, merge those two ends
	var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
	if (first) {
	// Fix up .to properties of first
	for (var i = 0; i < first.length; ++i) {
	var span = first[i];
	if (span.to == null) {
	var found = getMarkedSpanFor(last, span.marker);
	if (!found) span.to = startCh;
	else if (sameLine) span.to = found.to == null ? null : found.to + offset;
	}
	}
	}
	if (last) {
	// Fix up .from in last (or move them into first in case of sameLine)
	for (var i = 0; i < last.length; ++i) {
	var span = last[i];
	if (span.to != null) span.to += offset;
	if (span.from == null) {
	var found = getMarkedSpanFor(first, span.marker);
	if (!found) {
	span.from = offset;
	if (sameLine) (first \|\| (first = [])).push(span);
	}
	} else {
	span.from += offset;
	if (sameLine) (first \|\| (first = [])).push(span);
	}
	}
	}
	// Make sure we didn't create any zero-length spans
	if (first) first = clearEmptySpans(first);
	if (last && last != first) last = clearEmptySpans(last);

	var newMarkers = [first];
	if (!sameLine) {
	// Fill gap with whole-line-spans
	var gap = change.text.length - 2, gapMarkers;
	if (gap > 0 && first)
	for (var i = 0; i < first.length; ++i)
	if (first[i].to == null)
	(gapMarkers \|\| (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null));
	for (var i = 0; i < gap; ++i)
	newMarkers.push(gapMarkers);
	newMarkers.push(last);
	}
	return newMarkers;
	}

	// Remove spans that are empty and don't have a clearWhenEmpty
	// option of false.
	function clearEmptySpans(spans) {
	for (var i = 0; i < spans.length; ++i) {
	var span = spans[i];
	if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
	spans.splice(i--, 1);
	}
	if (!spans.length) return null;
	return spans;
	}

	// Used for un/re-doing changes from the history. Combines the
	// result of computing the existing spans with the set of spans that
	// existed in the history (so that deleting around a span and then
	// undoing brings back the span).
	function mergeOldSpans(doc, change) {
	var old = getOldSpans(doc, change);
	var stretched = stretchSpansOverChange(doc, change);
	if (!old) return stretched;
	if (!stretched) return old;

	for (var i = 0; i < old.length; ++i) {
	var oldCur = old[i], stretchCur = stretched[i];
	if (oldCur && stretchCur) {
	spans: for (var j = 0; j < stretchCur.length; ++j) {
	var span = stretchCur[j];
	for (var k = 0; k < oldCur.length; ++k)
	if (oldCur[k].marker == span.marker) continue spans;
	oldCur.push(span);
	}
	} else if (stretchCur) {
	old[i] = stretchCur;
	}
	}
	return old;
	}

	// Used to 'clip' out readOnly ranges when making a change.
	function removeReadOnlyRanges(doc, from, to) {
	var markers = null;
	doc.iter(from.line, to.line + 1, function(line) {
	if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
	var mark = line.markedSpans[i].marker;
	if (mark.readOnly && (!markers \|\| indexOf(markers, mark) == -1))
	(markers \|\| (markers = [])).push(mark);
	}
	});
	if (!markers) return null;
	var parts = [{from: from, to: to}];
	for (var i = 0; i < markers.length; ++i) {
	var mk = markers[i], m = mk.find(0);
	for (var j = 0; j < parts.length; ++j) {
	var p = parts[j];
	if (cmp(p.to, m.from) < 0 \|\| cmp(p.from, m.to) > 0) continue;
	var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
	if (dfrom < 0 \|\| !mk.inclusiveLeft && !dfrom)
	newParts.push({from: p.from, to: m.from});
	if (dto > 0 \|\| !mk.inclusiveRight && !dto)
	newParts.push({from: m.to, to: p.to});
	parts.splice.apply(parts, newParts);
	j += newParts.length - 1;
	}
	}
	return parts;
	}

	// Connect or disconnect spans from a line.
	function detachMarkedSpans(line) {
	var spans = line.markedSpans;
	if (!spans) return;
	for (var i = 0; i < spans.length; ++i)
	spans[i].marker.detachLine(line);
	line.markedSpans = null;
	}
	function attachMarkedSpans(line, spans) {
	if (!spans) return;
	for (var i = 0; i < spans.length; ++i)
	spans[i].marker.attachLine(line);
	line.markedSpans = spans;
	}

	// Helpers used when computing which overlapping collapsed span
	// counts as the larger one.
	function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; }
	function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; }

	// Returns a number indicating which of two overlapping collapsed
	// spans is larger (and thus includes the other). Falls back to
	// comparing ids when the spans cover exactly the same range.
	function compareCollapsedMarkers(a, b) {
	var lenDiff = a.lines.length - b.lines.length;
	if (lenDiff != 0) return lenDiff;
	var aPos = a.find(), bPos = b.find();
	var fromCmp = cmp(aPos.from, bPos.from) \|\| extraLeft(a) - extraLeft(b);
	if (fromCmp) return -fromCmp;
	var toCmp = cmp(aPos.to, bPos.to) \|\| extraRight(a) - extraRight(b);
	if (toCmp) return toCmp;
	return b.id - a.id;
	}

	// Find out whether a line ends or starts in a collapsed span. If
	// so, return the marker for that span.
	function collapsedSpanAtSide(line, start) {
	var sps = sawCollapsedSpans && line.markedSpans, found;
	if (sps) for (var sp, i = 0; i < sps.length; ++i) {
	sp = sps[i];
	if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
	(!found \|\| compareCollapsedMarkers(found, sp.marker) < 0))
	found = sp.marker;
	}
	return found;
	}
	function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); }
	function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); }

	// Test whether there exists a collapsed span that partially
	// overlaps (covers the start or end, but not both) of a new span.
	// Such overlap is not allowed.
	function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
	var line = getLine(doc, lineNo);
	var sps = sawCollapsedSpans && line.markedSpans;
	if (sps) for (var i = 0; i < sps.length; ++i) {
	var sp = sps[i];
	if (!sp.marker.collapsed) continue;
	var found = sp.marker.find(0);
	var fromCmp = cmp(found.from, from) \|\| extraLeft(sp.marker) - extraLeft(marker);
	var toCmp = cmp(found.to, to) \|\| extraRight(sp.marker) - extraRight(marker);
	if (fromCmp >= 0 && toCmp <= 0 \|\| fromCmp <= 0 && toCmp >= 0) continue;
	if (fromCmp <= 0 && (cmp(found.to, from) > 0 \|\| (sp.marker.inclusiveRight && marker.inclusiveLeft)) \|\|
	fromCmp >= 0 && (cmp(found.from, to) < 0 \|\| (sp.marker.inclusiveLeft && marker.inclusiveRight)))
	return true;
	}
	}

	// A visual line is a line as drawn on the screen. Folding, for
	// example, can cause multiple logical lines to appear on the same
	// visual line. This finds the start of the visual line that the
	// given line is part of (usually that is the line itself).
	function visualLine(line) {
	var merged;
	while (merged = collapsedSpanAtStart(line))
	line = merged.find(-1, true).line;
	return line;
	}

	// Returns an array of logical lines that continue the visual line
	// started by the argument, or undefined if there are no such lines.
	function visualLineContinued(line) {
	var merged, lines;
	while (merged = collapsedSpanAtEnd(line)) {
	line = merged.find(1, true).line;
	(lines \|\| (lines = [])).push(line);
	}
	return lines;
	}

	// Get the line number of the start of the visual line that the
	// given line number is part of.
	function visualLineNo(doc, lineN) {
	var line = getLine(doc, lineN), vis = visualLine(line);
	if (line == vis) return lineN;
	return lineNo(vis);
	}
	// Get the line number of the start of the next visual line after
	// the given line.
	function visualLineEndNo(doc, lineN) {
	if (lineN > doc.lastLine()) return lineN;
	var line = getLine(doc, lineN), merged;
	if (!lineIsHidden(doc, line)) return lineN;
	while (merged = collapsedSpanAtEnd(line))
	line = merged.find(1, true).line;
	return lineNo(line) + 1;
	}

	// Compute whether a line is hidden. Lines count as hidden when they
	// are part of a visual line that starts with another line, or when
	// they are entirely covered by collapsed, non-widget span.
	function lineIsHidden(doc, line) {
	var sps = sawCollapsedSpans && line.markedSpans;
	if (sps) for (var sp, i = 0; i < sps.length; ++i) {
	sp = sps[i];
	if (!sp.marker.collapsed) continue;
	if (sp.from == null) return true;
	if (sp.marker.widgetNode) continue;
	if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
	return true;
	}
	}
	function lineIsHiddenInner(doc, line, span) {
	if (span.to == null) {
	var end = span.marker.find(1, true);
	return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker));
	}
	if (span.marker.inclusiveRight && span.to == line.text.length)
	return true;
	for (var sp, i = 0; i < line.markedSpans.length; ++i) {
	sp = line.markedSpans[i];
	if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
	(sp.to == null \|\| sp.to != span.from) &&
	(sp.marker.inclusiveLeft \|\| span.marker.inclusiveRight) &&
	lineIsHiddenInner(doc, line, sp)) return true;
	}
	}

	// LINE WIDGETS

	// Line widgets are block elements displayed above or below a line.

	var LineWidget = CodeMirror.LineWidget = function(doc, node, options) {
	if (options) for (var opt in options) if (options.hasOwnProperty(opt))
	this[opt] = options[opt];
	this.doc = doc;
	this.node = node;
	};
	eventMixin(LineWidget);

	function adjustScrollWhenAboveVisible(cm, line, diff) {
	if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) \|\| cm.doc.scrollTop))
	addToScrollPos(cm, null, diff);
	}

	LineWidget.prototype.clear = function() {
	var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
	if (no == null \|\| !ws) return;
	for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);
	if (!ws.length) line.widgets = null;
	var height = widgetHeight(this);
	updateLineHeight(line, Math.max(0, line.height - height));
	if (cm) runInOp(cm, function() {
	adjustScrollWhenAboveVisible(cm, line, -height);
	regLineChange(cm, no, "widget");
	});
	};
	LineWidget.prototype.changed = function() {
	var oldH = this.height, cm = this.doc.cm, line = this.line;
	this.height = null;
	var diff = widgetHeight(this) - oldH;
	if (!diff) return;
	updateLineHeight(line, line.height + diff);
	if (cm) runInOp(cm, function() {
	cm.curOp.forceUpdate = true;
	adjustScrollWhenAboveVisible(cm, line, diff);
	});
	};

	function widgetHeight(widget) {
	if (widget.height != null) return widget.height;
	var cm = widget.doc.cm;
	if (!cm) return 0;
	if (!contains(document.body, widget.node)) {
	var parentStyle = "position: relative;";
	if (widget.coverGutter)
	parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;";
	if (widget.noHScroll)
	parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;";
	removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle));
	}
	return widget.height = widget.node.parentNode.offsetHeight;
	}

	function addLineWidget(doc, handle, node, options) {
	var widget = new LineWidget(doc, node, options);
	var cm = doc.cm;
	if (cm && widget.noHScroll) cm.display.alignWidgets = true;
	changeLine(doc, handle, "widget", function(line) {
	var widgets = line.widgets \|\| (line.widgets = []);
	if (widget.insertAt == null) widgets.push(widget);
	else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
	widget.line = line;
	if (cm && !lineIsHidden(doc, line)) {
	var aboveVisible = heightAtLine(line) < doc.scrollTop;
	updateLineHeight(line, line.height + widgetHeight(widget));
	if (aboveVisible) addToScrollPos(cm, null, widget.height);
	cm.curOp.forceUpdate = true;
	}
	return true;
	});
	return widget;
	}

	// LINE DATA STRUCTURE

	// Line objects. These hold state related to a line, including
	// highlighting info (the styles array).
	var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
	this.text = text;
	attachMarkedSpans(this, markedSpans);
	this.height = estimateHeight ? estimateHeight(this) : 1;
	};
	eventMixin(Line);
	Line.prototype.lineNo = function() { return lineNo(this); };

	// Change the content (text, markers) of a line. Automatically
	// invalidates cached information and tries to re-estimate the
	// line's height.
	function updateLine(line, text, markedSpans, estimateHeight) {
	line.text = text;
	if (line.stateAfter) line.stateAfter = null;
	if (line.styles) line.styles = null;
	if (line.order != null) line.order = null;
	detachMarkedSpans(line);
	attachMarkedSpans(line, markedSpans);
	var estHeight = estimateHeight ? estimateHeight(line) : 1;
	if (estHeight != line.height) updateLineHeight(line, estHeight);
	}

	// Detach a line from the document tree and its markers.
	function cleanUpLine(line) {
	line.parent = null;
	detachMarkedSpans(line);
	}

	function extractLineClasses(type, output) {
	if (type) for (;;) {
	var lineClass = type.match(/(?:^\|\s+)line-(background-)?(\S+)/);
	if (!lineClass) break;
	type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
	var prop = lineClass[1] ? "bgClass" : "textClass";
	if (output[prop] == null)
	output[prop] = lineClass[2];
	else if (!(new RegExp("(?:^\|\s)" + lineClass[2] + "(?:$\|\s)")).test(output[prop]))
	output[prop] += " " + lineClass[2];
	}
	return type;
	}

	function callBlankLine(mode, state) {
	if (mode.blankLine) return mode.blankLine(state);
	if (!mode.innerMode) return;
	var inner = CodeMirror.innerMode(mode, state);
	if (inner.mode.blankLine) return inner.mode.blankLine(inner.state);
	}

	function readToken(mode, stream, state, inner) {
	for (var i = 0; i < 10; i++) {
	if (inner) inner[0] = CodeMirror.innerMode(mode, state).mode;
	var style = mode.token(stream, state);
	if (stream.pos > stream.start) return style;
	}
	throw new Error("Mode " + mode.name + " failed to advance stream.");
	}

	// Utility for getTokenAt and getLineTokens
	function takeToken(cm, pos, precise, asArray) {
	function getObj(copy) {
	return {start: stream.start, end: stream.pos,
	string: stream.current(),
	type: style \|\| null,
	state: copy ? copyState(doc.mode, state) : state};
	}

	var doc = cm.doc, mode = doc.mode, style;
	pos = clipPos(doc, pos);
	var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise);
	var stream = new StringStream(line.text, cm.options.tabSize), tokens;
	if (asArray) tokens = [];
	while ((asArray \|\| stream.pos < pos.ch) && !stream.eol()) {
	stream.start = stream.pos;
	style = readToken(mode, stream, state);
	if (asArray) tokens.push(getObj(true));
	}
	return asArray ? tokens : getObj();
	}

	// Run the given mode's parser over a line, calling f for each token.
	function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) {
	var flattenSpans = mode.flattenSpans;
	if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
	var curStart = 0, curStyle = null;
	var stream = new StringStream(text, cm.options.tabSize), style;
	var inner = cm.options.addModeClass && [null];
	if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses);
	while (!stream.eol()) {
	if (stream.pos > cm.options.maxHighlightLength) {
	flattenSpans = false;
	if (forceToEnd) processLine(cm, text, state, stream.pos);
	stream.pos = text.length;
	style = null;
	} else {
	style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses);
	}
	if (inner) {
	var mName = inner[0].name;
	if (mName) style = "m-" + (style ? mName + " " + style : mName);
	}
	if (!flattenSpans \|\| curStyle != style) {
	while (curStart < stream.start) {
	curStart = Math.min(stream.start, curStart + 50000);
	f(curStart, curStyle);
	}
	curStyle = style;
	}
	stream.start = stream.pos;
	}
	while (curStart < stream.pos) {
	// Webkit seems to refuse to render text nodes longer than 57444 characters
	var pos = Math.min(stream.pos, curStart + 50000);
	f(pos, curStyle);
	curStart = pos;
	}
	}

	// Compute a style array (an array starting with a mode generation
	// -- for invalidation -- followed by pairs of end positions and
	// style strings), which is used to highlight the tokens on the
	// line.
	function highlightLine(cm, line, state, forceToEnd) {
	// A styles array always starts with a number identifying the
	// mode/overlays that it is based on (for easy invalidation).
	var st = [cm.state.modeGen], lineClasses = {};
	// Compute the base array of styles
	runMode(cm, line.text, cm.doc.mode, state, function(end, style) {
	st.push(end, style);
	}, lineClasses, forceToEnd);

	// Run overlays, adjust style array.
	for (var o = 0; o < cm.state.overlays.length; ++o) {
	var overlay = cm.state.overlays[o], i = 1, at = 0;
	runMode(cm, line.text, overlay.mode, true, function(end, style) {
	var start = i;
	// Ensure there's a token end at the current position, and that i points at it
	while (at < end) {
	var i_end = st[i];
	if (i_end > end)
	st.splice(i, 1, end, st[i+1], i_end);
	i += 2;
	at = Math.min(end, i_end);
	}
	if (!style) return;
	if (overlay.opaque) {
	st.splice(start, i - start, end, "cm-overlay " + style);
	i = start + 2;
	} else {
	for (; start < i; start += 2) {
	var cur = st[start+1];
	st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style;
	}
	}
	}, lineClasses);
	}

	return {styles: st, classes: lineClasses.bgClass \|\| lineClasses.textClass ? lineClasses : null};
	}

	function getLineStyles(cm, line, updateFrontier) {
	if (!line.styles \|\| line.styles[0] != cm.state.modeGen) {
	var state = getStateBefore(cm, lineNo(line));
	var result = highlightLine(cm, line, line.text.length > cm.options.maxHighlightLength ? copyState(cm.doc.mode, state) : state);
	line.stateAfter = state;
	line.styles = result.styles;
	if (result.classes) line.styleClasses = result.classes;
	else if (line.styleClasses) line.styleClasses = null;
	if (updateFrontier === cm.doc.frontier) cm.doc.frontier++;
	}
	return line.styles;
	}

	// Lightweight form of highlight -- proceed over this line and
	// update state, but don't save a style array. Used for lines that
	// aren't currently visible.
	function processLine(cm, text, state, startAt) {
	var mode = cm.doc.mode;
	var stream = new StringStream(text, cm.options.tabSize);
	stream.start = stream.pos = startAt \|\| 0;
	if (text == "") callBlankLine(mode, state);
	while (!stream.eol()) {
	readToken(mode, stream, state);
	stream.start = stream.pos;
	}
	}

	// Convert a style as returned by a mode (either null, or a string
	// containing one or more styles) to a CSS style. This is cached,
	// and also looks for line-wide styles.
	var styleToClassCache = {}, styleToClassCacheWithMode = {};
	function interpretTokenStyle(style, options) {
	if (!style \|\| /^\s*$/.test(style)) return null;
	var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
	return cache[style] \|\|
	(cache[style] = style.replace(/\S+/g, "cm-$&"));
	}

	// Render the DOM representation of the text of a line. Also builds
	// up a 'line map', which points at the DOM nodes that represent
	// specific stretches of text, and is used by the measuring code.
	// The returned object contains the DOM node, this map, and
	// information about line-wide styles that were set by the mode.
	function buildLineContent(cm, lineView) {
	// The padding-right forces the element to have a 'border', which
	// is needed on Webkit to be able to get line-level bounding
	// rectangles for it (in measureChar).
	var content = elt("span", null, null, webkit ? "padding-right: .1px" : null);
	var builder = {pre: elt("pre", [content], "CodeMirror-line"), content: content,
	col: 0, pos: 0, cm: cm,
	splitSpaces: (ie \|\| webkit) && cm.getOption("lineWrapping")};
	lineView.measure = {};

	// Iterate over the logical lines that make up this visual line.
	for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
	var line = i ? lineView.rest[i - 1] : lineView.line, order;
	builder.pos = 0;
	builder.addToken = buildToken;
	// Optionally wire in some hacks into the token-rendering
	// algorithm, to deal with browser quirks.
	if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))
	builder.addToken = buildTokenBadBidi(builder.addToken, order);
	builder.map = [];
	var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);
	insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));
	if (line.styleClasses) {
	if (line.styleClasses.bgClass)
	builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass \|\| "");
	if (line.styleClasses.textClass)
	builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass \|\| "");
	}

	// Ensure at least a single node is present, for measuring.
	if (builder.map.length == 0)
	builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure)));

	// Store the map and a cache object for the current logical line
	if (i == 0) {
	lineView.measure.map = builder.map;
	lineView.measure.cache = {};
	} else {
	(lineView.measure.maps \|\| (lineView.measure.maps = [])).push(builder.map);
	(lineView.measure.caches \|\| (lineView.measure.caches = [])).push({});
	}
	}

	// See issue #2901
	if (webkit && /\bcm-tab\b/.test(builder.content.lastChild.className))
	builder.content.className = "cm-tab-wrap-hack";

	signal(cm, "renderLine", cm, lineView.line, builder.pre);
	if (builder.pre.className)
	builder.textClass = joinClasses(builder.pre.className, builder.textClass \|\| "");

	return builder;
	}

	function defaultSpecialCharPlaceholder(ch) {
	var token = elt("span", "\u2022", "cm-invalidchar");
	token.title = "\\u" + ch.charCodeAt(0).toString(16);
	token.setAttribute("aria-label", token.title);
	return token;
	}

	// Build up the DOM representation for a single token, and add it to
	// the line map. Takes care to render special characters separately.
	function buildToken(builder, text, style, startStyle, endStyle, title, css) {
	if (!text) return;
	var displayText = builder.splitSpaces ? text.replace(/ {3,}/g, splitSpaces) : text;
	var special = builder.cm.state.specialChars, mustWrap = false;
	if (!special.test(text)) {
	builder.col += text.length;
	var content = document.createTextNode(displayText);
	builder.map.push(builder.pos, builder.pos + text.length, content);
	if (ie && ie_version < 9) mustWrap = true;
	builder.pos += text.length;
	} else {
	var content = document.createDocumentFragment(), pos = 0;
	while (true) {
	special.lastIndex = pos;
	var m = special.exec(text);
	var skipped = m ? m.index - pos : text.length - pos;
	if (skipped) {
	var txt = document.createTextNode(displayText.slice(pos, pos + skipped));
	if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
	else content.appendChild(txt);
	builder.map.push(builder.pos, builder.pos + skipped, txt);
	builder.col += skipped;
	builder.pos += skipped;
	}
	if (!m) break;
	pos += skipped + 1;
	if (m[0] == "\t") {
	var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
	var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
	txt.setAttribute("role", "presentation");
	txt.setAttribute("cm-text", "\t");
	builder.col += tabWidth;
	} else if (m[0] == "\r" \|\| m[0] == "\n") {
	var txt = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar"));
	txt.setAttribute("cm-text", m[0]);
	builder.col += 1;
	} else {
	var txt = builder.cm.options.specialCharPlaceholder(m[0]);
	txt.setAttribute("cm-text", m[0]);
	if (ie && ie_version < 9) content.appendChild(elt("span", [txt]));
	else content.appendChild(txt);
	builder.col += 1;
	}
	builder.map.push(builder.pos, builder.pos + 1, txt);
	builder.pos++;
	}
	}
	if (style \|\| startStyle \|\| endStyle \|\| mustWrap \|\| css) {
	var fullStyle = style \|\| "";
	if (startStyle) fullStyle += startStyle;
	if (endStyle) fullStyle += endStyle;
	var token = elt("span", [content], fullStyle, css);
	if (title) token.title = title;
	return builder.content.appendChild(token);
	}
	builder.content.appendChild(content);
	}

	function splitSpaces(old) {
	var out = " ";
	for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
	out += " ";
	return out;
	}

	// Work around nonsense dimensions being reported for stretches of
	// right-to-left text.
	function buildTokenBadBidi(inner, order) {
	return function(builder, text, style, startStyle, endStyle, title, css) {
	style = style ? style + " cm-force-border" : "cm-force-border";
	var start = builder.pos, end = start + text.length;
	for (;;) {
	// Find the part that overlaps with the start of this text
	for (var i = 0; i < order.length; i++) {
	var part = order[i];
	if (part.to > start && part.from <= start) break;
	}
	if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title, css);
	inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css);
	startStyle = null;
	text = text.slice(part.to - start);
	start = part.to;
	}
	};
	}

	function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
	var widget = !ignoreWidget && marker.widgetNode;
	if (widget) builder.map.push(builder.pos, builder.pos + size, widget);
	if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
	if (!widget)
	widget = builder.content.appendChild(document.createElement("span"));
	widget.setAttribute("cm-marker", marker.id);
	}
	if (widget) {
	builder.cm.display.input.setUneditable(widget);
	builder.content.appendChild(widget);
	}
	builder.pos += size;
	}

	// Outputs a number of spans to make up a line, taking highlighting
	// and marked text into account.
	function insertLineContent(line, builder, styles) {
	var spans = line.markedSpans, allText = line.text, at = 0;
	if (!spans) {
	for (var i = 1; i < styles.length; i+=2)
	builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options));
	return;
	}

	var len = allText.length, pos = 0, i = 1, text = "", style, css;
	var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
	for (;;) {
	if (nextChange == pos) { // Update current marker set
	spanStyle = spanEndStyle = spanStartStyle = title = css = "";
	collapsed = null; nextChange = Infinity;
	var foundBookmarks = [];
	for (var j = 0; j < spans.length; ++j) {
	var sp = spans[j], m = sp.marker;
	if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
	foundBookmarks.push(m);
	} else if (sp.from <= pos && (sp.to == null \|\| sp.to > pos \|\| m.collapsed && sp.to == pos && sp.from == pos)) {
	if (sp.to != null && sp.to != pos && nextChange > sp.to) {
	nextChange = sp.to;
	spanEndStyle = "";
	}
	if (m.className) spanStyle += " " + m.className;
	if (m.css) css = (css ? css + ";" : "") + m.css;
	if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
	if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
	if (m.title && !title) title = m.title;
	if (m.collapsed && (!collapsed \|\| compareCollapsedMarkers(collapsed.marker, m) < 0))
	collapsed = sp;
	} else if (sp.from > pos && nextChange > sp.from) {
	nextChange = sp.from;
	}
	}
	if (collapsed && (collapsed.from \|\| 0) == pos) {
	buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
	collapsed.marker, collapsed.from == null);
	if (collapsed.to == null) return;
	if (collapsed.to == pos) collapsed = false;
	}
	if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
	buildCollapsedSpan(builder, 0, foundBookmarks[j]);
	}
	if (pos >= len) break;

	var upto = Math.min(len, nextChange);
	while (true) {
	if (text) {
	var end = pos + text.length;
	if (!collapsed) {
	var tokenText = end > upto ? text.slice(0, upto - pos) : text;
	builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
	spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css);
	}
	if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
	pos = end;
	spanStartStyle = "";
	}
	text = allText.slice(at, at = styles[i++]);
	style = interpretTokenStyle(styles[i++], builder.cm.options);
	}
	}
	}

	// DOCUMENT DATA STRUCTURE

	// By default, updates that start and end at the beginning of a line
	// are treated specially, in order to make the association of line
	// widgets and marker elements with the text behave more intuitive.
	function isWholeLineUpdate(doc, change) {
	return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
	(!doc.cm \|\| doc.cm.options.wholeLineUpdateBefore);
	}

	// Perform a change on the document data structure.
	function updateDoc(doc, change, markedSpans, estimateHeight) {
	function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
	function update(line, text, spans) {
	updateLine(line, text, spans, estimateHeight);
	signalLater(line, "change", line, change);
	}
	function linesFor(start, end) {
	for (var i = start, result = []; i < end; ++i)
	result.push(new Line(text[i], spansFor(i), estimateHeight));
	return result;
	}

	var from = change.from, to = change.to, text = change.text;
	var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
	var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;

	// Adjust the line structure
	if (change.full) {
	doc.insert(0, linesFor(0, text.length));
	doc.remove(text.length, doc.size - text.length);
	} else if (isWholeLineUpdate(doc, change)) {
	// This is a whole-line replace. Treated specially to make
	// sure line objects move the way they are supposed to.
	var added = linesFor(0, text.length - 1);
	update(lastLine, lastLine.text, lastSpans);
	if (nlines) doc.remove(from.line, nlines);
	if (added.length) doc.insert(from.line, added);
	} else if (firstLine == lastLine) {
	if (text.length == 1) {
	update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
	} else {
	var added = linesFor(1, text.length - 1);
	added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
	update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
	doc.insert(from.line + 1, added);
	}
	} else if (text.length == 1) {
	update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
	doc.remove(from.line + 1, nlines);
	} else {
	update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
	update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
	var added = linesFor(1, text.length - 1);
	if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
	doc.insert(from.line + 1, added);
	}

	signalLater(doc, "change", doc, change);
	}

	// The document is represented as a BTree consisting of leaves, with
	// chunk of lines in them, and branches, with up to ten leaves or
	// other branch nodes below them. The top node is always a branch
	// node, and is the document object itself (meaning it has
	// additional methods and properties).
	//
	// All nodes have parent links. The tree is used both to go from
	// line numbers to line objects, and to go from objects to numbers.
	// It also indexes by height, and is used to convert between height
	// and line object, and to find the total height of the document.
	//
	// See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html

	function LeafChunk(lines) {
	this.lines = lines;
	this.parent = null;
	for (var i = 0, height = 0; i < lines.length; ++i) {
	lines[i].parent = this;
	height += lines[i].height;
	}
	this.height = height;
	}

	LeafChunk.prototype = {
	chunkSize: function() { return this.lines.length; },
	// Remove the n lines at offset 'at'.
	removeInner: function(at, n) {
	for (var i = at, e = at + n; i < e; ++i) {
	var line = this.lines[i];
	this.height -= line.height;
	cleanUpLine(line);
	signalLater(line, "delete");
	}
	this.lines.splice(at, n);
	},
	// Helper used to collapse a small branch into a single leaf.
	collapse: function(lines) {
	lines.push.apply(lines, this.lines);
	},
	// Insert the given array of lines at offset 'at', count them as
	// having the given height.
	insertInner: function(at, lines, height) {
	this.height += height;
	this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
	for (var i = 0; i < lines.length; ++i) lines[i].parent = this;
	},
	// Used to iterate over a part of the tree.
	iterN: function(at, n, op) {
	for (var e = at + n; at < e; ++at)
	if (op(this.lines[at])) return true;
	}
	};

	function BranchChunk(children) {
	this.children = children;
	var size = 0, height = 0;
	for (var i = 0; i < children.length; ++i) {
	var ch = children[i];
	size += ch.chunkSize(); height += ch.height;
	ch.parent = this;
	}
	this.size = size;
	this.height = height;
	this.parent = null;
	}

	BranchChunk.prototype = {
	chunkSize: function() { return this.size; },
	removeInner: function(at, n) {
	this.size -= n;
	for (var i = 0; i < this.children.length; ++i) {
	var child = this.children[i], sz = child.chunkSize();
	if (at < sz) {
	var rm = Math.min(n, sz - at), oldHeight = child.height;
	child.removeInner(at, rm);
	this.height -= oldHeight - child.height;
	if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
	if ((n -= rm) == 0) break;
	at = 0;
	} else at -= sz;
	}
	// If the result is smaller than 25 lines, ensure that it is a
	// single leaf node.
	if (this.size - n < 25 &&
	(this.children.length > 1 \|\| !(this.children[0] instanceof LeafChunk))) {
	var lines = [];
	this.collapse(lines);
	this.children = [new LeafChunk(lines)];
	this.children[0].parent = this;
	}
	},
	collapse: function(lines) {
	for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines);
	},
	insertInner: function(at, lines, height) {
	this.size += lines.length;
	this.height += height;
	for (var i = 0; i < this.children.length; ++i) {
	var child = this.children[i], sz = child.chunkSize();
	if (at <= sz) {
	child.insertInner(at, lines, height);
	if (child.lines && child.lines.length > 50) {
	while (child.lines.length > 50) {
	var spilled = child.lines.splice(child.lines.length - 25, 25);
	var newleaf = new LeafChunk(spilled);
	child.height -= newleaf.height;
	this.children.splice(i + 1, 0, newleaf);
	newleaf.parent = this;
	}
	this.maybeSpill();
	}
	break;
	}
	at -= sz;
	}
	},
	// When a node has grown, check whether it should be split.
	maybeSpill: function() {
	if (this.children.length <= 10) return;
	var me = this;
	do {
	var spilled = me.children.splice(me.children.length - 5, 5);
	var sibling = new BranchChunk(spilled);
	if (!me.parent) { // Become the parent node
	var copy = new BranchChunk(me.children);
	copy.parent = me;
	me.children = [copy, sibling];
	me = copy;
	} else {
	me.size -= sibling.size;
	me.height -= sibling.height;
	var myIndex = indexOf(me.parent.children, me);
	me.parent.children.splice(myIndex + 1, 0, sibling);
	}
	sibling.parent = me.parent;
	} while (me.children.length > 10);
	me.parent.maybeSpill();
	},
	iterN: function(at, n, op) {
	for (var i = 0; i < this.children.length; ++i) {
	var child = this.children[i], sz = child.chunkSize();
	if (at < sz) {
	var used = Math.min(n, sz - at);
	if (child.iterN(at, used, op)) return true;
	if ((n -= used) == 0) break;
	at = 0;
	} else at -= sz;
	}
	}
	};

	var nextDocId = 0;
	var Doc = CodeMirror.Doc = function(text, mode, firstLine, lineSep) {
	if (!(this instanceof Doc)) return new Doc(text, mode, firstLine, lineSep);
	if (firstLine == null) firstLine = 0;

	BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
	this.first = firstLine;
	this.scrollTop = this.scrollLeft = 0;
	this.cantEdit = false;
	this.cleanGeneration = 1;
	this.frontier = firstLine;
	var start = Pos(firstLine, 0);
	this.sel = simpleSelection(start);
	this.history = new History(null);
	this.id = ++nextDocId;
	this.modeOption = mode;
	this.lineSep = lineSep;
	this.extend = false;

	if (typeof text == "string") text = this.splitLines(text);
	updateDoc(this, {from: start, to: start, text: text});
	setSelection(this, simpleSelection(start), sel_dontScroll);
	};

	Doc.prototype = createObj(BranchChunk.prototype, {
	constructor: Doc,
	// Iterate over the document. Supports two forms -- with only one
	// argument, it calls that for each line in the document. With
	// three, it iterates over the range given by the first two (with
	// the second being non-inclusive).
	iter: function(from, to, op) {
	if (op) this.iterN(from - this.first, to - from, op);
	else this.iterN(this.first, this.first + this.size, from);
	},

	// Non-public interface for adding and removing lines.
	insert: function(at, lines) {
	var height = 0;
	for (var i = 0; i < lines.length; ++i) height += lines[i].height;
	this.insertInner(at - this.first, lines, height);
	},
	remove: function(at, n) { this.removeInner(at - this.first, n); },

	// From here, the methods are part of the public interface. Most
	// are also available from CodeMirror (editor) instances.

	getValue: function(lineSep) {
	var lines = getLines(this, this.first, this.first + this.size);
	if (lineSep === false) return lines;
	return lines.join(lineSep \|\| this.lineSeparator());
	},
	setValue: docMethodOp(function(code) {
	var top = Pos(this.first, 0), last = this.first + this.size - 1;
	makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
	text: this.splitLines(code), origin: "setValue", full: true}, true);
	setSelection(this, simpleSelection(top));
	}),
	replaceRange: function(code, from, to, origin) {
	from = clipPos(this, from);
	to = to ? clipPos(this, to) : from;
	replaceRange(this, code, from, to, origin);
	},
	getRange: function(from, to, lineSep) {
	var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
	if (lineSep === false) return lines;
	return lines.join(lineSep \|\| this.lineSeparator());
	},

	getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},

	getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
	getLineNumber: function(line) {return lineNo(line);},

	getLineHandleVisualStart: function(line) {
	if (typeof line == "number") line = getLine(this, line);
	return visualLine(line);
	},

	lineCount: function() {return this.size;},
	firstLine: function() {return this.first;},
	lastLine: function() {return this.first + this.size - 1;},

	clipPos: function(pos) {return clipPos(this, pos);},

	getCursor: function(start) {
	var range = this.sel.primary(), pos;
	if (start == null \|\| start == "head") pos = range.head;
	else if (start == "anchor") pos = range.anchor;
	else if (start == "end" \|\| start == "to" \|\| start === false) pos = range.to();
	else pos = range.from();
	return pos;
	},
	listSelections: function() { return this.sel.ranges; },
	somethingSelected: function() {return this.sel.somethingSelected();},

	setCursor: docMethodOp(function(line, ch, options) {
	setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch \|\| 0) : line), null, options);
	}),
	setSelection: docMethodOp(function(anchor, head, options) {
	setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head \|\| anchor), options);
	}),
	extendSelection: docMethodOp(function(head, other, options) {
	extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
	}),
	extendSelections: docMethodOp(function(heads, options) {
	extendSelections(this, clipPosArray(this, heads, options));
	}),
	extendSelectionsBy: docMethodOp(function(f, options) {
	extendSelections(this, map(this.sel.ranges, f), options);
	}),
	setSelections: docMethodOp(function(ranges, primary, options) {
	if (!ranges.length) return;
	for (var i = 0, out = []; i < ranges.length; i++)
	out[i] = new Range(clipPos(this, ranges[i].anchor),
	clipPos(this, ranges[i].head));
	if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex);
	setSelection(this, normalizeSelection(out, primary), options);
	}),
	addSelection: docMethodOp(function(anchor, head, options) {
	var ranges = this.sel.ranges.slice(0);
	ranges.push(new Range(clipPos(this, anchor), clipPos(this, head \|\| anchor)));
	setSelection(this, normalizeSelection(ranges, ranges.length - 1), options);
	}),

	getSelection: function(lineSep) {
	var ranges = this.sel.ranges, lines;
	for (var i = 0; i < ranges.length; i++) {
	var sel = getBetween(this, ranges[i].from(), ranges[i].to());
	lines = lines ? lines.concat(sel) : sel;
	}
	if (lineSep === false) return lines;
	else return lines.join(lineSep \|\| this.lineSeparator());
	},
	getSelections: function(lineSep) {
	var parts = [], ranges = this.sel.ranges;
	for (var i = 0; i < ranges.length; i++) {
	var sel = getBetween(this, ranges[i].from(), ranges[i].to());
	if (lineSep !== false) sel = sel.join(lineSep \|\| this.lineSeparator());
	parts[i] = sel;
	}
	return parts;
	},
	replaceSelection: function(code, collapse, origin) {
	var dup = [];
	for (var i = 0; i < this.sel.ranges.length; i++)
	dup[i] = code;
	this.replaceSelections(dup, collapse, origin \|\| "+input");
	},
	replaceSelections: docMethodOp(function(code, collapse, origin) {
	var changes = [], sel = this.sel;
	for (var i = 0; i < sel.ranges.length; i++) {
	var range = sel.ranges[i];
	changes[i] = {from: range.from(), to: range.to(), text: this.splitLines(code[i]), origin: origin};
	}
	var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
	for (var i = changes.length - 1; i >= 0; i--)
	makeChange(this, changes[i]);
	if (newSel) setSelectionReplaceHistory(this, newSel);
	else if (this.cm) ensureCursorVisible(this.cm);
	}),
	undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
	redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
	undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
	redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),

	setExtending: function(val) {this.extend = val;},
	getExtending: function() {return this.extend;},

	historySize: function() {
	var hist = this.history, done = 0, undone = 0;
	for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done;
	for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone;
	return {undo: done, redo: undone};
	},
	clearHistory: function() {this.history = new History(this.history.maxGeneration);},

	markClean: function() {
	this.cleanGeneration = this.changeGeneration(true);
	},
	changeGeneration: function(forceSplit) {
	if (forceSplit)
	this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null;
	return this.history.generation;
	},
	isClean: function (gen) {
	return this.history.generation == (gen \|\| this.cleanGeneration);
	},

	getHistory: function() {
	return {done: copyHistoryArray(this.history.done),
	undone: copyHistoryArray(this.history.undone)};
	},
	setHistory: function(histData) {
	var hist = this.history = new History(this.history.maxGeneration);
	hist.done = copyHistoryArray(histData.done.slice(0), null, true);
	hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
	},

	addLineClass: docMethodOp(function(handle, where, cls) {
	return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
	var prop = where == "text" ? "textClass"
	: where == "background" ? "bgClass"
	: where == "gutter" ? "gutterClass" : "wrapClass";
	if (!line[prop]) line[prop] = cls;
	else if (classTest(cls).test(line[prop])) return false;
	else line[prop] += " " + cls;
	return true;
	});
	}),
	removeLineClass: docMethodOp(function(handle, where, cls) {
	return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) {
	var prop = where == "text" ? "textClass"
	: where == "background" ? "bgClass"
	: where == "gutter" ? "gutterClass" : "wrapClass";
	var cur = line[prop];
	if (!cur) return false;
	else if (cls == null) line[prop] = null;
	else {
	var found = cur.match(classTest(cls));
	if (!found) return false;
	var end = found.index + found[0].length;
	line[prop] = cur.slice(0, found.index) + (!found.index \|\| end == cur.length ? "" : " ") + cur.slice(end) \|\| null;
	}
	return true;
	});
	}),

	addLineWidget: docMethodOp(function(handle, node, options) {
	return addLineWidget(this, handle, node, options);
	}),
	removeLineWidget: function(widget) { widget.clear(); },

	markText: function(from, to, options) {
	return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type \|\| "range");
	},
	setBookmark: function(pos, options) {
	var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
	insertLeft: options && options.insertLeft,
	clearWhenEmpty: false, shared: options && options.shared,
	handleMouseEvents: options && options.handleMouseEvents};
	pos = clipPos(this, pos);
	return markText(this, pos, pos, realOpts, "bookmark");
	},
	findMarksAt: function(pos) {
	pos = clipPos(this, pos);
	var markers = [], spans = getLine(this, pos.line).markedSpans;
	if (spans) for (var i = 0; i < spans.length; ++i) {
	var span = spans[i];
	if ((span.from == null \|\| span.from <= pos.ch) &&
	(span.to == null \|\| span.to >= pos.ch))
	markers.push(span.marker.parent \|\| span.marker);
	}
	return markers;
	},
	findMarks: function(from, to, filter) {
	from = clipPos(this, from); to = clipPos(this, to);
	var found = [], lineNo = from.line;
	this.iter(from.line, to.line + 1, function(line) {
	var spans = line.markedSpans;
	if (spans) for (var i = 0; i < spans.length; i++) {
	var span = spans[i];
	if (!(lineNo == from.line && from.ch > span.to \|\|
	span.from == null && lineNo != from.line\|\|
	lineNo == to.line && span.from > to.ch) &&
	(!filter \|\| filter(span.marker)))
	found.push(span.marker.parent \|\| span.marker);
	}
	++lineNo;
	});
	return found;
	},
	getAllMarks: function() {
	var markers = [];
	this.iter(function(line) {
	var sps = line.markedSpans;
	if (sps) for (var i = 0; i < sps.length; ++i)
	if (sps[i].from != null) markers.push(sps[i].marker);
	});
	return markers;
	},

	posFromIndex: function(off) {
	var ch, lineNo = this.first;
	this.iter(function(line) {
	var sz = line.text.length + 1;
	if (sz > off) { ch = off; return true; }
	off -= sz;
	++lineNo;
	});
	return clipPos(this, Pos(lineNo, ch));
	},
	indexFromPos: function (coords) {
	coords = clipPos(this, coords);
	var index = coords.ch;
	if (coords.line < this.first \|\| coords.ch < 0) return 0;
	this.iter(this.first, coords.line, function (line) {
	index += line.text.length + 1;
	});
	return index;
	},

	copy: function(copyHistory) {
	var doc = new Doc(getLines(this, this.first, this.first + this.size),
	this.modeOption, this.first, this.lineSep);
	doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
	doc.sel = this.sel;
	doc.extend = false;
	if (copyHistory) {
	doc.history.undoDepth = this.history.undoDepth;
	doc.setHistory(this.getHistory());
	}
	return doc;
	},

	linkedDoc: function(options) {
	if (!options) options = {};
	var from = this.first, to = this.first + this.size;
	if (options.from != null && options.from > from) from = options.from;
	if (options.to != null && options.to < to) to = options.to;
	var copy = new Doc(getLines(this, from, to), options.mode \|\| this.modeOption, from, this.lineSep);
	if (options.sharedHist) copy.history = this.history;
	(this.linked \|\| (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
	copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
	copySharedMarkers(copy, findSharedMarkers(this));
	return copy;
	},
	unlinkDoc: function(other) {
	if (other instanceof CodeMirror) other = other.doc;
	if (this.linked) for (var i = 0; i < this.linked.length; ++i) {
	var link = this.linked[i];
	if (link.doc != other) continue;
	this.linked.splice(i, 1);
	other.unlinkDoc(this);
	detachSharedMarkers(findSharedMarkers(this));
	break;
	}
	// If the histories were shared, split them again
	if (other.history == this.history) {
	var splitIds = [other.id];
	linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);
	other.history = new History(null);
	other.history.done = copyHistoryArray(this.history.done, splitIds);
	other.history.undone = copyHistoryArray(this.history.undone, splitIds);
	}
	},
	iterLinkedDocs: function(f) {linkedDocs(this, f);},

	getMode: function() {return this.mode;},
	getEditor: function() {return this.cm;},

	splitLines: function(str) {
	if (this.lineSep) return str.split(this.lineSep);
	return splitLinesAuto(str);
	},
	lineSeparator: function() { return this.lineSep \|\| "\n"; }
	});

	// Public alias.
	Doc.prototype.eachLine = Doc.prototype.iter;

	// Set up methods on CodeMirror's prototype to redirect to the editor's document.
	var dontDelegate = "iter insert remove copy getEditor constructor".split(" ");
	for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
	CodeMirror.prototype[prop] = (function(method) {
	return function() {return method.apply(this.doc, arguments);};
	})(Doc.prototype[prop]);

	eventMixin(Doc);

	// Call f for all linked documents.
	function linkedDocs(doc, f, sharedHistOnly) {
	function propagate(doc, skip, sharedHist) {
	if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {
	var rel = doc.linked[i];
	if (rel.doc == skip) continue;
	var shared = sharedHist && rel.sharedHist;
	if (sharedHistOnly && !shared) continue;
	f(rel.doc, shared);
	propagate(rel.doc, doc, shared);
	}
	}
	propagate(doc, null, true);
	}

	// Attach a document to an editor.
	function attachDoc(cm, doc) {
	if (doc.cm) throw new Error("This document is already in use.");
	cm.doc = doc;
	doc.cm = cm;
	estimateLineHeights(cm);
	loadMode(cm);
	if (!cm.options.lineWrapping) findMaxLine(cm);
	cm.options.mode = doc.modeOption;
	regChange(cm);
	}

	// LINE UTILITIES

	// Find the line object corresponding to the given line number.
	function getLine(doc, n) {
	n -= doc.first;
	if (n < 0 \|\| n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document.");
	for (var chunk = doc; !chunk.lines;) {
	for (var i = 0;; ++i) {
	var child = chunk.children[i], sz = child.chunkSize();
	if (n < sz) { chunk = child; break; }
	n -= sz;
	}
	}
	return chunk.lines[n];
	}

	// Get the part of a document between two positions, as an array of
	// strings.
	function getBetween(doc, start, end) {
	var out = [], n = start.line;
	doc.iter(start.line, end.line + 1, function(line) {
	var text = line.text;
	if (n == end.line) text = text.slice(0, end.ch);
	if (n == start.line) text = text.slice(start.ch);
	out.push(text);
	++n;
	});
	return out;
	}
	// Get the lines between from and to, as array of strings.
	function getLines(doc, from, to) {
	var out = [];
	doc.iter(from, to, function(line) { out.push(line.text); });
	return out;
	}

	// Update the height of a line, propagating the height change
	// upwards to parent nodes.
	function updateLineHeight(line, height) {
	var diff = height - line.height;
	if (diff) for (var n = line; n; n = n.parent) n.height += diff;
	}

	// Given a line object, find its line number by walking up through
	// its parent links.
	function lineNo(line) {
	if (line.parent == null) return null;
	var cur = line.parent, no = indexOf(cur.lines, line);
	for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
	for (var i = 0;; ++i) {
	if (chunk.children[i] == cur) break;
	no += chunk.children[i].chunkSize();
	}
	}
	return no + cur.first;
	}

	// Find the line at the given vertical position, using the height
	// information in the document tree.
	function lineAtHeight(chunk, h) {
	var n = chunk.first;
	outer: do {
	for (var i = 0; i < chunk.children.length; ++i) {
	var child = chunk.children[i], ch = child.height;
	if (h < ch) { chunk = child; continue outer; }
	h -= ch;
	n += child.chunkSize();
	}
	return n;
	} while (!chunk.lines);
	for (var i = 0; i < chunk.lines.length; ++i) {
	var line = chunk.lines[i], lh = line.height;
	if (h < lh) break;
	h -= lh;
	}
	return n + i;
	}


	// Find the height above the given line.
	function heightAtLine(lineObj) {
	lineObj = visualLine(lineObj);

	var h = 0, chunk = lineObj.parent;
	for (var i = 0; i < chunk.lines.length; ++i) {
	var line = chunk.lines[i];
	if (line == lineObj) break;
	else h += line.height;
	}
	for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
	for (var i = 0; i < p.children.length; ++i) {
	var cur = p.children[i];
	if (cur == chunk) break;
	else h += cur.height;
	}
	}
	return h;
	}

	// Get the bidi ordering for the given line (and cache it). Returns
	// false for lines that are fully left-to-right, and an array of
	// BidiSpan objects otherwise.
	function getOrder(line) {
	var order = line.order;
	if (order == null) order = line.order = bidiOrdering(line.text);
	return order;
	}

	// HISTORY

	function History(startGen) {
	// Arrays of change events and selections. Doing something adds an
	// event to done and clears undo. Undoing moves events from done
	// to undone, redoing moves them in the other direction.
	this.done = []; this.undone = [];
	this.undoDepth = Infinity;
	// Used to track when changes can be merged into a single undo
	// event
	this.lastModTime = this.lastSelTime = 0;
	this.lastOp = this.lastSelOp = null;
	this.lastOrigin = this.lastSelOrigin = null;
	// Used by the isClean() method
	this.generation = this.maxGeneration = startGen \|\| 1;
	}

	// Create a history change event from an updateDoc-style change
	// object.
	function historyChangeFromChange(doc, change) {
	var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
	attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
	linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
	return histChange;
	}

	// Pop all selection events off the end of a history array. Stop at
	// a change event.
	function clearSelectionEvents(array) {
	while (array.length) {
	var last = lst(array);
	if (last.ranges) array.pop();
	else break;
	}
	}

	// Find the top change event in the history. Pop off selection
	// events that are in the way.
	function lastChangeEvent(hist, force) {
	if (force) {
	clearSelectionEvents(hist.done);
	return lst(hist.done);
	} else if (hist.done.length && !lst(hist.done).ranges) {
	return lst(hist.done);
	} else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
	hist.done.pop();
	return lst(hist.done);
	}
	}

	// Register a change in the history. Merges changes that are within
	// a single operation, ore are close together with an origin that
	// allows merging (starting with "+") into a single event.
	function addChangeToHistory(doc, change, selAfter, opId) {
	var hist = doc.history;
	hist.undone.length = 0;
	var time = +new Date, cur;

	if ((hist.lastOp == opId \|\|
	hist.lastOrigin == change.origin && change.origin &&
	((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) \|\|
	change.origin.charAt(0) == "*")) &&
	(cur = lastChangeEvent(hist, hist.lastOp == opId))) {
	// Merge this change into the last event
	var last = lst(cur.changes);
	if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
	// Optimized case for simple insertion -- don't want to add
	// new changesets for every character typed
	last.to = changeEnd(change);
	} else {
	// Add new sub-event
	cur.changes.push(historyChangeFromChange(doc, change));
	}
	} else {
	// Can not be merged, start a new event.
	var before = lst(hist.done);
	if (!before \|\| !before.ranges)
	pushSelectionToHistory(doc.sel, hist.done);
	cur = {changes: [historyChangeFromChange(doc, change)],
	generation: hist.generation};
	hist.done.push(cur);
	while (hist.done.length > hist.undoDepth) {
	hist.done.shift();
	if (!hist.done[0].ranges) hist.done.shift();
	}
	}
	hist.done.push(selAfter);
	hist.generation = ++hist.maxGeneration;
	hist.lastModTime = hist.lastSelTime = time;
	hist.lastOp = hist.lastSelOp = opId;
	hist.lastOrigin = hist.lastSelOrigin = change.origin;

	if (!last) signal(doc, "historyAdded");
	}

	function selectionEventCanBeMerged(doc, origin, prev, sel) {
	var ch = origin.charAt(0);
	return ch == "*" \|\|
	ch == "+" &&
	prev.ranges.length == sel.ranges.length &&
	prev.somethingSelected() == sel.somethingSelected() &&
	new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500);
	}

	// Called whenever the selection changes, sets the new selection as
	// the pending selection in the history, and pushes the old pending
	// selection into the 'done' array when it was significantly
	// different (in number of selected ranges, emptiness, or time).
	function addSelectionToHistory(doc, sel, opId, options) {
	var hist = doc.history, origin = options && options.origin;

	// A new event is started when the previous origin does not match
	// the current, or the origins don't allow matching. Origins
	// starting with * are always merged, those starting with + are
	// merged when similar and close together in time.
	if (opId == hist.lastSelOp \|\|
	(origin && hist.lastSelOrigin == origin &&
	(hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin \|\|
	selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
	hist.done[hist.done.length - 1] = sel;
	else
	pushSelectionToHistory(sel, hist.done);

	hist.lastSelTime = +new Date;
	hist.lastSelOrigin = origin;
	hist.lastSelOp = opId;
	if (options && options.clearRedo !== false)
	clearSelectionEvents(hist.undone);
	}

	function pushSelectionToHistory(sel, dest) {
	var top = lst(dest);
	if (!(top && top.ranges && top.equals(sel)))
	dest.push(sel);
	}

	// Used to store marked span information in the history.
	function attachLocalSpans(doc, change, from, to) {
	var existing = change["spans_" + doc.id], n = 0;
	doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
	if (line.markedSpans)
	(existing \|\| (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
	++n;
	});
	}

	// When un/re-doing restores text containing marked spans, those
	// that have been explicitly cleared should not be restored.
	function removeClearedSpans(spans) {
	if (!spans) return null;
	for (var i = 0, out; i < spans.length; ++i) {
	if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
	else if (out) out.push(spans[i]);
	}
	return !out ? spans : out.length ? out : null;
	}

	// Retrieve and filter the old marked spans stored in a change event.
	function getOldSpans(doc, change) {
	var found = change["spans_" + doc.id];
	if (!found) return null;
	for (var i = 0, nw = []; i < change.text.length; ++i)
	nw.push(removeClearedSpans(found[i]));
	return nw;
	}

	// Used both to provide a JSON-safe object in .getHistory, and, when
	// detaching a document, to split the history in two
	function copyHistoryArray(events, newGroup, instantiateSel) {
	for (var i = 0, copy = []; i < events.length; ++i) {
	var event = events[i];
	if (event.ranges) {
	copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
	continue;
	}
	var changes = event.changes, newChanges = [];
	copy.push({changes: newChanges});
	for (var j = 0; j < changes.length; ++j) {
	var change = changes[j], m;
	newChanges.push({from: change.from, to: change.to, text: change.text});
	if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) {
	if (indexOf(newGroup, Number(m[1])) > -1) {
	lst(newChanges)[prop] = change[prop];
	delete change[prop];
	}
	}
	}
	}
	return copy;
	}

	// Rebasing/resetting history to deal with externally-sourced changes

	function rebaseHistSelSingle(pos, from, to, diff) {
	if (to < pos.line) {
	pos.line += diff;
	} else if (from < pos.line) {
	pos.line = from;
	pos.ch = 0;
	}
	}

	// Tries to rebase an array of history events given a change in the
	// document. If the change touches the same lines as the event, the
	// event, and everything 'behind' it, is discarded. If the change is
	// before the event, the event's positions are updated. Uses a
	// copy-on-write scheme for the positions, to avoid having to
	// reallocate them all on every rebase, but also avoid problems with
	// shared position objects being unsafely updated.
	function rebaseHistArray(array, from, to, diff) {
	for (var i = 0; i < array.length; ++i) {
	var sub = array[i], ok = true;
	if (sub.ranges) {
	if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
	for (var j = 0; j < sub.ranges.length; j++) {
	rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
	rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
	}
	continue;
	}
	for (var j = 0; j < sub.changes.length; ++j) {
	var cur = sub.changes[j];
	if (to < cur.from.line) {
	cur.from = Pos(cur.from.line + diff, cur.from.ch);
	cur.to = Pos(cur.to.line + diff, cur.to.ch);
	} else if (from <= cur.to.line) {
	ok = false;
	break;
	}
	}
	if (!ok) {
	array.splice(0, i + 1);
	i = 0;
	}
	}
	}

	function rebaseHist(hist, change) {
	var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
	rebaseHistArray(hist.done, from, to, diff);
	rebaseHistArray(hist.undone, from, to, diff);
	}

	// EVENT UTILITIES

	// Due to the fact that we still support jurassic IE versions, some
	// compatibility wrappers are needed.

	var e_preventDefault = CodeMirror.e_preventDefault = function(e) {
	if (e.preventDefault) e.preventDefault();
	else e.returnValue = false;
	};
	var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) {
	if (e.stopPropagation) e.stopPropagation();
	else e.cancelBubble = true;
	};
	function e_defaultPrevented(e) {
	return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
	}
	var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);};

	function e_target(e) {return e.target \|\| e.srcElement;}
	function e_button(e) {
	var b = e.which;
	if (b == null) {
	if (e.button & 1) b = 1;
	else if (e.button & 2) b = 3;
	else if (e.button & 4) b = 2;
	}
	if (mac && e.ctrlKey && b == 1) b = 3;
	return b;
	}

	// EVENT HANDLING

	// Lightweight event framework. on/off also work on DOM nodes,
	// registering native DOM handlers.

	var on = CodeMirror.on = function(emitter, type, f) {
	if (emitter.addEventListener)
	emitter.addEventListener(type, f, false);
	else if (emitter.attachEvent)
	emitter.attachEvent("on" + type, f);
	else {
	var map = emitter._handlers \|\| (emitter._handlers = {});
	var arr = map[type] \|\| (map[type] = []);
	arr.push(f);
	}
	};

	var noHandlers = []
	function getHandlers(emitter, type, copy) {
	var arr = emitter._handlers && emitter._handlers[type]
	if (copy) return arr && arr.length > 0 ? arr.slice() : noHandlers
	else return arr \|\| noHandlers
	}

	var off = CodeMirror.off = function(emitter, type, f) {
	if (emitter.removeEventListener)
	emitter.removeEventListener(type, f, false);
	else if (emitter.detachEvent)
	emitter.detachEvent("on" + type, f);
	else {
	var handlers = getHandlers(emitter, type, false)
	for (var i = 0; i < handlers.length; ++i)
	if (handlers[i] == f) { handlers.splice(i, 1); break; }
	}
	};

	var signal = CodeMirror.signal = function(emitter, type /, values.../) {
	var handlers = getHandlers(emitter, type, true)
	if (!handlers.length) return;
	var args = Array.prototype.slice.call(arguments, 2);
	for (var i = 0; i < handlers.length; ++i) handlers[i].apply(null, args);
	};

	var orphanDelayedCallbacks = null;

	// Often, we want to signal events at a point where we are in the
	// middle of some work, but don't want the handler to start calling
	// other methods on the editor, which might be in an inconsistent
	// state or simply not expect any other events to happen.
	// signalLater looks whether there are any handlers, and schedules
	// them to be executed when the last operation ends, or, if no
	// operation is active, when a timeout fires.
	function signalLater(emitter, type /, values.../) {
	var arr = getHandlers(emitter, type, false)
	if (!arr.length) return;
	var args = Array.prototype.slice.call(arguments, 2), list;
	if (operationGroup) {
	list = operationGroup.delayedCallbacks;
	} else if (orphanDelayedCallbacks) {
	list = orphanDelayedCallbacks;
	} else {
	list = orphanDelayedCallbacks = [];
	setTimeout(fireOrphanDelayed, 0);
	}
	function bnd(f) {return function(){f.apply(null, args);};};
	for (var i = 0; i < arr.length; ++i)
	list.push(bnd(arr[i]));
	}

	function fireOrphanDelayed() {
	var delayed = orphanDelayedCallbacks;
	orphanDelayedCallbacks = null;
	for (var i = 0; i < delayed.length; ++i) delayed[i]();
	}

	// The DOM events that CodeMirror handles can be overridden by
	// registering a (non-DOM) handler on the editor for the event name,
	// and preventDefault-ing the event in that handler.
	function signalDOMEvent(cm, e, override) {
	if (typeof e == "string")
	e = {type: e, preventDefault: function() { this.defaultPrevented = true; }};
	signal(cm, override \|\| e.type, cm, e);
	return e_defaultPrevented(e) \|\| e.codemirrorIgnore;
	}

	function signalCursorActivity(cm) {
	var arr = cm._handlers && cm._handlers.cursorActivity;
	if (!arr) return;
	var set = cm.curOp.cursorActivityHandlers \|\| (cm.curOp.cursorActivityHandlers = []);
	for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1)
	set.push(arr[i]);
	}

	function hasHandler(emitter, type) {
	return getHandlers(emitter, type).length > 0
	}

	// Add on and off methods to a constructor's prototype, to make
	// registering events on such objects more convenient.
	function eventMixin(ctor) {
	ctor.prototype.on = function(type, f) {on(this, type, f);};
	ctor.prototype.off = function(type, f) {off(this, type, f);};
	}

	// MISC UTILITIES

	// Number of pixels added to scroller and sizer to hide scrollbar
	var scrollerGap = 30;

	// Returned or thrown by various protocols to signal 'I'm not
	// handling this'.
	var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};

	// Reused option objects for setSelection & friends
	var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};

	function Delayed() {this.id = null;}
	Delayed.prototype.set = function(ms, f) {
	clearTimeout(this.id);
	this.id = setTimeout(f, ms);
	};

	// Counts the column offset in a string, taking tabs into account.
	// Used mostly to find indentation.
	var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) {
	if (end == null) {
	end = string.search(/[^\s\u00a0]/);
	if (end == -1) end = string.length;
	}
	for (var i = startIndex \|\| 0, n = startValue \|\| 0;;) {
	var nextTab = string.indexOf("\t", i);
	if (nextTab < 0 \|\| nextTab >= end)
	return n + (end - i);
	n += nextTab - i;
	n += tabSize - (n % tabSize);
	i = nextTab + 1;
	}
	};

	// The inverse of countColumn -- find the offset that corresponds to
	// a particular column.
	var findColumn = CodeMirror.findColumn = function(string, goal, tabSize) {
	for (var pos = 0, col = 0;;) {
	var nextTab = string.indexOf("\t", pos);
	if (nextTab == -1) nextTab = string.length;
	var skipped = nextTab - pos;
	if (nextTab == string.length \|\| col + skipped >= goal)
	return pos + Math.min(skipped, goal - col);
	col += nextTab - pos;
	col += tabSize - (col % tabSize);
	pos = nextTab + 1;
	if (col >= goal) return pos;
	}
	}

	var spaceStrs = [""];
	function spaceStr(n) {
	while (spaceStrs.length <= n)
	spaceStrs.push(lst(spaceStrs) + " ");
	return spaceStrs[n];
	}

	function lst(arr) { return arr[arr.length-1]; }

	var selectInput = function(node) { node.select(); };
	if (ios) // Mobile Safari apparently has a bug where select() is broken.
	selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; };
	else if (ie) // Suppress mysterious IE10 errors
	selectInput = function(node) { try { node.select(); } catch(_e) {} };

	function indexOf(array, elt) {
	for (var i = 0; i < array.length; ++i)
	if (array[i] == elt) return i;
	return -1;
	}
	function map(array, f) {
	var out = [];
	for (var i = 0; i < array.length; i++) out[i] = f(array[i], i);
	return out;
	}

	function nothing() {}

	function createObj(base, props) {
	var inst;
	if (Object.create) {
	inst = Object.create(base);
	} else {
	nothing.prototype = base;
	inst = new nothing();
	}
	if (props) copyObj(props, inst);
	return inst;
	};

	function copyObj(obj, target, overwrite) {
	if (!target) target = {};
	for (var prop in obj)
	if (obj.hasOwnProperty(prop) && (overwrite !== false \|\| !target.hasOwnProperty(prop)))
	target[prop] = obj[prop];
	return target;
	}

	function bind(f) {
	var args = Array.prototype.slice.call(arguments, 1);
	return function(){return f.apply(null, args);};
	}

	var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
	var isWordCharBasic = CodeMirror.isWordChar = function(ch) {
	return /\w/.test(ch) \|\| ch > "\x80" &&
	(ch.toUpperCase() != ch.toLowerCase() \|\| nonASCIISingleCaseWordChar.test(ch));
	};
	function isWordChar(ch, helper) {
	if (!helper) return isWordCharBasic(ch);
	if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) return true;
	return helper.test(ch);
	}

	function isEmpty(obj) {
	for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
	return true;
	}

	// Extending unicode characters. A series of a non-extending char +
	// any number of extending chars is treated as a single unit as far
	// as editing and measuring is concerned. This is not fully correct,
	// since some scripts/fonts/browsers also treat other configurations
	// of code points as a group.
	var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
	function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); }

	// DOM UTILITIES

	function elt(tag, content, className, style) {
	var e = document.createElement(tag);
	if (className) e.className = className;
	if (style) e.style.cssText = style;
	if (typeof content == "string") e.appendChild(document.createTextNode(content));
	else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
	return e;
	}

	var range;
	if (document.createRange) range = function(node, start, end, endNode) {
	var r = document.createRange();
	r.setEnd(endNode \|\| node, end);
	r.setStart(node, start);
	return r;
	};
	else range = function(node, start, end) {
	var r = document.body.createTextRange();
	try { r.moveToElementText(node.parentNode); }
	catch(e) { return r; }
	r.collapse(true);
	r.moveEnd("character", end);
	r.moveStart("character", start);
	return r;
	};

	function removeChildren(e) {
	for (var count = e.childNodes.length; count > 0; --count)
	e.removeChild(e.firstChild);
	return e;
	}

	function removeChildrenAndAdd(parent, e) {
	return removeChildren(parent).appendChild(e);
	}

	var contains = CodeMirror.contains = function(parent, child) {
	if (child.nodeType == 3) // Android browser always returns false when child is a textnode
	child = child.parentNode;
	if (parent.contains)
	return parent.contains(child);
	do {
	if (child.nodeType == 11) child = child.host;
	if (child == parent) return true;
	} while (child = child.parentNode);
	};

	function activeElt() {
	var activeElement = document.activeElement;
	while (activeElement && activeElement.root && activeElement.root.activeElement)
	activeElement = activeElement.root.activeElement;
	return activeElement;
	}
	// Older versions of IE throws unspecified error when touching
	// document.activeElement in some cases (during loading, in iframe)
	if (ie && ie_version < 11) activeElt = function() {
	try { return document.activeElement; }
	catch(e) { return document.body; }
	};

	function classTest(cls) { return new RegExp("(^\|\\s)" + cls + "(?:$\|\\s)\\s*"); }
	var rmClass = CodeMirror.rmClass = function(node, cls) {
	var current = node.className;
	var match = classTest(cls).exec(current);
	if (match) {
	var after = current.slice(match.index + match[0].length);
	node.className = current.slice(0, match.index) + (after ? match[1] + after : "");
	}
	};
	var addClass = CodeMirror.addClass = function(node, cls) {
	var current = node.className;
	if (!classTest(cls).test(current)) node.className += (current ? " " : "") + cls;
	};
	function joinClasses(a, b) {
	var as = a.split(" ");
	for (var i = 0; i < as.length; i++)
	if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i];
	return b;
	}

	// WINDOW-WIDE EVENTS

	// These must be handled carefully, because naively registering a
	// handler for each editor will cause the editors to never be
	// garbage collected.

	function forEachCodeMirror(f) {
	if (!document.body.getElementsByClassName) return;
	var byClass = document.body.getElementsByClassName("CodeMirror");
	for (var i = 0; i < byClass.length; i++) {
	var cm = byClass[i].CodeMirror;
	if (cm) f(cm);
	}
	}

	var globalsRegistered = false;
	function ensureGlobalHandlers() {
	if (globalsRegistered) return;
	registerGlobalHandlers();
	globalsRegistered = true;
	}
	function registerGlobalHandlers() {
	// When the window resizes, we need to refresh active editors.
	var resizeTimer;
	on(window, "resize", function() {
	if (resizeTimer == null) resizeTimer = setTimeout(function() {
	resizeTimer = null;
	forEachCodeMirror(onResize);
	}, 100);
	});
	// When the window loses focus, we want to show the editor as blurred
	on(window, "blur", function() {
	forEachCodeMirror(onBlur);
	});
	}

	// FEATURE DETECTION

	// Detect drag-and-drop
	var dragAndDrop = function() {
	// There is some kind of drag-and-drop support in IE6-8, but I
	// couldn't get it to work yet.
	if (ie && ie_version < 9) return false;
	var div = elt('div');
	return "draggable" in div \|\| "dragDrop" in div;
	}();

	var zwspSupported;
	function zeroWidthElement(measure) {
	if (zwspSupported == null) {
	var test = elt("span", "\u200b");
	removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
	if (measure.firstChild.offsetHeight != 0)
	zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8);
	}
	var node = zwspSupported ? elt("span", "\u200b") :
	elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
	node.setAttribute("cm-text", "");
	return node;
	}

	// Feature-detect IE's crummy client rect reporting for bidi text
	var badBidiRects;
	function hasBadBidiRects(measure) {
	if (badBidiRects != null) return badBidiRects;
	var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
	var r0 = range(txt, 0, 1).getBoundingClientRect();
	if (!r0 \|\| r0.left == r0.right) return false; // Safari returns null in some cases (#2780)
	var r1 = range(txt, 1, 2).getBoundingClientRect();
	return badBidiRects = (r1.right - r0.right < 3);
	}

	// See if "".split is the broken IE version, if so, provide an
	// alternative way to split lines.
	var splitLinesAuto = CodeMirror.splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
	var pos = 0, result = [], l = string.length;
	while (pos <= l) {
	var nl = string.indexOf("\n", pos);
	if (nl == -1) nl = string.length;
	var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
	var rt = line.indexOf("\r");
	if (rt != -1) {
	result.push(line.slice(0, rt));
	pos += rt + 1;
	} else {
	result.push(line);
	pos = nl + 1;
	}
	}
	return result;
	} : function(string){return string.split(/\r\n?\|\n/);};

	var hasSelection = window.getSelection ? function(te) {
	try { return te.selectionStart != te.selectionEnd; }
	catch(e) { return false; }
	} : function(te) {
	try {var range = te.ownerDocument.selection.createRange();}
	catch(e) {}
	if (!range \|\| range.parentElement() != te) return false;
	return range.compareEndPoints("StartToEnd", range) != 0;
	};

	var hasCopyEvent = (function() {
	var e = elt("div");
	if ("oncopy" in e) return true;
	e.setAttribute("oncopy", "return;");
	return typeof e.oncopy == "function";
	})();

	var badZoomedRects = null;
	function hasBadZoomedRects(measure) {
	if (badZoomedRects != null) return badZoomedRects;
	var node = removeChildrenAndAdd(measure, elt("span", "x"));
	var normal = node.getBoundingClientRect();
	var fromRange = range(node, 0, 1).getBoundingClientRect();
	return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1;
	}

	// KEY NAMES

	var keyNames = CodeMirror.keyNames = {
	3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
	19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
	36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
	46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod",
	106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 127: "Delete",
	173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
	221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
	63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"
	};
	(function() {
	// Number keys
	for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i);
	// Alphabetic keys
	for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
	// Function keys
	for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
	})();

	// BIDI HELPERS

	function iterateBidiSections(order, from, to, f) {
	if (!order) return f(from, to, "ltr");
	var found = false;
	for (var i = 0; i < order.length; ++i) {
	var part = order[i];
	if (part.from < to && part.to > from \|\| from == to && part.to == from) {
	f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
	found = true;
	}
	}
	if (!found) f(from, to, "ltr");
	}

	function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
	function bidiRight(part) { return part.level % 2 ? part.from : part.to; }

	function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
	function lineRight(line) {
	var order = getOrder(line);
	if (!order) return line.text.length;
	return bidiRight(lst(order));
	}

	function lineStart(cm, lineN) {
	var line = getLine(cm.doc, lineN);
	var visual = visualLine(line);
	if (visual != line) lineN = lineNo(visual);
	var order = getOrder(visual);
	var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
	return Pos(lineN, ch);
	}
	function lineEnd(cm, lineN) {
	var merged, line = getLine(cm.doc, lineN);
	while (merged = collapsedSpanAtEnd(line)) {
	line = merged.find(1, true).line;
	lineN = null;
	}
	var order = getOrder(line);
	var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
	return Pos(lineN == null ? lineNo(line) : lineN, ch);
	}
	function lineStartSmart(cm, pos) {
	var start = lineStart(cm, pos.line);
	var line = getLine(cm.doc, start.line);
	var order = getOrder(line);
	if (!order \|\| order[0].level == 0) {
	var firstNonWS = Math.max(0, line.text.search(/\S/));
	var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;
	return Pos(start.line, inWS ? 0 : firstNonWS);
	}
	return start;
	}

	function compareBidiLevel(order, a, b) {
	var linedir = order[0].level;
	if (a == linedir) return true;
	if (b == linedir) return false;
	return a < b;
	}
	var bidiOther;
	function getBidiPartAt(order, pos) {
	bidiOther = null;
	for (var i = 0, found; i < order.length; ++i) {
	var cur = order[i];
	if (cur.from < pos && cur.to > pos) return i;
	if ((cur.from == pos \|\| cur.to == pos)) {
	if (found == null) {
	found = i;
	} else if (compareBidiLevel(order, cur.level, order[found].level)) {
	if (cur.from != cur.to) bidiOther = found;
	return i;
	} else {
	if (cur.from != cur.to) bidiOther = i;
	return found;
	}
	}
	}
	return found;
	}

	function moveInLine(line, pos, dir, byUnit) {
	if (!byUnit) return pos + dir;
	do pos += dir;
	while (pos > 0 && isExtendingChar(line.text.charAt(pos)));
	return pos;
	}

	// This is needed in order to move 'visually' through bi-directional
	// text -- i.e., pressing left should make the cursor go left, even
	// when in RTL text. The tricky part is the 'jumps', where RTL and
	// LTR text touch each other. This often requires the cursor offset
	// to move more than one unit, in order to visually move one unit.
	function moveVisually(line, start, dir, byUnit) {
	var bidi = getOrder(line);
	if (!bidi) return moveLogically(line, start, dir, byUnit);
	var pos = getBidiPartAt(bidi, start), part = bidi[pos];
	var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);

	for (;;) {
	if (target > part.from && target < part.to) return target;
	if (target == part.from \|\| target == part.to) {
	if (getBidiPartAt(bidi, target) == pos) return target;
	part = bidi[pos += dir];
	return (dir > 0) == part.level % 2 ? part.to : part.from;
	} else {
	part = bidi[pos += dir];
	if (!part) return null;
	if ((dir > 0) == part.level % 2)
	target = moveInLine(line, part.to, -1, byUnit);
	else
	target = moveInLine(line, part.from, 1, byUnit);
	}
	}
	}

	function moveLogically(line, start, dir, byUnit) {
	var target = start + dir;
	if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir;
	return target < 0 \|\| target > line.text.length ? null : target;
	}

	// Bidirectional ordering algorithm
	// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
	// that this (partially) implements.

	// One-char codes used for character types:
	// L (L): Left-to-Right
	// R (R): Right-to-Left
	// r (AL): Right-to-Left Arabic
	// 1 (EN): European Number
	// + (ES): European Number Separator
	// % (ET): European Number Terminator
	// n (AN): Arabic Number
	// , (CS): Common Number Separator
	// m (NSM): Non-Spacing Mark
	// b (BN): Boundary Neutral
	// s (B): Paragraph Separator
	// t (S): Segment Separator
	// w (WS): Whitespace
	// N (ON): Other Neutrals

	// Returns null if characters are ordered as they appear
	// (left-to-right), or an array of sections ({from, to, level}
	// objects) in the order in which they occur visually.
	var bidiOrdering = (function() {
	// Character types for codepoints 0 to 0xff
	var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
	// Character types for codepoints 0x600 to 0x6ff
	var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm";
	function charType(code) {
	if (code <= 0xf7) return lowTypes.charAt(code);
	else if (0x590 <= code && code <= 0x5f4) return "R";
	else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600);
	else if (0x6ee <= code && code <= 0x8ac) return "r";
	else if (0x2000 <= code && code <= 0x200b) return "w";
	else if (code == 0x200c) return "b";
	else return "L";
	}

	var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
	var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
	// Browsers seem to always treat the boundaries of block elements as being L.
	var outerType = "L";

	function BidiSpan(level, from, to) {
	this.level = level;
	this.from = from; this.to = to;
	}

	return function(str) {
	if (!bidiRE.test(str)) return false;
	var len = str.length, types = [];
	for (var i = 0, type; i < len; ++i)
	types.push(type = charType(str.charCodeAt(i)));

	// W1. Examine each non-spacing mark (NSM) in the level run, and
	// change the type of the NSM to the type of the previous
	// character. If the NSM is at the start of the level run, it will
	// get the type of sor.
	for (var i = 0, prev = outerType; i < len; ++i) {
	var type = types[i];
	if (type == "m") types[i] = prev;
	else prev = type;
	}

	// W2. Search backwards from each instance of a European number
	// until the first strong type (R, L, AL, or sor) is found. If an
	// AL is found, change the type of the European number to Arabic
	// number.
	// W3. Change all ALs to R.
	for (var i = 0, cur = outerType; i < len; ++i) {
	var type = types[i];
	if (type == "1" && cur == "r") types[i] = "n";
	else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
	}

	// W4. A single European separator between two European numbers
	// changes to a European number. A single common separator between
	// two numbers of the same type changes to that type.
	for (var i = 1, prev = types[0]; i < len - 1; ++i) {
	var type = types[i];
	if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
	else if (type == "," && prev == types[i+1] &&
	(prev == "1" \|\| prev == "n")) types[i] = prev;
	prev = type;
	}

	// W5. A sequence of European terminators adjacent to European
	// numbers changes to all European numbers.
	// W6. Otherwise, separators and terminators change to Other
	// Neutral.
	for (var i = 0; i < len; ++i) {
	var type = types[i];
	if (type == ",") types[i] = "N";
	else if (type == "%") {
	for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
	var replace = (i && types[i-1] == "!") \|\| (end < len && types[end] == "1") ? "1" : "N";
	for (var j = i; j < end; ++j) types[j] = replace;
	i = end - 1;
	}
	}

	// W7. Search backwards from each instance of a European number
	// until the first strong type (R, L, or sor) is found. If an L is
	// found, then change the type of the European number to L.
	for (var i = 0, cur = outerType; i < len; ++i) {
	var type = types[i];
	if (cur == "L" && type == "1") types[i] = "L";
	else if (isStrong.test(type)) cur = type;
	}

	// N1. A sequence of neutrals takes the direction of the
	// surrounding strong text if the text on both sides has the same
	// direction. European and Arabic numbers act as if they were R in
	// terms of their influence on neutrals. Start-of-level-run (sor)
	// and end-of-level-run (eor) are used at level run boundaries.
	// N2. Any remaining neutrals take the embedding direction.
	for (var i = 0; i < len; ++i) {
	if (isNeutral.test(types[i])) {
	for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
	var before = (i ? types[i-1] : outerType) == "L";
	var after = (end < len ? types[end] : outerType) == "L";
	var replace = before \|\| after ? "L" : "R";
	for (var j = i; j < end; ++j) types[j] = replace;
	i = end - 1;
	}
	}

	// Here we depart from the documented algorithm, in order to avoid
	// building up an actual levels array. Since there are only three
	// levels (0, 1, 2) in an implementation that doesn't take
	// explicit embedding into account, we can build up the order on
	// the fly, without following the level-based algorithm.
	var order = [], m;
	for (var i = 0; i < len;) {
	if (countsAsLeft.test(types[i])) {
	var start = i;
	for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
	order.push(new BidiSpan(0, start, i));
	} else {
	var pos = i, at = order.length;
	for (++i; i < len && types[i] != "L"; ++i) {}
	for (var j = pos; j < i;) {
	if (countsAsNum.test(types[j])) {
	if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j));
	var nstart = j;
	for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
	order.splice(at, 0, new BidiSpan(2, nstart, j));
	pos = j;
	} else ++j;
	}
	if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i));
	}
	}
	if (order[0].level == 1 && (m = str.match(/^\s+/))) {
	order[0].from = m[0].length;
	order.unshift(new BidiSpan(0, 0, m[0].length));
	}
	if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
	lst(order).to -= m[0].length;
	order.push(new BidiSpan(0, len - m[0].length, len));
	}
	if (order[0].level == 2)
	order.unshift(new BidiSpan(1, order[0].to, order[0].to));
	if (order[0].level != lst(order).level)
	order.push(new BidiSpan(order[0].level, len, len));

	return order;
	};
	})();

	// THE END

	CodeMirror.version = "5.9.1";

	return CodeMirror;
	});

	},{}],7:[function(require,module,exports){
	// CodeMirror, copyright (c) by Marijn Haverbeke and others
	// Distributed under an MIT license: http://codemirror.net/LICENSE

	(function(mod) {
	if (typeof exports == "object" && typeof module == "object") // CommonJS
	mod(require("../../lib/codemirror"), require("../markdown/markdown"), require("../../addon/mode/overlay"));
	else if (typeof define == "function" && define.amd) // AMD
	define(["../../lib/codemirror", "../markdown/markdown", "../../addon/mode/overlay"], mod);
	else // Plain browser env
	mod(CodeMirror);
	})(function(CodeMirror) {
	"use strict";

	var urlRE = /^((?:(?:aaas?\|about\|acap\|adiumxtra\|af[ps]\|aim\|apt\|attachment\|aw\|beshare\|bitcoin\|bolo\|callto\|cap\|chrome(?:-extension)?\|cid\|coap\|com-eventbrite-attendee\|content\|crid\|cvs\|data\|dav\|dict\|dlna-(?:playcontainer\|playsingle)\|dns\|doi\|dtn\|dvb\|ed2k\|facetime\|feed\|file\|finger\|fish\|ftp\|geo\|gg\|git\|gizmoproject\|go\|gopher\|gtalk\|h323\|hcp\|https?\|iax\|icap\|icon\|im\|imap\|info\|ipn\|ipp\|irc[6s]?\|iris(?:\.beep\|\.lwz\|\.xpc\|\.xpcs)?\|itms\|jar\|javascript\|jms\|keyparc\|lastfm\|ldaps?\|magnet\|mailto\|maps\|market\|message\|mid\|mms\|ms-help\|msnim\|msrps?\|mtqp\|mumble\|mupdate\|mvn\|news\|nfs\|nih?\|nntp\|notes\|oid\|opaquelocktoken\|palm\|paparazzi\|platform\|pop\|pres\|proxy\|psyc\|query\|res(?:ource)?\|rmi\|rsync\|rtmp\|rtsp\|secondlife\|service\|session\|sftp\|sgn\|shttp\|sieve\|sips?\|skype\|sm[bs]\|snmp\|soap\.beeps?\|soldat\|spotify\|ssh\|steam\|svn\|tag\|teamspeak\|tel(?:net)?\|tftp\|things\|thismessage\|tip\|tn3270\|tv\|udp\|unreal\|urn\|ut2004\|vemmi\|ventrilo\|view-source\|webcal\|wss?\|wtai\|wyciwyg\|xcon(?:-userid)?\|xfire\|xmlrpc\.beeps?\|xmpp\|xri\|ymsgr\|z39\.50[rs]?):(?:\/{1,3}\|[a-z0-9%])\|www\d{0,3}[.]\|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]\|$[^\s()<>]$)+(?:$[^\s()<>]$\|[^\s`*!()\[\]{};:'".,<>?«»“”‘’]))/i

	CodeMirror.defineMode("gfm", function(config, modeConfig) {
	var codeDepth = 0;
	function blankLine(state) {
	state.code = false;
	return null;
	}
	var gfmOverlay = {
	startState: function() {
	return {
	code: false,
	codeBlock: false,
	ateSpace: false
	};
	},
	copyState: function(s) {
	return {
	code: s.code,
	codeBlock: s.codeBlock,
	ateSpace: s.ateSpace
	};
	},
	token: function(stream, state) {
	state.combineTokens = null;

	// Hack to prevent formatting override inside code blocks (block and inline)
	if (state.codeBlock) {
	if (stream.match(/^```+/)) {
	state.codeBlock = false;
	return null;
	}
	stream.skipToEnd();
	return null;
	}
	if (stream.sol()) {
	state.code = false;
	}
	if (stream.sol() && stream.match(/^```+/)) {
	stream.skipToEnd();
	state.codeBlock = true;
	return null;
	}
	// If this block is changed, it may need to be updated in Markdown mode
	if (stream.peek() === '`') {
	stream.next();
	var before = stream.pos;
	stream.eatWhile('`');
	var difference = 1 + stream.pos - before;
	if (!state.code) {
	codeDepth = difference;
	state.code = true;
	} else {
	if (difference === codeDepth) { // Must be exact
	state.code = false;
	}
	}
	return null;
	} else if (state.code) {
	stream.next();
	return null;
	}
	// Check if space. If so, links can be formatted later on
	if (stream.eatSpace()) {
	state.ateSpace = true;
	return null;
	}
	if (stream.sol() \|\| state.ateSpace) {
	state.ateSpace = false;
	if (modeConfig.gitHubSpice !== false) {
	if(stream.match(/^(?:[a-zA-Z0-9\-_]+\/)?(?:[a-zA-Z0-9\-_]+@)?(?:[a-f0-9]{7,40}\b)/)) {
	// User/Project@SHA
	// User@SHA
	// SHA
	state.combineTokens = true;
	return "link";
	} else if (stream.match(/^(?:[a-zA-Z0-9\-_]+\/)?(?:[a-zA-Z0-9\-_]+)?#[0-9]+\b/)) {
	// User/Project#Num
	// User#Num
	// #Num
	state.combineTokens = true;
	return "link";
	}
	}
	}
	if (stream.match(urlRE) &&
	stream.string.slice(stream.start - 2, stream.start) != "](" &&
	(stream.start == 0 \|\| /\W/.test(stream.string.charAt(stream.start - 1)))) {
	// URLs
	// Taken from http://daringfireball.net/2010/07/improved_regex_for_matching_urls
	// And then (issue #1160) simplified to make it not crash the Chrome Regexp engine
	// And then limited url schemes to the CommonMark list, so foo:bar isn't matched as a URL
	state.combineTokens = true;
	return "link";
	}
	stream.next();
	return null;
	},
	blankLine: blankLine
	};

	var markdownConfig = {
	underscoresBreakWords: false,
	taskLists: true,
	fencedCodeBlocks: '```',
	strikethrough: true
	};
	for (var attr in modeConfig) {
	markdownConfig[attr] = modeConfig[attr];
	}
	markdownConfig.name = "markdown";
	return CodeMirror.overlayMode(CodeMirror.getMode(config, markdownConfig), gfmOverlay);

	}, "markdown");

	CodeMirror.defineMIME("text/x-gfm", "gfm");
	});

	},{"../../addon/mode/overlay":5,"../../lib/codemirror":6,"../markdown/markdown":8}],8:[function(require,module,exports){
	// CodeMirror, copyright (c) by Marijn Haverbeke and others
	// Distributed under an MIT license: http://codemirror.net/LICENSE

	(function(mod) {
	if (typeof exports == "object" && typeof module == "object") // CommonJS
	mod(require("../../lib/codemirror"), require("../xml/xml"), require("../meta"));
	else if (typeof define == "function" && define.amd) // AMD
	define(["../../lib/codemirror", "../xml/xml", "../meta"], mod);
	else // Plain browser env
	mod(CodeMirror);
	})(function(CodeMirror) {
	"use strict";

	CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {

	var htmlFound = CodeMirror.modes.hasOwnProperty("xml");
	var htmlMode = CodeMirror.getMode(cmCfg, htmlFound ? {name: "xml", htmlMode: true} : "text/plain");

	function getMode(name) {
	if (CodeMirror.findModeByName) {
	var found = CodeMirror.findModeByName(name);
	if (found) name = found.mime \|\| found.mimes[0];
	}
	var mode = CodeMirror.getMode(cmCfg, name);
	return mode.name == "null" ? null : mode;
	}

	// Should characters that affect highlighting be highlighted separate?
	// Does not include characters that will be output (such as `1.` and `-` for lists)
	if (modeCfg.highlightFormatting === undefined)
	modeCfg.highlightFormatting = false;

	// Maximum number of nested blockquotes. Set to 0 for infinite nesting.
	// Excess `>` will emit `error` token.
	if (modeCfg.maxBlockquoteDepth === undefined)
	modeCfg.maxBlockquoteDepth = 0;

	// Should underscores in words open/close em/strong?
	if (modeCfg.underscoresBreakWords === undefined)
	modeCfg.underscoresBreakWords = true;

	// Use `fencedCodeBlocks` to configure fenced code blocks. false to
	// disable, string to specify a precise regexp that the fence should
	// match, and true to allow three or more backticks or tildes (as
	// per CommonMark).

	// Turn on task lists? ("- [ ] " and "- [x] ")
	if (modeCfg.taskLists === undefined) modeCfg.taskLists = false;

	// Turn on strikethrough syntax
	if (modeCfg.strikethrough === undefined)
	modeCfg.strikethrough = false;

	// Allow token types to be overridden by user-provided token types.
	if (modeCfg.tokenTypeOverrides === undefined)
	modeCfg.tokenTypeOverrides = {};

	var codeDepth = 0;

	var tokenTypes = {
	header: "header",
	code: "comment",
	quote: "quote",
	list1: "variable-2",
	list2: "variable-3",
	list3: "keyword",
	hr: "hr",
	image: "tag",
	formatting: "formatting",
	linkInline: "link",
	linkEmail: "link",
	linkText: "link",
	linkHref: "string",
	em: "em",
	strong: "strong",
	strikethrough: "strikethrough"
	};

	for (var tokenType in tokenTypes) {
	if (tokenTypes.hasOwnProperty(tokenType) && modeCfg.tokenTypeOverrides[tokenType]) {
	tokenTypes[tokenType] = modeCfg.tokenTypeOverrides[tokenType];
	}
	}

	var hrRE = /^([\-_])(?:\s\1){2,}\s*$/
	, ulRE = /^[*\-+]\s+/
	, olRE = /^[0-9]+([.)])\s+/
	, taskListRE = /^\[(x\| )\](?=\s)/ // Must follow ulRE or olRE
	, atxHeaderRE = modeCfg.allowAtxHeaderWithoutSpace ? /^(#+)/ : /^(#+)(?: \|$)/
	, setextHeaderRE = /^ (?:\={1,}\|-{1,})\s$/
	, textRE = /^[^#!\[\]*_\\<>` "'(~]+/
	, fencedCodeRE = new RegExp("^(" + (modeCfg.fencedCodeBlocks === true ? "~~~+\|```+" : modeCfg.fencedCodeBlocks) +
	")[ \\t]([\\w+#])");

	function switchInline(stream, state, f) {
	state.f = state.inline = f;
	return f(stream, state);
	}

	function switchBlock(stream, state, f) {
	state.f = state.block = f;
	return f(stream, state);
	}

	function lineIsEmpty(line) {
	return !line \|\| !/\S/.test(line.string)
	}

	// Blocks

	function blankLine(state) {
	// Reset linkTitle state
	state.linkTitle = false;
	// Reset EM state
	state.em = false;
	// Reset STRONG state
	state.strong = false;
	// Reset strikethrough state
	state.strikethrough = false;
	// Reset state.quote
	state.quote = 0;
	// Reset state.indentedCode
	state.indentedCode = false;
	if (!htmlFound && state.f == htmlBlock) {
	state.f = inlineNormal;
	state.block = blockNormal;
	}
	// Reset state.trailingSpace
	state.trailingSpace = 0;
	state.trailingSpaceNewLine = false;
	// Mark this line as blank
	state.prevLine = state.thisLine
	state.thisLine = null
	return null;
	}

	function blockNormal(stream, state) {

	var sol = stream.sol();

	var prevLineIsList = state.list !== false,
	prevLineIsIndentedCode = state.indentedCode;

	state.indentedCode = false;

	if (prevLineIsList) {
	if (state.indentationDiff >= 0) { // Continued list
	if (state.indentationDiff < 4) { // Only adjust indentation if not a code block
	state.indentation -= state.indentationDiff;
	}
	state.list = null;
	} else if (state.indentation > 0) {
	state.list = null;
	state.listDepth = Math.floor(state.indentation / 4);
	} else { // No longer a list
	state.list = false;
	state.listDepth = 0;
	}
	}

	var match = null;
	if (state.indentationDiff >= 4) {
	stream.skipToEnd();
	if (prevLineIsIndentedCode \|\| lineIsEmpty(state.prevLine)) {
	state.indentation -= 4;
	state.indentedCode = true;
	return tokenTypes.code;
	} else {
	return null;
	}
	} else if (stream.eatSpace()) {
	return null;
	} else if ((match = stream.match(atxHeaderRE)) && match[1].length <= 6) {
	state.header = match[1].length;
	if (modeCfg.highlightFormatting) state.formatting = "header";
	state.f = state.inline;
	return getType(state);
	} else if (!lineIsEmpty(state.prevLine) && !state.quote && !prevLineIsList &&
	!prevLineIsIndentedCode && (match = stream.match(setextHeaderRE))) {
	state.header = match[0].charAt(0) == '=' ? 1 : 2;
	if (modeCfg.highlightFormatting) state.formatting = "header";
	state.f = state.inline;
	return getType(state);
	} else if (stream.eat('>')) {
	state.quote = sol ? 1 : state.quote + 1;
	if (modeCfg.highlightFormatting) state.formatting = "quote";
	stream.eatSpace();
	return getType(state);
	} else if (stream.peek() === '[') {
	return switchInline(stream, state, footnoteLink);
	} else if (stream.match(hrRE, true)) {
	state.hr = true;
	return tokenTypes.hr;
	} else if ((lineIsEmpty(state.prevLine) \|\| prevLineIsList) && (stream.match(ulRE, false) \|\| stream.match(olRE, false))) {
	var listType = null;
	if (stream.match(ulRE, true)) {
	listType = 'ul';
	} else {
	stream.match(olRE, true);
	listType = 'ol';
	}
	state.indentation = stream.column() + stream.current().length;
	state.list = true;
	state.listDepth++;
	if (modeCfg.taskLists && stream.match(taskListRE, false)) {
	state.taskList = true;
	}
	state.f = state.inline;
	if (modeCfg.highlightFormatting) state.formatting = ["list", "list-" + listType];
	return getType(state);
	} else if (modeCfg.fencedCodeBlocks && (match = stream.match(fencedCodeRE, true))) {
	state.fencedChars = match[1]
	// try switching mode
	state.localMode = getMode(match[2]);
	if (state.localMode) state.localState = state.localMode.startState();
	state.f = state.block = local;
	if (modeCfg.highlightFormatting) state.formatting = "code-block";
	state.code = true;
	return getType(state);
	}

	return switchInline(stream, state, state.inline);
	}

	function htmlBlock(stream, state) {
	var style = htmlMode.token(stream, state.htmlState);
	if ((htmlFound && state.htmlState.tagStart === null &&
	(!state.htmlState.context && state.htmlState.tokenize.isInText)) \|\|
	(state.md_inside && stream.current().indexOf(">") > -1)) {
	state.f = inlineNormal;
	state.block = blockNormal;
	state.htmlState = null;
	}
	return style;
	}

	function local(stream, state) {
	if (stream.sol() && state.fencedChars && stream.match(state.fencedChars, false)) {
	state.localMode = state.localState = null;
	state.f = state.block = leavingLocal;
	return null;
	} else if (state.localMode) {
	return state.localMode.token(stream, state.localState);
	} else {
	stream.skipToEnd();
	return tokenTypes.code;
	}
	}

	function leavingLocal(stream, state) {
	stream.match(state.fencedChars);
	state.block = blockNormal;
	state.f = inlineNormal;
	state.fencedChars = null;
	if (modeCfg.highlightFormatting) state.formatting = "code-block";
	state.code = true;
	var returnType = getType(state);
	state.code = false;
	return returnType;
	}

	// Inline
	function getType(state) {
	var styles = [];

	if (state.formatting) {
	styles.push(tokenTypes.formatting);

	if (typeof state.formatting === "string") state.formatting = [state.formatting];

	for (var i = 0; i < state.formatting.length; i++) {
	styles.push(tokenTypes.formatting + "-" + state.formatting[i]);

	if (state.formatting[i] === "header") {
	styles.push(tokenTypes.formatting + "-" + state.formatting[i] + "-" + state.header);
	}

	// Add `formatting-quote` and `formatting-quote-#` for blockquotes
	// Add `error` instead if the maximum blockquote nesting depth is passed
	if (state.formatting[i] === "quote") {
	if (!modeCfg.maxBlockquoteDepth \|\| modeCfg.maxBlockquoteDepth >= state.quote) {
	styles.push(tokenTypes.formatting + "-" + state.formatting[i] + "-" + state.quote);
	} else {
	styles.push("error");
	}
	}
	}
	}

	if (state.taskOpen) {
	styles.push("meta");
	return styles.length ? styles.join(' ') : null;
	}
	if (state.taskClosed) {
	styles.push("property");
	return styles.length ? styles.join(' ') : null;
	}

	if (state.linkHref) {
	styles.push(tokenTypes.linkHref, "url");
	} else { // Only apply inline styles to non-url text
	if (state.strong) { styles.push(tokenTypes.strong); }
	if (state.em) { styles.push(tokenTypes.em); }
	if (state.strikethrough) { styles.push(tokenTypes.strikethrough); }
	if (state.linkText) { styles.push(tokenTypes.linkText); }
	if (state.code) { styles.push(tokenTypes.code); }
	}

	if (state.header) { styles.push(tokenTypes.header, tokenTypes.header + "-" + state.header); }

	if (state.quote) {
	styles.push(tokenTypes.quote);

	// Add `quote-#` where the maximum for `#` is modeCfg.maxBlockquoteDepth
	if (!modeCfg.maxBlockquoteDepth \|\| modeCfg.maxBlockquoteDepth >= state.quote) {
	styles.push(tokenTypes.quote + "-" + state.quote);
	} else {
	styles.push(tokenTypes.quote + "-" + modeCfg.maxBlockquoteDepth);
	}
	}

	if (state.list !== false) {
	var listMod = (state.listDepth - 1) % 3;
	if (!listMod) {
	styles.push(tokenTypes.list1);
	} else if (listMod === 1) {
	styles.push(tokenTypes.list2);
	} else {
	styles.push(tokenTypes.list3);
	}
	}

	if (state.trailingSpaceNewLine) {
	styles.push("trailing-space-new-line");
	} else if (state.trailingSpace) {
	styles.push("trailing-space-" + (state.trailingSpace % 2 ? "a" : "b"));
	}

	return styles.length ? styles.join(' ') : null;
	}

	function handleText(stream, state) {
	if (stream.match(textRE, true)) {
	return getType(state);
	}
	return undefined;
	}

	function inlineNormal(stream, state) {
	var style = state.text(stream, state);
	if (typeof style !== 'undefined')
	return style;

	if (state.list) { // List marker (*, +, -, 1., etc)
	state.list = null;
	return getType(state);
	}

	if (state.taskList) {
	var taskOpen = stream.match(taskListRE, true)[1] !== "x";
	if (taskOpen) state.taskOpen = true;
	else state.taskClosed = true;
	if (modeCfg.highlightFormatting) state.formatting = "task";
	state.taskList = false;
	return getType(state);
	}

	state.taskOpen = false;
	state.taskClosed = false;

	if (state.header && stream.match(/^#+$/, true)) {
	if (modeCfg.highlightFormatting) state.formatting = "header";
	return getType(state);
	}

	// Get sol() value now, before character is consumed
	var sol = stream.sol();

	var ch = stream.next();

	if (ch === '\\') {
	stream.next();
	if (modeCfg.highlightFormatting) {
	var type = getType(state);
	var formattingEscape = tokenTypes.formatting + "-escape";
	return type ? type + " " + formattingEscape : formattingEscape;
	}
	}

	// Matches link titles present on next line
	if (state.linkTitle) {
	state.linkTitle = false;
	var matchCh = ch;
	if (ch === '(') {
	matchCh = ')';
	}
	matchCh = (matchCh+'').replace(/([.?*+^$[\]\\(){}\|-])/g, "\\$1");
	var regex = '^\\s*(?:[^' + matchCh + '\\\\]+\|\\\\\\\\\|\\\\.)' + matchCh;
	if (stream.match(new RegExp(regex), true)) {
	return tokenTypes.linkHref;
	}
	}

	// If this block is changed, it may need to be updated in GFM mode
	if (ch === '`') {
	var previousFormatting = state.formatting;
	if (modeCfg.highlightFormatting) state.formatting = "code";
	var t = getType(state);
	var before = stream.pos;
	stream.eatWhile('`');
	var difference = 1 + stream.pos - before;
	if (!state.code) {
	codeDepth = difference;
	state.code = true;
	return getType(state);
	} else {
	if (difference === codeDepth) { // Must be exact
	state.code = false;
	return t;
	}
	state.formatting = previousFormatting;
	return getType(state);
	}
	} else if (state.code) {
	return getType(state);
	}

	if (ch === '!' && stream.match(/\[[^\]]*\] ?(?:\(\|\[)/, false)) {
	stream.match(/\[[^\]]*\]/);
	state.inline = state.f = linkHref;
	return tokenTypes.image;
	}

	if (ch === '[' && stream.match(/.\]($.$\| ?\[.*\])/, false)) {
	state.linkText = true;
	if (modeCfg.highlightFormatting) state.formatting = "link";
	return getType(state);
	}

	if (ch === ']' && state.linkText && stream.match(/$.$\| ?\[.\]/, false)) {
	if (modeCfg.highlightFormatting) state.formatting = "link";
	var type = getType(state);
	state.linkText = false;
	state.inline = state.f = linkHref;
	return type;
	}

	if (ch === '<' && stream.match(/^(https?\|ftps?):\/\/(?:[^\\>]\|\\.)+>/, false)) {
	state.f = state.inline = linkInline;
	if (modeCfg.highlightFormatting) state.formatting = "link";
	var type = getType(state);
	if (type){
	type += " ";
	} else {
	type = "";
	}
	return type + tokenTypes.linkInline;
	}

	if (ch === '<' && stream.match(/^[^> \\]+@(?:[^\\>]\|\\.)+>/, false)) {
	state.f = state.inline = linkInline;
	if (modeCfg.highlightFormatting) state.formatting = "link";
	var type = getType(state);
	if (type){
	type += " ";
	} else {
	type = "";
	}
	return type + tokenTypes.linkEmail;
	}

	if (ch === '<' && stream.match(/^(!--\|\w)/, false)) {
	var end = stream.string.indexOf(">", stream.pos);
	if (end != -1) {
	var atts = stream.string.substring(stream.start, end);
	if (/markdown\s=\s('\|"){0,1}1('\|"){0,1}/.test(atts)) state.md_inside = true;
	}
	stream.backUp(1);
	state.htmlState = CodeMirror.startState(htmlMode);
	return switchBlock(stream, state, htmlBlock);
	}

	if (ch === '<' && stream.match(/^\/\w*?>/)) {
	state.md_inside = false;
	return "tag";
	}

	var ignoreUnderscore = false;
	if (!modeCfg.underscoresBreakWords) {
	if (ch === '_' && stream.peek() !== '_' && stream.match(/(\w)/, false)) {
	var prevPos = stream.pos - 2;
	if (prevPos >= 0) {
	var prevCh = stream.string.charAt(prevPos);
	if (prevCh !== '_' && prevCh.match(/(\w)/, false)) {
	ignoreUnderscore = true;
	}
	}
	}
	}
	if (ch === '*' \|\| (ch === '_' && !ignoreUnderscore)) {
	if (sol && stream.peek() === ' ') {
	// Do nothing, surrounded by newline and space
	} else if (state.strong === ch && stream.eat(ch)) { // Remove STRONG
	if (modeCfg.highlightFormatting) state.formatting = "strong";
	var t = getType(state);
	state.strong = false;
	return t;
	} else if (!state.strong && stream.eat(ch)) { // Add STRONG
	state.strong = ch;
	if (modeCfg.highlightFormatting) state.formatting = "strong";
	return getType(state);
	} else if (state.em === ch) { // Remove EM
	if (modeCfg.highlightFormatting) state.formatting = "em";
	var t = getType(state);
	state.em = false;
	return t;
	} else if (!state.em) { // Add EM
	state.em = ch;
	if (modeCfg.highlightFormatting) state.formatting = "em";
	return getType(state);
	}
	} else if (ch === ' ') {
	if (stream.eat('*') \|\| stream.eat('_')) { // Probably surrounded by spaces
	if (stream.peek() === ' ') { // Surrounded by spaces, ignore
	return getType(state);
	} else { // Not surrounded by spaces, back up pointer
	stream.backUp(1);
	}
	}
	}

	if (modeCfg.strikethrough) {
	if (ch === '~' && stream.eatWhile(ch)) {
	if (state.strikethrough) {// Remove strikethrough
	if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
	var t = getType(state);
	state.strikethrough = false;
	return t;
	} else if (stream.match(/^[^\s]/, false)) {// Add strikethrough
	state.strikethrough = true;
	if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
	return getType(state);
	}
	} else if (ch === ' ') {
	if (stream.match(/^~~/, true)) { // Probably surrounded by space
	if (stream.peek() === ' ') { // Surrounded by spaces, ignore
	return getType(state);
	} else { // Not surrounded by spaces, back up pointer
	stream.backUp(2);
	}
	}
	}
	}

	if (ch === ' ') {
	if (stream.match(/ +$/, false)) {
	state.trailingSpace++;
	} else if (state.trailingSpace) {
	state.trailingSpaceNewLine = true;
	}
	}

	return getType(state);
	}

	function linkInline(stream, state) {
	var ch = stream.next();

	if (ch === ">") {
	state.f = state.inline = inlineNormal;
	if (modeCfg.highlightFormatting) state.formatting = "link";
	var type = getType(state);
	if (type){
	type += " ";
	} else {
	type = "";
	}
	return type + tokenTypes.linkInline;
	}

	stream.match(/^[^>]+/, true);

	return tokenTypes.linkInline;
	}

	function linkHref(stream, state) {
	// Check if space, and return NULL if so (to avoid marking the space)
	if(stream.eatSpace()){
	return null;
	}
	var ch = stream.next();
	if (ch === '(' \|\| ch === '[') {
	state.f = state.inline = getLinkHrefInside(ch === "(" ? ")" : "]");
	if (modeCfg.highlightFormatting) state.formatting = "link-string";
	state.linkHref = true;
	return getType(state);
	}
	return 'error';
	}

	function getLinkHrefInside(endChar) {
	return function(stream, state) {
	var ch = stream.next();

	if (ch === endChar) {
	state.f = state.inline = inlineNormal;
	if (modeCfg.highlightFormatting) state.formatting = "link-string";
	var returnState = getType(state);
	state.linkHref = false;
	return returnState;
	}

	if (stream.match(inlineRE(endChar), true)) {
	stream.backUp(1);
	}

	state.linkHref = true;
	return getType(state);
	};
	}

	function footnoteLink(stream, state) {
	if (stream.match(/^[^\]]*\]:/, false)) {
	state.f = footnoteLinkInside;
	stream.next(); // Consume [
	if (modeCfg.highlightFormatting) state.formatting = "link";
	state.linkText = true;
	return getType(state);
	}
	return switchInline(stream, state, inlineNormal);
	}

	function footnoteLinkInside(stream, state) {
	if (stream.match(/^\]:/, true)) {
	state.f = state.inline = footnoteUrl;
	if (modeCfg.highlightFormatting) state.formatting = "link";
	var returnType = getType(state);
	state.linkText = false;
	return returnType;
	}

	stream.match(/^[^\]]+/, true);

	return tokenTypes.linkText;
	}

	function footnoteUrl(stream, state) {
	// Check if space, and return NULL if so (to avoid marking the space)
	if(stream.eatSpace()){
	return null;
	}
	// Match URL
	stream.match(/^[^\s]+/, true);
	// Check for link title
	if (stream.peek() === undefined) { // End of line, set flag to check next line
	state.linkTitle = true;
	} else { // More content on line, check if link title
	stream.match(/^(?:\s+(?:"(?:[^"\\]\|\\\\\|\\.)+"\|'(?:[^'\\]\|\\\\\|\\.)+'\|$(?:[^)\\]\|\\\\\|\\.)+$))?/, true);
	}
	state.f = state.inline = inlineNormal;
	return tokenTypes.linkHref + " url";
	}

	var savedInlineRE = [];
	function inlineRE(endChar) {
	if (!savedInlineRE[endChar]) {
	// Escape endChar for RegExp (taken from http://stackoverflow.com/a/494122/526741)
	endChar = (endChar+'').replace(/([.?*+^$[\]\\(){}\|-])/g, "\\$1");
	// Match any non-endChar, escaped character, as well as the closing
	// endChar.
	savedInlineRE[endChar] = new RegExp('^(?:[^\\\\]\|\\\\.)*?(' + endChar + ')');
	}
	return savedInlineRE[endChar];
	}

	var mode = {
	startState: function() {
	return {
	f: blockNormal,

	prevLine: null,
	thisLine: null,

	block: blockNormal,
	htmlState: null,
	indentation: 0,

	inline: inlineNormal,
	text: handleText,

	formatting: false,
	linkText: false,
	linkHref: false,
	linkTitle: false,
	em: false,
	strong: false,
	header: 0,
	hr: false,
	taskList: false,
	list: false,
	listDepth: 0,
	quote: 0,
	trailingSpace: 0,
	trailingSpaceNewLine: false,
	strikethrough: false,
	fencedChars: null
	};
	},

	copyState: function(s) {
	return {
	f: s.f,

	prevLine: s.prevLine,
	thisLine: s.thisLine,

	block: s.block,
	htmlState: s.htmlState && CodeMirror.copyState(htmlMode, s.htmlState),
	indentation: s.indentation,

	localMode: s.localMode,
	localState: s.localMode ? CodeMirror.copyState(s.localMode, s.localState) : null,

	inline: s.inline,
	text: s.text,
	formatting: false,
	linkTitle: s.linkTitle,
	code: s.code,
	em: s.em,
	strong: s.strong,
	strikethrough: s.strikethrough,
	header: s.header,
	hr: s.hr,
	taskList: s.taskList,
	list: s.list,
	listDepth: s.listDepth,
	quote: s.quote,
	indentedCode: s.indentedCode,
	trailingSpace: s.trailingSpace,
	trailingSpaceNewLine: s.trailingSpaceNewLine,
	md_inside: s.md_inside,
	fencedChars: s.fencedChars
	};
	},

	token: function(stream, state) {

	// Reset state.formatting
	state.formatting = false;

	if (stream != state.thisLine) {
	var forceBlankLine = state.header \|\| state.hr;

	// Reset state.header and state.hr
	state.header = 0;
	state.hr = false;

	if (stream.match(/^\s*$/, true) \|\| forceBlankLine) {
	blankLine(state);
	if (!forceBlankLine) return null
	state.prevLine = null
	}

	state.prevLine = state.thisLine
	state.thisLine = stream

	// Reset state.taskList
	state.taskList = false;

	// Reset state.trailingSpace
	state.trailingSpace = 0;
	state.trailingSpaceNewLine = false;

	state.f = state.block;
	var indentation = stream.match(/^\s*/, true)[0].replace(/\t/g, ' ').length;
	var difference = Math.floor((indentation - state.indentation) / 4) * 4;
	if (difference > 4) difference = 4;
	var adjustedIndentation = state.indentation + difference;
	state.indentationDiff = adjustedIndentation - state.indentation;
	state.indentation = adjustedIndentation;
	if (indentation > 0) return null;
	}
	return state.f(stream, state);
	},

	innerMode: function(state) {
	if (state.block == htmlBlock) return {state: state.htmlState, mode: htmlMode};
	if (state.localState) return {state: state.localState, mode: state.localMode};
	return {state: state, mode: mode};
	},

	blankLine: blankLine,

	getType: getType,

	fold: "markdown"
	};
	return mode;
	}, "xml");

	CodeMirror.defineMIME("text/x-markdown", "markdown");

	});

	},{"../../lib/codemirror":6,"../meta":9,"../xml/xml":10}],9:[function(require,module,exports){
	// CodeMirror, copyright (c) by Marijn Haverbeke and others
	// Distributed under an MIT license: http://codemirror.net/LICENSE

	(function(mod) {
	if (typeof exports == "object" && typeof module == "object") // CommonJS
	mod(require("../lib/codemirror"));
	else if (typeof define == "function" && define.amd) // AMD
	define(["../lib/codemirror"], mod);
	else // Plain browser env
	mod(CodeMirror);
	})(function(CodeMirror) {
	"use strict";

	CodeMirror.modeInfo = [
	{name: "APL", mime: "text/apl", mode: "apl", ext: ["dyalog", "apl"]},
	{name: "PGP", mimes: ["application/pgp", "application/pgp-keys", "application/pgp-signature"], mode: "asciiarmor", ext: ["pgp"]},
	{name: "ASN.1", mime: "text/x-ttcn-asn", mode: "asn.1", ext: ["asn", "asn1"]},
	{name: "Asterisk", mime: "text/x-asterisk", mode: "asterisk", file: /^extensions\.conf$/i},
	{name: "Brainfuck", mime: "text/x-brainfuck", mode: "brainfuck", ext: ["b", "bf"]},
	{name: "C", mime: "text/x-csrc", mode: "clike", ext: ["c", "h"]},
	{name: "C++", mime: "text/x-c++src", mode: "clike", ext: ["cpp", "c++", "cc", "cxx", "hpp", "h++", "hh", "hxx"], alias: ["cpp"]},
	{name: "Cobol", mime: "text/x-cobol", mode: "cobol", ext: ["cob", "cpy"]},
	{name: "C#", mime: "text/x-csharp", mode: "clike", ext: ["cs"], alias: ["csharp"]},
	{name: "Clojure", mime: "text/x-clojure", mode: "clojure", ext: ["clj"]},
	{name: "Closure Stylesheets (GSS)", mime: "text/x-gss", mode: "css", ext: ["gss"]},
	{name: "CMake", mime: "text/x-cmake", mode: "cmake", ext: ["cmake", "cmake.in"], file: /^CMakeLists.txt$/},
	{name: "CoffeeScript", mime: "text/x-coffeescript", mode: "coffeescript", ext: ["coffee"], alias: ["coffee", "coffee-script"]},
	{name: "Common Lisp", mime: "text/x-common-lisp", mode: "commonlisp", ext: ["cl", "lisp", "el"], alias: ["lisp"]},
	{name: "Cypher", mime: "application/x-cypher-query", mode: "cypher", ext: ["cyp", "cypher"]},
	{name: "Cython", mime: "text/x-cython", mode: "python", ext: ["pyx", "pxd", "pxi"]},
	{name: "CSS", mime: "text/css", mode: "css", ext: ["css"]},
	{name: "CQL", mime: "text/x-cassandra", mode: "sql", ext: ["cql"]},
	{name: "D", mime: "text/x-d", mode: "d", ext: ["d"]},
	{name: "Dart", mimes: ["application/dart", "text/x-dart"], mode: "dart", ext: ["dart"]},
	{name: "diff", mime: "text/x-diff", mode: "diff", ext: ["diff", "patch"]},
	{name: "Django", mime: "text/x-django", mode: "django"},
	{name: "Dockerfile", mime: "text/x-dockerfile", mode: "dockerfile", file: /^Dockerfile$/},
	{name: "DTD", mime: "application/xml-dtd", mode: "dtd", ext: ["dtd"]},
	{name: "Dylan", mime: "text/x-dylan", mode: "dylan", ext: ["dylan", "dyl", "intr"]},
	{name: "EBNF", mime: "text/x-ebnf", mode: "ebnf"},
	{name: "ECL", mime: "text/x-ecl", mode: "ecl", ext: ["ecl"]},
	{name: "Eiffel", mime: "text/x-eiffel", mode: "eiffel", ext: ["e"]},
	{name: "Elm", mime: "text/x-elm", mode: "elm", ext: ["elm"]},
	{name: "Embedded Javascript", mime: "application/x-ejs", mode: "htmlembedded", ext: ["ejs"]},
	{name: "Embedded Ruby", mime: "application/x-erb", mode: "htmlembedded", ext: ["erb"]},
	{name: "Erlang", mime: "text/x-erlang", mode: "erlang", ext: ["erl"]},
	{name: "Factor", mime: "text/x-factor", mode: "factor", ext: ["factor"]},
	{name: "Forth", mime: "text/x-forth", mode: "forth", ext: ["forth", "fth", "4th"]},
	{name: "Fortran", mime: "text/x-fortran", mode: "fortran", ext: ["f", "for", "f77", "f90"]},
	{name: "F#", mime: "text/x-fsharp", mode: "mllike", ext: ["fs"], alias: ["fsharp"]},
	{name: "Gas", mime: "text/x-gas", mode: "gas", ext: ["s"]},
	{name: "Gherkin", mime: "text/x-feature", mode: "gherkin", ext: ["feature"]},
	{name: "GitHub Flavored Markdown", mime: "text/x-gfm", mode: "gfm", file: /^(readme\|contributing\|history).md$/i},
	{name: "Go", mime: "text/x-go", mode: "go", ext: ["go"]},
	{name: "Groovy", mime: "text/x-groovy", mode: "groovy", ext: ["groovy"]},
	{name: "HAML", mime: "text/x-haml", mode: "haml", ext: ["haml"]},
	{name: "Haskell", mime: "text/x-haskell", mode: "haskell", ext: ["hs"]},
	{name: "Haxe", mime: "text/x-haxe", mode: "haxe", ext: ["hx"]},
	{name: "HXML", mime: "text/x-hxml", mode: "haxe", ext: ["hxml"]},
	{name: "ASP.NET", mime: "application/x-aspx", mode: "htmlembedded", ext: ["aspx"], alias: ["asp", "aspx"]},
	{name: "HTML", mime: "text/html", mode: "htmlmixed", ext: ["html", "htm"], alias: ["xhtml"]},
	{name: "HTTP", mime: "message/http", mode: "http"},
	{name: "IDL", mime: "text/x-idl", mode: "idl", ext: ["pro"]},
	{name: "Jade", mime: "text/x-jade", mode: "jade", ext: ["jade"]},
	{name: "Java", mime: "text/x-java", mode: "clike", ext: ["java"]},
	{name: "Java Server Pages", mime: "application/x-jsp", mode: "htmlembedded", ext: ["jsp"], alias: ["jsp"]},
	{name: "JavaScript", mimes: ["text/javascript", "text/ecmascript", "application/javascript", "application/x-javascript", "application/ecmascript"],
	mode: "javascript", ext: ["js"], alias: ["ecmascript", "js", "node"]},
	{name: "JSON", mimes: ["application/json", "application/x-json"], mode: "javascript", ext: ["json", "map"], alias: ["json5"]},
	{name: "JSON-LD", mime: "application/ld+json", mode: "javascript", ext: ["jsonld"], alias: ["jsonld"]},
	{name: "Jinja2", mime: "null", mode: "jinja2"},
	{name: "Julia", mime: "text/x-julia", mode: "julia", ext: ["jl"]},
	{name: "Kotlin", mime: "text/x-kotlin", mode: "clike", ext: ["kt"]},
	{name: "LESS", mime: "text/x-less", mode: "css", ext: ["less"]},
	{name: "LiveScript", mime: "text/x-livescript", mode: "livescript", ext: ["ls"], alias: ["ls"]},
	{name: "Lua", mime: "text/x-lua", mode: "lua", ext: ["lua"]},
	{name: "Markdown", mime: "text/x-markdown", mode: "markdown", ext: ["markdown", "md", "mkd"]},
	{name: "mIRC", mime: "text/mirc", mode: "mirc"},
	{name: "MariaDB SQL", mime: "text/x-mariadb", mode: "sql"},
	{name: "Mathematica", mime: "text/x-mathematica", mode: "mathematica", ext: ["m", "nb"]},
	{name: "Modelica", mime: "text/x-modelica", mode: "modelica", ext: ["mo"]},
	{name: "MUMPS", mime: "text/x-mumps", mode: "mumps"},
	{name: "MS SQL", mime: "text/x-mssql", mode: "sql"},
	{name: "MySQL", mime: "text/x-mysql", mode: "sql"},
	{name: "Nginx", mime: "text/x-nginx-conf", mode: "nginx", file: /nginx.*\.conf$/i},
	{name: "NSIS", mime: "text/x-nsis", mode: "nsis", ext: ["nsh", "nsi"]},
	{name: "NTriples", mime: "text/n-triples", mode: "ntriples", ext: ["nt"]},
	{name: "Objective C", mime: "text/x-objectivec", mode: "clike", ext: ["m", "mm"]},
	{name: "OCaml", mime: "text/x-ocaml", mode: "mllike", ext: ["ml", "mli", "mll", "mly"]},
	{name: "Octave", mime: "text/x-octave", mode: "octave", ext: ["m"]},
	{name: "Oz", mime: "text/x-oz", mode: "oz", ext: ["oz"]},
	{name: "Pascal", mime: "text/x-pascal", mode: "pascal", ext: ["p", "pas"]},
	{name: "PEG.js", mime: "null", mode: "pegjs", ext: ["jsonld"]},
	{name: "Perl", mime: "text/x-perl", mode: "perl", ext: ["pl", "pm"]},
	{name: "PHP", mime: "application/x-httpd-php", mode: "php", ext: ["php", "php3", "php4", "php5", "phtml"]},
	{name: "Pig", mime: "text/x-pig", mode: "pig", ext: ["pig"]},
	{name: "Plain Text", mime: "text/plain", mode: "null", ext: ["txt", "text", "conf", "def", "list", "log"]},
	{name: "PLSQL", mime: "text/x-plsql", mode: "sql", ext: ["pls"]},
	{name: "Properties files", mime: "text/x-properties", mode: "properties", ext: ["properties", "ini", "in"], alias: ["ini", "properties"]},
	{name: "Python", mime: "text/x-python", mode: "python", ext: ["py", "pyw"]},
	{name: "Puppet", mime: "text/x-puppet", mode: "puppet", ext: ["pp"]},
	{name: "Q", mime: "text/x-q", mode: "q", ext: ["q"]},
	{name: "R", mime: "text/x-rsrc", mode: "r", ext: ["r"], alias: ["rscript"]},
	{name: "reStructuredText", mime: "text/x-rst", mode: "rst", ext: ["rst"], alias: ["rst"]},
	{name: "RPM Changes", mime: "text/x-rpm-changes", mode: "rpm"},
	{name: "RPM Spec", mime: "text/x-rpm-spec", mode: "rpm", ext: ["spec"]},
	{name: "Ruby", mime: "text/x-ruby", mode: "ruby", ext: ["rb"], alias: ["jruby", "macruby", "rake", "rb", "rbx"]},
	{name: "Rust", mime: "text/x-rustsrc", mode: "rust", ext: ["rs"]},
	{name: "Sass", mime: "text/x-sass", mode: "sass", ext: ["sass"]},
	{name: "Scala", mime: "text/x-scala", mode: "clike", ext: ["scala"]},
	{name: "Scheme", mime: "text/x-scheme", mode: "scheme", ext: ["scm", "ss"]},
	{name: "SCSS", mime: "text/x-scss", mode: "css", ext: ["scss"]},
	{name: "Shell", mime: "text/x-sh", mode: "shell", ext: ["sh", "ksh", "bash"], alias: ["bash", "sh", "zsh"], file: /^PKGBUILD$/},
	{name: "Sieve", mime: "application/sieve", mode: "sieve", ext: ["siv", "sieve"]},
	{name: "Slim", mimes: ["text/x-slim", "application/x-slim"], mode: "slim", ext: ["slim"]},
	{name: "Smalltalk", mime: "text/x-stsrc", mode: "smalltalk", ext: ["st"]},
	{name: "Smarty", mime: "text/x-smarty", mode: "smarty", ext: ["tpl"]},
	{name: "Solr", mime: "text/x-solr", mode: "solr"},
	{name: "Soy", mime: "text/x-soy", mode: "soy", ext: ["soy"], alias: ["closure template"]},
	{name: "SPARQL", mime: "application/sparql-query", mode: "sparql", ext: ["rq", "sparql"], alias: ["sparul"]},
	{name: "Spreadsheet", mime: "text/x-spreadsheet", mode: "spreadsheet", alias: ["excel", "formula"]},
	{name: "SQL", mime: "text/x-sql", mode: "sql", ext: ["sql"]},
	{name: "Squirrel", mime: "text/x-squirrel", mode: "clike", ext: ["nut"]},
	{name: "Swift", mime: "text/x-swift", mode: "swift", ext: ["swift"]},
	{name: "MariaDB", mime: "text/x-mariadb", mode: "sql"},
	{name: "sTeX", mime: "text/x-stex", mode: "stex"},
	{name: "LaTeX", mime: "text/x-latex", mode: "stex", ext: ["text", "ltx"], alias: ["tex"]},
	{name: "SystemVerilog", mime: "text/x-systemverilog", mode: "verilog", ext: ["v"]},
	{name: "Tcl", mime: "text/x-tcl", mode: "tcl", ext: ["tcl"]},
	{name: "Textile", mime: "text/x-textile", mode: "textile", ext: ["textile"]},
	{name: "TiddlyWiki ", mime: "text/x-tiddlywiki", mode: "tiddlywiki"},
	{name: "Tiki wiki", mime: "text/tiki", mode: "tiki"},
	{name: "TOML", mime: "text/x-toml", mode: "toml", ext: ["toml"]},
	{name: "Tornado", mime: "text/x-tornado", mode: "tornado"},
	{name: "troff", mime: "troff", mode: "troff", ext: ["1", "2", "3", "4", "5", "6", "7", "8", "9"]},
	{name: "TTCN", mime: "text/x-ttcn", mode: "ttcn", ext: ["ttcn", "ttcn3", "ttcnpp"]},
	{name: "TTCN_CFG", mime: "text/x-ttcn-cfg", mode: "ttcn-cfg", ext: ["cfg"]},
	{name: "Turtle", mime: "text/turtle", mode: "turtle", ext: ["ttl"]},
	{name: "TypeScript", mime: "application/typescript", mode: "javascript", ext: ["ts"], alias: ["ts"]},
	{name: "Twig", mime: "text/x-twig", mode: "twig"},
	{name: "VB.NET", mime: "text/x-vb", mode: "vb", ext: ["vb"]},
	{name: "VBScript", mime: "text/vbscript", mode: "vbscript", ext: ["vbs"]},
	{name: "Velocity", mime: "text/velocity", mode: "velocity", ext: ["vtl"]},
	{name: "Verilog", mime: "text/x-verilog", mode: "verilog", ext: ["v"]},
	{name: "VHDL", mime: "text/x-vhdl", mode: "vhdl", ext: ["vhd", "vhdl"]},
	{name: "XML", mimes: ["application/xml", "text/xml"], mode: "xml", ext: ["xml", "xsl", "xsd"], alias: ["rss", "wsdl", "xsd"]},
	{name: "XQuery", mime: "application/xquery", mode: "xquery", ext: ["xy", "xquery"]},
	{name: "YAML", mime: "text/x-yaml", mode: "yaml", ext: ["yaml", "yml"], alias: ["yml"]},
	{name: "Z80", mime: "text/x-z80", mode: "z80", ext: ["z80"]},
	{name: "mscgen", mime: "text/x-mscgen", mode: "mscgen", ext: ["mscgen", "mscin", "msc"]},
	{name: "xu", mime: "text/x-xu", mode: "mscgen", ext: ["xu"]},
	{name: "msgenny", mime: "text/x-msgenny", mode: "mscgen", ext: ["msgenny"]}
	];
	// Ensure all modes have a mime property for backwards compatibility
	for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
	var info = CodeMirror.modeInfo[i];
	if (info.mimes) info.mime = info.mimes[0];
	}

	CodeMirror.findModeByMIME = function(mime) {
	mime = mime.toLowerCase();
	for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
	var info = CodeMirror.modeInfo[i];
	if (info.mime == mime) return info;
	if (info.mimes) for (var j = 0; j < info.mimes.length; j++)
	if (info.mimes[j] == mime) return info;
	}
	};

	CodeMirror.findModeByExtension = function(ext) {
	for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
	var info = CodeMirror.modeInfo[i];
	if (info.ext) for (var j = 0; j < info.ext.length; j++)
	if (info.ext[j] == ext) return info;
	}
	};

	CodeMirror.findModeByFileName = function(filename) {
	for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
	var info = CodeMirror.modeInfo[i];
	if (info.file && info.file.test(filename)) return info;
	}
	var dot = filename.lastIndexOf(".");
	var ext = dot > -1 && filename.substring(dot + 1, filename.length);
	if (ext) return CodeMirror.findModeByExtension(ext);
	};

	CodeMirror.findModeByName = function(name) {
	name = name.toLowerCase();
	for (var i = 0; i < CodeMirror.modeInfo.length; i++) {
	var info = CodeMirror.modeInfo[i];
	if (info.name.toLowerCase() == name) return info;
	if (info.alias) for (var j = 0; j < info.alias.length; j++)
	if (info.alias[j].toLowerCase() == name) return info;
	}
	};
	});

	},{"../lib/codemirror":6}],10:[function(require,module,exports){
	// CodeMirror, copyright (c) by Marijn Haverbeke and others
	// Distributed under an MIT license: http://codemirror.net/LICENSE

	(function(mod) {
	if (typeof exports == "object" && typeof module == "object") // CommonJS
	mod(require("../../lib/codemirror"));
	else if (typeof define == "function" && define.amd) // AMD
	define(["../../lib/codemirror"], mod);
	else // Plain browser env
	mod(CodeMirror);
	})(function(CodeMirror) {
	"use strict";

	CodeMirror.defineMode("xml", function(config, parserConfig) {
	var indentUnit = config.indentUnit;
	var multilineTagIndentFactor = parserConfig.multilineTagIndentFactor \|\| 1;
	var multilineTagIndentPastTag = parserConfig.multilineTagIndentPastTag;
	if (multilineTagIndentPastTag == null) multilineTagIndentPastTag = true;

	var Kludges = parserConfig.htmlMode ? {
	autoSelfClosers: {'area': true, 'base': true, 'br': true, 'col': true, 'command': true,
	'embed': true, 'frame': true, 'hr': true, 'img': true, 'input': true,
	'keygen': true, 'link': true, 'meta': true, 'param': true, 'source': true,
	'track': true, 'wbr': true, 'menuitem': true},
	implicitlyClosed: {'dd': true, 'li': true, 'optgroup': true, 'option': true, 'p': true,
	'rp': true, 'rt': true, 'tbody': true, 'td': true, 'tfoot': true,
	'th': true, 'tr': true},
	contextGrabbers: {
	'dd': {'dd': true, 'dt': true},
	'dt': {'dd': true, 'dt': true},
	'li': {'li': true},
	'option': {'option': true, 'optgroup': true},
	'optgroup': {'optgroup': true},
	'p': {'address': true, 'article': true, 'aside': true, 'blockquote': true, 'dir': true,
	'div': true, 'dl': true, 'fieldset': true, 'footer': true, 'form': true,
	'h1': true, 'h2': true, 'h3': true, 'h4': true, 'h5': true, 'h6': true,
	'header': true, 'hgroup': true, 'hr': true, 'menu': true, 'nav': true, 'ol': true,
	'p': true, 'pre': true, 'section': true, 'table': true, 'ul': true},
	'rp': {'rp': true, 'rt': true},
	'rt': {'rp': true, 'rt': true},
	'tbody': {'tbody': true, 'tfoot': true},
	'td': {'td': true, 'th': true},
	'tfoot': {'tbody': true},
	'th': {'td': true, 'th': true},
	'thead': {'tbody': true, 'tfoot': true},
	'tr': {'tr': true}
	},
	doNotIndent: {"pre": true},
	allowUnquoted: true,
	allowMissing: true,
	caseFold: true
	} : {
	autoSelfClosers: {},
	implicitlyClosed: {},
	contextGrabbers: {},
	doNotIndent: {},
	allowUnquoted: false,
	allowMissing: false,
	caseFold: false
	};
	var alignCDATA = parserConfig.alignCDATA;

	// Return variables for tokenizers
	var type, setStyle;

	function inText(stream, state) {
	function chain(parser) {
	state.tokenize = parser;
	return parser(stream, state);
	}

	var ch = stream.next();
	if (ch == "<") {
	if (stream.eat("!")) {
	if (stream.eat("[")) {
	if (stream.match("CDATA[")) return chain(inBlock("atom", "]]>"));
	else return null;
	} else if (stream.match("--")) {
	return chain(inBlock("comment", "-->"));
	} else if (stream.match("DOCTYPE", true, true)) {
	stream.eatWhile(/[\w\._\-]/);
	return chain(doctype(1));
	} else {
	return null;
	}
	} else if (stream.eat("?")) {
	stream.eatWhile(/[\w\._\-]/);
	state.tokenize = inBlock("meta", "?>");
	return "meta";
	} else {
	type = stream.eat("/") ? "closeTag" : "openTag";
	state.tokenize = inTag;
	return "tag bracket";
	}
	} else if (ch == "&") {
	var ok;
	if (stream.eat("#")) {
	if (stream.eat("x")) {
	ok = stream.eatWhile(/[a-fA-F\d]/) && stream.eat(";");
	} else {
	ok = stream.eatWhile(/[\d]/) && stream.eat(";");
	}
	} else {
	ok = stream.eatWhile(/[\w\.\-:]/) && stream.eat(";");
	}
	return ok ? "atom" : "error";
	} else {
	stream.eatWhile(/[^&<]/);
	return null;
	}
	}
	inText.isInText = true;

	function inTag(stream, state) {
	var ch = stream.next();
	if (ch == ">" \|\| (ch == "/" && stream.eat(">"))) {
	state.tokenize = inText;
	type = ch == ">" ? "endTag" : "selfcloseTag";
	return "tag bracket";
	} else if (ch == "=") {
	type = "equals";
	return null;
	} else if (ch == "<") {
	state.tokenize = inText;
	state.state = baseState;
	state.tagName = state.tagStart = null;
	var next = state.tokenize(stream, state);
	return next ? next + " tag error" : "tag error";
	} else if (/[\'\"]/.test(ch)) {
	state.tokenize = inAttribute(ch);
	state.stringStartCol = stream.column();
	return state.tokenize(stream, state);
	} else {
	stream.match(/^[^\s\u00a0=<>\"\']*[^\s\u00a0=<>\"\'\/]/);
	return "word";
	}
	}

	function inAttribute(quote) {
	var closure = function(stream, state) {
	while (!stream.eol()) {
	if (stream.next() == quote) {
	state.tokenize = inTag;
	break;
	}
	}
	return "string";
	};
	closure.isInAttribute = true;
	return closure;
	}

	function inBlock(style, terminator) {
	return function(stream, state) {
	while (!stream.eol()) {
	if (stream.match(terminator)) {
	state.tokenize = inText;
	break;
	}
	stream.next();
	}
	return style;
	};
	}
	function doctype(depth) {
	return function(stream, state) {
	var ch;
	while ((ch = stream.next()) != null) {
	if (ch == "<") {
	state.tokenize = doctype(depth + 1);
	return state.tokenize(stream, state);
	} else if (ch == ">") {
	if (depth == 1) {
	state.tokenize = inText;
	break;
	} else {
	state.tokenize = doctype(depth - 1);
	return state.tokenize(stream, state);
	}
	}
	}
	return "meta";
	};
	}

	function Context(state, tagName, startOfLine) {
	this.prev = state.context;
	this.tagName = tagName;
	this.indent = state.indented;
	this.startOfLine = startOfLine;
	if (Kludges.doNotIndent.hasOwnProperty(tagName) \|\| (state.context && state.context.noIndent))
	this.noIndent = true;
	}
	function popContext(state) {
	if (state.context) state.context = state.context.prev;
	}
	function maybePopContext(state, nextTagName) {
	var parentTagName;
	while (true) {
	if (!state.context) {
	return;
	}
	parentTagName = state.context.tagName;
	if (!Kludges.contextGrabbers.hasOwnProperty(parentTagName) \|\|
	!Kludges.contextGrabbers[parentTagName].hasOwnProperty(nextTagName)) {
	return;
	}
	popContext(state);
	}
	}

	function baseState(type, stream, state) {
	if (type == "openTag") {
	state.tagStart = stream.column();
	return tagNameState;
	} else if (type == "closeTag") {
	return closeTagNameState;
	} else {
	return baseState;
	}
	}
	function tagNameState(type, stream, state) {
	if (type == "word") {
	state.tagName = stream.current();
	setStyle = "tag";
	return attrState;
	} else {
	setStyle = "error";
	return tagNameState;
	}
	}
	function closeTagNameState(type, stream, state) {
	if (type == "word") {
	var tagName = stream.current();
	if (state.context && state.context.tagName != tagName &&
	Kludges.implicitlyClosed.hasOwnProperty(state.context.tagName))
	popContext(state);
	if (state.context && state.context.tagName == tagName) {
	setStyle = "tag";
	return closeState;
	} else {
	setStyle = "tag error";
	return closeStateErr;
	}
	} else {
	setStyle = "error";
	return closeStateErr;
	}
	}

	function closeState(type, _stream, state) {
	if (type != "endTag") {
	setStyle = "error";
	return closeState;
	}
	popContext(state);
	return baseState;
	}
	function closeStateErr(type, stream, state) {
	setStyle = "error";
	return closeState(type, stream, state);
	}

	function attrState(type, _stream, state) {
	if (type == "word") {
	setStyle = "attribute";
	return attrEqState;
	} else if (type == "endTag" \|\| type == "selfcloseTag") {
	var tagName = state.tagName, tagStart = state.tagStart;
	state.tagName = state.tagStart = null;
	if (type == "selfcloseTag" \|\|
	Kludges.autoSelfClosers.hasOwnProperty(tagName)) {
	maybePopContext(state, tagName);
	} else {
	maybePopContext(state, tagName);
	state.context = new Context(state, tagName, tagStart == state.indented);
	}
	return baseState;
	}
	setStyle = "error";
	return attrState;
	}
	function attrEqState(type, stream, state) {
	if (type == "equals") return attrValueState;
	if (!Kludges.allowMissing) setStyle = "error";
	return attrState(type, stream, state);
	}
	function attrValueState(type, stream, state) {
	if (type == "string") return attrContinuedState;
	if (type == "word" && Kludges.allowUnquoted) {setStyle = "string"; return attrState;}
	setStyle = "error";
	return attrState(type, stream, state);
	}
	function attrContinuedState(type, stream, state) {
	if (type == "string") return attrContinuedState;
	return attrState(type, stream, state);
	}

	return {
	startState: function() {
	return {tokenize: inText,
	state: baseState,
	indented: 0,
	tagName: null, tagStart: null,
	context: null};
	},

	token: function(stream, state) {
	if (!state.tagName && stream.sol())
	state.indented = stream.indentation();

	if (stream.eatSpace()) return null;
	type = null;
	var style = state.tokenize(stream, state);
	if ((style \|\| type) && style != "comment") {
	setStyle = null;
	state.state = state.state(type \|\| style, stream, state);
	if (setStyle)
	style = setStyle == "error" ? style + " error" : setStyle;
	}
	return style;
	},

	indent: function(state, textAfter, fullLine) {
	var context = state.context;
	// Indent multi-line strings (e.g. css).
	if (state.tokenize.isInAttribute) {
	if (state.tagStart == state.indented)
	return state.stringStartCol + 1;
	else
	return state.indented + indentUnit;
	}
	if (context && context.noIndent) return CodeMirror.Pass;
	if (state.tokenize != inTag && state.tokenize != inText)
	return fullLine ? fullLine.match(/^(\s*)/)[0].length : 0;
	// Indent the starts of attribute names.
	if (state.tagName) {
	if (multilineTagIndentPastTag)
	return state.tagStart + state.tagName.length + 2;
	else
	return state.tagStart + indentUnit * multilineTagIndentFactor;
	}
	if (alignCDATA && /<!\[CDATA\[/.test(textAfter)) return 0;
	var tagAfter = textAfter && /^<(\/)?([\w_:\.-]*)/.exec(textAfter);
	if (tagAfter && tagAfter[1]) { // Closing tag spotted
	while (context) {
	if (context.tagName == tagAfter[2]) {
	context = context.prev;
	break;
	} else if (Kludges.implicitlyClosed.hasOwnProperty(context.tagName)) {
	context = context.prev;
	} else {
	break;
	}
	}
	} else if (tagAfter) { // Opening tag spotted
	while (context) {
	var grabbers = Kludges.contextGrabbers[context.tagName];
	if (grabbers && grabbers.hasOwnProperty(tagAfter[2]))
	context = context.prev;
	else
	break;
	}
	}
	while (context && !context.startOfLine)
	context = context.prev;
	if (context) return context.indent + indentUnit;
	else return 0;
	},

	electricInput: /<\/[\s\w:]+>$/,
	blockCommentStart: "<!--",
	blockCommentEnd: "-->",

	configuration: parserConfig.htmlMode ? "html" : "xml",
	helperType: parserConfig.htmlMode ? "html" : "xml"
	};
	});

	CodeMirror.defineMIME("text/xml", "xml");
	CodeMirror.defineMIME("application/xml", "xml");
	if (!CodeMirror.mimeModes.hasOwnProperty("text/html"))
	CodeMirror.defineMIME("text/html", {name: "xml", htmlMode: true});

	});

	},{"../../lib/codemirror":6}],11:[function(require,module,exports){
	(function (global){
	/**
	* marked - a markdown parser
	* Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)
	* https://github.com/chjj/marked
	*/

	;(function() {

	/**
	* Block-Level Grammar
	*/

	var block = {
	newline: /^\n+/,
	code: /^( {4}[^\n]+\n*)+/,
	fences: noop,
	hr: /^( [-_]){3,} *(?:\n+\|$)/,
	heading: /^ (#{1,6}) ([^\n]+?) # *(?:\n+\|$)/,
	nptable: noop,
	lheading: /^([^\n]+)\n (=\|-){2,} (?:\n+\|$)/,
	blockquote: /^( >[^\n]+(\n(?!def)[^\n]+)\n*)+/,
	list: /^( )(bull) [\s\S]+?(?:hr\|def\|\n{2,}(?! )(?!\1bull )\n\|\s*$)/,
	html: /^ (?:comment (?:\n\|\s$)\|closed (?:\n{2,}\|\s$)\|closing (?:\n{2,}\|\s*$))/,
	def: /^ \[([^\]]+)\]: <?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+\|$)/,
	table: noop,
	paragraph: /^((?:[^\n]+\n?(?!hr\|heading\|lheading\|blockquote\|tag\|def))+)\n*/,
	text: /^[^\n]+/
	};

	block.bullet = /(?:[*+-]\|\d+\.)/;
	block.item = /^( )(bull) [^\n](?:\n(?!\1bull )[^\n])/;
	block.item = replace(block.item, 'gm')
	(/bull/g, block.bullet)
	();

	block.list = replace(block.list)
	(/bull/g, block.bullet)
	('hr', '\\n+(?=\\1?(?:[-_] ){3,}(?:\\n+\|$))')
	('def', '\\n+(?=' + block.def.source + ')')
	();

	block.blockquote = replace(block.blockquote)
	('def', block.def)
	();

	block._tag = '(?!(?:'
	+ 'a\|em\|strong\|small\|s\|cite\|q\|dfn\|abbr\|data\|time\|code'
	+ '\|var\|samp\|kbd\|sub\|sup\|i\|b\|u\|mark\|ruby\|rt\|rp\|bdi\|bdo'
	+ '\|span\|br\|wbr\|ins\|del\|img)\\b)\\w+(?!:/\|[^\\w\\s@]*@)\\b';

	block.html = replace(block.html)
	('comment', /<!--[\s\S]*?-->/)
	('closed', /<(tag)[\s\S]+?<\/\1>/)
	('closing', /<tag(?:"[^"]"\|'[^']'\|[^'">])*?>/)
	(/tag/g, block._tag)
	();

	block.paragraph = replace(block.paragraph)
	('hr', block.hr)
	('heading', block.heading)
	('lheading', block.lheading)
	('blockquote', block.blockquote)
	('tag', '<' + block._tag)
	('def', block.def)
	();

	/**
	* Normal Block Grammar
	*/

	block.normal = merge({}, block);

	/**
	* GFM Block Grammar
	*/

	block.gfm = merge({}, block.normal, {
	fences: /^ (`{3,}\|~{3,})[ \.](\S+)? \n([\s\S]?)\s\1 (?:\n+\|$)/,
	paragraph: /^/,
	heading: /^ (#{1,6}) +([^\n]+?) #* *(?:\n+\|$)/
	});

	block.gfm.paragraph = replace(block.paragraph)
	('(?!', '(?!'
	+ block.gfm.fences.source.replace('\\1', '\\2') + '\|'
	+ block.list.source.replace('\\1', '\\3') + '\|')
	();

	/**
	* GFM + Tables Block Grammar
	*/

	block.tables = merge({}, block.gfm, {
	nptable: /^ (\S.\\|.)\n ([-:]+ \\|[-\| :])\n((?:.\\|.(?:\n\|$)))\n/,
	table: /^ \\|(.+)\n \\|( [-:]+[-\| :])\n((?: \\|.(?:\n\|$)))\n/
	});

	/**
	* Block Lexer
	*/

	function Lexer(options) {
	this.tokens = [];
	this.tokens.links = {};
	this.options = options \|\| marked.defaults;
	this.rules = block.normal;

	if (this.options.gfm) {
	if (this.options.tables) {
	this.rules = block.tables;
	} else {
	this.rules = block.gfm;
	}
	}
	}

	/**
	* Expose Block Rules
	*/

	Lexer.rules = block;

	/**
	* Static Lex Method
	*/

	Lexer.lex = function(src, options) {
	var lexer = new Lexer(options);
	return lexer.lex(src);
	};

	/**
	* Preprocessing
	*/

	Lexer.prototype.lex = function(src) {
	src = src
	.replace(/\r\n\|\r/g, '\n')
	.replace(/\t/g, ' ')
	.replace(/\u00a0/g, ' ')
	.replace(/\u2424/g, '\n');

	return this.token(src, true);
	};

	/**
	* Lexing
	*/

	Lexer.prototype.token = function(src, top, bq) {
	var src = src.replace(/^ +$/gm, '')
	, next
	, loose
	, cap
	, bull
	, b
	, item
	, space
	, i
	, l;

	while (src) {
	// newline
	if (cap = this.rules.newline.exec(src)) {
	src = src.substring(cap[0].length);
	if (cap[0].length > 1) {
	this.tokens.push({
	type: 'space'
	});
	}
	}

	// code
	if (cap = this.rules.code.exec(src)) {
	src = src.substring(cap[0].length);
	cap = cap[0].replace(/^ {4}/gm, '');
	this.tokens.push({
	type: 'code',
	text: !this.options.pedantic
	? cap.replace(/\n+$/, '')
	: cap
	});
	continue;
	}

	// fences (gfm)
	if (cap = this.rules.fences.exec(src)) {
	src = src.substring(cap[0].length);
	this.tokens.push({
	type: 'code',
	lang: cap[2],
	text: cap[3] \|\| ''
	});
	continue;
	}

	// heading
	if (cap = this.rules.heading.exec(src)) {
	src = src.substring(cap[0].length);
	this.tokens.push({
	type: 'heading',
	depth: cap[1].length,
	text: cap[2]
	});
	continue;
	}

	// table no leading pipe (gfm)
	if (top && (cap = this.rules.nptable.exec(src))) {
	src = src.substring(cap[0].length);

	item = {
	type: 'table',
	header: cap[1].replace(/^ \| \\| $/g, '').split(/ \\| */),
	align: cap[2].replace(/^ \|\\| $/g, '').split(/ \\| /),
	cells: cap[3].replace(/\n$/, '').split('\n')
	};

	for (i = 0; i < item.align.length; i++) {
	if (/^ -+: $/.test(item.align[i])) {
	item.align[i] = 'right';
	} else if (/^ :-+: $/.test(item.align[i])) {
	item.align[i] = 'center';
	} else if (/^ :-+ $/.test(item.align[i])) {
	item.align[i] = 'left';
	} else {
	item.align[i] = null;
	}
	}

	for (i = 0; i < item.cells.length; i++) {
	item.cells[i] = item.cells[i].split(/ \\| /);
	}

	this.tokens.push(item);

	continue;
	}

	// lheading
	if (cap = this.rules.lheading.exec(src)) {
	src = src.substring(cap[0].length);
	this.tokens.push({
	type: 'heading',
	depth: cap[2] === '=' ? 1 : 2,
	text: cap[1]
	});
	continue;
	}

	// hr
	if (cap = this.rules.hr.exec(src)) {
	src = src.substring(cap[0].length);
	this.tokens.push({
	type: 'hr'
	});
	continue;
	}

	// blockquote
	if (cap = this.rules.blockquote.exec(src)) {
	src = src.substring(cap[0].length);

	this.tokens.push({
	type: 'blockquote_start'
	});

	cap = cap[0].replace(/^ *> ?/gm, '');

	// Pass `top` to keep the current
	// "toplevel" state. This is exactly
	// how markdown.pl works.
	this.token(cap, top, true);

	this.tokens.push({
	type: 'blockquote_end'
	});

	continue;
	}

	// list
	if (cap = this.rules.list.exec(src)) {
	src = src.substring(cap[0].length);
	bull = cap[2];

	this.tokens.push({
	type: 'list_start',
	ordered: bull.length > 1
	});

	// Get each top-level item.
	cap = cap[0].match(this.rules.item);

	next = false;
	l = cap.length;
	i = 0;

	for (; i < l; i++) {
	item = cap[i];

	// Remove the list item's bullet
	// so it is seen as the next token.
	space = item.length;
	item = item.replace(/^ ([+-]\|\d+\.) +/, '');

	// Outdent whatever the
	// list item contains. Hacky.
	if (~item.indexOf('\n ')) {
	space -= item.length;
	item = !this.options.pedantic
	? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '')
	: item.replace(/^ {1,4}/gm, '');
	}

	// Determine whether the next list item belongs here.
	// Backpedal if it does not belong in this list.
	if (this.options.smartLists && i !== l - 1) {
	b = block.bullet.exec(cap[i + 1])[0];
	if (bull !== b && !(bull.length > 1 && b.length > 1)) {
	src = cap.slice(i + 1).join('\n') + src;
	i = l - 1;
	}
	}

	// Determine whether item is loose or not.
	// Use: /(^\|\n)(?! )[^\n]+\n\n(?!\s*$)/
	// for discount behavior.
	loose = next \|\| /\n\n(?!\s*$)/.test(item);
	if (i !== l - 1) {
	next = item.charAt(item.length - 1) === '\n';
	if (!loose) loose = next;
	}

	this.tokens.push({
	type: loose
	? 'loose_item_start'
	: 'list_item_start'
	});

	// Recurse.
	this.token(item, false, bq);

	this.tokens.push({
	type: 'list_item_end'
	});
	}

	this.tokens.push({
	type: 'list_end'
	});

	continue;
	}

	// html
	if (cap = this.rules.html.exec(src)) {
	src = src.substring(cap[0].length);
	this.tokens.push({
	type: this.options.sanitize
	? 'paragraph'
	: 'html',
	pre: !this.options.sanitizer
	&& (cap[1] === 'pre' \|\| cap[1] === 'script' \|\| cap[1] === 'style'),
	text: cap[0]
	});
	continue;
	}

	// def
	if ((!bq && top) && (cap = this.rules.def.exec(src))) {
	src = src.substring(cap[0].length);
	this.tokens.links[cap[1].toLowerCase()] = {
	href: cap[2],
	title: cap[3]
	};
	continue;
	}

	// table (gfm)
	if (top && (cap = this.rules.table.exec(src))) {
	src = src.substring(cap[0].length);

	item = {
	type: 'table',
	header: cap[1].replace(/^ \| \\| $/g, '').split(/ \\| */),
	align: cap[2].replace(/^ \|\\| $/g, '').split(/ \\| /),
	cells: cap[3].replace(/(?: \\| )?\n$/, '').split('\n')
	};

	for (i = 0; i < item.align.length; i++) {
	if (/^ -+: $/.test(item.align[i])) {
	item.align[i] = 'right';
	} else if (/^ :-+: $/.test(item.align[i])) {
	item.align[i] = 'center';
	} else if (/^ :-+ $/.test(item.align[i])) {
	item.align[i] = 'left';
	} else {
	item.align[i] = null;
	}
	}

	for (i = 0; i < item.cells.length; i++) {
	item.cells[i] = item.cells[i]
	.replace(/^ \\| \| \\| $/g, '')
	.split(/ \\| /);
	}

	this.tokens.push(item);

	continue;
	}

	// top-level paragraph
	if (top && (cap = this.rules.paragraph.exec(src))) {
	src = src.substring(cap[0].length);
	this.tokens.push({
	type: 'paragraph',
	text: cap[1].charAt(cap[1].length - 1) === '\n'
	? cap[1].slice(0, -1)
	: cap[1]
	});
	continue;
	}

	// text
	if (cap = this.rules.text.exec(src)) {
	// Top-level should never reach here.
	src = src.substring(cap[0].length);
	this.tokens.push({
	type: 'text',
	text: cap[0]
	});
	continue;
	}

	if (src) {
	throw new
	Error('Infinite loop on byte: ' + src.charCodeAt(0));
	}
	}

	return this.tokens;
	};

	/**
	* Inline-Level Grammar
	*/

	var inline = {
	escape: /^\\([\\`*{}\[\]()#+\-.!_>])/,
	autolink: /^<([^ >]+(@\|:\/)[^ >]+)>/,
	url: noop,
	tag: /^<!--[\s\S]?-->\|^<\/?\w+(?:"[^"]"\|'[^']'\|[^'">])?>/,
	link: /^!?\[(inside)\]$href$/,
	reflink: /^!?\[(inside)\]\s\[([^\]])\]/,
	nolink: /^!?\[((?:\[[^\]]\]\|[^\[\]]))\]/,
	strong: /^__([\s\S]+?)__(?!_)\|^\\([\s\S]+?)\\(?!\*)/,
	em: /^\b_((?:[^_]\|__)+?)_\b\|^\((?:\\\|[\s\S])+?)\(?!\*)/,
	code: /^(`+)\s([\s\S]?[^`])\s*\1(?!`)/,
	br: /^ {2,}\n(?!\s*$)/,
	del: noop,
	text: /^[\s\S]+?(?=[\\<!\[_*`]\| {2,}\n\|$)/
	};

	inline._inside = /(?:\[[^\]]\]\|[^\[\]]\|\](?=[^\[]\]))*/;
	inline._href = /\s<?([\s\S]?)>?(?:\s+['"]([\s\S]?)['"])?\s/;

	inline.link = replace(inline.link)
	('inside', inline._inside)
	('href', inline._href)
	();

	inline.reflink = replace(inline.reflink)
	('inside', inline._inside)
	();

	/**
	* Normal Inline Grammar
	*/

	inline.normal = merge({}, inline);

	/**
	* Pedantic Inline Grammar
	*/

	inline.pedantic = merge({}, inline.normal, {
	strong: /^__(?=\S)([\s\S]?\S)__(?!_)\|^\\(?=\S)([\s\S]?\S)\\(?!\*)/,
	em: /^_(?=\S)([\s\S]?\S)_(?!_)\|^\(?=\S)([\s\S]?\S)\(?!\*)/
	});

	/**
	* GFM Inline Grammar
	*/

	inline.gfm = merge({}, inline.normal, {
	escape: replace(inline.escape)('])', '~\|])')(),
	url: /^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,
	del: /^~~(?=\S)([\s\S]*?\S)~~/,
	text: replace(inline.text)
	(']\|', '~]\|')
	('\|', '\|https?://\|')
	()
	});

	/**
	* GFM + Line Breaks Inline Grammar
	*/

	inline.breaks = merge({}, inline.gfm, {
	br: replace(inline.br)('{2,}', '*')(),
	text: replace(inline.gfm.text)('{2,}', '*')()
	});

	/**
	* Inline Lexer & Compiler
	*/

	function InlineLexer(links, options) {
	this.options = options \|\| marked.defaults;
	this.links = links;
	this.rules = inline.normal;
	this.renderer = this.options.renderer \|\| new Renderer;
	this.renderer.options = this.options;

	if (!this.links) {
	throw new
	Error('Tokens array requires a `links` property.');
	}

	if (this.options.gfm) {
	if (this.options.breaks) {
	this.rules = inline.breaks;
	} else {
	this.rules = inline.gfm;
	}
	} else if (this.options.pedantic) {
	this.rules = inline.pedantic;
	}
	}

	/**
	* Expose Inline Rules
	*/

	InlineLexer.rules = inline;

	/**
	* Static Lexing/Compiling Method
	*/

	InlineLexer.output = function(src, links, options) {
	var inline = new InlineLexer(links, options);
	return inline.output(src);
	};

	/**
	* Lexing/Compiling
	*/

	InlineLexer.prototype.output = function(src) {
	var out = ''
	, link
	, text
	, href
	, cap;

	while (src) {
	// escape
	if (cap = this.rules.escape.exec(src)) {
	src = src.substring(cap[0].length);
	out += cap[1];
	continue;
	}

	// autolink
	if (cap = this.rules.autolink.exec(src)) {
	src = src.substring(cap[0].length);
	if (cap[2] === '@') {
	text = cap[1].charAt(6) === ':'
	? this.mangle(cap[1].substring(7))
	: this.mangle(cap[1]);
	href = this.mangle('mailto:') + text;
	} else {
	text = escape(cap[1]);
	href = text;
	}
	out += this.renderer.link(href, null, text);
	continue;
	}

	// url (gfm)
	if (!this.inLink && (cap = this.rules.url.exec(src))) {
	src = src.substring(cap[0].length);
	text = escape(cap[1]);
	href = text;
	out += this.renderer.link(href, null, text);
	continue;
	}

	// tag
	if (cap = this.rules.tag.exec(src)) {
	if (!this.inLink && /^<a /i.test(cap[0])) {
	this.inLink = true;
	} else if (this.inLink && /^<\/a>/i.test(cap[0])) {
	this.inLink = false;
	}
	src = src.substring(cap[0].length);
	out += this.options.sanitize
	? this.options.sanitizer
	? this.options.sanitizer(cap[0])
	: escape(cap[0])
	: cap[0]
	continue;
	}

	// link
	if (cap = this.rules.link.exec(src)) {
	src = src.substring(cap[0].length);
	this.inLink = true;
	out += this.outputLink(cap, {
	href: cap[2],
	title: cap[3]
	});
	this.inLink = false;
	continue;
	}

	// reflink, nolink
	if ((cap = this.rules.reflink.exec(src))
	\|\| (cap = this.rules.nolink.exec(src))) {
	src = src.substring(cap[0].length);
	link = (cap[2] \|\| cap[1]).replace(/\s+/g, ' ');
	link = this.links[link.toLowerCase()];
	if (!link \|\| !link.href) {
	out += cap[0].charAt(0);
	src = cap[0].substring(1) + src;
	continue;
	}
	this.inLink = true;
	out += this.outputLink(cap, link);
	this.inLink = false;
	continue;
	}

	// strong
	if (cap = this.rules.strong.exec(src)) {
	src = src.substring(cap[0].length);
	out += this.renderer.strong(this.output(cap[2] \|\| cap[1]));
	continue;
	}

	// em
	if (cap = this.rules.em.exec(src)) {
	src = src.substring(cap[0].length);
	out += this.renderer.em(this.output(cap[2] \|\| cap[1]));
	continue;
	}

	// code
	if (cap = this.rules.code.exec(src)) {
	src = src.substring(cap[0].length);
	out += this.renderer.codespan(escape(cap[2], true));
	continue;
	}

	// br
	if (cap = this.rules.br.exec(src)) {
	src = src.substring(cap[0].length);
	out += this.renderer.br();
	continue;
	}

	// del (gfm)
	if (cap = this.rules.del.exec(src)) {
	src = src.substring(cap[0].length);
	out += this.renderer.del(this.output(cap[1]));
	continue;
	}

	// text
	if (cap = this.rules.text.exec(src)) {
	src = src.substring(cap[0].length);
	out += this.renderer.text(escape(this.smartypants(cap[0])));
	continue;
	}

	if (src) {
	throw new
	Error('Infinite loop on byte: ' + src.charCodeAt(0));
	}
	}

	return out;
	};

	/**
	* Compile Link
	*/

	InlineLexer.prototype.outputLink = function(cap, link) {
	var href = escape(link.href)
	, title = link.title ? escape(link.title) : null;

	return cap[0].charAt(0) !== '!'
	? this.renderer.link(href, title, this.output(cap[1]))
	: this.renderer.image(href, title, escape(cap[1]));
	};

	/**
	* Smartypants Transformations
	*/

	InlineLexer.prototype.smartypants = function(text) {
	if (!this.options.smartypants) return text;
	return text
	// em-dashes
	.replace(/---/g, '\u2014')
	// en-dashes
	.replace(/--/g, '\u2013')
	// opening singles
	.replace(/(^\|[-\u2014/(\[{"\s])'/g, '$1\u2018')
	// closing singles & apostrophes
	.replace(/'/g, '\u2019')
	// opening doubles
	.replace(/(^\|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
	// closing doubles
	.replace(/"/g, '\u201d')
	// ellipses
	.replace(/\.{3}/g, '\u2026');
	};

	/**
	* Mangle Links
	*/

	InlineLexer.prototype.mangle = function(text) {
	if (!this.options.mangle) return text;
	var out = ''
	, l = text.length
	, i = 0
	, ch;

	for (; i < l; i++) {
	ch = text.charCodeAt(i);
	if (Math.random() > 0.5) {
	ch = 'x' + ch.toString(16);
	}
	out += '&#' + ch + ';';
	}

	return out;
	};

	/**
	* Renderer
	*/

	function Renderer(options) {
	this.options = options \|\| {};
	}

	Renderer.prototype.code = function(code, lang, escaped) {
	if (this.options.highlight) {
	var out = this.options.highlight(code, lang);
	if (out != null && out !== code) {
	escaped = true;
	code = out;
	}
	}

	if (!lang) {
	return '<pre><code>'
	+ (escaped ? code : escape(code, true))
	+ '\n</code></pre>';
	}

	return '<pre><code class="'
	+ this.options.langPrefix
	+ escape(lang, true)
	+ '">'
	+ (escaped ? code : escape(code, true))
	+ '\n</code></pre>\n';
	};

	Renderer.prototype.blockquote = function(quote) {
	return '<blockquote>\n' + quote + '</blockquote>\n';
	};

	Renderer.prototype.html = function(html) {
	return html;
	};

	Renderer.prototype.heading = function(text, level, raw) {
	return '<h'
	+ level
	+ ' id="'
	+ this.options.headerPrefix
	+ raw.toLowerCase().replace(/[^\w]+/g, '-')
	+ '">'
	+ text
	+ '</h'
	+ level
	+ '>\n';
	};

	Renderer.prototype.hr = function() {
	return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
	};

	Renderer.prototype.list = function(body, ordered) {
	var type = ordered ? 'ol' : 'ul';
	return '<' + type + '>\n' + body + '</' + type + '>\n';
	};

	Renderer.prototype.listitem = function(text) {
	return '<li>' + text + '</li>\n';
	};

	Renderer.prototype.paragraph = function(text) {
	return '<p>' + text + '</p>\n';
	};

	Renderer.prototype.table = function(header, body) {
	return '<table>\n'
	+ '<thead>\n'
	+ header
	+ '</thead>\n'
	+ '<tbody>\n'
	+ body
	+ '</tbody>\n'
	+ '</table>\n';
	};

	Renderer.prototype.tablerow = function(content) {
	return '<tr>\n' + content + '</tr>\n';
	};

	Renderer.prototype.tablecell = function(content, flags) {
	var type = flags.header ? 'th' : 'td';
	var tag = flags.align
	? '<' + type + ' style="text-align:' + flags.align + '">'
	: '<' + type + '>';
	return tag + content + '</' + type + '>\n';
	};

	// span level renderer
	Renderer.prototype.strong = function(text) {
	return '<strong>' + text + '</strong>';
	};

	Renderer.prototype.em = function(text) {
	return '<em>' + text + '</em>';
	};

	Renderer.prototype.codespan = function(text) {
	return '<code>' + text + '</code>';
	};

	Renderer.prototype.br = function() {
	return this.options.xhtml ? '<br/>' : '<br>';
	};

	Renderer.prototype.del = function(text) {
	return '<del>' + text + '</del>';
	};

	Renderer.prototype.link = function(href, title, text) {
	if (this.options.sanitize) {
	try {
	var prot = decodeURIComponent(unescape(href))
	.replace(/[^\w:]/g, '')
	.toLowerCase();
	} catch (e) {
	return '';
	}
	if (prot.indexOf('javascript:') === 0 \|\| prot.indexOf('vbscript:') === 0) {
	return '';
	}
	}
	var out = '<a href="' + href + '"';
	if (title) {
	out += ' title="' + title + '"';
	}
	out += '>' + text + '</a>';
	return out;
	};

	Renderer.prototype.image = function(href, title, text) {
	var out = '<img src="' + href + '" alt="' + text + '"';
	if (title) {
	out += ' title="' + title + '"';
	}
	out += this.options.xhtml ? '/>' : '>';
	return out;
	};

	Renderer.prototype.text = function(text) {
	return text;
	};

	/**
	* Parsing & Compiling
	*/

	function Parser(options) {
	this.tokens = [];
	this.token = null;
	this.options = options \|\| marked.defaults;
	this.options.renderer = this.options.renderer \|\| new Renderer;
	this.renderer = this.options.renderer;
	this.renderer.options = this.options;
	}

	/**
	* Static Parse Method
	*/

	Parser.parse = function(src, options, renderer) {
	var parser = new Parser(options, renderer);
	return parser.parse(src);
	};

	/**
	* Parse Loop
	*/

	Parser.prototype.parse = function(src) {
	this.inline = new InlineLexer(src.links, this.options, this.renderer);
	this.tokens = src.reverse();

	var out = '';
	while (this.next()) {
	out += this.tok();
	}

	return out;
	};

	/**
	* Next Token
	*/

	Parser.prototype.next = function() {
	return this.token = this.tokens.pop();
	};

	/**
	* Preview Next Token
	*/

	Parser.prototype.peek = function() {
	return this.tokens[this.tokens.length - 1] \|\| 0;
	};

	/**
	* Parse Text Tokens
	*/

	Parser.prototype.parseText = function() {
	var body = this.token.text;

	while (this.peek().type === 'text') {
	body += '\n' + this.next().text;
	}

	return this.inline.output(body);
	};

	/**
	* Parse Current Token
	*/

	Parser.prototype.tok = function() {
	switch (this.token.type) {
	case 'space': {
	return '';
	}
	case 'hr': {
	return this.renderer.hr();
	}
	case 'heading': {
	return this.renderer.heading(
	this.inline.output(this.token.text),
	this.token.depth,
	this.token.text);
	}
	case 'code': {
	return this.renderer.code(this.token.text,
	this.token.lang,
	this.token.escaped);
	}
	case 'table': {
	var header = ''
	, body = ''
	, i
	, row
	, cell
	, flags
	, j;

	// header
	cell = '';
	for (i = 0; i < this.token.header.length; i++) {
	flags = { header: true, align: this.token.align[i] };
	cell += this.renderer.tablecell(
	this.inline.output(this.token.header[i]),
	{ header: true, align: this.token.align[i] }
	);
	}
	header += this.renderer.tablerow(cell);

	for (i = 0; i < this.token.cells.length; i++) {
	row = this.token.cells[i];

	cell = '';
	for (j = 0; j < row.length; j++) {
	cell += this.renderer.tablecell(
	this.inline.output(row[j]),
	{ header: false, align: this.token.align[j] }
	);
	}

	body += this.renderer.tablerow(cell);
	}
	return this.renderer.table(header, body);
	}
	case 'blockquote_start': {
	var body = '';

	while (this.next().type !== 'blockquote_end') {
	body += this.tok();
	}

	return this.renderer.blockquote(body);
	}
	case 'list_start': {
	var body = ''
	, ordered = this.token.ordered;

	while (this.next().type !== 'list_end') {
	body += this.tok();
	}

	return this.renderer.list(body, ordered);
	}
	case 'list_item_start': {
	var body = '';

	while (this.next().type !== 'list_item_end') {
	body += this.token.type === 'text'
	? this.parseText()
	: this.tok();
	}

	return this.renderer.listitem(body);
	}
	case 'loose_item_start': {
	var body = '';

	while (this.next().type !== 'list_item_end') {
	body += this.tok();
	}

	return this.renderer.listitem(body);
	}
	case 'html': {
	var html = !this.token.pre && !this.options.pedantic
	? this.inline.output(this.token.text)
	: this.token.text;
	return this.renderer.html(html);
	}
	case 'paragraph': {
	return this.renderer.paragraph(this.inline.output(this.token.text));
	}
	case 'text': {
	return this.renderer.paragraph(this.parseText());
	}
	}
	};

	/**
	* Helpers
	*/

	function escape(html, encode) {
	return html
	.replace(!encode ? /&(?!#?\w+;)/g : /&/g, '&')
	.replace(/</g, '<')
	.replace(/>/g, '>')
	.replace(/"/g, '"')
	.replace(/'/g, ''');
	}

	function unescape(html) {
	return html.replace(/&([#\w]+);/g, function(_, n) {
	n = n.toLowerCase();
	if (n === 'colon') return ':';
	if (n.charAt(0) === '#') {
	return n.charAt(1) === 'x'
	? String.fromCharCode(parseInt(n.substring(2), 16))
	: String.fromCharCode(+n.substring(1));
	}
	return '';
	});
	}

	function replace(regex, opt) {
	regex = regex.source;
	opt = opt \|\| '';
	return function self(name, val) {
	if (!name) return new RegExp(regex, opt);
	val = val.source \|\| val;
	val = val.replace(/(^\|[^\[])\^/g, '$1');
	regex = regex.replace(name, val);
	return self;
	};
	}

	function noop() {}
	noop.exec = noop;

	function merge(obj) {
	var i = 1
	, target
	, key;

	for (; i < arguments.length; i++) {
	target = arguments[i];
	for (key in target) {
	if (Object.prototype.hasOwnProperty.call(target, key)) {
	obj[key] = target[key];
	}
	}
	}

	return obj;
	}


	/**
	* Marked
	*/

	function marked(src, opt, callback) {
	if (callback \|\| typeof opt === 'function') {
	if (!callback) {
	callback = opt;
	opt = null;
	}

	opt = merge({}, marked.defaults, opt \|\| {});

	var highlight = opt.highlight
	, tokens
	, pending
	, i = 0;

	try {
	tokens = Lexer.lex(src, opt)
	} catch (e) {
	return callback(e);
	}

	pending = tokens.length;

	var done = function(err) {
	if (err) {
	opt.highlight = highlight;
	return callback(err);
	}

	var out;

	try {
	out = Parser.parse(tokens, opt);
	} catch (e) {
	err = e;
	}

	opt.highlight = highlight;

	return err
	? callback(err)
	: callback(null, out);
	};

	if (!highlight \|\| highlight.length < 3) {
	return done();
	}

	delete opt.highlight;

	if (!pending) return done();

	for (; i < tokens.length; i++) {
	(function(token) {
	if (token.type !== 'code') {
	return --pending \|\| done();
	}
	return highlight(token.text, token.lang, function(err, code) {
	if (err) return done(err);
	if (code == null \|\| code === token.text) {
	return --pending \|\| done();
	}
	token.text = code;
	token.escaped = true;
	--pending \|\| done();
	});
	})(tokens[i]);
	}

	return;
	}
	try {
	if (opt) opt = merge({}, marked.defaults, opt);
	return Parser.parse(Lexer.lex(src, opt), opt);
	} catch (e) {
	e.message += '\nPlease report this to https://github.com/chjj/marked.';
	if ((opt \|\| marked.defaults).silent) {
	return '<p>An error occured:</p><pre>'
	+ escape(e.message + '', true)
	+ '</pre>';
	}
	throw e;
	}
	}

	/**
	* Options
	*/

	marked.options =
	marked.setOptions = function(opt) {
	merge(marked.defaults, opt);
	return marked;
	};

	marked.defaults = {
	gfm: true,
	tables: true,
	breaks: false,
	pedantic: false,
	sanitize: false,
	sanitizer: null,
	mangle: true,
	smartLists: false,
	silent: false,
	highlight: null,
	langPrefix: 'lang-',
	smartypants: false,
	headerPrefix: '',
	renderer: new Renderer,
	xhtml: false
	};

	/**
	* Expose
	*/

	marked.Parser = Parser;
	marked.parser = Parser.parse;

	marked.Renderer = Renderer;

	marked.Lexer = Lexer;
	marked.lexer = Lexer.lex;

	marked.InlineLexer = InlineLexer;
	marked.inlineLexer = InlineLexer.output;

	marked.parse = marked;

	if (typeof module !== 'undefined' && typeof exports === 'object') {
	module.exports = marked;
	} else if (typeof define === 'function' && define.amd) {
	define(function() { return marked; });
	} else {
	this.marked = marked;
	}

	}).call(function() {
	return this \|\| (typeof window !== 'undefined' ? window : global);
	}());

	}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

	},{}],12:[function(require,module,exports){
	// CodeMirror, copyright (c) by Marijn Haverbeke and others
	// Distributed under an MIT license: http://codemirror.net/LICENSE

	var CodeMirror = require("codemirror");

	CodeMirror.commands.tabAndIndentMarkdownList = function (cm) {
	var ranges = cm.listSelections();
	var pos = ranges[0].head;
	var eolState = cm.getStateAfter(pos.line);
	var inList = eolState.list !== false;

	if (inList) {
	cm.execCommand("indentMore");
	return;
	}

	if (cm.options.indentWithTabs) {
	cm.execCommand("insertTab");
	}
	else {
	var spaces = Array(cm.options.tabSize + 1).join(" ");
	cm.replaceSelection(spaces);
	}
	};

	CodeMirror.commands.shiftTabAndUnindentMarkdownList = function (cm) {
	var ranges = cm.listSelections();
	var pos = ranges[0].head;
	var eolState = cm.getStateAfter(pos.line);
	var inList = eolState.list !== false;

	if (inList) {
	cm.execCommand("indentLess");
	return;
	}

	if (cm.options.indentWithTabs) {
	cm.execCommand("insertTab");
	}
	else {
	var spaces = Array(cm.options.tabSize + 1).join(" ");
	cm.replaceSelection(spaces);
	}
	};

	},{"codemirror":6}],13:[function(require,module,exports){
	/global require,module/
	"use strict";
	var CodeMirror = require("codemirror");
	require("codemirror/addon/edit/continuelist.js");
	require("./codemirror/tablist");
	require("codemirror/addon/display/fullscreen.js");
	require("codemirror/mode/markdown/markdown.js");
	require("codemirror/addon/mode/overlay.js");
	require("codemirror/mode/gfm/gfm.js");
	require("codemirror/mode/xml/xml.js");
	require("spell-checker");
	var marked = require("marked");


	// Some variables
	var isMac = /Mac/.test(navigator.platform);

	var shortcuts = {
	"Cmd-B": toggleBold,
	"Cmd-I": toggleItalic,
	"Cmd-K": drawLink,
	"Cmd-H": toggleHeadingSmaller,
	"Shift-Cmd-H": toggleHeadingBigger,
	"Cmd-Alt-I": drawImage,
	"Cmd-'": toggleBlockquote,
	"Cmd-Alt-L": toggleOrderedList,
	"Cmd-L": toggleUnorderedList,
	"Cmd-Alt-C": toggleCodeBlock,
	"Cmd-P": togglePreview
	};

	var isMobile = function() {
	var check = false;
	(function(a) {
	if(/(android\|bb\d+\|meego).+mobile\|avantgo\|bada\/\|blackberry\|blazer\|compal\|elaine\|fennec\|hiptop\|iemobile\|ip(hone\|od)\|iris\|kindle\|lge \|maemo\|midp\|mmp\|mobile.+firefox\|netfront\|opera m(ob\|in)i\|palm( os)?\|phone\|p(ixi\|re)\/\|plucker\|pocket\|psp\|series(4\|6)0\|symbian\|treo\|up\.(browser\|link)\|vodafone\|wap\|windows ce\|xda\|xiino\|android\|ipad\|playbook\|silk/i.test(a) \|\| /1207\|6310\|6590\|3gso\|4thp\|50[1-6]i\|770s\|802s\|a wa\|abac\|ac(er\|oo\|s\-)\|ai(ko\|rn)\|al(av\|ca\|co)\|amoi\|an(ex\|ny\|yw)\|aptu\|ar(ch\|go)\|as(te\|us)\|attw\|au(di\|\-m\|r \|s )\|avan\|be(ck\|ll\|nq)\|bi(lb\|rd)\|bl(ac\|az)\|br(e\|v)w\|bumb\|bw\-(n\|u)\|c55\/\|capi\|ccwa\|cdm\-\|cell\|chtm\|cldc\|cmd\-\|co(mp\|nd)\|craw\|da(it\|ll\|ng)\|dbte\|dc\-s\|devi\|dica\|dmob\|do(c\|p)o\|ds(12\|\-d)\|el(49\|ai)\|em(l2\|ul)\|er(ic\|k0)\|esl8\|ez([4-7]0\|os\|wa\|ze)\|fetc\|fly(\-\|_)\|g1 u\|g560\|gene\|gf\-5\|g\-mo\|go(\.w\|od)\|gr(ad\|un)\|haie\|hcit\|hd\-(m\|p\|t)\|hei\-\|hi(pt\|ta)\|hp( i\|ip)\|hs\-c\|ht(c(\-\| \|_\|a\|g\|p\|s\|t)\|tp)\|hu(aw\|tc)\|i\-(20\|go\|ma)\|i230\|iac( \|\-\|\/)\|ibro\|idea\|ig01\|ikom\|im1k\|inno\|ipaq\|iris\|ja(t\|v)a\|jbro\|jemu\|jigs\|kddi\|keji\|kgt( \|\/)\|klon\|kpt \|kwc\-\|kyo(c\|k)\|le(no\|xi)\|lg( g\|\/(k\|l\|u)\|50\|54\|\-[a-w])\|libw\|lynx\|m1\-w\|m3ga\|m50\/\|ma(te\|ui\|xo)\|mc(01\|21\|ca)\|m\-cr\|me(rc\|ri)\|mi(o8\|oa\|ts)\|mmef\|mo(01\|02\|bi\|de\|do\|t(\-\| \|o\|v)\|zz)\|mt(50\|p1\|v )\|mwbp\|mywa\|n10[0-2]\|n20[2-3]\|n30(0\|2)\|n50(0\|2\|5)\|n7(0(0\|1)\|10)\|ne((c\|m)\-\|on\|tf\|wf\|wg\|wt)\|nok(6\|i)\|nzph\|o2im\|op(ti\|wv)\|oran\|owg1\|p800\|pan(a\|d\|t)\|pdxg\|pg(13\|\-([1-8]\|c))\|phil\|pire\|pl(ay\|uc)\|pn\-2\|po(ck\|rt\|se)\|prox\|psio\|pt\-g\|qa\-a\|qc(07\|12\|21\|32\|60\|\-[2-7]\|i\-)\|qtek\|r380\|r600\|raks\|rim9\|ro(ve\|zo)\|s55\/\|sa(ge\|ma\|mm\|ms\|ny\|va)\|sc(01\|h\-\|oo\|p\-)\|sdk\/\|se(c(\-\|0\|1)\|47\|mc\|nd\|ri)\|sgh\-\|shar\|sie(\-\|m)\|sk\-0\|sl(45\|id)\|sm(al\|ar\|b3\|it\|t5)\|so(ft\|ny)\|sp(01\|h\-\|v\-\|v )\|sy(01\|mb)\|t2(18\|50)\|t6(00\|10\|18)\|ta(gt\|lk)\|tcl\-\|tdg\-\|tel(i\|m)\|tim\-\|t\-mo\|to(pl\|sh)\|ts(70\|m\-\|m3\|m5)\|tx\-9\|up(\.b\|g1\|si)\|utst\|v400\|v750\|veri\|vi(rg\|te)\|vk(40\|5[0-3]\|\-v)\|vm40\|voda\|vulc\|vx(52\|53\|60\|61\|70\|80\|81\|83\|85\|98)\|w3c(\-\| )\|webc\|whit\|wi(g \|nc\|nw)\|wmlb\|wonu\|x700\|yas\-\|your\|zeto\|zte\-/i.test(a.substr(0, 4))) check = true;
	})(navigator.userAgent \|\| navigator.vendor \|\| window.opera);
	return check;
	};


	/**
	* Fix shortcut. Mac use Command, others use Ctrl.
	*/
	function fixShortcut(name) {
	if(isMac) {
	name = name.replace("Ctrl", "Cmd");
	} else {
	name = name.replace("Cmd", "Ctrl");
	}
	return name;
	}


	/**
	* Create icon element for toolbar.
	*/
	function createIcon(options, enableTooltips) {
	options = options \|\| {};
	var el = document.createElement("a");
	enableTooltips = (enableTooltips == undefined) ? true : enableTooltips;

	if(options.title && enableTooltips) {
	el.title = options.title;

	if(isMac) {
	el.title = el.title.replace("Ctrl", "⌘");
	el.title = el.title.replace("Alt", "⌥");
	}
	}

	el.tabIndex = -1;
	el.className = options.className;
	return el;
	}

	function createSep() {
	var el = document.createElement("i");
	el.className = "separator";
	el.innerHTML = "\|";
	return el;
	}


	/**
	* The state of CodeMirror at the given position.
	*/
	function getState(cm, pos) {
	pos = pos \|\| cm.getCursor("start");
	var stat = cm.getTokenAt(pos);
	if(!stat.type) return {};

	var types = stat.type.split(" ");

	var ret = {},
	data, text;
	for(var i = 0; i < types.length; i++) {
	data = types[i];
	if(data === "strong") {
	ret.bold = true;
	} else if(data === "variable-2") {
	text = cm.getLine(pos.line);
	if(/^\s*\d+\.\s/.test(text)) {
	ret["ordered-list"] = true;
	} else {
	ret["unordered-list"] = true;
	}
	} else if(data === "atom") {
	ret.quote = true;
	} else if(data === "em") {
	ret.italic = true;
	} else if(data === "quote") {
	ret.quote = true;
	} else if(data === "strikethrough") {
	ret.strikethrough = true;
	} else if(data === "comment") {
	ret.code = true;
	}
	}
	return ret;
	}


	// Saved overflow setting
	var saved_overflow = "";

	/**
	* Toggle full screen of the editor.
	*/
	function toggleFullScreen(editor) {
	// Set fullscreen
	var cm = editor.codemirror;
	cm.setOption("fullScreen", !cm.getOption("fullScreen"));


	// Prevent scrolling on body during fullscreen active
	if(cm.getOption("fullScreen")) {
	saved_overflow = document.body.style.overflow;
	document.body.style.overflow = "hidden";
	} else {
	document.body.style.overflow = saved_overflow;
	}


	// Update toolbar class
	var wrap = cm.getWrapperElement();

	if(!/fullscreen/.test(wrap.previousSibling.className)) {
	wrap.previousSibling.className += " fullscreen";
	} else {
	wrap.previousSibling.className = wrap.previousSibling.className.replace(/\s*fullscreen\b/, "");
	}


	// Update toolbar button
	var toolbarButton = editor.toolbarElements.fullscreen;

	if(!/active/.test(toolbarButton.className)) {
	toolbarButton.className += " active";
	} else {
	toolbarButton.className = toolbarButton.className.replace(/\sactive\s/g, "");
	}


	// Hide side by side if needed
	var sidebyside = cm.getWrapperElement().nextSibling;
	if(/editor-preview-active-side/.test(sidebyside.className))
	toggleSideBySide(editor);
	}


	/**
	* Action for toggling bold.
	*/
	function toggleBold(editor) {
	_toggleBlock(editor, "bold", editor.options.blockStyles.bold);
	}


	/**
	* Action for toggling italic.
	*/
	function toggleItalic(editor) {
	_toggleBlock(editor, "italic", editor.options.blockStyles.italic);
	}


	/**
	* Action for toggling strikethrough.
	*/
	function toggleStrikethrough(editor) {
	_toggleBlock(editor, "strikethrough", "~~");
	}

	/**
	* Action for toggling code block.
	*/
	function toggleCodeBlock(editor) {
	_toggleBlock(editor, "code", "```\r\n", "\r\n```");
	}

	/**
	* Action for toggling blockquote.
	*/
	function toggleBlockquote(editor) {
	var cm = editor.codemirror;
	_toggleLine(cm, "quote");
	}

	/**
	* Action for toggling heading size: normal -> h1 -> h2 -> h3 -> h4 -> h5 -> h6 -> normal
	*/
	function toggleHeadingSmaller(editor) {
	var cm = editor.codemirror;
	_toggleHeading(cm, "smaller");
	}

	/**
	* Action for toggling heading size: normal -> h6 -> h5 -> h4 -> h3 -> h2 -> h1 -> normal
	*/
	function toggleHeadingBigger(editor) {
	var cm = editor.codemirror;
	_toggleHeading(cm, "bigger");
	}

	/**
	* Action for toggling heading size 1
	*/
	function toggleHeading1(editor) {
	var cm = editor.codemirror;
	_toggleHeading(cm, undefined, 1);
	}

	/**
	* Action for toggling heading size 2
	*/
	function toggleHeading2(editor) {
	var cm = editor.codemirror;
	_toggleHeading(cm, undefined, 2);
	}

	/**
	* Action for toggling heading size 3
	*/
	function toggleHeading3(editor) {
	var cm = editor.codemirror;
	_toggleHeading(cm, undefined, 3);
	}


	/**
	* Action for toggling ul.
	*/
	function toggleUnorderedList(editor) {
	var cm = editor.codemirror;
	_toggleLine(cm, "unordered-list");
	}


	/**
	* Action for toggling ol.
	*/
	function toggleOrderedList(editor) {
	var cm = editor.codemirror;
	_toggleLine(cm, "ordered-list");
	}

	/**
	* Action for drawing a link.
	*/
	function drawLink(editor) {
	var cm = editor.codemirror;
	var stat = getState(cm);
	var options = editor.options;
	_replaceSelection(cm, stat.link, options.insertTexts.link);
	}

	/**
	* Action for drawing an img.
	*/
	function drawImage(editor) {
	var cm = editor.codemirror;
	var stat = getState(cm);
	var options = editor.options;
	_replaceSelection(cm, stat.image, options.insertTexts.image);
	}

	/**
	* Action for drawing a table.
	*/
	function drawTable(editor) {
	var cm = editor.codemirror;
	var stat = getState(cm);
	var options = editor.options;
	_replaceSelection(cm, stat.table, options.insertTexts.table);
	}

	/**
	* Action for drawing a horizontal rule.
	*/
	function drawHorizontalRule(editor) {
	var cm = editor.codemirror;
	var stat = getState(cm);
	var options = editor.options;
	_replaceSelection(cm, stat.image, options.insertTexts.horizontalRule);
	}


	/**
	* Undo action.
	*/
	function undo(editor) {
	var cm = editor.codemirror;
	cm.undo();
	cm.focus();
	}


	/**
	* Redo action.
	*/
	function redo(editor) {
	var cm = editor.codemirror;
	cm.redo();
	cm.focus();
	}


	/**
	* Toggle side by side preview
	*/
	function toggleSideBySide(editor) {
	var cm = editor.codemirror;
	var wrapper = cm.getWrapperElement();
	var preview = wrapper.nextSibling;
	var toolbarButton = editor.toolbarElements["side-by-side"];

	if(/editor-preview-active-side/.test(preview.className)) {
	preview.className = preview.className.replace(
	/\seditor-preview-active-side\s/g, ""
	);
	toolbarButton.className = toolbarButton.className.replace(/\sactive\s/g, "");
	wrapper.className = wrapper.className.replace(/\sCodeMirror-sided\s/g, " ");
	} else {
	// When the preview button is clicked for the first time,
	// give some time for the transition from editor.css to fire and the view to slide from right to left,
	// instead of just appearing.
	setTimeout(function() {
	if(!cm.getOption("fullScreen"))
	toggleFullScreen(editor);
	preview.className += " editor-preview-active-side";
	}, 1);
	toolbarButton.className += " active";
	wrapper.className += " CodeMirror-sided";
	}

	// Hide normal preview if active
	var previewNormal = wrapper.lastChild;
	if(/editor-preview-active/.test(previewNormal.className)) {
	previewNormal.className = previewNormal.className.replace(
	/\seditor-preview-active\s/g, ""
	);
	var toolbar = editor.toolbarElements.preview;
	var toolbar_div = wrapper.previousSibling;
	toolbar.className = toolbar.className.replace(/\sactive\s/g, "");
	toolbar_div.className = toolbar_div.className.replace(/\sdisabled-for-preview/g, "");
	}

	// Start preview with the current text
	preview.innerHTML = editor.options.previewRender(editor.value(), preview);

	// Updates preview
	cm.on("update", function() {
	preview.innerHTML = editor.options.previewRender(editor.value(), preview);
	});
	}


	/**
	* Preview action.
	*/
	function togglePreview(editor) {
	var cm = editor.codemirror;
	var wrapper = cm.getWrapperElement();
	var toolbar_div = wrapper.previousSibling;
	var toolbar = editor.toolbarElements.preview;
	var preview = wrapper.lastChild;
	if(!preview \|\| !/editor-preview/.test(preview.className)) {
	preview = document.createElement("div");
	preview.className = "editor-preview";
	wrapper.appendChild(preview);
	}
	if(/editor-preview-active/.test(preview.className)) {
	preview.className = preview.className.replace(
	/\seditor-preview-active\s/g, ""
	);
	toolbar.className = toolbar.className.replace(/\sactive\s/g, "");
	toolbar_div.className = toolbar_div.className.replace(/\sdisabled-for-preview/g, "");
	} else {
	// When the preview button is clicked for the first time,
	// give some time for the transition from editor.css to fire and the view to slide from right to left,
	// instead of just appearing.
	setTimeout(function() {
	preview.className += " editor-preview-active";
	}, 1);
	toolbar.className += " active";
	toolbar_div.className += " disabled-for-preview";
	}
	preview.innerHTML = editor.options.previewRender(editor.value(), preview);

	// Turn off side by side if needed
	var sidebyside = cm.getWrapperElement().nextSibling;
	if(/editor-preview-active-side/.test(sidebyside.className))
	toggleSideBySide(editor);
	}

	function _replaceSelection(cm, active, startEnd) {
	if(/editor-preview-active/.test(cm.getWrapperElement().lastChild.className))
	return;

	var text;
	var start = startEnd[0];
	var end = startEnd[1];
	var startPoint = cm.getCursor("start");
	var endPoint = cm.getCursor("end");
	if(active) {
	text = cm.getLine(startPoint.line);
	start = text.slice(0, startPoint.ch);
	end = text.slice(startPoint.ch);
	cm.replaceRange(start + end, {
	line: startPoint.line,
	ch: 0
	});
	} else {
	text = cm.getSelection();
	cm.replaceSelection(start + text + end);

	startPoint.ch += start.length;
	if(startPoint !== endPoint) {
	endPoint.ch += start.length;
	}
	}
	cm.setSelection(startPoint, endPoint);
	cm.focus();
	}


	function _toggleHeading(cm, direction, size) {
	if(/editor-preview-active/.test(cm.getWrapperElement().lastChild.className))
	return;

	var startPoint = cm.getCursor("start");
	var endPoint = cm.getCursor("end");
	for(var i = startPoint.line; i <= endPoint.line; i++) {
	(function(i) {
	var text = cm.getLine(i);
	var currHeadingLevel = text.search(/[^#]/);

	if(direction !== undefined) {
	if(currHeadingLevel <= 0) {
	if(direction == "bigger") {
	text = "###### " + text;
	} else {
	text = "# " + text;
	}
	} else if(currHeadingLevel == 6 && direction == "smaller") {
	text = text.substr(7);
	} else if(currHeadingLevel == 1 && direction == "bigger") {
	text = text.substr(2);
	} else {
	if(direction == "bigger") {
	text = text.substr(1);
	} else {
	text = "#" + text;
	}
	}
	} else {
	if(size == 1) {
	if(currHeadingLevel <= 0) {
	text = "# " + text;
	} else if(currHeadingLevel == size) {
	text = text.substr(currHeadingLevel + 1);
	} else {
	text = "# " + text.substr(currHeadingLevel + 1);
	}
	} else if(size == 2) {
	if(currHeadingLevel <= 0) {
	text = "## " + text;
	} else if(currHeadingLevel == size) {
	text = text.substr(currHeadingLevel + 1);
	} else {
	text = "## " + text.substr(currHeadingLevel + 1);
	}
	} else {
	if(currHeadingLevel <= 0) {
	text = "### " + text;
	} else if(currHeadingLevel == size) {
	text = text.substr(currHeadingLevel + 1);
	} else {
	text = "### " + text.substr(currHeadingLevel + 1);
	}
	}
	}

	cm.replaceRange(text, {
	line: i,
	ch: 0
	}, {
	line: i,
	ch: 99999999999999
	});
	})(i);
	}
	cm.focus();
	}


	function _toggleLine(cm, name) {
	if(/editor-preview-active/.test(cm.getWrapperElement().lastChild.className))
	return;

	var stat = getState(cm);
	var startPoint = cm.getCursor("start");
	var endPoint = cm.getCursor("end");
	var repl = {
	"quote": /^(\s*)\>\s+/,
	"unordered-list": /^(\s)(\\|\-\|\+)\s+/,
	"ordered-list": /^(\s*)\d+\.\s+/
	};
	var map = {
	"quote": "> ",
	"unordered-list": "* ",
	"ordered-list": "1. "
	};
	for(var i = startPoint.line; i <= endPoint.line; i++) {
	(function(i) {
	var text = cm.getLine(i);
	if(stat[name]) {
	text = text.replace(repl[name], "$1");
	} else {
	text = map[name] + text;
	}
	cm.replaceRange(text, {
	line: i,
	ch: 0
	}, {
	line: i,
	ch: 99999999999999
	});
	})(i);
	}
	cm.focus();
	}

	function _toggleBlock(editor, type, start_chars, end_chars) {
	if(/editor-preview-active/.test(editor.codemirror.getWrapperElement().lastChild.className))
	return;

	end_chars = (typeof end_chars === "undefined") ? start_chars : end_chars;
	var cm = editor.codemirror;
	var stat = getState(cm);

	var text;
	var start = start_chars;
	var end = end_chars;

	var startPoint = cm.getCursor("start");
	var endPoint = cm.getCursor("end");

	if(stat[type]) {
	text = cm.getLine(startPoint.line);
	start = text.slice(0, startPoint.ch);
	end = text.slice(startPoint.ch);
	if(type == "bold") {
	start = start.replace(/(\\\|__)(?![\s\S](\\*\|__))/, "");
	end = end.replace(/(\\\|__)/, "");
	} else if(type == "italic") {
	start = start.replace(/(\\|_)(?![\s\S](\*\|_))/, "");
	end = end.replace(/(\*\|_)/, "");
	} else if(type == "strikethrough") {
	start = start.replace(/(\\\|~~)(?![\s\S](\\*\|~~))/, "");
	end = end.replace(/(\\\|~~)/, "");
	}
	cm.replaceRange(start + end, {
	line: startPoint.line,
	ch: 0
	}, {
	line: startPoint.line,
	ch: 99999999999999
	});

	if(type == "bold" \|\| type == "strikethrough") {
	startPoint.ch -= 2;
	if(startPoint !== endPoint) {
	endPoint.ch -= 2;
	}
	} else if(type == "italic") {
	startPoint.ch -= 1;
	if(startPoint !== endPoint) {
	endPoint.ch -= 1;
	}
	}
	} else {
	text = cm.getSelection();
	if(type == "bold") {
	text = text.split("**").join("");
	text = text.split("__").join("");
	} else if(type == "italic") {
	text = text.split("*").join("");
	text = text.split("_").join("");
	} else if(type == "strikethrough") {
	text = text.split("~~").join("");
	}
	cm.replaceSelection(start + text + end);

	startPoint.ch += start_chars.length;
	endPoint.ch = startPoint.ch + text.length;
	}

	cm.setSelection(startPoint, endPoint);
	cm.focus();
	}

	// Merge the properties of one object into another.
	function _mergeProperties(target, source) {
	for(var property in source) {
	if(source.hasOwnProperty(property)) {
	if(source[property] instanceof Array) {
	target[property] = source[property].concat(target[property] instanceof Array ? target[property] : []);
	} else if(
	source[property] !== null &&
	typeof source[property] === "object" &&
	source[property].constructor === Object
	) {
	target[property] = _mergeProperties(target[property] \|\| {}, source[property]);
	} else {
	target[property] = source[property];
	}
	}
	}

	return target;
	}

	// Merge an arbitrary number of objects into one.
	function extend(target) {
	for(var i = 1; i < arguments.length; i++) {
	target = _mergeProperties(target, arguments[i]);
	}

	return target;
	}

	/* The right word count in respect for CJK. */
	function wordCount(data) {
	var pattern = /[a-zA-Z0-9_\u0392-\u03c9]+\|[\u4E00-\u9FFF\u3400-\u4dbf\uf900-\ufaff\u3040-\u309f\uac00-\ud7af]+/g;
	var m = data.match(pattern);
	var count = 0;
	if(m === null) return count;
	for(var i = 0; i < m.length; i++) {
	if(m[i].charCodeAt(0) >= 0x4E00) {
	count += m[i].length;
	} else {
	count += 1;
	}
	}
	return count;
	}

	var toolbarBuiltInButtons = {
	"bold": {
	name: "bold",
	action: toggleBold,
	className: "fa fa-bold",
	title: "Bold (Ctrl+B)",
	default: true
	},
	"italic": {
	name: "italic",
	action: toggleItalic,
	className: "fa fa-italic",
	title: "Italic (Ctrl+I)",
	default: true
	},
	"strikethrough": {
	name: "strikethrough",
	action: toggleStrikethrough,
	className: "fa fa-strikethrough",
	title: "Strikethrough"
	},
	"heading": {
	name: "heading",
	action: toggleHeadingSmaller,
	className: "fa fa-header",
	title: "Heading (Ctrl+H)",
	default: true
	},
	"heading-smaller": {
	name: "heading-smaller",
	action: toggleHeadingSmaller,
	className: "fa fa-header fa-header-x fa-header-smaller",
	title: "Smaller Heading (Ctrl+H)"
	},
	"heading-bigger": {
	name: "heading-bigger",
	action: toggleHeadingBigger,
	className: "fa fa-header fa-header-x fa-header-bigger",
	title: "Bigger Heading (Shift+Ctrl+H)"
	},
	"heading-1": {
	name: "heading-1",
	action: toggleHeading1,
	className: "fa fa-header fa-header-x fa-header-1",
	title: "Big Heading"
	},
	"heading-2": {
	name: "heading-2",
	action: toggleHeading2,
	className: "fa fa-header fa-header-x fa-header-2",
	title: "Medium Heading"
	},
	"heading-3": {
	name: "heading-3",
	action: toggleHeading3,
	className: "fa fa-header fa-header-x fa-header-3",
	title: "Small Heading"
	},
	"separator-1": {
	name: "separator-1"
	},
	"code": {
	name: "code",
	action: toggleCodeBlock,
	className: "fa fa-code",
	title: "Code (Ctrl+Alt+C)"
	},
	"quote": {
	name: "quote",
	action: toggleBlockquote,
	className: "fa fa-quote-left",
	title: "Quote (Ctrl+')",
	default: true
	},
	"unordered-list": {
	name: "unordered-list",
	action: toggleUnorderedList,
	className: "fa fa-list-ul",
	title: "Generic List (Ctrl+L)",
	default: true
	},
	"ordered-list": {
	name: "ordered-list",
	action: toggleOrderedList,
	className: "fa fa-list-ol",
	title: "Numbered List (Ctrl+Alt+L)",
	default: true
	},
	"separator-2": {
	name: "separator-2"
	},
	"link": {
	name: "link",
	action: drawLink,
	className: "fa fa-link",
	title: "Create Link (Ctrl+K)",
	default: true
	},
	"image": {
	name: "image",
	action: drawImage,
	className: "fa fa-picture-o",
	title: "Insert Image (Ctrl+Alt+I)",
	default: true
	},
	"table": {
	name: "table",
	action: drawTable,
	className: "fa fa-table",
	title: "Insert Table"
	},
	"horizontal-rule": {
	name: "horizontal-rule",
	action: drawHorizontalRule,
	className: "fa fa-minus",
	title: "Insert Horizontal Line"
	},
	"separator-3": {
	name: "separator-3"
	},
	"preview": {
	name: "preview",
	action: togglePreview,
	className: "fa fa-eye no-disable",
	title: "Toggle Preview (Ctrl+P)",
	default: true
	},
	"side-by-side": {
	name: "side-by-side",
	action: toggleSideBySide,
	className: "fa fa-columns no-disable no-mobile",
	title: "Toggle Side by Side (F9)",
	default: true
	},
	"fullscreen": {
	name: "fullscreen",
	action: toggleFullScreen,
	className: "fa fa-arrows-alt no-disable no-mobile",
	title: "Toggle Fullscreen (F11)",
	default: true
	},
	"guide": {
	name: "guide",
	action: "http://nextstepwebs.github.io/simplemde-markdown-editor/markdown-guide",
	className: "fa fa-question-circle",
	title: "Markdown Guide",
	default: true
	}
	};

	var insertTexts = {
	link: ["[", "](http://)"],
	image: ["![](http://", ")"],
	table: ["", "\n\n\| Column 1 \| Column 2 \| Column 3 \|\n\| -------- \| -------- \| -------- \|\n\| Text \| Text \| Text \|\n\n"],
	horizontalRule: ["", "\n\n-----\n\n"]
	};

	var blockStyles = {
	"bold": "**",
	"italic": "*"
	};

	/**
	* Interface of SimpleMDE.
	*/
	function SimpleMDE(options) {
	// Handle options parameter
	options = options \|\| {};


	// Used later to refer to it"s parent
	options.parent = this;


	// Check if Font Awesome needs to be auto downloaded
	var autoDownloadFA = true;

	if(options.autoDownloadFontAwesome === false) {
	autoDownloadFA = false;
	}

	if(options.autoDownloadFontAwesome !== true) {
	var styleSheets = document.styleSheets;
	for(var i = 0; i < styleSheets.length; i++) {
	if(!styleSheets[i].href)
	continue;

	if(styleSheets[i].href.indexOf("//maxcdn.bootstrapcdn.com/font-awesome/") > -1) {
	autoDownloadFA = false;
	}
	}
	}

	if(autoDownloadFA) {
	var link = document.createElement("link");
	link.rel = "stylesheet";
	link.href = "https://maxcdn.bootstrapcdn.com/font-awesome/latest/css/font-awesome.min.css";
	document.getElementsByTagName("head")[0].appendChild(link);
	}


	// Find the textarea to use
	if(options.element) {
	this.element = options.element;
	} else if(options.element === null) {
	// This means that the element option was specified, but no element was found
	console.log("SimpleMDE: Error. No element was found.");
	return;
	}


	// Handle toolbar
	if(options.toolbar === undefined) {
	// Initialize
	options.toolbar = [];


	// Loop over the built in buttons, to get the preferred order
	for(var key in toolbarBuiltInButtons) {
	if(toolbarBuiltInButtons.hasOwnProperty(key)) {
	if(key.indexOf("separator-") != -1) {
	options.toolbar.push("\|");
	}

	if(toolbarBuiltInButtons[key].default === true \|\| (options.showIcons && options.showIcons.constructor === Array && options.showIcons.indexOf(key) != -1)) {
	options.toolbar.push(key);
	}
	}
	}
	}


	// Handle status bar
	if(!options.hasOwnProperty("status")) {
	options.status = ["autosave", "lines", "words", "cursor"];
	}


	// Add default preview rendering function
	if(!options.previewRender) {
	options.previewRender = function(plainText) {
	// Note: "this" refers to the options object
	return this.parent.markdown(plainText);
	};
	}


	// Set default options for parsing config
	options.parsingConfig = options.parsingConfig \|\| {};


	// Merging the insertTexts, with the given options
	options.insertTexts = extend({}, insertTexts, options.insertTexts \|\| {});


	// Merging the blockStyles, with the given options
	options.blockStyles = extend({}, blockStyles, options.blockStyles \|\| {});


	// Change unique_id to uniqueId for backwards compatibility
	if(options.autosave != undefined && options.autosave.unique_id != undefined && options.autosave.unique_id != "")
	options.autosave.uniqueId = options.autosave.unique_id;


	// Update this options
	this.options = options;


	// Auto render
	this.render();


	// The codemirror component is only available after rendering
	// so, the setter for the initialValue can only run after
	// the element has been rendered
	if(options.initialValue && (!this.options.autosave \|\| this.options.autosave.foundSavedValue !== true)) {
	this.value(options.initialValue);
	}
	}

	/**
	* Default markdown render.
	*/
	SimpleMDE.prototype.markdown = function(text) {
	if(marked) {
	// Initialize
	var markedOptions = {};


	// Update options
	if(this.options && this.options.renderingConfig && this.options.renderingConfig.singleLineBreaks !== false) {
	markedOptions.breaks = true;
	}

	if(this.options && this.options.renderingConfig && this.options.renderingConfig.codeSyntaxHighlighting === true && window.hljs) {
	markedOptions.highlight = function(code) {
	return window.hljs.highlightAuto(code).value;
	};
	}


	// Set options
	marked.setOptions(markedOptions);


	// Return
	return marked(text);
	}
	};

	/**
	* Render editor to the given element.
	*/
	SimpleMDE.prototype.render = function(el) {
	if(!el) {
	el = this.element \|\| document.getElementsByTagName("textarea")[0];
	}

	if(this._rendered && this._rendered === el) {
	// Already rendered.
	return;
	}

	this.element = el;
	var options = this.options;

	var self = this;
	var keyMaps = {};

	for(var key in shortcuts) {
	(function(key) {
	keyMaps[fixShortcut(key)] = function() {
	shortcuts[key](self);
	};
	})(key);
	}

	keyMaps["Enter"] = "newlineAndIndentContinueMarkdownList";
	keyMaps["Tab"] = "tabAndIndentMarkdownList";
	keyMaps["Shift-Tab"] = "shiftTabAndUnindentMarkdownList";
	keyMaps["F11"] = function() {
	toggleFullScreen(self);
	};
	keyMaps["F9"] = function() {
	toggleSideBySide(self);
	};
	keyMaps["Esc"] = function(cm) {
	if(cm.getOption("fullScreen")) toggleFullScreen(self);
	};

	document.addEventListener("keydown", function(e) {
	e = e \|\| window.event;

	if(e.keyCode == 27) {
	if(self.codemirror.getOption("fullScreen")) toggleFullScreen(self);
	}
	}, false);

	var mode, backdrop;
	if(options.spellChecker !== false) {
	mode = "spell-checker";
	backdrop = options.parsingConfig;
	backdrop.name = "gfm";
	backdrop.gitHubSpice = false;
	} else {
	mode = options.parsingConfig;
	mode.name = "gfm";
	mode.gitHubSpice = false;
	}

	this.codemirror = CodeMirror.fromTextArea(el, {
	mode: mode,
	backdrop: backdrop,
	theme: "paper",
	tabSize: (options.tabSize != undefined) ? options.tabSize : 2,
	indentUnit: (options.tabSize != undefined) ? options.tabSize : 2,
	indentWithTabs: (options.indentWithTabs === false) ? false : true,
	lineNumbers: false,
	autofocus: (options.autofocus === true) ? true : false,
	extraKeys: keyMaps,
	lineWrapping: (options.lineWrapping === false) ? false : true,
	allowDropFileTypes: ["text/plain"]
	});

	if(options.toolbar !== false) {
	this.createToolbar();
	}
	if(options.status !== false) {
	this.createStatusbar();
	}
	if(options.autosave != undefined && options.autosave.enabled === true) {
	this.autosave();
	}

	this.createSideBySide();

	this._rendered = this.element;
	};

	SimpleMDE.prototype.autosave = function() {
	if(localStorage) {
	var simplemde = this;

	if(this.options.autosave.uniqueId == undefined \|\| this.options.autosave.uniqueId == "") {
	console.log("SimpleMDE: You must set a uniqueId to use the autosave feature");
	return;
	}

	if(simplemde.element.form != null && simplemde.element.form != undefined) {
	simplemde.element.form.addEventListener("submit", function() {
	localStorage.removeItem("smde_" + simplemde.options.autosave.uniqueId);
	});
	}

	if(this.options.autosave.loaded !== true) {
	if(typeof localStorage.getItem("smde_" + this.options.autosave.uniqueId) == "string" && localStorage.getItem("smde_" + this.options.autosave.uniqueId) != "") {
	this.codemirror.setValue(localStorage.getItem("smde_" + this.options.autosave.uniqueId));
	this.options.autosave.foundSavedValue = true;
	}

	this.options.autosave.loaded = true;
	}

	localStorage.setItem("smde_" + this.options.autosave.uniqueId, simplemde.value());

	var el = document.getElementById("autosaved");
	if(el != null && el != undefined && el != "") {
	var d = new Date();
	var hh = d.getHours();
	var m = d.getMinutes();
	var dd = "am";
	var h = hh;
	if(h >= 12) {
	h = hh - 12;
	dd = "pm";
	}
	if(h == 0) {
	h = 12;
	}
	m = m < 10 ? "0" + m : m;

	el.innerHTML = "Autosaved: " + h + ":" + m + " " + dd;
	}

	setTimeout(function() {
	simplemde.autosave();
	}, this.options.autosave.delay \|\| 10000);
	} else {
	console.log("SimpleMDE: localStorage not available, cannot autosave");
	}
	};

	SimpleMDE.prototype.clearAutosavedValue = function() {
	if(localStorage) {
	if(this.options.autosave.uniqueId == undefined \|\| this.options.autosave.uniqueId == "") {
	console.log("SimpleMDE: You must set a uniqueId to use the autosave feature");
	return;
	}

	localStorage.removeItem("smde_" + this.options.autosave.uniqueId);
	} else {
	console.log("SimpleMDE: localStorage not available, cannot autosave");
	}
	};

	SimpleMDE.prototype.createSideBySide = function() {
	var cm = this.codemirror;
	var wrapper = cm.getWrapperElement();
	var preview = wrapper.nextSibling;

	if(!preview \|\| !/editor-preview-side/.test(preview.className)) {
	preview = document.createElement("div");
	preview.className = "editor-preview-side";
	wrapper.parentNode.insertBefore(preview, wrapper.nextSibling);
	}

	// Syncs scroll editor -> preview
	var cScroll = false;
	var pScroll = false;
	cm.on("scroll", function(v) {
	if(cScroll) {
	cScroll = false;
	return;
	}
	pScroll = true;
	var height = v.getScrollInfo().height - v.getScrollInfo().clientHeight;
	var ratio = parseFloat(v.getScrollInfo().top) / height;
	var move = (preview.scrollHeight - preview.clientHeight) * ratio;
	preview.scrollTop = move;
	});

	// Syncs scroll preview -> editor
	preview.onscroll = function() {
	if(pScroll) {
	pScroll = false;
	return;
	}
	cScroll = true;
	var height = preview.scrollHeight - preview.clientHeight;
	var ratio = parseFloat(preview.scrollTop) / height;
	var move = (cm.getScrollInfo().height - cm.getScrollInfo().clientHeight) * ratio;
	cm.scrollTo(0, move);
	};
	return true;
	};

	SimpleMDE.prototype.createToolbar = function(items) {
	items = items \|\| this.options.toolbar;

	if(!items \|\| items.length === 0) {
	return;
	}
	var i;
	for(i = 0; i < items.length; i++) {
	if(toolbarBuiltInButtons[items[i]] != undefined) {
	items[i] = toolbarBuiltInButtons[items[i]];
	}
	}

	var bar = document.createElement("div");
	bar.className = "editor-toolbar";

	var self = this;

	var toolbar_data = {};
	self.toolbar = items;

	for(i = 0; i < items.length; i++) {
	if(items[i].name == "guide" && self.options.toolbarGuideIcon === false)
	continue;

	if(self.options.hideIcons && self.options.hideIcons.indexOf(items[i].name) != -1)
	continue;

	// Fullscreen does not work well on mobile devices (even tablets)
	// In the future, hopefully this can be resolved
	if((items[i].name == "fullscreen" \|\| items[i].name == "side-by-side") && isMobile())
	continue;

	(function(item) {
	var el;
	if(item === "\|") {
	el = createSep();
	} else {
	el = createIcon(item, self.options.toolbarTips);
	}

	// bind events, special for info
	if(item.action) {
	if(typeof item.action === "function") {
	el.onclick = function() {
	item.action(self);
	};
	} else if(typeof item.action === "string") {
	el.href = item.action;
	el.target = "_blank";
	}
	}
	toolbar_data[item.name \|\| item] = el;
	bar.appendChild(el);
	})(items[i]);
	}

	self.toolbarElements = toolbar_data;

	var cm = this.codemirror;
	cm.on("cursorActivity", function() {
	var stat = getState(cm);

	for(var key in toolbar_data) {
	(function(key) {
	var el = toolbar_data[key];
	if(stat[key]) {
	el.className += " active";
	} else if(key != "fullscreen" && key != "side-by-side") {
	el.className = el.className.replace(/\sactive\s/g, "");
	}
	})(key);
	}
	});

	var cmWrapper = cm.getWrapperElement();
	cmWrapper.parentNode.insertBefore(bar, cmWrapper);
	return bar;
	};

	SimpleMDE.prototype.createStatusbar = function(status) {
	status = status \|\| this.options.status;
	var options = this.options;

	if(!status \|\| status.length === 0) return;

	var bar = document.createElement("div");
	bar.className = "editor-statusbar";

	var pos, cm = this.codemirror;
	for(var i = 0; i < status.length; i++) {
	(function(name) {
	var el = document.createElement("span");
	el.className = name;
	if(name === "words") {
	el.innerHTML = "0";
	cm.on("update", function() {
	el.innerHTML = wordCount(cm.getValue());
	});
	} else if(name === "lines") {
	el.innerHTML = "0";
	cm.on("update", function() {
	el.innerHTML = cm.lineCount();
	});
	} else if(name === "cursor") {
	el.innerHTML = "0:0";
	cm.on("cursorActivity", function() {
	pos = cm.getCursor();
	el.innerHTML = pos.line + ":" + pos.ch;
	});
	} else if(name === "autosave") {
	if(options.autosave != undefined && options.autosave.enabled === true) {
	el.setAttribute("id", "autosaved");
	}
	}
	bar.appendChild(el);
	})(status[i]);
	}

	var cmWrapper = this.codemirror.getWrapperElement();
	cmWrapper.parentNode.insertBefore(bar, cmWrapper.nextSibling);
	return bar;
	};

	/**
	* Get or set the text content.
	*/
	SimpleMDE.prototype.value = function(val) {
	if(val === undefined) {
	return this.codemirror.getValue();
	} else {
	this.codemirror.getDoc().setValue(val);
	return this;
	}
	};


	/**
	* Bind static methods for exports.
	*/
	SimpleMDE.toggleBold = toggleBold;
	SimpleMDE.toggleItalic = toggleItalic;
	SimpleMDE.toggleStrikethrough = toggleStrikethrough;
	SimpleMDE.toggleBlockquote = toggleBlockquote;
	SimpleMDE.toggleHeadingSmaller = toggleHeadingSmaller;
	SimpleMDE.toggleHeadingBigger = toggleHeadingBigger;
	SimpleMDE.toggleHeading1 = toggleHeading1;
	SimpleMDE.toggleHeading2 = toggleHeading2;
	SimpleMDE.toggleHeading3 = toggleHeading3;
	SimpleMDE.toggleCodeBlock = toggleCodeBlock;
	SimpleMDE.toggleUnorderedList = toggleUnorderedList;
	SimpleMDE.toggleOrderedList = toggleOrderedList;
	SimpleMDE.drawLink = drawLink;
	SimpleMDE.drawImage = drawImage;
	SimpleMDE.drawTable = drawTable;
	SimpleMDE.drawHorizontalRule = drawHorizontalRule;
	SimpleMDE.undo = undo;
	SimpleMDE.redo = redo;
	SimpleMDE.togglePreview = togglePreview;
	SimpleMDE.toggleSideBySide = toggleSideBySide;
	SimpleMDE.toggleFullScreen = toggleFullScreen;

	/**
	* Bind instance methods for exports.
	*/
	SimpleMDE.prototype.toggleBold = function() {
	toggleBold(this);
	};
	SimpleMDE.prototype.toggleItalic = function() {
	toggleItalic(this);
	};
	SimpleMDE.prototype.toggleStrikethrough = function() {
	toggleStrikethrough(this);
	};
	SimpleMDE.prototype.toggleBlockquote = function() {
	toggleBlockquote(this);
	};
	SimpleMDE.prototype.toggleHeadingSmaller = function() {
	toggleHeadingSmaller(this);
	};
	SimpleMDE.prototype.toggleHeadingBigger = function() {
	toggleHeadingBigger(this);
	};
	SimpleMDE.prototype.toggleHeading1 = function() {
	toggleHeading1(this);
	};
	SimpleMDE.prototype.toggleHeading2 = function() {
	toggleHeading2(this);
	};
	SimpleMDE.prototype.toggleHeading3 = function() {
	toggleHeading3(this);
	};
	SimpleMDE.prototype.toggleCodeBlock = function() {
	toggleCodeBlock(this);
	};
	SimpleMDE.prototype.toggleUnorderedList = function() {
	toggleUnorderedList(this);
	};
	SimpleMDE.prototype.toggleOrderedList = function() {
	toggleOrderedList(this);
	};
	SimpleMDE.prototype.drawLink = function() {
	drawLink(this);
	};
	SimpleMDE.prototype.drawImage = function() {
	drawImage(this);
	};
	SimpleMDE.prototype.drawTable = function() {
	drawTable(this);
	};
	SimpleMDE.prototype.drawHorizontalRule = function() {
	drawHorizontalRule(this);
	};
	SimpleMDE.prototype.undo = function() {
	undo(this);
	};
	SimpleMDE.prototype.redo = function() {
	redo(this);
	};
	SimpleMDE.prototype.togglePreview = function() {
	togglePreview(this);
	};
	SimpleMDE.prototype.toggleSideBySide = function() {
	toggleSideBySide(this);
	};
	SimpleMDE.prototype.toggleFullScreen = function() {
	toggleFullScreen(this);
	};

	SimpleMDE.prototype.isPreviewActive = function() {
	var cm = this.codemirror;
	var wrapper = cm.getWrapperElement();
	var preview = wrapper.lastChild;

	return /editor-preview-active/.test(preview.className);
	};

	SimpleMDE.prototype.isSideBySideActive = function() {
	var cm = this.codemirror;
	var wrapper = cm.getWrapperElement();
	var preview = wrapper.nextSibling;

	return /editor-preview-active-side/.test(preview.className);
	};

	SimpleMDE.prototype.isFullscreenActive = function() {
	var cm = this.codemirror;

	return cm.getOption("fullScreen");
	};

	module.exports = SimpleMDE;

	},{"./codemirror/tablist":12,"codemirror":6,"codemirror/addon/display/fullscreen.js":3,"codemirror/addon/edit/continuelist.js":4,"codemirror/addon/mode/overlay.js":5,"codemirror/mode/gfm/gfm.js":7,"codemirror/mode/markdown/markdown.js":8,"codemirror/mode/xml/xml.js":10,"marked":11,"spell-checker":1}]},{},[13])(13)
	});
	//# 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e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","\n; Typo = global.Typo = require(\"D:\\\\My Web Sites\\\\simplemde-markdown-editor\\\\node_modules\\\\codemirror-spell-checker\\\\src\\\\js\\\\typo.js\");\nCodeMirror = global.CodeMirror = require(\"codemirror\");\n; var __browserify_shim_require__=require;(function browserifyShim(module, define, require) {\n// Initialize data globally to reduce memory consumption\r\nvar num_loaded = 0;\r\nvar aff_loading = false;\r\nvar dic_loading = false;\r\nvar aff_data = \"\";\r\nvar dic_data = \"\";\r\nvar typo;\r\n\r\n\r\nCodeMirror.defineMode(\"spell-checker\", function(config, parserConfig) {\r\n\t// Load AFF/DIC data\r\n\tif(!aff_loading){\r\n\t\taff_loading = true;\r\n\t\tvar xhr_aff = new XMLHttpRequest();\r\n\t\txhr_aff.open(\"GET\", \"https://cdn.jsdelivr.net/codemirror.spell-checker/latest/en_US.aff\", true);\r\n\t\txhr_aff.onload = function (e) {\r\n\t\t\tif (xhr_aff.readyState === 4 && xhr_aff.status === 200) {\r\n\t\t\t\taff_data = xhr_aff.responseText;\r\n\t\t\t\tnum_loaded++;\r\n\t\t\t\t\r\n\t\t\t\tif(num_loaded == 2){\r\n\t\t\t\t\ttypo = new Typo(\"en_US\", aff_data, dic_data, {\r\n\t\t\t\t\t\tplatform: 'any'\r\n\t\t\t\t\t});\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t};\r\n\t\txhr_aff.send(null);\r\n\t}\r\n\t\r\n\tif(!dic_loading){\r\n\t\tdic_loading = true;\r\n\t\tvar xhr_dic = new XMLHttpRequest();\r\n\t\txhr_dic.open(\"GET\", \"https://cdn.jsdelivr.net/codemirror.spell-checker/latest/en_US.dic\", true);\r\n\t\txhr_dic.onload = function (e) {\r\n\t\t\tif (xhr_dic.readyState === 4 && xhr_dic.status === 200) {\r\n\t\t\t\tdic_data = xhr_dic.responseText;\r\n\t\t\t\tnum_loaded++;\r\n\t\t\t\t\r\n\t\t\t\tif(num_loaded == 2){\r\n\t\t\t\t\ttypo = new Typo(\"en_US\", aff_data, dic_data, {\r\n\t\t\t\t\t\tplatform: 'any'\r\n\t\t\t\t\t});\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t};\r\n\t\txhr_dic.send(null);\r\n\t}\r\n\r\n\t\r\n\t\r\n\t// Define what separates a word\r\n\tvar rx_word = \"!\\\"#$%&()*+,-./:;<=>?@[\\\\]^_`{|}~ \";\r\n\t\r\n\t\r\n\t// Create the overlay and such\r\n\tvar overlay = {\r\n\t\ttoken: function(stream, state) {\r\n\t\t\tvar ch = stream.peek();\r\n\t\t\tvar word = \"\";\r\n\r\n\t\t\tif(rx_word.includes(ch)) {\r\n\t\t\t\tstream.next();\r\n\t\t\t\treturn null;\r\n\t\t\t}\r\n\r\n\t\t\twhile((ch = stream.peek()) != null && !rx_word.includes(ch)) {\r\n\t\t\t\tword += ch;\r\n\t\t\t\tstream.next();\r\n\t\t\t}\r\n\r\n\t\t\tif(typo && !typo.check(word))\r\n\t\t\t\treturn \"spell-error\"; // CSS class: cm-spell-error\r\n\r\n\t\t\treturn null;\r\n\t\t}\r\n\t};\r\n\r\n\tvar mode = CodeMirror.getMode(\r\n\t\tconfig, config.backdrop || \"text/plain\"\r\n\t);\r\n\r\n\treturn CodeMirror.overlayMode(mode, overlay, true);\r\n});\r\n\r\n\r\n// Because some browsers don't support this functionality yet\r\nif(!String.prototype.includes) {\r\n\tString.prototype.includes = function() {'use strict';\r\n\t\treturn String.prototype.indexOf.apply(this, arguments) !== -1;\r\n\t};\r\n}\n}).call(global, module, undefined, undefined);\n","; var __browserify_shim_require__=require;(function browserifyShim(module, exports, require, define, browserify_shim__define__module__export__) {\n'use strict';\r\n\r\n/**\r\n * Typo is a JavaScript implementation of a spellchecker using hunspell-style\r\n * dictionaries.\r\n */\r\n\r\n/**\r\n * Typo constructor.\r\n *\r\n * @param {String} [dictionary] The locale code of the dictionary being used. e.g.,\r\n *                              \"en_US\". This is only used to auto-load dictionaries.\r\n * @param {String} [affData] The data from the dictionary's .aff file. If omitted\r\n *                           and the first argument is supplied, in \"chrome\" platform,\r\n *                           the .aff file will be loaded automatically from\r\n *                           lib/typo/dictionaries/[dictionary]/[dictionary].aff\r\n *                           In other platform, it will be loaded from\r\n *                           [setting.path]/dictionaries/[dictionary]/[dictionary].aff\r\n * @param {String} [wordsData] The data from the dictionary's .dic file. If omitted,\r\n *                           and the first argument is supplied, in \"chrome\" platform,\r\n *                           the .dic file will be loaded automatically from\r\n *                           lib/typo/dictionaries/[dictionary]/[dictionary].dic\r\n *                           In other platform, it will be loaded from\r\n *                           [setting.path]/dictionaries/[dictionary]/[dictionary].dic\r\n * @param {Object} [settings] Constructor settings. Available properties are:\r\n *                            {String} [platform]: \"chrome\" for Chrome Extension or other\r\n *                              value for the usual web.\r\n *                            {String} [dictionaryPath]: path to load dictionary from in non-chrome\r\n *                              environment.\r\n *                            {Object} [flags]: flag information.\r\n *\r\n *\r\n * @returns {Typo} A Typo object.\r\n */\r\n\r\nvar Typo = function (dictionary, affData, wordsData, settings) {\r\n\tsettings = settings || {};\r\n\t\r\n\t/** Determines the method used for auto-loading .aff and .dic files. **/\r\n\tthis.platform = settings.platform || \"chrome\";\r\n\t\r\n\tthis.dictionary = null;\r\n\t\r\n\tthis.rules = {};\r\n\tthis.dictionaryTable = {};\r\n\t\r\n\tthis.compoundRules = [];\r\n\tthis.compoundRuleCodes = {};\r\n\t\r\n\tthis.replacementTable = [];\r\n\t\r\n\tthis.flags = settings.flags || {};\r\n\t\r\n\tif (dictionary) {\r\n\t\tthis.dictionary = dictionary;\r\n\t\t\r\n\t\tif (this.platform == \"chrome\") {\r\n\t\t\tif (!affData) affData = this._readFile(chrome.extension.getURL(\"lib/typo/dictionaries/\" + dictionary + \"/\" + dictionary + \".aff\"));\r\n\t\t\tif (!wordsData) wordsData = this._readFile(chrome.extension.getURL(\"lib/typo/dictionaries/\" + dictionary + \"/\" + dictionary + \".dic\"));\r\n\t\t} else {\r\n\t\t\tvar path = settings.dictionaryPath || '';\r\n\t\t\t\r\n\t\t\tif (!affData) affData = this._readFile(path + \"/\" + dictionary + \"/\" + dictionary + \".aff\");\r\n\t\t\tif (!wordsData) wordsData = this._readFile(path + \"/\" + dictionary + \"/\" + dictionary + \".dic\");\r\n\t\t}\r\n\t\t\r\n\t\tthis.rules = this._parseAFF(affData);\r\n\t\t\r\n\t\t// Save the rule codes that are used in compound rules.\r\n\t\tthis.compoundRuleCodes = {};\r\n\t\t\r\n\t\tfor (var i = 0, _len = this.compoundRules.length; i < _len; i++) {\r\n\t\t\tvar rule = this.compoundRules[i];\r\n\t\t\t\r\n\t\t\tfor (var j = 0, _jlen = rule.length; j < _jlen; j++) {\r\n\t\t\t\tthis.compoundRuleCodes[rule[j]] = [];\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\t// If we add this ONLYINCOMPOUND flag to this.compoundRuleCodes, then _parseDIC\r\n\t\t// will do the work of saving the list of words that are compound-only.\r\n\t\tif (\"ONLYINCOMPOUND\" in this.flags) {\r\n\t\t\tthis.compoundRuleCodes[this.flags.ONLYINCOMPOUND] = [];\r\n\t\t}\r\n\t\t\r\n\t\tthis.dictionaryTable = this._parseDIC(wordsData);\r\n\t\t\r\n\t\t// Get rid of any codes from the compound rule codes that are never used\r\n\t\t// (or that were special regex characters).  Not especially necessary...\r\n\t\tfor (var i in this.compoundRuleCodes) {\r\n\t\t\tif (this.compoundRuleCodes[i].length == 0) {\r\n\t\t\t\tdelete this.compoundRuleCodes[i];\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\t// Build the full regular expressions for each compound rule.\r\n\t\t// I have a feeling (but no confirmation yet) that this method of\r\n\t\t// testing for compound words is probably slow.\r\n\t\tfor (var i = 0, _len = this.compoundRules.length; i < _len; i++) {\r\n\t\t\tvar ruleText = this.compoundRules[i];\r\n\t\t\t\r\n\t\t\tvar expressionText = \"\";\r\n\t\t\t\r\n\t\t\tfor (var j = 0, _jlen = ruleText.length; j < _jlen; j++) {\r\n\t\t\t\tvar character = ruleText[j];\r\n\t\t\t\t\r\n\t\t\t\tif (character in this.compoundRuleCodes) {\r\n\t\t\t\t\texpressionText += \"(\" + this.compoundRuleCodes[character].join(\"|\") + \")\";\r\n\t\t\t\t}\r\n\t\t\t\telse {\r\n\t\t\t\t\texpressionText += character;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\tthis.compoundRules[i] = new RegExp(expressionText, \"i\");\r\n\t\t}\r\n\t}\r\n\t\r\n\treturn this;\r\n};\r\n\r\nTypo.prototype = {\r\n\t/**\r\n\t * Loads a Typo instance from a hash of all of the Typo properties.\r\n\t *\r\n\t * @param object obj A hash of Typo properties, probably gotten from a JSON.parse(JSON.stringify(typo_instance)).\r\n\t */\r\n\t\r\n\tload : function (obj) {\r\n\t\tfor (var i in obj) {\r\n\t\t\tthis[i] = obj[i];\r\n\t\t}\r\n\t\t\r\n\t\treturn this;\r\n\t},\r\n\t\r\n\t/**\r\n\t * Read the contents of a file.\r\n\t *\r\n\t * @param {String} path The path (relative) to the file.\r\n\t * @param {String} [charset=\"ISO8859-1\"] The expected charset of the file\r\n\t * @returns string The file data.\r\n\t */\r\n\t\r\n\t_readFile : function (path, charset) {\r\n\t\tif (!charset) charset = \"ISO8859-1\";\r\n\t\t\r\n\t\tvar req = new XMLHttpRequest();\r\n\t\treq.open(\"GET\", path, false);\r\n\t\t\r\n\t\tif (req.overrideMimeType)\r\n\t\t\treq.overrideMimeType(\"text/plain; charset=\" + charset);\r\n\t\t\r\n\t\treq.send(null);\r\n\t\t\r\n\t\treturn req.responseText;\r\n\t},\r\n\t\r\n\t/**\r\n\t * Parse the rules out from a .aff file.\r\n\t *\r\n\t * @param {String} data The contents of the affix file.\r\n\t * @returns object The rules from the file.\r\n\t */\r\n\t\r\n\t_parseAFF : function (data) {\r\n\t\tvar rules = {};\r\n\t\t\r\n\t\t// Remove comment lines\r\n\t\tdata = this._removeAffixComments(data);\r\n\t\t\r\n\t\tvar lines = data.split(\"\\n\");\r\n\t\t\r\n\t\tfor (var i = 0, _len = lines.length; i < _len; i++) {\r\n\t\t\tvar line = lines[i];\r\n\t\t\t\r\n\t\t\tvar definitionParts = line.split(/\\s+/);\r\n\t\t\t\r\n\t\t\tvar ruleType = definitionParts[0];\r\n\t\t\t\r\n\t\t\tif (ruleType == \"PFX\" || ruleType == \"SFX\") {\r\n\t\t\t\tvar ruleCode = definitionParts[1];\r\n\t\t\t\tvar combineable = definitionParts[2];\r\n\t\t\t\tvar numEntries = parseInt(definitionParts[3], 10);\r\n\t\t\t\t\r\n\t\t\t\tvar entries = [];\r\n\t\t\t\t\r\n\t\t\t\tfor (var j = i + 1, _jlen = i + 1 + numEntries; j < _jlen; j++) {\r\n\t\t\t\t\tvar line = lines[j];\r\n\t\t\t\t\t\r\n\t\t\t\t\tvar lineParts = line.split(/\\s+/);\r\n\t\t\t\t\tvar charactersToRemove = lineParts[2];\r\n\t\t\t\t\t\r\n\t\t\t\t\tvar additionParts = lineParts[3].split(\"/\");\r\n\t\t\t\t\t\r\n\t\t\t\t\tvar charactersToAdd = additionParts[0];\r\n\t\t\t\t\tif (charactersToAdd === \"0\") charactersToAdd = \"\";\r\n\t\t\t\t\t\r\n\t\t\t\t\tvar continuationClasses = this.parseRuleCodes(additionParts[1]);\r\n\t\t\t\t\t\r\n\t\t\t\t\tvar regexToMatch = lineParts[4];\r\n\t\t\t\t\t\r\n\t\t\t\t\tvar entry = {};\r\n\t\t\t\t\tentry.add = charactersToAdd;\r\n\t\t\t\t\t\r\n\t\t\t\t\tif (continuationClasses.length > 0) entry.continuationClasses = continuationClasses;\r\n\t\t\t\t\t\r\n\t\t\t\t\tif (regexToMatch !== \".\") {\r\n\t\t\t\t\t\tif (ruleType === \"SFX\") {\r\n\t\t\t\t\t\t\tentry.match = new RegExp(regexToMatch + \"$\");\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\telse {\r\n\t\t\t\t\t\t\tentry.match = new RegExp(\"^\" + regexToMatch);\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t}\r\n\t\t\t\t\t\r\n\t\t\t\t\tif (charactersToRemove != \"0\") {\r\n\t\t\t\t\t\tif (ruleType === \"SFX\") {\r\n\t\t\t\t\t\t\tentry.remove = new RegExp(charactersToRemove  + \"$\");\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\telse {\r\n\t\t\t\t\t\t\tentry.remove = charactersToRemove;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t}\r\n\t\t\t\t\t\r\n\t\t\t\t\tentries.push(entry);\r\n\t\t\t\t}\r\n\t\t\t\t\r\n\t\t\t\trules[ruleCode] = { \"type\" : ruleType, \"combineable\" : (combineable == \"Y\"), \"entries\" : entries };\r\n\t\t\t\t\r\n\t\t\t\ti += numEntries;\r\n\t\t\t}\r\n\t\t\telse if (ruleType === \"COMPOUNDRULE\") {\r\n\t\t\t\tvar numEntries = parseInt(definitionParts[1], 10);\r\n\t\t\t\t\r\n\t\t\t\tfor (var j = i + 1, _jlen = i + 1 + numEntries; j < _jlen; j++) {\r\n\t\t\t\t\tvar line = lines[j];\r\n\t\t\t\t\t\r\n\t\t\t\t\tvar lineParts = line.split(/\\s+/);\r\n\t\t\t\t\tthis.compoundRules.push(lineParts[1]);\r\n\t\t\t\t}\r\n\t\t\t\t\r\n\t\t\t\ti += numEntries;\r\n\t\t\t}\r\n\t\t\telse if (ruleType === \"REP\") {\r\n\t\t\t\tvar lineParts = line.split(/\\s+/);\r\n\t\t\t\t\r\n\t\t\t\tif (lineParts.length === 3) {\r\n\t\t\t\t\tthis.replacementTable.push([ lineParts[1], lineParts[2] ]);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\telse {\r\n\t\t\t\t// ONLYINCOMPOUND\r\n\t\t\t\t// COMPOUNDMIN\r\n\t\t\t\t// FLAG\r\n\t\t\t\t// KEEPCASE\r\n\t\t\t\t// NEEDAFFIX\r\n\t\t\t\t\r\n\t\t\t\tthis.flags[ruleType] = definitionParts[1];\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\treturn rules;\r\n\t},\r\n\t\r\n\t/**\r\n\t * Removes comment lines and then cleans up blank lines and trailing whitespace.\r\n\t *\r\n\t * @param {String} data The data from an affix file.\r\n\t * @return {String} The cleaned-up data.\r\n\t */\r\n\t\r\n\t_removeAffixComments : function (data) {\r\n\t\t// Remove comments\r\n\t\tdata = data.replace(/#.*$/mg, \"\");\r\n\t\t\r\n\t\t// Trim each line\r\n\t\tdata = data.replace(/^\\s\\s*/m, '').replace(/\\s\\s*$/m, '');\r\n\t\t\r\n\t\t// Remove blank lines.\r\n\t\tdata = data.replace(/\\n{2,}/g, \"\\n\");\r\n\t\t\r\n\t\t// Trim the entire string\r\n\t\tdata = data.replace(/^\\s\\s*/, '').replace(/\\s\\s*$/, '');\r\n\t\t\r\n\t\treturn data;\r\n\t},\r\n\t\r\n\t/**\r\n\t * Parses the words out from the .dic file.\r\n\t *\r\n\t * @param {String} data The data from the dictionary file.\r\n\t * @returns object The lookup table containing all of the words and\r\n\t *                 word forms from the dictionary.\r\n\t */\r\n\t\r\n\t_parseDIC : function (data) {\r\n\t\tdata = this._removeDicComments(data);\r\n\t\t\r\n\t\tvar lines = data.split(\"\\n\");\r\n\t\tvar dictionaryTable = {};\r\n\t\t\r\n\t\tfunction addWord(word, rules) {\r\n\t\t\t// Some dictionaries will list the same word multiple times with different rule sets.\r\n\t\t\tif (!(word in dictionaryTable) || typeof dictionaryTable[word] != 'object') {\r\n\t\t\t\tdictionaryTable[word] = [];\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\tdictionaryTable[word].push(rules);\r\n\t\t}\r\n\t\t\r\n\t\t// The first line is the number of words in the dictionary.\r\n\t\tfor (var i = 1, _len = lines.length; i < _len; i++) {\r\n\t\t\tvar line = lines[i];\r\n\t\t\t\r\n\t\t\tvar parts = line.split(\"/\", 2);\r\n\t\t\t\r\n\t\t\tvar word = parts[0];\r\n\r\n\t\t\t// Now for each affix rule, generate that form of the word.\r\n\t\t\tif (parts.length > 1) {\r\n\t\t\t\tvar ruleCodesArray = this.parseRuleCodes(parts[1]);\r\n\t\t\t\t\r\n\t\t\t\t// Save the ruleCodes for compound word situations.\r\n\t\t\t\tif (!(\"NEEDAFFIX\" in this.flags) || ruleCodesArray.indexOf(this.flags.NEEDAFFIX) == -1) {\r\n\t\t\t\t\taddWord(word, ruleCodesArray);\r\n\t\t\t\t}\r\n\t\t\t\t\r\n\t\t\t\tfor (var j = 0, _jlen = ruleCodesArray.length; j < _jlen; j++) {\r\n\t\t\t\t\tvar code = ruleCodesArray[j];\r\n\t\t\t\t\t\r\n\t\t\t\t\tvar rule = this.rules[code];\r\n\t\t\t\t\t\r\n\t\t\t\t\tif (rule) {\r\n\t\t\t\t\t\tvar newWords = this._applyRule(word, rule);\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\tfor (var ii = 0, _iilen = newWords.length; ii < _iilen; ii++) {\r\n\t\t\t\t\t\t\tvar newWord = newWords[ii];\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\taddWord(newWord, []);\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\tif (rule.combineable) {\r\n\t\t\t\t\t\t\t\tfor (var k = j + 1; k < _jlen; k++) {\r\n\t\t\t\t\t\t\t\t\tvar combineCode = ruleCodesArray[k];\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\tvar combineRule = this.rules[combineCode];\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\tif (combineRule) {\r\n\t\t\t\t\t\t\t\t\t\tif (combineRule.combineable && (rule.type != combineRule.type)) {\r\n\t\t\t\t\t\t\t\t\t\t\tvar otherNewWords = this._applyRule(newWord, combineRule);\r\n\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\tfor (var iii = 0, _iiilen = otherNewWords.length; iii < _iiilen; iii++) {\r\n\t\t\t\t\t\t\t\t\t\t\t\tvar otherNewWord = otherNewWords[iii];\r\n\t\t\t\t\t\t\t\t\t\t\t\taddWord(otherNewWord, []);\r\n\t\t\t\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t\t}\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t}\r\n\t\t\t\t\t\r\n\t\t\t\t\tif (code in this.compoundRuleCodes) {\r\n\t\t\t\t\t\tthis.compoundRuleCodes[code].push(word);\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\telse {\r\n\t\t\t\taddWord(word.trim(), []);\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\treturn dictionaryTable;\r\n\t},\r\n\t\r\n\t\r\n\t/**\r\n\t * Removes comment lines and then cleans up blank lines and trailing whitespace.\r\n\t *\r\n\t * @param {String} data The data from a .dic file.\r\n\t * @return {String} The cleaned-up data.\r\n\t */\r\n\t\r\n\t_removeDicComments : function (data) {\r\n\t\t// I can't find any official documentation on it, but at least the de_DE\r\n\t\t// dictionary uses tab-indented lines as comments.\r\n\t\t\r\n\t\t// Remove comments\r\n\t\tdata = data.replace(/^\\t.*$/mg, \"\");\r\n\t\t\r\n\t\treturn data;\r\n\t\t\r\n\t\t// Trim each line\r\n\t\tdata = data.replace(/^\\s\\s*/m, '').replace(/\\s\\s*$/m, '');\r\n\t\t\r\n\t\t// Remove blank lines.\r\n\t\tdata = data.replace(/\\n{2,}/g, \"\\n\");\r\n\t\t\r\n\t\t// Trim the entire string\r\n\t\tdata = data.replace(/^\\s\\s*/, '').replace(/\\s\\s*$/, '');\r\n\t\t\r\n\t\treturn data;\r\n\t},\r\n\t\r\n\tparseRuleCodes : function (textCodes) {\r\n\t\tif (!textCodes) {\r\n\t\t\treturn [];\r\n\t\t}\r\n\t\telse if (!(\"FLAG\" in this.flags)) {\r\n\t\t\treturn textCodes.split(\"\");\r\n\t\t}\r\n\t\telse if (this.flags.FLAG === \"long\") {\r\n\t\t\tvar flags = [];\r\n\t\t\t\r\n\t\t\tfor (var i = 0, _len = textCodes.length; i < _len; i += 2) {\r\n\t\t\t\tflags.push(textCodes.substr(i, 2));\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\treturn flags;\r\n\t\t}\r\n\t\telse if (this.flags.FLAG === \"num\") {\r\n\t\t\treturn textCode.split(\",\");\r\n\t\t}\r\n\t},\r\n\t\r\n\t/**\r\n\t * Applies an affix rule to a word.\r\n\t *\r\n\t * @param {String} word The base word.\r\n\t * @param {Object} rule The affix rule.\r\n\t * @returns {String[]} The new words generated by the rule.\r\n\t */\r\n\t\r\n\t_applyRule : function (word, rule) {\r\n\t\tvar entries = rule.entries;\r\n\t\tvar newWords = [];\r\n\t\t\r\n\t\tfor (var i = 0, _len = entries.length; i < _len; i++) {\r\n\t\t\tvar entry = entries[i];\r\n\t\t\t\r\n\t\t\tif (!entry.match || word.match(entry.match)) {\r\n\t\t\t\tvar newWord = word;\r\n\t\t\t\t\r\n\t\t\t\tif (entry.remove) {\r\n\t\t\t\t\tnewWord = newWord.replace(entry.remove, \"\");\r\n\t\t\t\t}\r\n\t\t\t\t\r\n\t\t\t\tif (rule.type === \"SFX\") {\r\n\t\t\t\t\tnewWord = newWord + entry.add;\r\n\t\t\t\t}\r\n\t\t\t\telse {\r\n\t\t\t\t\tnewWord = entry.add + newWord;\r\n\t\t\t\t}\r\n\t\t\t\t\r\n\t\t\t\tnewWords.push(newWord);\r\n\t\t\t\t\r\n\t\t\t\tif (\"continuationClasses\" in entry) {\r\n\t\t\t\t\tfor (var j = 0, _jlen = entry.continuationClasses.length; j < _jlen; j++) {\r\n\t\t\t\t\t\tvar continuationRule = this.rules[entry.continuationClasses[j]];\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\tif (continuationRule) {\r\n\t\t\t\t\t\t\tnewWords = newWords.concat(this._applyRule(newWord, continuationRule));\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\t/*\r\n\t\t\t\t\t\telse {\r\n\t\t\t\t\t\t\t// This shouldn't happen, but it does, at least in the de_DE dictionary.\r\n\t\t\t\t\t\t\t// I think the author mistakenly supplied lower-case rule codes instead\r\n\t\t\t\t\t\t\t// of upper-case.\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\t*/\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\treturn newWords;\r\n\t},\r\n\t\r\n\t/**\r\n\t * Checks whether a word or a capitalization variant exists in the current dictionary.\r\n\t * The word is trimmed and several variations of capitalizations are checked.\r\n\t * If you want to check a word without any changes made to it, call checkExact()\r\n\t *\r\n\t * @see http://blog.stevenlevithan.com/archives/faster-trim-javascript re:trimming function\r\n\t *\r\n\t * @param {String} aWord The word to check.\r\n\t * @returns {Boolean}\r\n\t */\r\n\t\r\n\tcheck : function (aWord) {\r\n\t\t// Remove leading and trailing whitespace\r\n\t\tvar trimmedWord = aWord.replace(/^\\s\\s*/, '').replace(/\\s\\s*$/, '');\r\n\t\t\r\n\t\tif (this.checkExact(trimmedWord)) {\r\n\t\t\treturn true;\r\n\t\t}\r\n\t\t\r\n\t\t// The exact word is not in the dictionary.\r\n\t\tif (trimmedWord.toUpperCase() === trimmedWord) {\r\n\t\t\t// The word was supplied in all uppercase.\r\n\t\t\t// Check for a capitalized form of the word.\r\n\t\t\tvar capitalizedWord = trimmedWord[0] + trimmedWord.substring(1).toLowerCase();\r\n\t\t\t\r\n\t\t\tif (this.hasFlag(capitalizedWord, \"KEEPCASE\")) {\r\n\t\t\t\t// Capitalization variants are not allowed for this word.\r\n\t\t\t\treturn false;\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\tif (this.checkExact(capitalizedWord)) {\r\n\t\t\t\treturn true;\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\tvar lowercaseWord = trimmedWord.toLowerCase();\r\n\t\t\r\n\t\tif (lowercaseWord !== trimmedWord) {\r\n\t\t\tif (this.hasFlag(lowercaseWord, \"KEEPCASE\")) {\r\n\t\t\t\t// Capitalization variants are not allowed for this word.\r\n\t\t\t\treturn false;\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\t// Check for a lowercase form\r\n\t\t\tif (this.checkExact(lowercaseWord)) {\r\n\t\t\t\treturn true;\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\treturn false;\r\n\t},\r\n\t\r\n\t/**\r\n\t * Checks whether a word exists in the current dictionary.\r\n\t *\r\n\t * @param {String} word The word to check.\r\n\t * @returns {Boolean}\r\n\t */\r\n\t\r\n\tcheckExact : function (word) {\r\n\t\tvar ruleCodes = this.dictionaryTable[word];\r\n\t\t\r\n\t\tif (typeof ruleCodes === 'undefined') {\r\n\t\t\t// Check if this might be a compound word.\r\n\t\t\tif (\"COMPOUNDMIN\" in this.flags && word.length >= this.flags.COMPOUNDMIN) {\r\n\t\t\t\tfor (var i = 0, _len = this.compoundRules.length; i < _len; i++) {\r\n\t\t\t\t\tif (word.match(this.compoundRules[i])) {\r\n\t\t\t\t\t\treturn true;\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\treturn false;\r\n\t\t}\r\n\t\telse {\r\n\t\t\tfor (var i = 0, _len = ruleCodes.length; i < _len; i++) {\r\n\t\t\t\tif (!this.hasFlag(word, \"ONLYINCOMPOUND\", ruleCodes[i])) {\r\n\t\t\t\t\treturn true;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\treturn false;\r\n\t\t}\r\n\t},\r\n\t\r\n\t/**\r\n\t * Looks up whether a given word is flagged with a given flag.\r\n\t *\r\n\t * @param {String} word The word in question.\r\n\t * @param {String} flag The flag in question.\r\n\t * @return {Boolean}\r\n\t */\r\n\t \r\n\thasFlag : function (word, flag, wordFlags) {\r\n\t\tif (flag in this.flags) {\r\n\t\t\tif (typeof wordFlags === 'undefined') {\r\n\t\t\t\tvar wordFlags = Array.prototype.concat.apply([], this.dictionaryTable[word]);\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\tif (wordFlags && wordFlags.indexOf(this.flags[flag]) !== -1) {\r\n\t\t\t\treturn true;\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\treturn false;\r\n\t},\r\n\t\r\n\t/**\r\n\t * Returns a list of suggestions for a misspelled word.\r\n\t *\r\n\t * @see http://www.norvig.com/spell-correct.html for the basis of this suggestor.\r\n\t * This suggestor is primitive, but it works.\r\n\t *\r\n\t * @param {String} word The misspelling.\r\n\t * @param {Number} [limit=5] The maximum number of suggestions to return.\r\n\t * @returns {String[]} The array of suggestions.\r\n\t */\r\n\t\r\n\talphabet : \"\",\r\n\t\r\n\tsuggest : function (word, limit) {\r\n\t\tif (!limit) limit = 5;\r\n\t\t\r\n\t\tif (this.check(word)) return [];\r\n\t\t\r\n\t\t// Check the replacement table.\r\n\t\tfor (var i = 0, _len = this.replacementTable.length; i < _len; i++) {\r\n\t\t\tvar replacementEntry = this.replacementTable[i];\r\n\t\t\t\r\n\t\t\tif (word.indexOf(replacementEntry[0]) !== -1) {\r\n\t\t\t\tvar correctedWord = word.replace(replacementEntry[0], replacementEntry[1]);\r\n\t\t\t\t\r\n\t\t\t\tif (this.check(correctedWord)) {\r\n\t\t\t\t\treturn [ correctedWord ];\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t}\r\n\t\t\r\n\t\tvar self = this;\r\n\t\tself.alphabet = \"abcdefghijklmnopqrstuvwxyz\";\r\n\t\t\r\n\t\t/*\r\n\t\tif (!self.alphabet) {\r\n\t\t\t// Use the alphabet as implicitly defined by the words in the dictionary.\r\n\t\t\tvar alphaHash = {};\r\n\t\t\t\r\n\t\t\tfor (var i in self.dictionaryTable) {\r\n\t\t\t\tfor (var j = 0, _len = i.length; j < _len; j++) {\r\n\t\t\t\t\talphaHash[i[j]] = true;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\tfor (var i in alphaHash) {\r\n\t\t\t\tself.alphabet += i;\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\tvar alphaArray = self.alphabet.split(\"\");\r\n\t\t\talphaArray.sort();\r\n\t\t\tself.alphabet = alphaArray.join(\"\");\r\n\t\t}\r\n\t\t*/\r\n\t\t\r\n\t\tfunction edits1(words) {\r\n\t\t\tvar rv = [];\r\n\t\t\t\r\n\t\t\tfor (var ii = 0, _iilen = words.length; ii < _iilen; ii++) {\r\n\t\t\t\tvar word = words[ii];\r\n\t\t\t\t\r\n\t\t\t\tvar splits = [];\r\n\t\t\t\r\n\t\t\t\tfor (var i = 0, _len = word.length + 1; i < _len; i++) {\r\n\t\t\t\t\tsplits.push([ word.substring(0, i), word.substring(i, word.length) ]);\r\n\t\t\t\t}\r\n\t\t\t\r\n\t\t\t\tvar deletes = [];\r\n\t\t\t\r\n\t\t\t\tfor (var i = 0, _len = splits.length; i < _len; i++) {\r\n\t\t\t\t\tvar s = splits[i];\r\n\t\t\t\t\r\n\t\t\t\t\tif (s[1]) {\r\n\t\t\t\t\t\tdeletes.push(s[0] + s[1].substring(1));\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\r\n\t\t\t\tvar transposes = [];\r\n\t\t\t\r\n\t\t\t\tfor (var i = 0, _len = splits.length; i < _len; i++) {\r\n\t\t\t\t\tvar s = splits[i];\r\n\t\t\t\t\r\n\t\t\t\t\tif (s[1].length > 1) {\r\n\t\t\t\t\t\ttransposes.push(s[0] + s[1][1] + s[1][0] + s[1].substring(2));\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\r\n\t\t\t\tvar replaces = [];\r\n\t\t\t\r\n\t\t\t\tfor (var i = 0, _len = splits.length; i < _len; i++) {\r\n\t\t\t\t\tvar s = splits[i];\r\n\t\t\t\t\r\n\t\t\t\t\tif (s[1]) {\r\n\t\t\t\t\t\tfor (var j = 0, _jlen = self.alphabet.length; j < _jlen; j++) {\r\n\t\t\t\t\t\t\treplaces.push(s[0] + self.alphabet[j] + s[1].substring(1));\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\r\n\t\t\t\tvar inserts = [];\r\n\t\t\t\r\n\t\t\t\tfor (var i = 0, _len = splits.length; i < _len; i++) {\r\n\t\t\t\t\tvar s = splits[i];\r\n\t\t\t\t\r\n\t\t\t\t\tif (s[1]) {\r\n\t\t\t\t\t\tfor (var j = 0, _jlen = self.alphabet.length; j < _jlen; j++) {\r\n\t\t\t\t\t\t\treplaces.push(s[0] + self.alphabet[j] + s[1]);\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\r\n\t\t\t\trv = rv.concat(deletes);\r\n\t\t\t\trv = rv.concat(transposes);\r\n\t\t\t\trv = rv.concat(replaces);\r\n\t\t\t\trv = rv.concat(inserts);\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\treturn rv;\r\n\t\t}\r\n\t\t\r\n\t\tfunction known(words) {\r\n\t\t\tvar rv = [];\r\n\t\t\t\r\n\t\t\tfor (var i = 0; i < words.length; i++) {\r\n\t\t\t\tif (self.check(words[i])) {\r\n\t\t\t\t\trv.push(words[i]);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\treturn rv;\r\n\t\t}\r\n\t\t\r\n\t\tfunction correct(word) {\r\n\t\t\t// Get the edit-distance-1 and edit-distance-2 forms of this word.\r\n\t\t\tvar ed1 = edits1([word]);\r\n\t\t\tvar ed2 = edits1(ed1);\r\n\t\t\t\r\n\t\t\tvar corrections = known(ed1).concat(known(ed2));\r\n\t\t\t\r\n\t\t\t// Sort the edits based on how many different ways they were created.\r\n\t\t\tvar weighted_corrections = {};\r\n\t\t\t\r\n\t\t\tfor (var i = 0, _len = corrections.length; i < _len; i++) {\r\n\t\t\t\tif (!(corrections[i] in weighted_corrections)) {\r\n\t\t\t\t\tweighted_corrections[corrections[i]] = 1;\r\n\t\t\t\t}\r\n\t\t\t\telse {\r\n\t\t\t\t\tweighted_corrections[corrections[i]] += 1;\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\tvar sorted_corrections = [];\r\n\t\t\t\r\n\t\t\tfor (var i in weighted_corrections) {\r\n\t\t\t\tsorted_corrections.push([ i, weighted_corrections[i] ]);\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\tfunction sorter(a, b) {\r\n\t\t\t\tif (a[1] < b[1]) {\r\n\t\t\t\t\treturn -1;\r\n\t\t\t\t}\r\n\t\t\t\t\r\n\t\t\t\treturn 1;\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\tsorted_corrections.sort(sorter).reverse();\r\n\t\t\t\r\n\t\t\tvar rv = [];\r\n\t\t\t\r\n\t\t\tfor (var i = 0, _len = Math.min(limit, sorted_corrections.length); i < _len; i++) {\r\n\t\t\t\tif (!self.hasFlag(sorted_corrections[i][0], \"NOSUGGEST\")) {\r\n\t\t\t\t\trv.push(sorted_corrections[i][0]);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\treturn rv;\r\n\t\t}\r\n\t\t\r\n\t\treturn correct(word);\r\n\t}\r\n};\n; browserify_shim__define__module__export__(typeof Typo != \"undefined\" ? Typo : window.Typo);\n\n}).call(global, undefined, undefined, undefined, undefined, function defineExport(ex) { module.exports = ex; });\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\r\n// Distributed under an MIT license: http://codemirror.net/LICENSE\r\n\r\n(function(mod) {\r\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\r\n    mod(require(\"../../lib/codemirror\"));\r\n  else if (typeof define == \"function\" && define.amd) // AMD\r\n    define([\"../../lib/codemirror\"], mod);\r\n  else // Plain browser env\r\n    mod(CodeMirror);\r\n})(function(CodeMirror) {\r\n  \"use strict\";\r\n\r\n  CodeMirror.defineOption(\"fullScreen\", false, function(cm, val, old) {\r\n    if (old == CodeMirror.Init) old = false;\r\n    if (!old == !val) return;\r\n    if (val) setFullscreen(cm);\r\n    else setNormal(cm);\r\n  });\r\n\r\n  function setFullscreen(cm) {\r\n    var wrap = cm.getWrapperElement();\r\n    cm.state.fullScreenRestore = {scrollTop: window.pageYOffset, scrollLeft: window.pageXOffset,\r\n                                  width: wrap.style.width, height: wrap.style.height};\r\n    wrap.style.width = \"\";\r\n    wrap.style.height = \"auto\";\r\n    wrap.className += \" CodeMirror-fullscreen\";\r\n    document.documentElement.style.overflow = \"hidden\";\r\n    cm.refresh();\r\n  }\r\n\r\n  function setNormal(cm) {\r\n    var wrap = cm.getWrapperElement();\r\n    wrap.className = wrap.className.replace(/\\s*CodeMirror-fullscreen\\b/, \"\");\r\n    document.documentElement.style.overflow = \"\";\r\n    var info = cm.state.fullScreenRestore;\r\n    wrap.style.width = info.width; wrap.style.height = info.height;\r\n    window.scrollTo(info.scrollLeft, info.scrollTop);\r\n    cm.refresh();\r\n  }\r\n});\r\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\r\n// Distributed under an MIT license: http://codemirror.net/LICENSE\r\n\r\n(function(mod) {\r\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\r\n    mod(require(\"../../lib/codemirror\"));\r\n  else if (typeof define == \"function\" && define.amd) // AMD\r\n    define([\"../../lib/codemirror\"], mod);\r\n  else // Plain browser env\r\n    mod(CodeMirror);\r\n})(function(CodeMirror) {\r\n  \"use strict\";\r\n\r\n  var listRE = /^(\\s*)(>[> ]*|[*+-]\\s|(\\d+)([.)]))(\\s*)/,\r\n      emptyListRE = /^(\\s*)(>[> ]*|[*+-]|(\\d+)[.)])(\\s*)$/,\r\n      unorderedListRE = /[*+-]\\s/;\r\n\r\n  CodeMirror.commands.newlineAndIndentContinueMarkdownList = function(cm) {\r\n    if (cm.getOption(\"disableInput\")) return CodeMirror.Pass;\r\n    var ranges = cm.listSelections(), replacements = [];\r\n    for (var i = 0; i < ranges.length; i++) {\r\n      var pos = ranges[i].head;\r\n      var eolState = cm.getStateAfter(pos.line);\r\n      var inList = eolState.list !== false;\r\n      var inQuote = eolState.quote !== 0;\r\n\r\n      var line = cm.getLine(pos.line), match = listRE.exec(line);\r\n      if (!ranges[i].empty() || (!inList && !inQuote) || !match) {\r\n        cm.execCommand(\"newlineAndIndent\");\r\n        return;\r\n      }\r\n      if (emptyListRE.test(line)) {\r\n        cm.replaceRange(\"\", {\r\n          line: pos.line, ch: 0\r\n        }, {\r\n          line: pos.line, ch: pos.ch + 1\r\n        });\r\n        replacements[i] = \"\\n\";\r\n      } else {\r\n        var indent = match[1], after = match[5];\r\n        var bullet = unorderedListRE.test(match[2]) || match[2].indexOf(\">\") >= 0\r\n          ? match[2]\r\n          : (parseInt(match[3], 10) + 1) + match[4];\r\n\r\n        replacements[i] = \"\\n\" + indent + bullet + after;\r\n      }\r\n    }\r\n\r\n    cm.replaceSelections(replacements);\r\n  };\r\n});\r\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\r\n// Distributed under an MIT license: http://codemirror.net/LICENSE\r\n\r\n// Utility function that allows modes to be combined. The mode given\r\n// as the base argument takes care of most of the normal mode\r\n// functionality, but a second (typically simple) mode is used, which\r\n// can override the style of text. Both modes get to parse all of the\r\n// text, but when both assign a non-null style to a piece of code, the\r\n// overlay wins, unless the combine argument was true and not overridden,\r\n// or state.overlay.combineTokens was true, in which case the styles are\r\n// combined.\r\n\r\n(function(mod) {\r\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\r\n    mod(require(\"../../lib/codemirror\"));\r\n  else if (typeof define == \"function\" && define.amd) // AMD\r\n    define([\"../../lib/codemirror\"], mod);\r\n  else // Plain browser env\r\n    mod(CodeMirror);\r\n})(function(CodeMirror) {\r\n\"use strict\";\r\n\r\nCodeMirror.overlayMode = function(base, overlay, combine) {\r\n  return {\r\n    startState: function() {\r\n      return {\r\n        base: CodeMirror.startState(base),\r\n        overlay: CodeMirror.startState(overlay),\r\n        basePos: 0, baseCur: null,\r\n        overlayPos: 0, overlayCur: null,\r\n        streamSeen: null\r\n      };\r\n    },\r\n    copyState: function(state) {\r\n      return {\r\n        base: CodeMirror.copyState(base, state.base),\r\n        overlay: CodeMirror.copyState(overlay, state.overlay),\r\n        basePos: state.basePos, baseCur: null,\r\n        overlayPos: state.overlayPos, overlayCur: null\r\n      };\r\n    },\r\n\r\n    token: function(stream, state) {\r\n      if (stream != state.streamSeen ||\r\n          Math.min(state.basePos, state.overlayPos) < stream.start) {\r\n        state.streamSeen = stream;\r\n        state.basePos = state.overlayPos = stream.start;\r\n      }\r\n\r\n      if (stream.start == state.basePos) {\r\n        state.baseCur = base.token(stream, state.base);\r\n        state.basePos = stream.pos;\r\n      }\r\n      if (stream.start == state.overlayPos) {\r\n        stream.pos = stream.start;\r\n        state.overlayCur = overlay.token(stream, state.overlay);\r\n        state.overlayPos = stream.pos;\r\n      }\r\n      stream.pos = Math.min(state.basePos, state.overlayPos);\r\n\r\n      // state.overlay.combineTokens always takes precedence over combine,\r\n      // unless set to null\r\n      if (state.overlayCur == null) return state.baseCur;\r\n      else if (state.baseCur != null &&\r\n               state.overlay.combineTokens ||\r\n               combine && state.overlay.combineTokens == null)\r\n        return state.baseCur + \" \" + state.overlayCur;\r\n      else return state.overlayCur;\r\n    },\r\n\r\n    indent: base.indent && function(state, textAfter) {\r\n      return base.indent(state.base, textAfter);\r\n    },\r\n    electricChars: base.electricChars,\r\n\r\n    innerMode: function(state) { return {state: state.base, mode: base}; },\r\n\r\n    blankLine: function(state) {\r\n      if (base.blankLine) base.blankLine(state.base);\r\n      if (overlay.blankLine) overlay.blankLine(state.overlay);\r\n    }\r\n  };\r\n};\r\n\r\n});\r\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\r\n// Distributed under an MIT license: http://codemirror.net/LICENSE\r\n\r\n// This is CodeMirror (http://codemirror.net), a code editor\r\n// implemented in JavaScript on top of the browser's DOM.\r\n//\r\n// You can find some technical background for some of the code below\r\n// at http://marijnhaverbeke.nl/blog/#cm-internals .\r\n\r\n(function(mod) {\r\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\r\n    module.exports = mod();\r\n  else if (typeof define == \"function\" && define.amd) // AMD\r\n    return define([], mod);\r\n  else // Plain browser env\r\n    this.CodeMirror = mod();\r\n})(function() {\r\n  \"use strict\";\r\n\r\n  // BROWSER SNIFFING\r\n\r\n  // Kludges for bugs and behavior differences that can't be feature\r\n  // detected are enabled based on userAgent etc sniffing.\r\n  var userAgent = navigator.userAgent;\r\n  var platform = navigator.platform;\r\n\r\n  var gecko = /gecko\\/\\d/i.test(userAgent);\r\n  var ie_upto10 = /MSIE \\d/.test(userAgent);\r\n  var ie_11up = /Trident\\/(?:[7-9]|\\d{2,})\\..*rv:(\\d+)/.exec(userAgent);\r\n  var ie = ie_upto10 || ie_11up;\r\n  var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1]);\r\n  var webkit = /WebKit\\//.test(userAgent);\r\n  var qtwebkit = webkit && /Qt\\/\\d+\\.\\d+/.test(userAgent);\r\n  var chrome = /Chrome\\//.test(userAgent);\r\n  var presto = /Opera\\//.test(userAgent);\r\n  var safari = /Apple Computer/.test(navigator.vendor);\r\n  var mac_geMountainLion = /Mac OS X 1\\d\\D([8-9]|\\d\\d)\\D/.test(userAgent);\r\n  var phantom = /PhantomJS/.test(userAgent);\r\n\r\n  var ios = /AppleWebKit/.test(userAgent) && /Mobile\\/\\w+/.test(userAgent);\r\n  // This is woefully incomplete. Suggestions for alternative methods welcome.\r\n  var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent);\r\n  var mac = ios || /Mac/.test(platform);\r\n  var windows = /win/i.test(platform);\r\n\r\n  var presto_version = presto && userAgent.match(/Version\\/(\\d*\\.\\d*)/);\r\n  if (presto_version) presto_version = Number(presto_version[1]);\r\n  if (presto_version && presto_version >= 15) { presto = false; webkit = true; }\r\n  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X\r\n  var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));\r\n  var captureRightClick = gecko || (ie && ie_version >= 9);\r\n\r\n  // Optimize some code when these features are not used.\r\n  var sawReadOnlySpans = false, sawCollapsedSpans = false;\r\n\r\n  // EDITOR CONSTRUCTOR\r\n\r\n  // A CodeMirror instance represents an editor. This is the object\r\n  // that user code is usually dealing with.\r\n\r\n  function CodeMirror(place, options) {\r\n    if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);\r\n\r\n    this.options = options = options ? copyObj(options) : {};\r\n    // Determine effective options based on given values and defaults.\r\n    copyObj(defaults, options, false);\r\n    setGuttersForLineNumbers(options);\r\n\r\n    var doc = options.value;\r\n    if (typeof doc == \"string\") doc = new Doc(doc, options.mode, null, options.lineSeparator);\r\n    this.doc = doc;\r\n\r\n    var input = new CodeMirror.inputStyles[options.inputStyle](this);\r\n    var display = this.display = new Display(place, doc, input);\r\n    display.wrapper.CodeMirror = this;\r\n    updateGutters(this);\r\n    themeChanged(this);\r\n    if (options.lineWrapping)\r\n      this.display.wrapper.className += \" CodeMirror-wrap\";\r\n    if (options.autofocus && !mobile) display.input.focus();\r\n    initScrollbars(this);\r\n\r\n    this.state = {\r\n      keyMaps: [],  // stores maps added by addKeyMap\r\n      overlays: [], // highlighting overlays, as added by addOverlay\r\n      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info\r\n      overwrite: false,\r\n      delayingBlurEvent: false,\r\n      focused: false,\r\n      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode\r\n      pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll\r\n      selectingText: false,\r\n      draggingText: false,\r\n      highlight: new Delayed(), // stores highlight worker timeout\r\n      keySeq: null,  // Unfinished key sequence\r\n      specialChars: null\r\n    };\r\n\r\n    var cm = this;\r\n\r\n    // Override magic textarea content restore that IE sometimes does\r\n    // on our hidden textarea on reload\r\n    if (ie && ie_version < 11) setTimeout(function() { cm.display.input.reset(true); }, 20);\r\n\r\n    registerEventHandlers(this);\r\n    ensureGlobalHandlers();\r\n\r\n    startOperation(this);\r\n    this.curOp.forceUpdate = true;\r\n    attachDoc(this, doc);\r\n\r\n    if ((options.autofocus && !mobile) || cm.hasFocus())\r\n      setTimeout(bind(onFocus, this), 20);\r\n    else\r\n      onBlur(this);\r\n\r\n    for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))\r\n      optionHandlers[opt](this, options[opt], Init);\r\n    maybeUpdateLineNumberWidth(this);\r\n    if (options.finishInit) options.finishInit(this);\r\n    for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);\r\n    endOperation(this);\r\n    // Suppress optimizelegibility in Webkit, since it breaks text\r\n    // measuring on line wrapping boundaries.\r\n    if (webkit && options.lineWrapping &&\r\n        getComputedStyle(display.lineDiv).textRendering == \"optimizelegibility\")\r\n      display.lineDiv.style.textRendering = \"auto\";\r\n  }\r\n\r\n  // DISPLAY CONSTRUCTOR\r\n\r\n  // The display handles the DOM integration, both for input reading\r\n  // and content drawing. It holds references to DOM nodes and\r\n  // display-related state.\r\n\r\n  function Display(place, doc, input) {\r\n    var d = this;\r\n    this.input = input;\r\n\r\n    // Covers bottom-right square when both scrollbars are present.\r\n    d.scrollbarFiller = elt(\"div\", null, \"CodeMirror-scrollbar-filler\");\r\n    d.scrollbarFiller.setAttribute(\"cm-not-content\", \"true\");\r\n    // Covers bottom of gutter when coverGutterNextToScrollbar is on\r\n    // and h scrollbar is present.\r\n    d.gutterFiller = elt(\"div\", null, \"CodeMirror-gutter-filler\");\r\n    d.gutterFiller.setAttribute(\"cm-not-content\", \"true\");\r\n    // Will contain the actual code, positioned to cover the viewport.\r\n    d.lineDiv = elt(\"div\", null, \"CodeMirror-code\");\r\n    // Elements are added to these to represent selection and cursors.\r\n    d.selectionDiv = elt(\"div\", null, null, \"position: relative; z-index: 1\");\r\n    d.cursorDiv = elt(\"div\", null, \"CodeMirror-cursors\");\r\n    // A visibility: hidden element used to find the size of things.\r\n    d.measure = elt(\"div\", null, \"CodeMirror-measure\");\r\n    // When lines outside of the viewport are measured, they are drawn in this.\r\n    d.lineMeasure = elt(\"div\", null, \"CodeMirror-measure\");\r\n    // Wraps everything that needs to exist inside the vertically-padded coordinate system\r\n    d.lineSpace = elt(\"div\", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],\r\n                      null, \"position: relative; outline: none\");\r\n    // Moved around its parent to cover visible view.\r\n    d.mover = elt(\"div\", [elt(\"div\", [d.lineSpace], \"CodeMirror-lines\")], null, \"position: relative\");\r\n    // Set to the height of the document, allowing scrolling.\r\n    d.sizer = elt(\"div\", [d.mover], \"CodeMirror-sizer\");\r\n    d.sizerWidth = null;\r\n    // Behavior of elts with overflow: auto and padding is\r\n    // inconsistent across browsers. This is used to ensure the\r\n    // scrollable area is big enough.\r\n    d.heightForcer = elt(\"div\", null, null, \"position: absolute; height: \" + scrollerGap + \"px; width: 1px;\");\r\n    // Will contain the gutters, if any.\r\n    d.gutters = elt(\"div\", null, \"CodeMirror-gutters\");\r\n    d.lineGutter = null;\r\n    // Actual scrollable element.\r\n    d.scroller = elt(\"div\", [d.sizer, d.heightForcer, d.gutters], \"CodeMirror-scroll\");\r\n    d.scroller.setAttribute(\"tabIndex\", \"-1\");\r\n    // The element in which the editor lives.\r\n    d.wrapper = elt(\"div\", [d.scrollbarFiller, d.gutterFiller, d.scroller], \"CodeMirror\");\r\n\r\n    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)\r\n    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }\r\n    if (!webkit && !(gecko && mobile)) d.scroller.draggable = true;\r\n\r\n    if (place) {\r\n      if (place.appendChild) place.appendChild(d.wrapper);\r\n      else place(d.wrapper);\r\n    }\r\n\r\n    // Current rendered range (may be bigger than the view window).\r\n    d.viewFrom = d.viewTo = doc.first;\r\n    d.reportedViewFrom = d.reportedViewTo = doc.first;\r\n    // Information about the rendered lines.\r\n    d.view = [];\r\n    d.renderedView = null;\r\n    // Holds info about a single rendered line when it was rendered\r\n    // for measurement, while not in view.\r\n    d.externalMeasured = null;\r\n    // Empty space (in pixels) above the view\r\n    d.viewOffset = 0;\r\n    d.lastWrapHeight = d.lastWrapWidth = 0;\r\n    d.updateLineNumbers = null;\r\n\r\n    d.nativeBarWidth = d.barHeight = d.barWidth = 0;\r\n    d.scrollbarsClipped = false;\r\n\r\n    // Used to only resize the line number gutter when necessary (when\r\n    // the amount of lines crosses a boundary that makes its width change)\r\n    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;\r\n    // Set to true when a non-horizontal-scrolling line widget is\r\n    // added. As an optimization, line widget aligning is skipped when\r\n    // this is false.\r\n    d.alignWidgets = false;\r\n\r\n    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;\r\n\r\n    // Tracks the maximum line length so that the horizontal scrollbar\r\n    // can be kept static when scrolling.\r\n    d.maxLine = null;\r\n    d.maxLineLength = 0;\r\n    d.maxLineChanged = false;\r\n\r\n    // Used for measuring wheel scrolling granularity\r\n    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;\r\n\r\n    // True when shift is held down.\r\n    d.shift = false;\r\n\r\n    // Used to track whether anything happened since the context menu\r\n    // was opened.\r\n    d.selForContextMenu = null;\r\n\r\n    d.activeTouch = null;\r\n\r\n    input.init(d);\r\n  }\r\n\r\n  // STATE UPDATES\r\n\r\n  // Used to get the editor into a consistent state again when options change.\r\n\r\n  function loadMode(cm) {\r\n    cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);\r\n    resetModeState(cm);\r\n  }\r\n\r\n  function resetModeState(cm) {\r\n    cm.doc.iter(function(line) {\r\n      if (line.stateAfter) line.stateAfter = null;\r\n      if (line.styles) line.styles = null;\r\n    });\r\n    cm.doc.frontier = cm.doc.first;\r\n    startWorker(cm, 100);\r\n    cm.state.modeGen++;\r\n    if (cm.curOp) regChange(cm);\r\n  }\r\n\r\n  function wrappingChanged(cm) {\r\n    if (cm.options.lineWrapping) {\r\n      addClass(cm.display.wrapper, \"CodeMirror-wrap\");\r\n      cm.display.sizer.style.minWidth = \"\";\r\n      cm.display.sizerWidth = null;\r\n    } else {\r\n      rmClass(cm.display.wrapper, \"CodeMirror-wrap\");\r\n      findMaxLine(cm);\r\n    }\r\n    estimateLineHeights(cm);\r\n    regChange(cm);\r\n    clearCaches(cm);\r\n    setTimeout(function(){updateScrollbars(cm);}, 100);\r\n  }\r\n\r\n  // Returns a function that estimates the height of a line, to use as\r\n  // first approximation until the line becomes visible (and is thus\r\n  // properly measurable).\r\n  function estimateHeight(cm) {\r\n    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;\r\n    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);\r\n    return function(line) {\r\n      if (lineIsHidden(cm.doc, line)) return 0;\r\n\r\n      var widgetsHeight = 0;\r\n      if (line.widgets) for (var i = 0; i < line.widgets.length; i++) {\r\n        if (line.widgets[i].height) widgetsHeight += line.widgets[i].height;\r\n      }\r\n\r\n      if (wrapping)\r\n        return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th;\r\n      else\r\n        return widgetsHeight + th;\r\n    };\r\n  }\r\n\r\n  function estimateLineHeights(cm) {\r\n    var doc = cm.doc, est = estimateHeight(cm);\r\n    doc.iter(function(line) {\r\n      var estHeight = est(line);\r\n      if (estHeight != line.height) updateLineHeight(line, estHeight);\r\n    });\r\n  }\r\n\r\n  function themeChanged(cm) {\r\n    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\\s*cm-s-\\S+/g, \"\") +\r\n      cm.options.theme.replace(/(^|\\s)\\s*/g, \" cm-s-\");\r\n    clearCaches(cm);\r\n  }\r\n\r\n  function guttersChanged(cm) {\r\n    updateGutters(cm);\r\n    regChange(cm);\r\n    setTimeout(function(){alignHorizontally(cm);}, 20);\r\n  }\r\n\r\n  // Rebuild the gutter elements, ensure the margin to the left of the\r\n  // code matches their width.\r\n  function updateGutters(cm) {\r\n    var gutters = cm.display.gutters, specs = cm.options.gutters;\r\n    removeChildren(gutters);\r\n    for (var i = 0; i < specs.length; ++i) {\r\n      var gutterClass = specs[i];\r\n      var gElt = gutters.appendChild(elt(\"div\", null, \"CodeMirror-gutter \" + gutterClass));\r\n      if (gutterClass == \"CodeMirror-linenumbers\") {\r\n        cm.display.lineGutter = gElt;\r\n        gElt.style.width = (cm.display.lineNumWidth || 1) + \"px\";\r\n      }\r\n    }\r\n    gutters.style.display = i ? \"\" : \"none\";\r\n    updateGutterSpace(cm);\r\n  }\r\n\r\n  function updateGutterSpace(cm) {\r\n    var width = cm.display.gutters.offsetWidth;\r\n    cm.display.sizer.style.marginLeft = width + \"px\";\r\n  }\r\n\r\n  // Compute the character length of a line, taking into account\r\n  // collapsed ranges (see markText) that might hide parts, and join\r\n  // other lines onto it.\r\n  function lineLength(line) {\r\n    if (line.height == 0) return 0;\r\n    var len = line.text.length, merged, cur = line;\r\n    while (merged = collapsedSpanAtStart(cur)) {\r\n      var found = merged.find(0, true);\r\n      cur = found.from.line;\r\n      len += found.from.ch - found.to.ch;\r\n    }\r\n    cur = line;\r\n    while (merged = collapsedSpanAtEnd(cur)) {\r\n      var found = merged.find(0, true);\r\n      len -= cur.text.length - found.from.ch;\r\n      cur = found.to.line;\r\n      len += cur.text.length - found.to.ch;\r\n    }\r\n    return len;\r\n  }\r\n\r\n  // Find the longest line in the document.\r\n  function findMaxLine(cm) {\r\n    var d = cm.display, doc = cm.doc;\r\n    d.maxLine = getLine(doc, doc.first);\r\n    d.maxLineLength = lineLength(d.maxLine);\r\n    d.maxLineChanged = true;\r\n    doc.iter(function(line) {\r\n      var len = lineLength(line);\r\n      if (len > d.maxLineLength) {\r\n        d.maxLineLength = len;\r\n        d.maxLine = line;\r\n      }\r\n    });\r\n  }\r\n\r\n  // Make sure the gutters options contains the element\r\n  // \"CodeMirror-linenumbers\" when the lineNumbers option is true.\r\n  function setGuttersForLineNumbers(options) {\r\n    var found = indexOf(options.gutters, \"CodeMirror-linenumbers\");\r\n    if (found == -1 && options.lineNumbers) {\r\n      options.gutters = options.gutters.concat([\"CodeMirror-linenumbers\"]);\r\n    } else if (found > -1 && !options.lineNumbers) {\r\n      options.gutters = options.gutters.slice(0);\r\n      options.gutters.splice(found, 1);\r\n    }\r\n  }\r\n\r\n  // SCROLLBARS\r\n\r\n  // Prepare DOM reads needed to update the scrollbars. Done in one\r\n  // shot to minimize update/measure roundtrips.\r\n  function measureForScrollbars(cm) {\r\n    var d = cm.display, gutterW = d.gutters.offsetWidth;\r\n    var docH = Math.round(cm.doc.height + paddingVert(cm.display));\r\n    return {\r\n      clientHeight: d.scroller.clientHeight,\r\n      viewHeight: d.wrapper.clientHeight,\r\n      scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,\r\n      viewWidth: d.wrapper.clientWidth,\r\n      barLeft: cm.options.fixedGutter ? gutterW : 0,\r\n      docHeight: docH,\r\n      scrollHeight: docH + scrollGap(cm) + d.barHeight,\r\n      nativeBarWidth: d.nativeBarWidth,\r\n      gutterWidth: gutterW\r\n    };\r\n  }\r\n\r\n  function NativeScrollbars(place, scroll, cm) {\r\n    this.cm = cm;\r\n    var vert = this.vert = elt(\"div\", [elt(\"div\", null, null, \"min-width: 1px\")], \"CodeMirror-vscrollbar\");\r\n    var horiz = this.horiz = elt(\"div\", [elt(\"div\", null, null, \"height: 100%; min-height: 1px\")], \"CodeMirror-hscrollbar\");\r\n    place(vert); place(horiz);\r\n\r\n    on(vert, \"scroll\", function() {\r\n      if (vert.clientHeight) scroll(vert.scrollTop, \"vertical\");\r\n    });\r\n    on(horiz, \"scroll\", function() {\r\n      if (horiz.clientWidth) scroll(horiz.scrollLeft, \"horizontal\");\r\n    });\r\n\r\n    this.checkedZeroWidth = false;\r\n    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).\r\n    if (ie && ie_version < 8) this.horiz.style.minHeight = this.vert.style.minWidth = \"18px\";\r\n  }\r\n\r\n  NativeScrollbars.prototype = copyObj({\r\n    update: function(measure) {\r\n      var needsH = measure.scrollWidth > measure.clientWidth + 1;\r\n      var needsV = measure.scrollHeight > measure.clientHeight + 1;\r\n      var sWidth = measure.nativeBarWidth;\r\n\r\n      if (needsV) {\r\n        this.vert.style.display = \"block\";\r\n        this.vert.style.bottom = needsH ? sWidth + \"px\" : \"0\";\r\n        var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);\r\n        // A bug in IE8 can cause this value to be negative, so guard it.\r\n        this.vert.firstChild.style.height =\r\n          Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + \"px\";\r\n      } else {\r\n        this.vert.style.display = \"\";\r\n        this.vert.firstChild.style.height = \"0\";\r\n      }\r\n\r\n      if (needsH) {\r\n        this.horiz.style.display = \"block\";\r\n        this.horiz.style.right = needsV ? sWidth + \"px\" : \"0\";\r\n        this.horiz.style.left = measure.barLeft + \"px\";\r\n        var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);\r\n        this.horiz.firstChild.style.width =\r\n          (measure.scrollWidth - measure.clientWidth + totalWidth) + \"px\";\r\n      } else {\r\n        this.horiz.style.display = \"\";\r\n        this.horiz.firstChild.style.width = \"0\";\r\n      }\r\n\r\n      if (!this.checkedZeroWidth && measure.clientHeight > 0) {\r\n        if (sWidth == 0) this.zeroWidthHack();\r\n        this.checkedZeroWidth = true;\r\n      }\r\n\r\n      return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0};\r\n    },\r\n    setScrollLeft: function(pos) {\r\n      if (this.horiz.scrollLeft != pos) this.horiz.scrollLeft = pos;\r\n      if (this.disableHoriz) this.enableZeroWidthBar(this.horiz, this.disableHoriz);\r\n    },\r\n    setScrollTop: function(pos) {\r\n      if (this.vert.scrollTop != pos) this.vert.scrollTop = pos;\r\n      if (this.disableVert) this.enableZeroWidthBar(this.vert, this.disableVert);\r\n    },\r\n    zeroWidthHack: function() {\r\n      var w = mac && !mac_geMountainLion ? \"12px\" : \"18px\";\r\n      this.horiz.style.height = this.vert.style.width = w;\r\n      this.horiz.style.pointerEvents = this.vert.style.pointerEvents = \"none\";\r\n      this.disableHoriz = new Delayed;\r\n      this.disableVert = new Delayed;\r\n    },\r\n    enableZeroWidthBar: function(bar, delay) {\r\n      bar.style.pointerEvents = \"auto\";\r\n      function maybeDisable() {\r\n        // To find out whether the scrollbar is still visible, we\r\n        // check whether the element under the pixel in the bottom\r\n        // left corner of the scrollbar box is the scrollbar box\r\n        // itself (when the bar is still visible) or its filler child\r\n        // (when the bar is hidden). If it is still visible, we keep\r\n        // it enabled, if it's hidden, we disable pointer events.\r\n        var box = bar.getBoundingClientRect();\r\n        var elt = document.elementFromPoint(box.left + 1, box.bottom - 1);\r\n        if (elt != bar) bar.style.pointerEvents = \"none\";\r\n        else delay.set(1000, maybeDisable);\r\n      }\r\n      delay.set(1000, maybeDisable);\r\n    },\r\n    clear: function() {\r\n      var parent = this.horiz.parentNode;\r\n      parent.removeChild(this.horiz);\r\n      parent.removeChild(this.vert);\r\n    }\r\n  }, NativeScrollbars.prototype);\r\n\r\n  function NullScrollbars() {}\r\n\r\n  NullScrollbars.prototype = copyObj({\r\n    update: function() { return {bottom: 0, right: 0}; },\r\n    setScrollLeft: function() {},\r\n    setScrollTop: function() {},\r\n    clear: function() {}\r\n  }, NullScrollbars.prototype);\r\n\r\n  CodeMirror.scrollbarModel = {\"native\": NativeScrollbars, \"null\": NullScrollbars};\r\n\r\n  function initScrollbars(cm) {\r\n    if (cm.display.scrollbars) {\r\n      cm.display.scrollbars.clear();\r\n      if (cm.display.scrollbars.addClass)\r\n        rmClass(cm.display.wrapper, cm.display.scrollbars.addClass);\r\n    }\r\n\r\n    cm.display.scrollbars = new CodeMirror.scrollbarModel[cm.options.scrollbarStyle](function(node) {\r\n      cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);\r\n      // Prevent clicks in the scrollbars from killing focus\r\n      on(node, \"mousedown\", function() {\r\n        if (cm.state.focused) setTimeout(function() { cm.display.input.focus(); }, 0);\r\n      });\r\n      node.setAttribute(\"cm-not-content\", \"true\");\r\n    }, function(pos, axis) {\r\n      if (axis == \"horizontal\") setScrollLeft(cm, pos);\r\n      else setScrollTop(cm, pos);\r\n    }, cm);\r\n    if (cm.display.scrollbars.addClass)\r\n      addClass(cm.display.wrapper, cm.display.scrollbars.addClass);\r\n  }\r\n\r\n  function updateScrollbars(cm, measure) {\r\n    if (!measure) measure = measureForScrollbars(cm);\r\n    var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight;\r\n    updateScrollbarsInner(cm, measure);\r\n    for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {\r\n      if (startWidth != cm.display.barWidth && cm.options.lineWrapping)\r\n        updateHeightsInViewport(cm);\r\n      updateScrollbarsInner(cm, measureForScrollbars(cm));\r\n      startWidth = cm.display.barWidth; startHeight = cm.display.barHeight;\r\n    }\r\n  }\r\n\r\n  // Re-synchronize the fake scrollbars with the actual size of the\r\n  // content.\r\n  function updateScrollbarsInner(cm, measure) {\r\n    var d = cm.display;\r\n    var sizes = d.scrollbars.update(measure);\r\n\r\n    d.sizer.style.paddingRight = (d.barWidth = sizes.right) + \"px\";\r\n    d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + \"px\";\r\n\r\n    if (sizes.right && sizes.bottom) {\r\n      d.scrollbarFiller.style.display = \"block\";\r\n      d.scrollbarFiller.style.height = sizes.bottom + \"px\";\r\n      d.scrollbarFiller.style.width = sizes.right + \"px\";\r\n    } else d.scrollbarFiller.style.display = \"\";\r\n    if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {\r\n      d.gutterFiller.style.display = \"block\";\r\n      d.gutterFiller.style.height = sizes.bottom + \"px\";\r\n      d.gutterFiller.style.width = measure.gutterWidth + \"px\";\r\n    } else d.gutterFiller.style.display = \"\";\r\n  }\r\n\r\n  // Compute the lines that are visible in a given viewport (defaults\r\n  // the the current scroll position). viewport may contain top,\r\n  // height, and ensure (see op.scrollToPos) properties.\r\n  function visibleLines(display, doc, viewport) {\r\n    var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;\r\n    top = Math.floor(top - paddingTop(display));\r\n    var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;\r\n\r\n    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);\r\n    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and\r\n    // forces those lines into the viewport (if possible).\r\n    if (viewport && viewport.ensure) {\r\n      var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line;\r\n      if (ensureFrom < from) {\r\n        from = ensureFrom;\r\n        to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);\r\n      } else if (Math.min(ensureTo, doc.lastLine()) >= to) {\r\n        from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);\r\n        to = ensureTo;\r\n      }\r\n    }\r\n    return {from: from, to: Math.max(to, from + 1)};\r\n  }\r\n\r\n  // LINE NUMBERS\r\n\r\n  // Re-align line numbers and gutter marks to compensate for\r\n  // horizontal scrolling.\r\n  function alignHorizontally(cm) {\r\n    var display = cm.display, view = display.view;\r\n    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;\r\n    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;\r\n    var gutterW = display.gutters.offsetWidth, left = comp + \"px\";\r\n    for (var i = 0; i < view.length; i++) if (!view[i].hidden) {\r\n      if (cm.options.fixedGutter && view[i].gutter)\r\n        view[i].gutter.style.left = left;\r\n      var align = view[i].alignable;\r\n      if (align) for (var j = 0; j < align.length; j++)\r\n        align[j].style.left = left;\r\n    }\r\n    if (cm.options.fixedGutter)\r\n      display.gutters.style.left = (comp + gutterW) + \"px\";\r\n  }\r\n\r\n  // Used to ensure that the line number gutter is still the right\r\n  // size for the current document size. Returns true when an update\r\n  // is needed.\r\n  function maybeUpdateLineNumberWidth(cm) {\r\n    if (!cm.options.lineNumbers) return false;\r\n    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;\r\n    if (last.length != display.lineNumChars) {\r\n      var test = display.measure.appendChild(elt(\"div\", [elt(\"div\", last)],\r\n                                                 \"CodeMirror-linenumber CodeMirror-gutter-elt\"));\r\n      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;\r\n      display.lineGutter.style.width = \"\";\r\n      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;\r\n      display.lineNumWidth = display.lineNumInnerWidth + padding;\r\n      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;\r\n      display.lineGutter.style.width = display.lineNumWidth + \"px\";\r\n      updateGutterSpace(cm);\r\n      return true;\r\n    }\r\n    return false;\r\n  }\r\n\r\n  function lineNumberFor(options, i) {\r\n    return String(options.lineNumberFormatter(i + options.firstLineNumber));\r\n  }\r\n\r\n  // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,\r\n  // but using getBoundingClientRect to get a sub-pixel-accurate\r\n  // result.\r\n  function compensateForHScroll(display) {\r\n    return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;\r\n  }\r\n\r\n  // DISPLAY DRAWING\r\n\r\n  function DisplayUpdate(cm, viewport, force) {\r\n    var display = cm.display;\r\n\r\n    this.viewport = viewport;\r\n    // Store some values that we'll need later (but don't want to force a relayout for)\r\n    this.visible = visibleLines(display, cm.doc, viewport);\r\n    this.editorIsHidden = !display.wrapper.offsetWidth;\r\n    this.wrapperHeight = display.wrapper.clientHeight;\r\n    this.wrapperWidth = display.wrapper.clientWidth;\r\n    this.oldDisplayWidth = displayWidth(cm);\r\n    this.force = force;\r\n    this.dims = getDimensions(cm);\r\n    this.events = [];\r\n  }\r\n\r\n  DisplayUpdate.prototype.signal = function(emitter, type) {\r\n    if (hasHandler(emitter, type))\r\n      this.events.push(arguments);\r\n  };\r\n  DisplayUpdate.prototype.finish = function() {\r\n    for (var i = 0; i < this.events.length; i++)\r\n      signal.apply(null, this.events[i]);\r\n  };\r\n\r\n  function maybeClipScrollbars(cm) {\r\n    var display = cm.display;\r\n    if (!display.scrollbarsClipped && display.scroller.offsetWidth) {\r\n      display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;\r\n      display.heightForcer.style.height = scrollGap(cm) + \"px\";\r\n      display.sizer.style.marginBottom = -display.nativeBarWidth + \"px\";\r\n      display.sizer.style.borderRightWidth = scrollGap(cm) + \"px\";\r\n      display.scrollbarsClipped = true;\r\n    }\r\n  }\r\n\r\n  // Does the actual updating of the line display. Bails out\r\n  // (returning false) when there is nothing to be done and forced is\r\n  // false.\r\n  function updateDisplayIfNeeded(cm, update) {\r\n    var display = cm.display, doc = cm.doc;\r\n\r\n    if (update.editorIsHidden) {\r\n      resetView(cm);\r\n      return false;\r\n    }\r\n\r\n    // Bail out if the visible area is already rendered and nothing changed.\r\n    if (!update.force &&\r\n        update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&\r\n        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&\r\n        display.renderedView == display.view && countDirtyView(cm) == 0)\r\n      return false;\r\n\r\n    if (maybeUpdateLineNumberWidth(cm)) {\r\n      resetView(cm);\r\n      update.dims = getDimensions(cm);\r\n    }\r\n\r\n    // Compute a suitable new viewport (from & to)\r\n    var end = doc.first + doc.size;\r\n    var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);\r\n    var to = Math.min(end, update.visible.to + cm.options.viewportMargin);\r\n    if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);\r\n    if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);\r\n    if (sawCollapsedSpans) {\r\n      from = visualLineNo(cm.doc, from);\r\n      to = visualLineEndNo(cm.doc, to);\r\n    }\r\n\r\n    var different = from != display.viewFrom || to != display.viewTo ||\r\n      display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;\r\n    adjustView(cm, from, to);\r\n\r\n    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));\r\n    // Position the mover div to align with the current scroll position\r\n    cm.display.mover.style.top = display.viewOffset + \"px\";\r\n\r\n    var toUpdate = countDirtyView(cm);\r\n    if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&\r\n        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))\r\n      return false;\r\n\r\n    // For big changes, we hide the enclosing element during the\r\n    // update, since that speeds up the operations on most browsers.\r\n    var focused = activeElt();\r\n    if (toUpdate > 4) display.lineDiv.style.display = \"none\";\r\n    patchDisplay(cm, display.updateLineNumbers, update.dims);\r\n    if (toUpdate > 4) display.lineDiv.style.display = \"\";\r\n    display.renderedView = display.view;\r\n    // There might have been a widget with a focused element that got\r\n    // hidden or updated, if so re-focus it.\r\n    if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();\r\n\r\n    // Prevent selection and cursors from interfering with the scroll\r\n    // width and height.\r\n    removeChildren(display.cursorDiv);\r\n    removeChildren(display.selectionDiv);\r\n    display.gutters.style.height = display.sizer.style.minHeight = 0;\r\n\r\n    if (different) {\r\n      display.lastWrapHeight = update.wrapperHeight;\r\n      display.lastWrapWidth = update.wrapperWidth;\r\n      startWorker(cm, 400);\r\n    }\r\n\r\n    display.updateLineNumbers = null;\r\n\r\n    return true;\r\n  }\r\n\r\n  function postUpdateDisplay(cm, update) {\r\n    var viewport = update.viewport;\r\n    for (var first = true;; first = false) {\r\n      if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {\r\n        // Clip forced viewport to actual scrollable area.\r\n        if (viewport && viewport.top != null)\r\n          viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)};\r\n        // Updated line heights might result in the drawn area not\r\n        // actually covering the viewport. Keep looping until it does.\r\n        update.visible = visibleLines(cm.display, cm.doc, viewport);\r\n        if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)\r\n          break;\r\n      }\r\n      if (!updateDisplayIfNeeded(cm, update)) break;\r\n      updateHeightsInViewport(cm);\r\n      var barMeasure = measureForScrollbars(cm);\r\n      updateSelection(cm);\r\n      setDocumentHeight(cm, barMeasure);\r\n      updateScrollbars(cm, barMeasure);\r\n    }\r\n\r\n    update.signal(cm, \"update\", cm);\r\n    if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {\r\n      update.signal(cm, \"viewportChange\", cm, cm.display.viewFrom, cm.display.viewTo);\r\n      cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo;\r\n    }\r\n  }\r\n\r\n  function updateDisplaySimple(cm, viewport) {\r\n    var update = new DisplayUpdate(cm, viewport);\r\n    if (updateDisplayIfNeeded(cm, update)) {\r\n      updateHeightsInViewport(cm);\r\n      postUpdateDisplay(cm, update);\r\n      var barMeasure = measureForScrollbars(cm);\r\n      updateSelection(cm);\r\n      setDocumentHeight(cm, barMeasure);\r\n      updateScrollbars(cm, barMeasure);\r\n      update.finish();\r\n    }\r\n  }\r\n\r\n  function setDocumentHeight(cm, measure) {\r\n    cm.display.sizer.style.minHeight = measure.docHeight + \"px\";\r\n    var total = measure.docHeight + cm.display.barHeight;\r\n    cm.display.heightForcer.style.top = total + \"px\";\r\n    cm.display.gutters.style.height = Math.max(total + scrollGap(cm), measure.clientHeight) + \"px\";\r\n  }\r\n\r\n  // Read the actual heights of the rendered lines, and update their\r\n  // stored heights to match.\r\n  function updateHeightsInViewport(cm) {\r\n    var display = cm.display;\r\n    var prevBottom = display.lineDiv.offsetTop;\r\n    for (var i = 0; i < display.view.length; i++) {\r\n      var cur = display.view[i], height;\r\n      if (cur.hidden) continue;\r\n      if (ie && ie_version < 8) {\r\n        var bot = cur.node.offsetTop + cur.node.offsetHeight;\r\n        height = bot - prevBottom;\r\n        prevBottom = bot;\r\n      } else {\r\n        var box = cur.node.getBoundingClientRect();\r\n        height = box.bottom - box.top;\r\n      }\r\n      var diff = cur.line.height - height;\r\n      if (height < 2) height = textHeight(display);\r\n      if (diff > .001 || diff < -.001) {\r\n        updateLineHeight(cur.line, height);\r\n        updateWidgetHeight(cur.line);\r\n        if (cur.rest) for (var j = 0; j < cur.rest.length; j++)\r\n          updateWidgetHeight(cur.rest[j]);\r\n      }\r\n    }\r\n  }\r\n\r\n  // Read and store the height of line widgets associated with the\r\n  // given line.\r\n  function updateWidgetHeight(line) {\r\n    if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)\r\n      line.widgets[i].height = line.widgets[i].node.parentNode.offsetHeight;\r\n  }\r\n\r\n  // Do a bulk-read of the DOM positions and sizes needed to draw the\r\n  // view, so that we don't interleave reading and writing to the DOM.\r\n  function getDimensions(cm) {\r\n    var d = cm.display, left = {}, width = {};\r\n    var gutterLeft = d.gutters.clientLeft;\r\n    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {\r\n      left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft;\r\n      width[cm.options.gutters[i]] = n.clientWidth;\r\n    }\r\n    return {fixedPos: compensateForHScroll(d),\r\n            gutterTotalWidth: d.gutters.offsetWidth,\r\n            gutterLeft: left,\r\n            gutterWidth: width,\r\n            wrapperWidth: d.wrapper.clientWidth};\r\n  }\r\n\r\n  // Sync the actual display DOM structure with display.view, removing\r\n  // nodes for lines that are no longer in view, and creating the ones\r\n  // that are not there yet, and updating the ones that are out of\r\n  // date.\r\n  function patchDisplay(cm, updateNumbersFrom, dims) {\r\n    var display = cm.display, lineNumbers = cm.options.lineNumbers;\r\n    var container = display.lineDiv, cur = container.firstChild;\r\n\r\n    function rm(node) {\r\n      var next = node.nextSibling;\r\n      // Works around a throw-scroll bug in OS X Webkit\r\n      if (webkit && mac && cm.display.currentWheelTarget == node)\r\n        node.style.display = \"none\";\r\n      else\r\n        node.parentNode.removeChild(node);\r\n      return next;\r\n    }\r\n\r\n    var view = display.view, lineN = display.viewFrom;\r\n    // Loop over the elements in the view, syncing cur (the DOM nodes\r\n    // in display.lineDiv) with the view as we go.\r\n    for (var i = 0; i < view.length; i++) {\r\n      var lineView = view[i];\r\n      if (lineView.hidden) {\r\n      } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet\r\n        var node = buildLineElement(cm, lineView, lineN, dims);\r\n        container.insertBefore(node, cur);\r\n      } else { // Already drawn\r\n        while (cur != lineView.node) cur = rm(cur);\r\n        var updateNumber = lineNumbers && updateNumbersFrom != null &&\r\n          updateNumbersFrom <= lineN && lineView.lineNumber;\r\n        if (lineView.changes) {\r\n          if (indexOf(lineView.changes, \"gutter\") > -1) updateNumber = false;\r\n          updateLineForChanges(cm, lineView, lineN, dims);\r\n        }\r\n        if (updateNumber) {\r\n          removeChildren(lineView.lineNumber);\r\n          lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));\r\n        }\r\n        cur = lineView.node.nextSibling;\r\n      }\r\n      lineN += lineView.size;\r\n    }\r\n    while (cur) cur = rm(cur);\r\n  }\r\n\r\n  // When an aspect of a line changes, a string is added to\r\n  // lineView.changes. This updates the relevant part of the line's\r\n  // DOM structure.\r\n  function updateLineForChanges(cm, lineView, lineN, dims) {\r\n    for (var j = 0; j < lineView.changes.length; j++) {\r\n      var type = lineView.changes[j];\r\n      if (type == \"text\") updateLineText(cm, lineView);\r\n      else if (type == \"gutter\") updateLineGutter(cm, lineView, lineN, dims);\r\n      else if (type == \"class\") updateLineClasses(lineView);\r\n      else if (type == \"widget\") updateLineWidgets(cm, lineView, dims);\r\n    }\r\n    lineView.changes = null;\r\n  }\r\n\r\n  // Lines with gutter elements, widgets or a background class need to\r\n  // be wrapped, and have the extra elements added to the wrapper div\r\n  function ensureLineWrapped(lineView) {\r\n    if (lineView.node == lineView.text) {\r\n      lineView.node = elt(\"div\", null, null, \"position: relative\");\r\n      if (lineView.text.parentNode)\r\n        lineView.text.parentNode.replaceChild(lineView.node, lineView.text);\r\n      lineView.node.appendChild(lineView.text);\r\n      if (ie && ie_version < 8) lineView.node.style.zIndex = 2;\r\n    }\r\n    return lineView.node;\r\n  }\r\n\r\n  function updateLineBackground(lineView) {\r\n    var cls = lineView.bgClass ? lineView.bgClass + \" \" + (lineView.line.bgClass || \"\") : lineView.line.bgClass;\r\n    if (cls) cls += \" CodeMirror-linebackground\";\r\n    if (lineView.background) {\r\n      if (cls) lineView.background.className = cls;\r\n      else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }\r\n    } else if (cls) {\r\n      var wrap = ensureLineWrapped(lineView);\r\n      lineView.background = wrap.insertBefore(elt(\"div\", null, cls), wrap.firstChild);\r\n    }\r\n  }\r\n\r\n  // Wrapper around buildLineContent which will reuse the structure\r\n  // in display.externalMeasured when possible.\r\n  function getLineContent(cm, lineView) {\r\n    var ext = cm.display.externalMeasured;\r\n    if (ext && ext.line == lineView.line) {\r\n      cm.display.externalMeasured = null;\r\n      lineView.measure = ext.measure;\r\n      return ext.built;\r\n    }\r\n    return buildLineContent(cm, lineView);\r\n  }\r\n\r\n  // Redraw the line's text. Interacts with the background and text\r\n  // classes because the mode may output tokens that influence these\r\n  // classes.\r\n  function updateLineText(cm, lineView) {\r\n    var cls = lineView.text.className;\r\n    var built = getLineContent(cm, lineView);\r\n    if (lineView.text == lineView.node) lineView.node = built.pre;\r\n    lineView.text.parentNode.replaceChild(built.pre, lineView.text);\r\n    lineView.text = built.pre;\r\n    if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {\r\n      lineView.bgClass = built.bgClass;\r\n      lineView.textClass = built.textClass;\r\n      updateLineClasses(lineView);\r\n    } else if (cls) {\r\n      lineView.text.className = cls;\r\n    }\r\n  }\r\n\r\n  function updateLineClasses(lineView) {\r\n    updateLineBackground(lineView);\r\n    if (lineView.line.wrapClass)\r\n      ensureLineWrapped(lineView).className = lineView.line.wrapClass;\r\n    else if (lineView.node != lineView.text)\r\n      lineView.node.className = \"\";\r\n    var textClass = lineView.textClass ? lineView.textClass + \" \" + (lineView.line.textClass || \"\") : lineView.line.textClass;\r\n    lineView.text.className = textClass || \"\";\r\n  }\r\n\r\n  function updateLineGutter(cm, lineView, lineN, dims) {\r\n    if (lineView.gutter) {\r\n      lineView.node.removeChild(lineView.gutter);\r\n      lineView.gutter = null;\r\n    }\r\n    if (lineView.gutterBackground) {\r\n      lineView.node.removeChild(lineView.gutterBackground);\r\n      lineView.gutterBackground = null;\r\n    }\r\n    if (lineView.line.gutterClass) {\r\n      var wrap = ensureLineWrapped(lineView);\r\n      lineView.gutterBackground = elt(\"div\", null, \"CodeMirror-gutter-background \" + lineView.line.gutterClass,\r\n                                      \"left: \" + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) +\r\n                                      \"px; width: \" + dims.gutterTotalWidth + \"px\");\r\n      wrap.insertBefore(lineView.gutterBackground, lineView.text);\r\n    }\r\n    var markers = lineView.line.gutterMarkers;\r\n    if (cm.options.lineNumbers || markers) {\r\n      var wrap = ensureLineWrapped(lineView);\r\n      var gutterWrap = lineView.gutter = elt(\"div\", null, \"CodeMirror-gutter-wrapper\", \"left: \" +\r\n                                             (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + \"px\");\r\n      cm.display.input.setUneditable(gutterWrap);\r\n      wrap.insertBefore(gutterWrap, lineView.text);\r\n      if (lineView.line.gutterClass)\r\n        gutterWrap.className += \" \" + lineView.line.gutterClass;\r\n      if (cm.options.lineNumbers && (!markers || !markers[\"CodeMirror-linenumbers\"]))\r\n        lineView.lineNumber = gutterWrap.appendChild(\r\n          elt(\"div\", lineNumberFor(cm.options, lineN),\r\n              \"CodeMirror-linenumber CodeMirror-gutter-elt\",\r\n              \"left: \" + dims.gutterLeft[\"CodeMirror-linenumbers\"] + \"px; width: \"\r\n              + cm.display.lineNumInnerWidth + \"px\"));\r\n      if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) {\r\n        var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];\r\n        if (found)\r\n          gutterWrap.appendChild(elt(\"div\", [found], \"CodeMirror-gutter-elt\", \"left: \" +\r\n                                     dims.gutterLeft[id] + \"px; width: \" + dims.gutterWidth[id] + \"px\"));\r\n      }\r\n    }\r\n  }\r\n\r\n  function updateLineWidgets(cm, lineView, dims) {\r\n    if (lineView.alignable) lineView.alignable = null;\r\n    for (var node = lineView.node.firstChild, next; node; node = next) {\r\n      var next = node.nextSibling;\r\n      if (node.className == \"CodeMirror-linewidget\")\r\n        lineView.node.removeChild(node);\r\n    }\r\n    insertLineWidgets(cm, lineView, dims);\r\n  }\r\n\r\n  // Build a line's DOM representation from scratch\r\n  function buildLineElement(cm, lineView, lineN, dims) {\r\n    var built = getLineContent(cm, lineView);\r\n    lineView.text = lineView.node = built.pre;\r\n    if (built.bgClass) lineView.bgClass = built.bgClass;\r\n    if (built.textClass) lineView.textClass = built.textClass;\r\n\r\n    updateLineClasses(lineView);\r\n    updateLineGutter(cm, lineView, lineN, dims);\r\n    insertLineWidgets(cm, lineView, dims);\r\n    return lineView.node;\r\n  }\r\n\r\n  // A lineView may contain multiple logical lines (when merged by\r\n  // collapsed spans). The widgets for all of them need to be drawn.\r\n  function insertLineWidgets(cm, lineView, dims) {\r\n    insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);\r\n    if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)\r\n      insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false);\r\n  }\r\n\r\n  function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {\r\n    if (!line.widgets) return;\r\n    var wrap = ensureLineWrapped(lineView);\r\n    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {\r\n      var widget = ws[i], node = elt(\"div\", [widget.node], \"CodeMirror-linewidget\");\r\n      if (!widget.handleMouseEvents) node.setAttribute(\"cm-ignore-events\", \"true\");\r\n      positionLineWidget(widget, node, lineView, dims);\r\n      cm.display.input.setUneditable(node);\r\n      if (allowAbove && widget.above)\r\n        wrap.insertBefore(node, lineView.gutter || lineView.text);\r\n      else\r\n        wrap.appendChild(node);\r\n      signalLater(widget, \"redraw\");\r\n    }\r\n  }\r\n\r\n  function positionLineWidget(widget, node, lineView, dims) {\r\n    if (widget.noHScroll) {\r\n      (lineView.alignable || (lineView.alignable = [])).push(node);\r\n      var width = dims.wrapperWidth;\r\n      node.style.left = dims.fixedPos + \"px\";\r\n      if (!widget.coverGutter) {\r\n        width -= dims.gutterTotalWidth;\r\n        node.style.paddingLeft = dims.gutterTotalWidth + \"px\";\r\n      }\r\n      node.style.width = width + \"px\";\r\n    }\r\n    if (widget.coverGutter) {\r\n      node.style.zIndex = 5;\r\n      node.style.position = \"relative\";\r\n      if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + \"px\";\r\n    }\r\n  }\r\n\r\n  // POSITION OBJECT\r\n\r\n  // A Pos instance represents a position within the text.\r\n  var Pos = CodeMirror.Pos = function(line, ch) {\r\n    if (!(this instanceof Pos)) return new Pos(line, ch);\r\n    this.line = line; this.ch = ch;\r\n  };\r\n\r\n  // Compare two positions, return 0 if they are the same, a negative\r\n  // number when a is less, and a positive number otherwise.\r\n  var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; };\r\n\r\n  function copyPos(x) {return Pos(x.line, x.ch);}\r\n  function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; }\r\n  function minPos(a, b) { return cmp(a, b) < 0 ? a : b; }\r\n\r\n  // INPUT HANDLING\r\n\r\n  function ensureFocus(cm) {\r\n    if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); }\r\n  }\r\n\r\n  function isReadOnly(cm) {\r\n    return cm.options.readOnly || cm.doc.cantEdit;\r\n  }\r\n\r\n  // This will be set to an array of strings when copying, so that,\r\n  // when pasting, we know what kind of selections the copied text\r\n  // was made out of.\r\n  var lastCopied = null;\r\n\r\n  function applyTextInput(cm, inserted, deleted, sel, origin) {\r\n    var doc = cm.doc;\r\n    cm.display.shift = false;\r\n    if (!sel) sel = doc.sel;\r\n\r\n    var paste = cm.state.pasteIncoming || origin == \"paste\";\r\n    var textLines = doc.splitLines(inserted), multiPaste = null;\r\n    // When pasing N lines into N selections, insert one line per selection\r\n    if (paste && sel.ranges.length > 1) {\r\n      if (lastCopied && lastCopied.join(\"\\n\") == inserted) {\r\n        if (sel.ranges.length % lastCopied.length == 0) {\r\n          multiPaste = [];\r\n          for (var i = 0; i < lastCopied.length; i++)\r\n            multiPaste.push(doc.splitLines(lastCopied[i]));\r\n        }\r\n      } else if (textLines.length == sel.ranges.length) {\r\n        multiPaste = map(textLines, function(l) { return [l]; });\r\n      }\r\n    }\r\n\r\n    // Normal behavior is to insert the new text into every selection\r\n    for (var i = sel.ranges.length - 1; i >= 0; i--) {\r\n      var range = sel.ranges[i];\r\n      var from = range.from(), to = range.to();\r\n      if (range.empty()) {\r\n        if (deleted && deleted > 0) // Handle deletion\r\n          from = Pos(from.line, from.ch - deleted);\r\n        else if (cm.state.overwrite && !paste) // Handle overwrite\r\n          to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));\r\n      }\r\n      var updateInput = cm.curOp.updateInput;\r\n      var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines,\r\n                         origin: origin || (paste ? \"paste\" : cm.state.cutIncoming ? \"cut\" : \"+input\")};\r\n      makeChange(cm.doc, changeEvent);\r\n      signalLater(cm, \"inputRead\", cm, changeEvent);\r\n    }\r\n    if (inserted && !paste)\r\n      triggerElectric(cm, inserted);\r\n\r\n    ensureCursorVisible(cm);\r\n    cm.curOp.updateInput = updateInput;\r\n    cm.curOp.typing = true;\r\n    cm.state.pasteIncoming = cm.state.cutIncoming = false;\r\n  }\r\n\r\n  function handlePaste(e, cm) {\r\n    var pasted = e.clipboardData && e.clipboardData.getData(\"text/plain\");\r\n    if (pasted) {\r\n      e.preventDefault();\r\n      if (!isReadOnly(cm) && !cm.options.disableInput)\r\n        runInOp(cm, function() { applyTextInput(cm, pasted, 0, null, \"paste\"); });\r\n      return true;\r\n    }\r\n  }\r\n\r\n  function triggerElectric(cm, inserted) {\r\n    // When an 'electric' character is inserted, immediately trigger a reindent\r\n    if (!cm.options.electricChars || !cm.options.smartIndent) return;\r\n    var sel = cm.doc.sel;\r\n\r\n    for (var i = sel.ranges.length - 1; i >= 0; i--) {\r\n      var range = sel.ranges[i];\r\n      if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) continue;\r\n      var mode = cm.getModeAt(range.head);\r\n      var indented = false;\r\n      if (mode.electricChars) {\r\n        for (var j = 0; j < mode.electricChars.length; j++)\r\n          if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {\r\n            indented = indentLine(cm, range.head.line, \"smart\");\r\n            break;\r\n          }\r\n      } else if (mode.electricInput) {\r\n        if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))\r\n          indented = indentLine(cm, range.head.line, \"smart\");\r\n      }\r\n      if (indented) signalLater(cm, \"electricInput\", cm, range.head.line);\r\n    }\r\n  }\r\n\r\n  function copyableRanges(cm) {\r\n    var text = [], ranges = [];\r\n    for (var i = 0; i < cm.doc.sel.ranges.length; i++) {\r\n      var line = cm.doc.sel.ranges[i].head.line;\r\n      var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};\r\n      ranges.push(lineRange);\r\n      text.push(cm.getRange(lineRange.anchor, lineRange.head));\r\n    }\r\n    return {text: text, ranges: ranges};\r\n  }\r\n\r\n  function disableBrowserMagic(field) {\r\n    field.setAttribute(\"autocorrect\", \"off\");\r\n    field.setAttribute(\"autocapitalize\", \"off\");\r\n    field.setAttribute(\"spellcheck\", \"false\");\r\n  }\r\n\r\n  // TEXTAREA INPUT STYLE\r\n\r\n  function TextareaInput(cm) {\r\n    this.cm = cm;\r\n    // See input.poll and input.reset\r\n    this.prevInput = \"\";\r\n\r\n    // Flag that indicates whether we expect input to appear real soon\r\n    // now (after some event like 'keypress' or 'input') and are\r\n    // polling intensively.\r\n    this.pollingFast = false;\r\n    // Self-resetting timeout for the poller\r\n    this.polling = new Delayed();\r\n    // Tracks when input.reset has punted to just putting a short\r\n    // string into the textarea instead of the full selection.\r\n    this.inaccurateSelection = false;\r\n    // Used to work around IE issue with selection being forgotten when focus moves away from textarea\r\n    this.hasSelection = false;\r\n    this.composing = null;\r\n  };\r\n\r\n  function hiddenTextarea() {\r\n    var te = elt(\"textarea\", null, null, \"position: absolute; padding: 0; width: 1px; height: 1em; outline: none\");\r\n    var div = elt(\"div\", [te], null, \"overflow: hidden; position: relative; width: 3px; height: 0px;\");\r\n    // The textarea is kept positioned near the cursor to prevent the\r\n    // fact that it'll be scrolled into view on input from scrolling\r\n    // our fake cursor out of view. On webkit, when wrap=off, paste is\r\n    // very slow. So make the area wide instead.\r\n    if (webkit) te.style.width = \"1000px\";\r\n    else te.setAttribute(\"wrap\", \"off\");\r\n    // If border: 0; -- iOS fails to open keyboard (issue #1287)\r\n    if (ios) te.style.border = \"1px solid black\";\r\n    disableBrowserMagic(te);\r\n    return div;\r\n  }\r\n\r\n  TextareaInput.prototype = copyObj({\r\n    init: function(display) {\r\n      var input = this, cm = this.cm;\r\n\r\n      // Wraps and hides input textarea\r\n      var div = this.wrapper = hiddenTextarea();\r\n      // The semihidden textarea that is focused when the editor is\r\n      // focused, and receives input.\r\n      var te = this.textarea = div.firstChild;\r\n      display.wrapper.insertBefore(div, display.wrapper.firstChild);\r\n\r\n      // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)\r\n      if (ios) te.style.width = \"0px\";\r\n\r\n      on(te, \"input\", function() {\r\n        if (ie && ie_version >= 9 && input.hasSelection) input.hasSelection = null;\r\n        input.poll();\r\n      });\r\n\r\n      on(te, \"paste\", function(e) {\r\n        if (handlePaste(e, cm)) return true;\r\n\r\n        cm.state.pasteIncoming = true;\r\n        input.fastPoll();\r\n      });\r\n\r\n      function prepareCopyCut(e) {\r\n        if (cm.somethingSelected()) {\r\n          lastCopied = cm.getSelections();\r\n          if (input.inaccurateSelection) {\r\n            input.prevInput = \"\";\r\n            input.inaccurateSelection = false;\r\n            te.value = lastCopied.join(\"\\n\");\r\n            selectInput(te);\r\n          }\r\n        } else if (!cm.options.lineWiseCopyCut) {\r\n          return;\r\n        } else {\r\n          var ranges = copyableRanges(cm);\r\n          lastCopied = ranges.text;\r\n          if (e.type == \"cut\") {\r\n            cm.setSelections(ranges.ranges, null, sel_dontScroll);\r\n          } else {\r\n            input.prevInput = \"\";\r\n            te.value = ranges.text.join(\"\\n\");\r\n            selectInput(te);\r\n          }\r\n        }\r\n        if (e.type == \"cut\") cm.state.cutIncoming = true;\r\n      }\r\n      on(te, \"cut\", prepareCopyCut);\r\n      on(te, \"copy\", prepareCopyCut);\r\n\r\n      on(display.scroller, \"paste\", function(e) {\r\n        if (eventInWidget(display, e)) return;\r\n        cm.state.pasteIncoming = true;\r\n        input.focus();\r\n      });\r\n\r\n      // Prevent normal selection in the editor (we handle our own)\r\n      on(display.lineSpace, \"selectstart\", function(e) {\r\n        if (!eventInWidget(display, e)) e_preventDefault(e);\r\n      });\r\n\r\n      on(te, \"compositionstart\", function() {\r\n        var start = cm.getCursor(\"from\");\r\n        if (input.composing) input.composing.range.clear()\r\n        input.composing = {\r\n          start: start,\r\n          range: cm.markText(start, cm.getCursor(\"to\"), {className: \"CodeMirror-composing\"})\r\n        };\r\n      });\r\n      on(te, \"compositionend\", function() {\r\n        if (input.composing) {\r\n          input.poll();\r\n          input.composing.range.clear();\r\n          input.composing = null;\r\n        }\r\n      });\r\n    },\r\n\r\n    prepareSelection: function() {\r\n      // Redraw the selection and/or cursor\r\n      var cm = this.cm, display = cm.display, doc = cm.doc;\r\n      var result = prepareSelection(cm);\r\n\r\n      // Move the hidden textarea near the cursor to prevent scrolling artifacts\r\n      if (cm.options.moveInputWithCursor) {\r\n        var headPos = cursorCoords(cm, doc.sel.primary().head, \"div\");\r\n        var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();\r\n        result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,\r\n                                            headPos.top + lineOff.top - wrapOff.top));\r\n        result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,\r\n                                             headPos.left + lineOff.left - wrapOff.left));\r\n      }\r\n\r\n      return result;\r\n    },\r\n\r\n    showSelection: function(drawn) {\r\n      var cm = this.cm, display = cm.display;\r\n      removeChildrenAndAdd(display.cursorDiv, drawn.cursors);\r\n      removeChildrenAndAdd(display.selectionDiv, drawn.selection);\r\n      if (drawn.teTop != null) {\r\n        this.wrapper.style.top = drawn.teTop + \"px\";\r\n        this.wrapper.style.left = drawn.teLeft + \"px\";\r\n      }\r\n    },\r\n\r\n    // Reset the input to correspond to the selection (or to be empty,\r\n    // when not typing and nothing is selected)\r\n    reset: function(typing) {\r\n      if (this.contextMenuPending) return;\r\n      var minimal, selected, cm = this.cm, doc = cm.doc;\r\n      if (cm.somethingSelected()) {\r\n        this.prevInput = \"\";\r\n        var range = doc.sel.primary();\r\n        minimal = hasCopyEvent &&\r\n          (range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000);\r\n        var content = minimal ? \"-\" : selected || cm.getSelection();\r\n        this.textarea.value = content;\r\n        if (cm.state.focused) selectInput(this.textarea);\r\n        if (ie && ie_version >= 9) this.hasSelection = content;\r\n      } else if (!typing) {\r\n        this.prevInput = this.textarea.value = \"\";\r\n        if (ie && ie_version >= 9) this.hasSelection = null;\r\n      }\r\n      this.inaccurateSelection = minimal;\r\n    },\r\n\r\n    getField: function() { return this.textarea; },\r\n\r\n    supportsTouch: function() { return false; },\r\n\r\n    focus: function() {\r\n      if (this.cm.options.readOnly != \"nocursor\" && (!mobile || activeElt() != this.textarea)) {\r\n        try { this.textarea.focus(); }\r\n        catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM\r\n      }\r\n    },\r\n\r\n    blur: function() { this.textarea.blur(); },\r\n\r\n    resetPosition: function() {\r\n      this.wrapper.style.top = this.wrapper.style.left = 0;\r\n    },\r\n\r\n    receivedFocus: function() { this.slowPoll(); },\r\n\r\n    // Poll for input changes, using the normal rate of polling. This\r\n    // runs as long as the editor is focused.\r\n    slowPoll: function() {\r\n      var input = this;\r\n      if (input.pollingFast) return;\r\n      input.polling.set(this.cm.options.pollInterval, function() {\r\n        input.poll();\r\n        if (input.cm.state.focused) input.slowPoll();\r\n      });\r\n    },\r\n\r\n    // When an event has just come in that is likely to add or change\r\n    // something in the input textarea, we poll faster, to ensure that\r\n    // the change appears on the screen quickly.\r\n    fastPoll: function() {\r\n      var missed = false, input = this;\r\n      input.pollingFast = true;\r\n      function p() {\r\n        var changed = input.poll();\r\n        if (!changed && !missed) {missed = true; input.polling.set(60, p);}\r\n        else {input.pollingFast = false; input.slowPoll();}\r\n      }\r\n      input.polling.set(20, p);\r\n    },\r\n\r\n    // Read input from the textarea, and update the document to match.\r\n    // When something is selected, it is present in the textarea, and\r\n    // selected (unless it is huge, in which case a placeholder is\r\n    // used). When nothing is selected, the cursor sits after previously\r\n    // seen text (can be empty), which is stored in prevInput (we must\r\n    // not reset the textarea when typing, because that breaks IME).\r\n    poll: function() {\r\n      var cm = this.cm, input = this.textarea, prevInput = this.prevInput;\r\n      // Since this is called a *lot*, try to bail out as cheaply as\r\n      // possible when it is clear that nothing happened. hasSelection\r\n      // will be the case when there is a lot of text in the textarea,\r\n      // in which case reading its value would be expensive.\r\n      if (this.contextMenuPending || !cm.state.focused ||\r\n          (hasSelection(input) && !prevInput && !this.composing) ||\r\n          isReadOnly(cm) || cm.options.disableInput || cm.state.keySeq)\r\n        return false;\r\n\r\n      var text = input.value;\r\n      // If nothing changed, bail.\r\n      if (text == prevInput && !cm.somethingSelected()) return false;\r\n      // Work around nonsensical selection resetting in IE9/10, and\r\n      // inexplicable appearance of private area unicode characters on\r\n      // some key combos in Mac (#2689).\r\n      if (ie && ie_version >= 9 && this.hasSelection === text ||\r\n          mac && /[\\uf700-\\uf7ff]/.test(text)) {\r\n        cm.display.input.reset();\r\n        return false;\r\n      }\r\n\r\n      if (cm.doc.sel == cm.display.selForContextMenu) {\r\n        var first = text.charCodeAt(0);\r\n        if (first == 0x200b && !prevInput) prevInput = \"\\u200b\";\r\n        if (first == 0x21da) { this.reset(); return this.cm.execCommand(\"undo\"); }\r\n      }\r\n      // Find the part of the input that is actually new\r\n      var same = 0, l = Math.min(prevInput.length, text.length);\r\n      while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;\r\n\r\n      var self = this;\r\n      runInOp(cm, function() {\r\n        applyTextInput(cm, text.slice(same), prevInput.length - same,\r\n                       null, self.composing ? \"*compose\" : null);\r\n\r\n        // Don't leave long text in the textarea, since it makes further polling slow\r\n        if (text.length > 1000 || text.indexOf(\"\\n\") > -1) input.value = self.prevInput = \"\";\r\n        else self.prevInput = text;\r\n\r\n        if (self.composing) {\r\n          self.composing.range.clear();\r\n          self.composing.range = cm.markText(self.composing.start, cm.getCursor(\"to\"),\r\n                                             {className: \"CodeMirror-composing\"});\r\n        }\r\n      });\r\n      return true;\r\n    },\r\n\r\n    ensurePolled: function() {\r\n      if (this.pollingFast && this.poll()) this.pollingFast = false;\r\n    },\r\n\r\n    onKeyPress: function() {\r\n      if (ie && ie_version >= 9) this.hasSelection = null;\r\n      this.fastPoll();\r\n    },\r\n\r\n    onContextMenu: function(e) {\r\n      var input = this, cm = input.cm, display = cm.display, te = input.textarea;\r\n      var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;\r\n      if (!pos || presto) return; // Opera is difficult.\r\n\r\n      // Reset the current text selection only if the click is done outside of the selection\r\n      // and 'resetSelectionOnContextMenu' option is true.\r\n      var reset = cm.options.resetSelectionOnContextMenu;\r\n      if (reset && cm.doc.sel.contains(pos) == -1)\r\n        operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll);\r\n\r\n      var oldCSS = te.style.cssText;\r\n      input.wrapper.style.position = \"absolute\";\r\n      te.style.cssText = \"position: fixed; width: 30px; height: 30px; top: \" + (e.clientY - 5) +\r\n        \"px; left: \" + (e.clientX - 5) + \"px; z-index: 1000; background: \" +\r\n        (ie ? \"rgba(255, 255, 255, .05)\" : \"transparent\") +\r\n        \"; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);\";\r\n      if (webkit) var oldScrollY = window.scrollY; // Work around Chrome issue (#2712)\r\n      display.input.focus();\r\n      if (webkit) window.scrollTo(null, oldScrollY);\r\n      display.input.reset();\r\n      // Adds \"Select all\" to context menu in FF\r\n      if (!cm.somethingSelected()) te.value = input.prevInput = \" \";\r\n      input.contextMenuPending = true;\r\n      display.selForContextMenu = cm.doc.sel;\r\n      clearTimeout(display.detectingSelectAll);\r\n\r\n      // Select-all will be greyed out if there's nothing to select, so\r\n      // this adds a zero-width space so that we can later check whether\r\n      // it got selected.\r\n      function prepareSelectAllHack() {\r\n        if (te.selectionStart != null) {\r\n          var selected = cm.somethingSelected();\r\n          var extval = \"\\u200b\" + (selected ? te.value : \"\");\r\n          te.value = \"\\u21da\"; // Used to catch context-menu undo\r\n          te.value = extval;\r\n          input.prevInput = selected ? \"\" : \"\\u200b\";\r\n          te.selectionStart = 1; te.selectionEnd = extval.length;\r\n          // Re-set this, in case some other handler touched the\r\n          // selection in the meantime.\r\n          display.selForContextMenu = cm.doc.sel;\r\n        }\r\n      }\r\n      function rehide() {\r\n        input.contextMenuPending = false;\r\n        input.wrapper.style.position = \"relative\";\r\n        te.style.cssText = oldCSS;\r\n        if (ie && ie_version < 9) display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos);\r\n\r\n        // Try to detect the user choosing select-all\r\n        if (te.selectionStart != null) {\r\n          if (!ie || (ie && ie_version < 9)) prepareSelectAllHack();\r\n          var i = 0, poll = function() {\r\n            if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&\r\n                te.selectionEnd > 0 && input.prevInput == \"\\u200b\")\r\n              operation(cm, commands.selectAll)(cm);\r\n            else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500);\r\n            else display.input.reset();\r\n          };\r\n          display.detectingSelectAll = setTimeout(poll, 200);\r\n        }\r\n      }\r\n\r\n      if (ie && ie_version >= 9) prepareSelectAllHack();\r\n      if (captureRightClick) {\r\n        e_stop(e);\r\n        var mouseup = function() {\r\n          off(window, \"mouseup\", mouseup);\r\n          setTimeout(rehide, 20);\r\n        };\r\n        on(window, \"mouseup\", mouseup);\r\n      } else {\r\n        setTimeout(rehide, 50);\r\n      }\r\n    },\r\n\r\n    readOnlyChanged: function(val) {\r\n      if (!val) this.reset();\r\n    },\r\n\r\n    setUneditable: nothing,\r\n\r\n    needsContentAttribute: false\r\n  }, TextareaInput.prototype);\r\n\r\n  // CONTENTEDITABLE INPUT STYLE\r\n\r\n  function ContentEditableInput(cm) {\r\n    this.cm = cm;\r\n    this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;\r\n    this.polling = new Delayed();\r\n    this.gracePeriod = false;\r\n  }\r\n\r\n  ContentEditableInput.prototype = copyObj({\r\n    init: function(display) {\r\n      var input = this, cm = input.cm;\r\n      var div = input.div = display.lineDiv;\r\n      disableBrowserMagic(div);\r\n\r\n      on(div, \"paste\", function(e) { handlePaste(e, cm); })\r\n\r\n      on(div, \"compositionstart\", function(e) {\r\n        var data = e.data;\r\n        input.composing = {sel: cm.doc.sel, data: data, startData: data};\r\n        if (!data) return;\r\n        var prim = cm.doc.sel.primary();\r\n        var line = cm.getLine(prim.head.line);\r\n        var found = line.indexOf(data, Math.max(0, prim.head.ch - data.length));\r\n        if (found > -1 && found <= prim.head.ch)\r\n          input.composing.sel = simpleSelection(Pos(prim.head.line, found),\r\n                                                Pos(prim.head.line, found + data.length));\r\n      });\r\n      on(div, \"compositionupdate\", function(e) {\r\n        input.composing.data = e.data;\r\n      });\r\n      on(div, \"compositionend\", function(e) {\r\n        var ours = input.composing;\r\n        if (!ours) return;\r\n        if (e.data != ours.startData && !/\\u200b/.test(e.data))\r\n          ours.data = e.data;\r\n        // Need a small delay to prevent other code (input event,\r\n        // selection polling) from doing damage when fired right after\r\n        // compositionend.\r\n        setTimeout(function() {\r\n          if (!ours.handled)\r\n            input.applyComposition(ours);\r\n          if (input.composing == ours)\r\n            input.composing = null;\r\n        }, 50);\r\n      });\r\n\r\n      on(div, \"touchstart\", function() {\r\n        input.forceCompositionEnd();\r\n      });\r\n\r\n      on(div, \"input\", function() {\r\n        if (input.composing) return;\r\n        if (isReadOnly(cm) || !input.pollContent())\r\n          runInOp(input.cm, function() {regChange(cm);});\r\n      });\r\n\r\n      function onCopyCut(e) {\r\n        if (cm.somethingSelected()) {\r\n          lastCopied = cm.getSelections();\r\n          if (e.type == \"cut\") cm.replaceSelection(\"\", null, \"cut\");\r\n        } else if (!cm.options.lineWiseCopyCut) {\r\n          return;\r\n        } else {\r\n          var ranges = copyableRanges(cm);\r\n          lastCopied = ranges.text;\r\n          if (e.type == \"cut\") {\r\n            cm.operation(function() {\r\n              cm.setSelections(ranges.ranges, 0, sel_dontScroll);\r\n              cm.replaceSelection(\"\", null, \"cut\");\r\n            });\r\n          }\r\n        }\r\n        // iOS exposes the clipboard API, but seems to discard content inserted into it\r\n        if (e.clipboardData && !ios) {\r\n          e.preventDefault();\r\n          e.clipboardData.clearData();\r\n          e.clipboardData.setData(\"text/plain\", lastCopied.join(\"\\n\"));\r\n        } else {\r\n          // Old-fashioned briefly-focus-a-textarea hack\r\n          var kludge = hiddenTextarea(), te = kludge.firstChild;\r\n          cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);\r\n          te.value = lastCopied.join(\"\\n\");\r\n          var hadFocus = document.activeElement;\r\n          selectInput(te);\r\n          setTimeout(function() {\r\n            cm.display.lineSpace.removeChild(kludge);\r\n            hadFocus.focus();\r\n          }, 50);\r\n        }\r\n      }\r\n      on(div, \"copy\", onCopyCut);\r\n      on(div, \"cut\", onCopyCut);\r\n    },\r\n\r\n    prepareSelection: function() {\r\n      var result = prepareSelection(this.cm, false);\r\n      result.focus = this.cm.state.focused;\r\n      return result;\r\n    },\r\n\r\n    showSelection: function(info) {\r\n      if (!info || !this.cm.display.view.length) return;\r\n      if (info.focus) this.showPrimarySelection();\r\n      this.showMultipleSelections(info);\r\n    },\r\n\r\n    showPrimarySelection: function() {\r\n      var sel = window.getSelection(), prim = this.cm.doc.sel.primary();\r\n      var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset);\r\n      var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset);\r\n      if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&\r\n          cmp(minPos(curAnchor, curFocus), prim.from()) == 0 &&\r\n          cmp(maxPos(curAnchor, curFocus), prim.to()) == 0)\r\n        return;\r\n\r\n      var start = posToDOM(this.cm, prim.from());\r\n      var end = posToDOM(this.cm, prim.to());\r\n      if (!start && !end) return;\r\n\r\n      var view = this.cm.display.view;\r\n      var old = sel.rangeCount && sel.getRangeAt(0);\r\n      if (!start) {\r\n        start = {node: view[0].measure.map[2], offset: 0};\r\n      } else if (!end) { // FIXME dangerously hacky\r\n        var measure = view[view.length - 1].measure;\r\n        var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;\r\n        end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]};\r\n      }\r\n\r\n      try { var rng = range(start.node, start.offset, end.offset, end.node); }\r\n      catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible\r\n      if (rng) {\r\n        sel.removeAllRanges();\r\n        sel.addRange(rng);\r\n        if (old && sel.anchorNode == null) sel.addRange(old);\r\n        else if (gecko) this.startGracePeriod();\r\n      }\r\n      this.rememberSelection();\r\n    },\r\n\r\n    startGracePeriod: function() {\r\n      var input = this;\r\n      clearTimeout(this.gracePeriod);\r\n      this.gracePeriod = setTimeout(function() {\r\n        input.gracePeriod = false;\r\n        if (input.selectionChanged())\r\n          input.cm.operation(function() { input.cm.curOp.selectionChanged = true; });\r\n      }, 20);\r\n    },\r\n\r\n    showMultipleSelections: function(info) {\r\n      removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);\r\n      removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);\r\n    },\r\n\r\n    rememberSelection: function() {\r\n      var sel = window.getSelection();\r\n      this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset;\r\n      this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset;\r\n    },\r\n\r\n    selectionInEditor: function() {\r\n      var sel = window.getSelection();\r\n      if (!sel.rangeCount) return false;\r\n      var node = sel.getRangeAt(0).commonAncestorContainer;\r\n      return contains(this.div, node);\r\n    },\r\n\r\n    focus: function() {\r\n      if (this.cm.options.readOnly != \"nocursor\") this.div.focus();\r\n    },\r\n    blur: function() { this.div.blur(); },\r\n    getField: function() { return this.div; },\r\n\r\n    supportsTouch: function() { return true; },\r\n\r\n    receivedFocus: function() {\r\n      var input = this;\r\n      if (this.selectionInEditor())\r\n        this.pollSelection();\r\n      else\r\n        runInOp(this.cm, function() { input.cm.curOp.selectionChanged = true; });\r\n\r\n      function poll() {\r\n        if (input.cm.state.focused) {\r\n          input.pollSelection();\r\n          input.polling.set(input.cm.options.pollInterval, poll);\r\n        }\r\n      }\r\n      this.polling.set(this.cm.options.pollInterval, poll);\r\n    },\r\n\r\n    selectionChanged: function() {\r\n      var sel = window.getSelection();\r\n      return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||\r\n        sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset;\r\n    },\r\n\r\n    pollSelection: function() {\r\n      if (!this.composing && !this.gracePeriod && this.selectionChanged()) {\r\n        var sel = window.getSelection(), cm = this.cm;\r\n        this.rememberSelection();\r\n        var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);\r\n        var head = domToPos(cm, sel.focusNode, sel.focusOffset);\r\n        if (anchor && head) runInOp(cm, function() {\r\n          setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);\r\n          if (anchor.bad || head.bad) cm.curOp.selectionChanged = true;\r\n        });\r\n      }\r\n    },\r\n\r\n    pollContent: function() {\r\n      var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary();\r\n      var from = sel.from(), to = sel.to();\r\n      if (from.line < display.viewFrom || to.line > display.viewTo - 1) return false;\r\n\r\n      var fromIndex;\r\n      if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {\r\n        var fromLine = lineNo(display.view[0].line);\r\n        var fromNode = display.view[0].node;\r\n      } else {\r\n        var fromLine = lineNo(display.view[fromIndex].line);\r\n        var fromNode = display.view[fromIndex - 1].node.nextSibling;\r\n      }\r\n      var toIndex = findViewIndex(cm, to.line);\r\n      if (toIndex == display.view.length - 1) {\r\n        var toLine = display.viewTo - 1;\r\n        var toNode = display.lineDiv.lastChild;\r\n      } else {\r\n        var toLine = lineNo(display.view[toIndex + 1].line) - 1;\r\n        var toNode = display.view[toIndex + 1].node.previousSibling;\r\n      }\r\n\r\n      var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));\r\n      var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));\r\n      while (newText.length > 1 && oldText.length > 1) {\r\n        if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; }\r\n        else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; }\r\n        else break;\r\n      }\r\n\r\n      var cutFront = 0, cutEnd = 0;\r\n      var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length);\r\n      while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront))\r\n        ++cutFront;\r\n      var newBot = lst(newText), oldBot = lst(oldText);\r\n      var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),\r\n                               oldBot.length - (oldText.length == 1 ? cutFront : 0));\r\n      while (cutEnd < maxCutEnd &&\r\n             newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1))\r\n        ++cutEnd;\r\n\r\n      newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd);\r\n      newText[0] = newText[0].slice(cutFront);\r\n\r\n      var chFrom = Pos(fromLine, cutFront);\r\n      var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);\r\n      if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {\r\n        replaceRange(cm.doc, newText, chFrom, chTo, \"+input\");\r\n        return true;\r\n      }\r\n    },\r\n\r\n    ensurePolled: function() {\r\n      this.forceCompositionEnd();\r\n    },\r\n    reset: function() {\r\n      this.forceCompositionEnd();\r\n    },\r\n    forceCompositionEnd: function() {\r\n      if (!this.composing || this.composing.handled) return;\r\n      this.applyComposition(this.composing);\r\n      this.composing.handled = true;\r\n      this.div.blur();\r\n      this.div.focus();\r\n    },\r\n    applyComposition: function(composing) {\r\n      if (isReadOnly(this.cm))\r\n        operation(this.cm, regChange)(this.cm)\r\n      else if (composing.data && composing.data != composing.startData)\r\n        operation(this.cm, applyTextInput)(this.cm, composing.data, 0, composing.sel);\r\n    },\r\n\r\n    setUneditable: function(node) {\r\n      node.contentEditable = \"false\"\r\n    },\r\n\r\n    onKeyPress: function(e) {\r\n      e.preventDefault();\r\n      if (!isReadOnly(this.cm))\r\n        operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0);\r\n    },\r\n\r\n    readOnlyChanged: function(val) {\r\n      this.div.contentEditable = String(val != \"nocursor\")\r\n    },\r\n\r\n    onContextMenu: nothing,\r\n    resetPosition: nothing,\r\n\r\n    needsContentAttribute: true\r\n  }, ContentEditableInput.prototype);\r\n\r\n  function posToDOM(cm, pos) {\r\n    var view = findViewForLine(cm, pos.line);\r\n    if (!view || view.hidden) return null;\r\n    var line = getLine(cm.doc, pos.line);\r\n    var info = mapFromLineView(view, line, pos.line);\r\n\r\n    var order = getOrder(line), side = \"left\";\r\n    if (order) {\r\n      var partPos = getBidiPartAt(order, pos.ch);\r\n      side = partPos % 2 ? \"right\" : \"left\";\r\n    }\r\n    var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);\r\n    result.offset = result.collapse == \"right\" ? result.end : result.start;\r\n    return result;\r\n  }\r\n\r\n  function badPos(pos, bad) { if (bad) pos.bad = true; return pos; }\r\n\r\n  function domToPos(cm, node, offset) {\r\n    var lineNode;\r\n    if (node == cm.display.lineDiv) {\r\n      lineNode = cm.display.lineDiv.childNodes[offset];\r\n      if (!lineNode) return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true);\r\n      node = null; offset = 0;\r\n    } else {\r\n      for (lineNode = node;; lineNode = lineNode.parentNode) {\r\n        if (!lineNode || lineNode == cm.display.lineDiv) return null;\r\n        if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) break;\r\n      }\r\n    }\r\n    for (var i = 0; i < cm.display.view.length; i++) {\r\n      var lineView = cm.display.view[i];\r\n      if (lineView.node == lineNode)\r\n        return locateNodeInLineView(lineView, node, offset);\r\n    }\r\n  }\r\n\r\n  function locateNodeInLineView(lineView, node, offset) {\r\n    var wrapper = lineView.text.firstChild, bad = false;\r\n    if (!node || !contains(wrapper, node)) return badPos(Pos(lineNo(lineView.line), 0), true);\r\n    if (node == wrapper) {\r\n      bad = true;\r\n      node = wrapper.childNodes[offset];\r\n      offset = 0;\r\n      if (!node) {\r\n        var line = lineView.rest ? lst(lineView.rest) : lineView.line;\r\n        return badPos(Pos(lineNo(line), line.text.length), bad);\r\n      }\r\n    }\r\n\r\n    var textNode = node.nodeType == 3 ? node : null, topNode = node;\r\n    if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {\r\n      textNode = node.firstChild;\r\n      if (offset) offset = textNode.nodeValue.length;\r\n    }\r\n    while (topNode.parentNode != wrapper) topNode = topNode.parentNode;\r\n    var measure = lineView.measure, maps = measure.maps;\r\n\r\n    function find(textNode, topNode, offset) {\r\n      for (var i = -1; i < (maps ? maps.length : 0); i++) {\r\n        var map = i < 0 ? measure.map : maps[i];\r\n        for (var j = 0; j < map.length; j += 3) {\r\n          var curNode = map[j + 2];\r\n          if (curNode == textNode || curNode == topNode) {\r\n            var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);\r\n            var ch = map[j] + offset;\r\n            if (offset < 0 || curNode != textNode) ch = map[j + (offset ? 1 : 0)];\r\n            return Pos(line, ch);\r\n          }\r\n        }\r\n      }\r\n    }\r\n    var found = find(textNode, topNode, offset);\r\n    if (found) return badPos(found, bad);\r\n\r\n    // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems\r\n    for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {\r\n      found = find(after, after.firstChild, 0);\r\n      if (found)\r\n        return badPos(Pos(found.line, found.ch - dist), bad);\r\n      else\r\n        dist += after.textContent.length;\r\n    }\r\n    for (var before = topNode.previousSibling, dist = offset; before; before = before.previousSibling) {\r\n      found = find(before, before.firstChild, -1);\r\n      if (found)\r\n        return badPos(Pos(found.line, found.ch + dist), bad);\r\n      else\r\n        dist += after.textContent.length;\r\n    }\r\n  }\r\n\r\n  function domTextBetween(cm, from, to, fromLine, toLine) {\r\n    var text = \"\", closing = false, lineSep = cm.doc.lineSeparator();\r\n    function recognizeMarker(id) { return function(marker) { return marker.id == id; }; }\r\n    function walk(node) {\r\n      if (node.nodeType == 1) {\r\n        var cmText = node.getAttribute(\"cm-text\");\r\n        if (cmText != null) {\r\n          if (cmText == \"\") cmText = node.textContent.replace(/\\u200b/g, \"\");\r\n          text += cmText;\r\n          return;\r\n        }\r\n        var markerID = node.getAttribute(\"cm-marker\"), range;\r\n        if (markerID) {\r\n          var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));\r\n          if (found.length && (range = found[0].find()))\r\n            text += getBetween(cm.doc, range.from, range.to).join(lineSep);\r\n          return;\r\n        }\r\n        if (node.getAttribute(\"contenteditable\") == \"false\") return;\r\n        for (var i = 0; i < node.childNodes.length; i++)\r\n          walk(node.childNodes[i]);\r\n        if (/^(pre|div|p)$/i.test(node.nodeName))\r\n          closing = true;\r\n      } else if (node.nodeType == 3) {\r\n        var val = node.nodeValue;\r\n        if (!val) return;\r\n        if (closing) {\r\n          text += lineSep;\r\n          closing = false;\r\n        }\r\n        text += val;\r\n      }\r\n    }\r\n    for (;;) {\r\n      walk(from);\r\n      if (from == to) break;\r\n      from = from.nextSibling;\r\n    }\r\n    return text;\r\n  }\r\n\r\n  CodeMirror.inputStyles = {\"textarea\": TextareaInput, \"contenteditable\": ContentEditableInput};\r\n\r\n  // SELECTION / CURSOR\r\n\r\n  // Selection objects are immutable. A new one is created every time\r\n  // the selection changes. A selection is one or more non-overlapping\r\n  // (and non-touching) ranges, sorted, and an integer that indicates\r\n  // which one is the primary selection (the one that's scrolled into\r\n  // view, that getCursor returns, etc).\r\n  function Selection(ranges, primIndex) {\r\n    this.ranges = ranges;\r\n    this.primIndex = primIndex;\r\n  }\r\n\r\n  Selection.prototype = {\r\n    primary: function() { return this.ranges[this.primIndex]; },\r\n    equals: function(other) {\r\n      if (other == this) return true;\r\n      if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false;\r\n      for (var i = 0; i < this.ranges.length; i++) {\r\n        var here = this.ranges[i], there = other.ranges[i];\r\n        if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false;\r\n      }\r\n      return true;\r\n    },\r\n    deepCopy: function() {\r\n      for (var out = [], i = 0; i < this.ranges.length; i++)\r\n        out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));\r\n      return new Selection(out, this.primIndex);\r\n    },\r\n    somethingSelected: function() {\r\n      for (var i = 0; i < this.ranges.length; i++)\r\n        if (!this.ranges[i].empty()) return true;\r\n      return false;\r\n    },\r\n    contains: function(pos, end) {\r\n      if (!end) end = pos;\r\n      for (var i = 0; i < this.ranges.length; i++) {\r\n        var range = this.ranges[i];\r\n        if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)\r\n          return i;\r\n      }\r\n      return -1;\r\n    }\r\n  };\r\n\r\n  function Range(anchor, head) {\r\n    this.anchor = anchor; this.head = head;\r\n  }\r\n\r\n  Range.prototype = {\r\n    from: function() { return minPos(this.anchor, this.head); },\r\n    to: function() { return maxPos(this.anchor, this.head); },\r\n    empty: function() {\r\n      return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;\r\n    }\r\n  };\r\n\r\n  // Take an unsorted, potentially overlapping set of ranges, and\r\n  // build a selection out of it. 'Consumes' ranges array (modifying\r\n  // it).\r\n  function normalizeSelection(ranges, primIndex) {\r\n    var prim = ranges[primIndex];\r\n    ranges.sort(function(a, b) { return cmp(a.from(), b.from()); });\r\n    primIndex = indexOf(ranges, prim);\r\n    for (var i = 1; i < ranges.length; i++) {\r\n      var cur = ranges[i], prev = ranges[i - 1];\r\n      if (cmp(prev.to(), cur.from()) >= 0) {\r\n        var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());\r\n        var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;\r\n        if (i <= primIndex) --primIndex;\r\n        ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));\r\n      }\r\n    }\r\n    return new Selection(ranges, primIndex);\r\n  }\r\n\r\n  function simpleSelection(anchor, head) {\r\n    return new Selection([new Range(anchor, head || anchor)], 0);\r\n  }\r\n\r\n  // Most of the external API clips given positions to make sure they\r\n  // actually exist within the document.\r\n  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}\r\n  function clipPos(doc, pos) {\r\n    if (pos.line < doc.first) return Pos(doc.first, 0);\r\n    var last = doc.first + doc.size - 1;\r\n    if (pos.line > last) return Pos(last, getLine(doc, last).text.length);\r\n    return clipToLen(pos, getLine(doc, pos.line).text.length);\r\n  }\r\n  function clipToLen(pos, linelen) {\r\n    var ch = pos.ch;\r\n    if (ch == null || ch > linelen) return Pos(pos.line, linelen);\r\n    else if (ch < 0) return Pos(pos.line, 0);\r\n    else return pos;\r\n  }\r\n  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}\r\n  function clipPosArray(doc, array) {\r\n    for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]);\r\n    return out;\r\n  }\r\n\r\n  // SELECTION UPDATES\r\n\r\n  // The 'scroll' parameter given to many of these indicated whether\r\n  // the new cursor position should be scrolled into view after\r\n  // modifying the selection.\r\n\r\n  // If shift is held or the extend flag is set, extends a range to\r\n  // include a given position (and optionally a second position).\r\n  // Otherwise, simply returns the range between the given positions.\r\n  // Used for cursor motion and such.\r\n  function extendRange(doc, range, head, other) {\r\n    if (doc.cm && doc.cm.display.shift || doc.extend) {\r\n      var anchor = range.anchor;\r\n      if (other) {\r\n        var posBefore = cmp(head, anchor) < 0;\r\n        if (posBefore != (cmp(other, anchor) < 0)) {\r\n          anchor = head;\r\n          head = other;\r\n        } else if (posBefore != (cmp(head, other) < 0)) {\r\n          head = other;\r\n        }\r\n      }\r\n      return new Range(anchor, head);\r\n    } else {\r\n      return new Range(other || head, head);\r\n    }\r\n  }\r\n\r\n  // Extend the primary selection range, discard the rest.\r\n  function extendSelection(doc, head, other, options) {\r\n    setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);\r\n  }\r\n\r\n  // Extend all selections (pos is an array of selections with length\r\n  // equal the number of selections)\r\n  function extendSelections(doc, heads, options) {\r\n    for (var out = [], i = 0; i < doc.sel.ranges.length; i++)\r\n      out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);\r\n    var newSel = normalizeSelection(out, doc.sel.primIndex);\r\n    setSelection(doc, newSel, options);\r\n  }\r\n\r\n  // Updates a single range in the selection.\r\n  function replaceOneSelection(doc, i, range, options) {\r\n    var ranges = doc.sel.ranges.slice(0);\r\n    ranges[i] = range;\r\n    setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);\r\n  }\r\n\r\n  // Reset the selection to a single range.\r\n  function setSimpleSelection(doc, anchor, head, options) {\r\n    setSelection(doc, simpleSelection(anchor, head), options);\r\n  }\r\n\r\n  // Give beforeSelectionChange handlers a change to influence a\r\n  // selection update.\r\n  function filterSelectionChange(doc, sel) {\r\n    var obj = {\r\n      ranges: sel.ranges,\r\n      update: function(ranges) {\r\n        this.ranges = [];\r\n        for (var i = 0; i < ranges.length; i++)\r\n          this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),\r\n                                     clipPos(doc, ranges[i].head));\r\n      }\r\n    };\r\n    signal(doc, \"beforeSelectionChange\", doc, obj);\r\n    if (doc.cm) signal(doc.cm, \"beforeSelectionChange\", doc.cm, obj);\r\n    if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1);\r\n    else return sel;\r\n  }\r\n\r\n  function setSelectionReplaceHistory(doc, sel, options) {\r\n    var done = doc.history.done, last = lst(done);\r\n    if (last && last.ranges) {\r\n      done[done.length - 1] = sel;\r\n      setSelectionNoUndo(doc, sel, options);\r\n    } else {\r\n      setSelection(doc, sel, options);\r\n    }\r\n  }\r\n\r\n  // Set a new selection.\r\n  function setSelection(doc, sel, options) {\r\n    setSelectionNoUndo(doc, sel, options);\r\n    addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);\r\n  }\r\n\r\n  function setSelectionNoUndo(doc, sel, options) {\r\n    if (hasHandler(doc, \"beforeSelectionChange\") || doc.cm && hasHandler(doc.cm, \"beforeSelectionChange\"))\r\n      sel = filterSelectionChange(doc, sel);\r\n\r\n    var bias = options && options.bias ||\r\n      (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);\r\n    setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));\r\n\r\n    if (!(options && options.scroll === false) && doc.cm)\r\n      ensureCursorVisible(doc.cm);\r\n  }\r\n\r\n  function setSelectionInner(doc, sel) {\r\n    if (sel.equals(doc.sel)) return;\r\n\r\n    doc.sel = sel;\r\n\r\n    if (doc.cm) {\r\n      doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true;\r\n      signalCursorActivity(doc.cm);\r\n    }\r\n    signalLater(doc, \"cursorActivity\", doc);\r\n  }\r\n\r\n  // Verify that the selection does not partially select any atomic\r\n  // marked ranges.\r\n  function reCheckSelection(doc) {\r\n    setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll);\r\n  }\r\n\r\n  // Return a selection that does not partially select any atomic\r\n  // ranges.\r\n  function skipAtomicInSelection(doc, sel, bias, mayClear) {\r\n    var out;\r\n    for (var i = 0; i < sel.ranges.length; i++) {\r\n      var range = sel.ranges[i];\r\n      var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i];\r\n      var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear);\r\n      var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear);\r\n      if (out || newAnchor != range.anchor || newHead != range.head) {\r\n        if (!out) out = sel.ranges.slice(0, i);\r\n        out[i] = new Range(newAnchor, newHead);\r\n      }\r\n    }\r\n    return out ? normalizeSelection(out, sel.primIndex) : sel;\r\n  }\r\n\r\n  function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {\r\n    var line = getLine(doc, pos.line);\r\n    if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {\r\n      var sp = line.markedSpans[i], m = sp.marker;\r\n      if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&\r\n          (sp.to == null || (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) {\r\n        if (mayClear) {\r\n          signal(m, \"beforeCursorEnter\");\r\n          if (m.explicitlyCleared) {\r\n            if (!line.markedSpans) break;\r\n            else {--i; continue;}\r\n          }\r\n        }\r\n        if (!m.atomic) continue;\r\n\r\n        if (oldPos) {\r\n          var near = m.find(dir < 0 ? 1 : -1), diff;\r\n          if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft) near = movePos(doc, near, -dir, line);\r\n          if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))\r\n            return skipAtomicInner(doc, near, pos, dir, mayClear);\r\n        }\r\n\r\n        var far = m.find(dir < 0 ? -1 : 1);\r\n        if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight) far = movePos(doc, far, dir, line);\r\n        return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null;\r\n      }\r\n    }\r\n    return pos;\r\n  }\r\n\r\n  // Ensure a given position is not inside an atomic range.\r\n  function skipAtomic(doc, pos, oldPos, bias, mayClear) {\r\n    var dir = bias || 1;\r\n    var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||\r\n        (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||\r\n        skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||\r\n        (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true));\r\n    if (!found) {\r\n      doc.cantEdit = true;\r\n      return Pos(doc.first, 0);\r\n    }\r\n    return found;\r\n  }\r\n\r\n  function movePos(doc, pos, dir, line) {\r\n    if (dir < 0 && pos.ch == 0) {\r\n      if (pos.line > doc.first) return clipPos(doc, Pos(pos.line - 1));\r\n      else return null;\r\n    } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {\r\n      if (pos.line < doc.first + doc.size - 1) return Pos(pos.line + 1, 0);\r\n      else return null;\r\n    } else {\r\n      return new Pos(pos.line, pos.ch + dir);\r\n    }\r\n  }\r\n\r\n  // SELECTION DRAWING\r\n\r\n  function updateSelection(cm) {\r\n    cm.display.input.showSelection(cm.display.input.prepareSelection());\r\n  }\r\n\r\n  function prepareSelection(cm, primary) {\r\n    var doc = cm.doc, result = {};\r\n    var curFragment = result.cursors = document.createDocumentFragment();\r\n    var selFragment = result.selection = document.createDocumentFragment();\r\n\r\n    for (var i = 0; i < doc.sel.ranges.length; i++) {\r\n      if (primary === false && i == doc.sel.primIndex) continue;\r\n      var range = doc.sel.ranges[i];\r\n      var collapsed = range.empty();\r\n      if (collapsed || cm.options.showCursorWhenSelecting)\r\n        drawSelectionCursor(cm, range.head, curFragment);\r\n      if (!collapsed)\r\n        drawSelectionRange(cm, range, selFragment);\r\n    }\r\n    return result;\r\n  }\r\n\r\n  // Draws a cursor for the given range\r\n  function drawSelectionCursor(cm, head, output) {\r\n    var pos = cursorCoords(cm, head, \"div\", null, null, !cm.options.singleCursorHeightPerLine);\r\n\r\n    var cursor = output.appendChild(elt(\"div\", \"\\u00a0\", \"CodeMirror-cursor\"));\r\n    cursor.style.left = pos.left + \"px\";\r\n    cursor.style.top = pos.top + \"px\";\r\n    cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + \"px\";\r\n\r\n    if (pos.other) {\r\n      // Secondary cursor, shown when on a 'jump' in bi-directional text\r\n      var otherCursor = output.appendChild(elt(\"div\", \"\\u00a0\", \"CodeMirror-cursor CodeMirror-secondarycursor\"));\r\n      otherCursor.style.display = \"\";\r\n      otherCursor.style.left = pos.other.left + \"px\";\r\n      otherCursor.style.top = pos.other.top + \"px\";\r\n      otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + \"px\";\r\n    }\r\n  }\r\n\r\n  // Draws the given range as a highlighted selection\r\n  function drawSelectionRange(cm, range, output) {\r\n    var display = cm.display, doc = cm.doc;\r\n    var fragment = document.createDocumentFragment();\r\n    var padding = paddingH(cm.display), leftSide = padding.left;\r\n    var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;\r\n\r\n    function add(left, top, width, bottom) {\r\n      if (top < 0) top = 0;\r\n      top = Math.round(top);\r\n      bottom = Math.round(bottom);\r\n      fragment.appendChild(elt(\"div\", null, \"CodeMirror-selected\", \"position: absolute; left: \" + left +\r\n                               \"px; top: \" + top + \"px; width: \" + (width == null ? rightSide - left : width) +\r\n                               \"px; height: \" + (bottom - top) + \"px\"));\r\n    }\r\n\r\n    function drawForLine(line, fromArg, toArg) {\r\n      var lineObj = getLine(doc, line);\r\n      var lineLen = lineObj.text.length;\r\n      var start, end;\r\n      function coords(ch, bias) {\r\n        return charCoords(cm, Pos(line, ch), \"div\", lineObj, bias);\r\n      }\r\n\r\n      iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {\r\n        var leftPos = coords(from, \"left\"), rightPos, left, right;\r\n        if (from == to) {\r\n          rightPos = leftPos;\r\n          left = right = leftPos.left;\r\n        } else {\r\n          rightPos = coords(to - 1, \"right\");\r\n          if (dir == \"rtl\") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }\r\n          left = leftPos.left;\r\n          right = rightPos.right;\r\n        }\r\n        if (fromArg == null && from == 0) left = leftSide;\r\n        if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part\r\n          add(left, leftPos.top, null, leftPos.bottom);\r\n          left = leftSide;\r\n          if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);\r\n        }\r\n        if (toArg == null && to == lineLen) right = rightSide;\r\n        if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)\r\n          start = leftPos;\r\n        if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)\r\n          end = rightPos;\r\n        if (left < leftSide + 1) left = leftSide;\r\n        add(left, rightPos.top, right - left, rightPos.bottom);\r\n      });\r\n      return {start: start, end: end};\r\n    }\r\n\r\n    var sFrom = range.from(), sTo = range.to();\r\n    if (sFrom.line == sTo.line) {\r\n      drawForLine(sFrom.line, sFrom.ch, sTo.ch);\r\n    } else {\r\n      var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);\r\n      var singleVLine = visualLine(fromLine) == visualLine(toLine);\r\n      var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;\r\n      var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;\r\n      if (singleVLine) {\r\n        if (leftEnd.top < rightStart.top - 2) {\r\n          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);\r\n          add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);\r\n        } else {\r\n          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);\r\n        }\r\n      }\r\n      if (leftEnd.bottom < rightStart.top)\r\n        add(leftSide, leftEnd.bottom, null, rightStart.top);\r\n    }\r\n\r\n    output.appendChild(fragment);\r\n  }\r\n\r\n  // Cursor-blinking\r\n  function restartBlink(cm) {\r\n    if (!cm.state.focused) return;\r\n    var display = cm.display;\r\n    clearInterval(display.blinker);\r\n    var on = true;\r\n    display.cursorDiv.style.visibility = \"\";\r\n    if (cm.options.cursorBlinkRate > 0)\r\n      display.blinker = setInterval(function() {\r\n        display.cursorDiv.style.visibility = (on = !on) ? \"\" : \"hidden\";\r\n      }, cm.options.cursorBlinkRate);\r\n    else if (cm.options.cursorBlinkRate < 0)\r\n      display.cursorDiv.style.visibility = \"hidden\";\r\n  }\r\n\r\n  // HIGHLIGHT WORKER\r\n\r\n  function startWorker(cm, time) {\r\n    if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)\r\n      cm.state.highlight.set(time, bind(highlightWorker, cm));\r\n  }\r\n\r\n  function highlightWorker(cm) {\r\n    var doc = cm.doc;\r\n    if (doc.frontier < doc.first) doc.frontier = doc.first;\r\n    if (doc.frontier >= cm.display.viewTo) return;\r\n    var end = +new Date + cm.options.workTime;\r\n    var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));\r\n    var changedLines = [];\r\n\r\n    doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {\r\n      if (doc.frontier >= cm.display.viewFrom) { // Visible\r\n        var oldStyles = line.styles, tooLong = line.text.length > cm.options.maxHighlightLength;\r\n        var highlighted = highlightLine(cm, line, tooLong ? copyState(doc.mode, state) : state, true);\r\n        line.styles = highlighted.styles;\r\n        var oldCls = line.styleClasses, newCls = highlighted.classes;\r\n        if (newCls) line.styleClasses = newCls;\r\n        else if (oldCls) line.styleClasses = null;\r\n        var ischange = !oldStyles || oldStyles.length != line.styles.length ||\r\n          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);\r\n        for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];\r\n        if (ischange) changedLines.push(doc.frontier);\r\n        line.stateAfter = tooLong ? state : copyState(doc.mode, state);\r\n      } else {\r\n        if (line.text.length <= cm.options.maxHighlightLength)\r\n          processLine(cm, line.text, state);\r\n        line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;\r\n      }\r\n      ++doc.frontier;\r\n      if (+new Date > end) {\r\n        startWorker(cm, cm.options.workDelay);\r\n        return true;\r\n      }\r\n    });\r\n    if (changedLines.length) runInOp(cm, function() {\r\n      for (var i = 0; i < changedLines.length; i++)\r\n        regLineChange(cm, changedLines[i], \"text\");\r\n    });\r\n  }\r\n\r\n  // Finds the line to start with when starting a parse. Tries to\r\n  // find a line with a stateAfter, so that it can start with a\r\n  // valid state. If that fails, it returns the line with the\r\n  // smallest indentation, which tends to need the least context to\r\n  // parse correctly.\r\n  function findStartLine(cm, n, precise) {\r\n    var minindent, minline, doc = cm.doc;\r\n    var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);\r\n    for (var search = n; search > lim; --search) {\r\n      if (search <= doc.first) return doc.first;\r\n      var line = getLine(doc, search - 1);\r\n      if (line.stateAfter && (!precise || search <= doc.frontier)) return search;\r\n      var indented = countColumn(line.text, null, cm.options.tabSize);\r\n      if (minline == null || minindent > indented) {\r\n        minline = search - 1;\r\n        minindent = indented;\r\n      }\r\n    }\r\n    return minline;\r\n  }\r\n\r\n  function getStateBefore(cm, n, precise) {\r\n    var doc = cm.doc, display = cm.display;\r\n    if (!doc.mode.startState) return true;\r\n    var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;\r\n    if (!state) state = startState(doc.mode);\r\n    else state = copyState(doc.mode, state);\r\n    doc.iter(pos, n, function(line) {\r\n      processLine(cm, line.text, state);\r\n      var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo;\r\n      line.stateAfter = save ? copyState(doc.mode, state) : null;\r\n      ++pos;\r\n    });\r\n    if (precise) doc.frontier = pos;\r\n    return state;\r\n  }\r\n\r\n  // POSITION MEASUREMENT\r\n\r\n  function paddingTop(display) {return display.lineSpace.offsetTop;}\r\n  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}\r\n  function paddingH(display) {\r\n    if (display.cachedPaddingH) return display.cachedPaddingH;\r\n    var e = removeChildrenAndAdd(display.measure, elt(\"pre\", \"x\"));\r\n    var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;\r\n    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};\r\n    if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data;\r\n    return data;\r\n  }\r\n\r\n  function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth; }\r\n  function displayWidth(cm) {\r\n    return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth;\r\n  }\r\n  function displayHeight(cm) {\r\n    return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight;\r\n  }\r\n\r\n  // Ensure the lineView.wrapping.heights array is populated. This is\r\n  // an array of bottom offsets for the lines that make up a drawn\r\n  // line. When lineWrapping is on, there might be more than one\r\n  // height.\r\n  function ensureLineHeights(cm, lineView, rect) {\r\n    var wrapping = cm.options.lineWrapping;\r\n    var curWidth = wrapping && displayWidth(cm);\r\n    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {\r\n      var heights = lineView.measure.heights = [];\r\n      if (wrapping) {\r\n        lineView.measure.width = curWidth;\r\n        var rects = lineView.text.firstChild.getClientRects();\r\n        for (var i = 0; i < rects.length - 1; i++) {\r\n          var cur = rects[i], next = rects[i + 1];\r\n          if (Math.abs(cur.bottom - next.bottom) > 2)\r\n            heights.push((cur.bottom + next.top) / 2 - rect.top);\r\n        }\r\n      }\r\n      heights.push(rect.bottom - rect.top);\r\n    }\r\n  }\r\n\r\n  // Find a line map (mapping character offsets to text nodes) and a\r\n  // measurement cache for the given line number. (A line view might\r\n  // contain multiple lines when collapsed ranges are present.)\r\n  function mapFromLineView(lineView, line, lineN) {\r\n    if (lineView.line == line)\r\n      return {map: lineView.measure.map, cache: lineView.measure.cache};\r\n    for (var i = 0; i < lineView.rest.length; i++)\r\n      if (lineView.rest[i] == line)\r\n        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]};\r\n    for (var i = 0; i < lineView.rest.length; i++)\r\n      if (lineNo(lineView.rest[i]) > lineN)\r\n        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true};\r\n  }\r\n\r\n  // Render a line into the hidden node display.externalMeasured. Used\r\n  // when measurement is needed for a line that's not in the viewport.\r\n  function updateExternalMeasurement(cm, line) {\r\n    line = visualLine(line);\r\n    var lineN = lineNo(line);\r\n    var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);\r\n    view.lineN = lineN;\r\n    var built = view.built = buildLineContent(cm, view);\r\n    view.text = built.pre;\r\n    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);\r\n    return view;\r\n  }\r\n\r\n  // Get a {top, bottom, left, right} box (in line-local coordinates)\r\n  // for a given character.\r\n  function measureChar(cm, line, ch, bias) {\r\n    return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias);\r\n  }\r\n\r\n  // Find a line view that corresponds to the given line number.\r\n  function findViewForLine(cm, lineN) {\r\n    if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)\r\n      return cm.display.view[findViewIndex(cm, lineN)];\r\n    var ext = cm.display.externalMeasured;\r\n    if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)\r\n      return ext;\r\n  }\r\n\r\n  // Measurement can be split in two steps, the set-up work that\r\n  // applies to the whole line, and the measurement of the actual\r\n  // character. Functions like coordsChar, that need to do a lot of\r\n  // measurements in a row, can thus ensure that the set-up work is\r\n  // only done once.\r\n  function prepareMeasureForLine(cm, line) {\r\n    var lineN = lineNo(line);\r\n    var view = findViewForLine(cm, lineN);\r\n    if (view && !view.text) {\r\n      view = null;\r\n    } else if (view && view.changes) {\r\n      updateLineForChanges(cm, view, lineN, getDimensions(cm));\r\n      cm.curOp.forceUpdate = true;\r\n    }\r\n    if (!view)\r\n      view = updateExternalMeasurement(cm, line);\r\n\r\n    var info = mapFromLineView(view, line, lineN);\r\n    return {\r\n      line: line, view: view, rect: null,\r\n      map: info.map, cache: info.cache, before: info.before,\r\n      hasHeights: false\r\n    };\r\n  }\r\n\r\n  // Given a prepared measurement object, measures the position of an\r\n  // actual character (or fetches it from the cache).\r\n  function measureCharPrepared(cm, prepared, ch, bias, varHeight) {\r\n    if (prepared.before) ch = -1;\r\n    var key = ch + (bias || \"\"), found;\r\n    if (prepared.cache.hasOwnProperty(key)) {\r\n      found = prepared.cache[key];\r\n    } else {\r\n      if (!prepared.rect)\r\n        prepared.rect = prepared.view.text.getBoundingClientRect();\r\n      if (!prepared.hasHeights) {\r\n        ensureLineHeights(cm, prepared.view, prepared.rect);\r\n        prepared.hasHeights = true;\r\n      }\r\n      found = measureCharInner(cm, prepared, ch, bias);\r\n      if (!found.bogus) prepared.cache[key] = found;\r\n    }\r\n    return {left: found.left, right: found.right,\r\n            top: varHeight ? found.rtop : found.top,\r\n            bottom: varHeight ? found.rbottom : found.bottom};\r\n  }\r\n\r\n  var nullRect = {left: 0, right: 0, top: 0, bottom: 0};\r\n\r\n  function nodeAndOffsetInLineMap(map, ch, bias) {\r\n    var node, start, end, collapse;\r\n    // First, search the line map for the text node corresponding to,\r\n    // or closest to, the target character.\r\n    for (var i = 0; i < map.length; i += 3) {\r\n      var mStart = map[i], mEnd = map[i + 1];\r\n      if (ch < mStart) {\r\n        start = 0; end = 1;\r\n        collapse = \"left\";\r\n      } else if (ch < mEnd) {\r\n        start = ch - mStart;\r\n        end = start + 1;\r\n      } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {\r\n        end = mEnd - mStart;\r\n        start = end - 1;\r\n        if (ch >= mEnd) collapse = \"right\";\r\n      }\r\n      if (start != null) {\r\n        node = map[i + 2];\r\n        if (mStart == mEnd && bias == (node.insertLeft ? \"left\" : \"right\"))\r\n          collapse = bias;\r\n        if (bias == \"left\" && start == 0)\r\n          while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {\r\n            node = map[(i -= 3) + 2];\r\n            collapse = \"left\";\r\n          }\r\n        if (bias == \"right\" && start == mEnd - mStart)\r\n          while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {\r\n            node = map[(i += 3) + 2];\r\n            collapse = \"right\";\r\n          }\r\n        break;\r\n      }\r\n    }\r\n    return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd};\r\n  }\r\n\r\n  function measureCharInner(cm, prepared, ch, bias) {\r\n    var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);\r\n    var node = place.node, start = place.start, end = place.end, collapse = place.collapse;\r\n\r\n    var rect;\r\n    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.\r\n      for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned\r\n        while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) --start;\r\n        while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) ++end;\r\n        if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) {\r\n          rect = node.parentNode.getBoundingClientRect();\r\n        } else if (ie && cm.options.lineWrapping) {\r\n          var rects = range(node, start, end).getClientRects();\r\n          if (rects.length)\r\n            rect = rects[bias == \"right\" ? rects.length - 1 : 0];\r\n          else\r\n            rect = nullRect;\r\n        } else {\r\n          rect = range(node, start, end).getBoundingClientRect() || nullRect;\r\n        }\r\n        if (rect.left || rect.right || start == 0) break;\r\n        end = start;\r\n        start = start - 1;\r\n        collapse = \"right\";\r\n      }\r\n      if (ie && ie_version < 11) rect = maybeUpdateRectForZooming(cm.display.measure, rect);\r\n    } else { // If it is a widget, simply get the box for the whole widget.\r\n      if (start > 0) collapse = bias = \"right\";\r\n      var rects;\r\n      if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)\r\n        rect = rects[bias == \"right\" ? rects.length - 1 : 0];\r\n      else\r\n        rect = node.getBoundingClientRect();\r\n    }\r\n    if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {\r\n      var rSpan = node.parentNode.getClientRects()[0];\r\n      if (rSpan)\r\n        rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};\r\n      else\r\n        rect = nullRect;\r\n    }\r\n\r\n    var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top;\r\n    var mid = (rtop + rbot) / 2;\r\n    var heights = prepared.view.measure.heights;\r\n    for (var i = 0; i < heights.length - 1; i++)\r\n      if (mid < heights[i]) break;\r\n    var top = i ? heights[i - 1] : 0, bot = heights[i];\r\n    var result = {left: (collapse == \"right\" ? rect.right : rect.left) - prepared.rect.left,\r\n                  right: (collapse == \"left\" ? rect.left : rect.right) - prepared.rect.left,\r\n                  top: top, bottom: bot};\r\n    if (!rect.left && !rect.right) result.bogus = true;\r\n    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }\r\n\r\n    return result;\r\n  }\r\n\r\n  // Work around problem with bounding client rects on ranges being\r\n  // returned incorrectly when zoomed on IE10 and below.\r\n  function maybeUpdateRectForZooming(measure, rect) {\r\n    if (!window.screen || screen.logicalXDPI == null ||\r\n        screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))\r\n      return rect;\r\n    var scaleX = screen.logicalXDPI / screen.deviceXDPI;\r\n    var scaleY = screen.logicalYDPI / screen.deviceYDPI;\r\n    return {left: rect.left * scaleX, right: rect.right * scaleX,\r\n            top: rect.top * scaleY, bottom: rect.bottom * scaleY};\r\n  }\r\n\r\n  function clearLineMeasurementCacheFor(lineView) {\r\n    if (lineView.measure) {\r\n      lineView.measure.cache = {};\r\n      lineView.measure.heights = null;\r\n      if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)\r\n        lineView.measure.caches[i] = {};\r\n    }\r\n  }\r\n\r\n  function clearLineMeasurementCache(cm) {\r\n    cm.display.externalMeasure = null;\r\n    removeChildren(cm.display.lineMeasure);\r\n    for (var i = 0; i < cm.display.view.length; i++)\r\n      clearLineMeasurementCacheFor(cm.display.view[i]);\r\n  }\r\n\r\n  function clearCaches(cm) {\r\n    clearLineMeasurementCache(cm);\r\n    cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;\r\n    if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;\r\n    cm.display.lineNumChars = null;\r\n  }\r\n\r\n  function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }\r\n  function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }\r\n\r\n  // Converts a {top, bottom, left, right} box from line-local\r\n  // coordinates into another coordinate system. Context may be one of\r\n  // \"line\", \"div\" (display.lineDiv), \"local\"/null (editor), \"window\",\r\n  // or \"page\".\r\n  function intoCoordSystem(cm, lineObj, rect, context) {\r\n    if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {\r\n      var size = widgetHeight(lineObj.widgets[i]);\r\n      rect.top += size; rect.bottom += size;\r\n    }\r\n    if (context == \"line\") return rect;\r\n    if (!context) context = \"local\";\r\n    var yOff = heightAtLine(lineObj);\r\n    if (context == \"local\") yOff += paddingTop(cm.display);\r\n    else yOff -= cm.display.viewOffset;\r\n    if (context == \"page\" || context == \"window\") {\r\n      var lOff = cm.display.lineSpace.getBoundingClientRect();\r\n      yOff += lOff.top + (context == \"window\" ? 0 : pageScrollY());\r\n      var xOff = lOff.left + (context == \"window\" ? 0 : pageScrollX());\r\n      rect.left += xOff; rect.right += xOff;\r\n    }\r\n    rect.top += yOff; rect.bottom += yOff;\r\n    return rect;\r\n  }\r\n\r\n  // Coverts a box from \"div\" coords to another coordinate system.\r\n  // Context may be \"window\", \"page\", \"div\", or \"local\"/null.\r\n  function fromCoordSystem(cm, coords, context) {\r\n    if (context == \"div\") return coords;\r\n    var left = coords.left, top = coords.top;\r\n    // First move into \"page\" coordinate system\r\n    if (context == \"page\") {\r\n      left -= pageScrollX();\r\n      top -= pageScrollY();\r\n    } else if (context == \"local\" || !context) {\r\n      var localBox = cm.display.sizer.getBoundingClientRect();\r\n      left += localBox.left;\r\n      top += localBox.top;\r\n    }\r\n\r\n    var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();\r\n    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};\r\n  }\r\n\r\n  function charCoords(cm, pos, context, lineObj, bias) {\r\n    if (!lineObj) lineObj = getLine(cm.doc, pos.line);\r\n    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);\r\n  }\r\n\r\n  // Returns a box for a given cursor position, which may have an\r\n  // 'other' property containing the position of the secondary cursor\r\n  // on a bidi boundary.\r\n  function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {\r\n    lineObj = lineObj || getLine(cm.doc, pos.line);\r\n    if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj);\r\n    function get(ch, right) {\r\n      var m = measureCharPrepared(cm, preparedMeasure, ch, right ? \"right\" : \"left\", varHeight);\r\n      if (right) m.left = m.right; else m.right = m.left;\r\n      return intoCoordSystem(cm, lineObj, m, context);\r\n    }\r\n    function getBidi(ch, partPos) {\r\n      var part = order[partPos], right = part.level % 2;\r\n      if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {\r\n        part = order[--partPos];\r\n        ch = bidiRight(part) - (part.level % 2 ? 0 : 1);\r\n        right = true;\r\n      } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {\r\n        part = order[++partPos];\r\n        ch = bidiLeft(part) - part.level % 2;\r\n        right = false;\r\n      }\r\n      if (right && ch == part.to && ch > part.from) return get(ch - 1);\r\n      return get(ch, right);\r\n    }\r\n    var order = getOrder(lineObj), ch = pos.ch;\r\n    if (!order) return get(ch);\r\n    var partPos = getBidiPartAt(order, ch);\r\n    var val = getBidi(ch, partPos);\r\n    if (bidiOther != null) val.other = getBidi(ch, bidiOther);\r\n    return val;\r\n  }\r\n\r\n  // Used to cheaply estimate the coordinates for a position. Used for\r\n  // intermediate scroll updates.\r\n  function estimateCoords(cm, pos) {\r\n    var left = 0, pos = clipPos(cm.doc, pos);\r\n    if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch;\r\n    var lineObj = getLine(cm.doc, pos.line);\r\n    var top = heightAtLine(lineObj) + paddingTop(cm.display);\r\n    return {left: left, right: left, top: top, bottom: top + lineObj.height};\r\n  }\r\n\r\n  // Positions returned by coordsChar contain some extra information.\r\n  // xRel is the relative x position of the input coordinates compared\r\n  // to the found position (so xRel > 0 means the coordinates are to\r\n  // the right of the character position, for example). When outside\r\n  // is true, that means the coordinates lie outside the line's\r\n  // vertical range.\r\n  function PosWithInfo(line, ch, outside, xRel) {\r\n    var pos = Pos(line, ch);\r\n    pos.xRel = xRel;\r\n    if (outside) pos.outside = true;\r\n    return pos;\r\n  }\r\n\r\n  // Compute the character position closest to the given coordinates.\r\n  // Input must be lineSpace-local (\"div\" coordinate system).\r\n  function coordsChar(cm, x, y) {\r\n    var doc = cm.doc;\r\n    y += cm.display.viewOffset;\r\n    if (y < 0) return PosWithInfo(doc.first, 0, true, -1);\r\n    var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;\r\n    if (lineN > last)\r\n      return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);\r\n    if (x < 0) x = 0;\r\n\r\n    var lineObj = getLine(doc, lineN);\r\n    for (;;) {\r\n      var found = coordsCharInner(cm, lineObj, lineN, x, y);\r\n      var merged = collapsedSpanAtEnd(lineObj);\r\n      var mergedPos = merged && merged.find(0, true);\r\n      if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))\r\n        lineN = lineNo(lineObj = mergedPos.to.line);\r\n      else\r\n        return found;\r\n    }\r\n  }\r\n\r\n  function coordsCharInner(cm, lineObj, lineNo, x, y) {\r\n    var innerOff = y - heightAtLine(lineObj);\r\n    var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;\r\n    var preparedMeasure = prepareMeasureForLine(cm, lineObj);\r\n\r\n    function getX(ch) {\r\n      var sp = cursorCoords(cm, Pos(lineNo, ch), \"line\", lineObj, preparedMeasure);\r\n      wrongLine = true;\r\n      if (innerOff > sp.bottom) return sp.left - adjust;\r\n      else if (innerOff < sp.top) return sp.left + adjust;\r\n      else wrongLine = false;\r\n      return sp.left;\r\n    }\r\n\r\n    var bidi = getOrder(lineObj), dist = lineObj.text.length;\r\n    var from = lineLeft(lineObj), to = lineRight(lineObj);\r\n    var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;\r\n\r\n    if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);\r\n    // Do a binary search between these bounds.\r\n    for (;;) {\r\n      if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {\r\n        var ch = x < fromX || x - fromX <= toX - x ? from : to;\r\n        var xDiff = x - (ch == from ? fromX : toX);\r\n        while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;\r\n        var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,\r\n                              xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);\r\n        return pos;\r\n      }\r\n      var step = Math.ceil(dist / 2), middle = from + step;\r\n      if (bidi) {\r\n        middle = from;\r\n        for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);\r\n      }\r\n      var middleX = getX(middle);\r\n      if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}\r\n      else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}\r\n    }\r\n  }\r\n\r\n  var measureText;\r\n  // Compute the default text height.\r\n  function textHeight(display) {\r\n    if (display.cachedTextHeight != null) return display.cachedTextHeight;\r\n    if (measureText == null) {\r\n      measureText = elt(\"pre\");\r\n      // Measure a bunch of lines, for browsers that compute\r\n      // fractional heights.\r\n      for (var i = 0; i < 49; ++i) {\r\n        measureText.appendChild(document.createTextNode(\"x\"));\r\n        measureText.appendChild(elt(\"br\"));\r\n      }\r\n      measureText.appendChild(document.createTextNode(\"x\"));\r\n    }\r\n    removeChildrenAndAdd(display.measure, measureText);\r\n    var height = measureText.offsetHeight / 50;\r\n    if (height > 3) display.cachedTextHeight = height;\r\n    removeChildren(display.measure);\r\n    return height || 1;\r\n  }\r\n\r\n  // Compute the default character width.\r\n  function charWidth(display) {\r\n    if (display.cachedCharWidth != null) return display.cachedCharWidth;\r\n    var anchor = elt(\"span\", \"xxxxxxxxxx\");\r\n    var pre = elt(\"pre\", [anchor]);\r\n    removeChildrenAndAdd(display.measure, pre);\r\n    var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;\r\n    if (width > 2) display.cachedCharWidth = width;\r\n    return width || 10;\r\n  }\r\n\r\n  // OPERATIONS\r\n\r\n  // Operations are used to wrap a series of changes to the editor\r\n  // state in such a way that each change won't have to update the\r\n  // cursor and display (which would be awkward, slow, and\r\n  // error-prone). Instead, display updates are batched and then all\r\n  // combined and executed at once.\r\n\r\n  var operationGroup = null;\r\n\r\n  var nextOpId = 0;\r\n  // Start a new operation.\r\n  function startOperation(cm) {\r\n    cm.curOp = {\r\n      cm: cm,\r\n      viewChanged: false,      // Flag that indicates that lines might need to be redrawn\r\n      startHeight: cm.doc.height, // Used to detect need to update scrollbar\r\n      forceUpdate: false,      // Used to force a redraw\r\n      updateInput: null,       // Whether to reset the input textarea\r\n      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)\r\n      changeObjs: null,        // Accumulated changes, for firing change events\r\n      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on\r\n      cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already\r\n      selectionChanged: false, // Whether the selection needs to be redrawn\r\n      updateMaxLine: false,    // Set when the widest line needs to be determined anew\r\n      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet\r\n      scrollToPos: null,       // Used to scroll to a specific position\r\n      focus: false,\r\n      id: ++nextOpId           // Unique ID\r\n    };\r\n    if (operationGroup) {\r\n      operationGroup.ops.push(cm.curOp);\r\n    } else {\r\n      cm.curOp.ownsGroup = operationGroup = {\r\n        ops: [cm.curOp],\r\n        delayedCallbacks: []\r\n      };\r\n    }\r\n  }\r\n\r\n  function fireCallbacksForOps(group) {\r\n    // Calls delayed callbacks and cursorActivity handlers until no\r\n    // new ones appear\r\n    var callbacks = group.delayedCallbacks, i = 0;\r\n    do {\r\n      for (; i < callbacks.length; i++)\r\n        callbacks[i].call(null);\r\n      for (var j = 0; j < group.ops.length; j++) {\r\n        var op = group.ops[j];\r\n        if (op.cursorActivityHandlers)\r\n          while (op.cursorActivityCalled < op.cursorActivityHandlers.length)\r\n            op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm);\r\n      }\r\n    } while (i < callbacks.length);\r\n  }\r\n\r\n  // Finish an operation, updating the display and signalling delayed events\r\n  function endOperation(cm) {\r\n    var op = cm.curOp, group = op.ownsGroup;\r\n    if (!group) return;\r\n\r\n    try { fireCallbacksForOps(group); }\r\n    finally {\r\n      operationGroup = null;\r\n      for (var i = 0; i < group.ops.length; i++)\r\n        group.ops[i].cm.curOp = null;\r\n      endOperations(group);\r\n    }\r\n  }\r\n\r\n  // The DOM updates done when an operation finishes are batched so\r\n  // that the minimum number of relayouts are required.\r\n  function endOperations(group) {\r\n    var ops = group.ops;\r\n    for (var i = 0; i < ops.length; i++) // Read DOM\r\n      endOperation_R1(ops[i]);\r\n    for (var i = 0; i < ops.length; i++) // Write DOM (maybe)\r\n      endOperation_W1(ops[i]);\r\n    for (var i = 0; i < ops.length; i++) // Read DOM\r\n      endOperation_R2(ops[i]);\r\n    for (var i = 0; i < ops.length; i++) // Write DOM (maybe)\r\n      endOperation_W2(ops[i]);\r\n    for (var i = 0; i < ops.length; i++) // Read DOM\r\n      endOperation_finish(ops[i]);\r\n  }\r\n\r\n  function endOperation_R1(op) {\r\n    var cm = op.cm, display = cm.display;\r\n    maybeClipScrollbars(cm);\r\n    if (op.updateMaxLine) findMaxLine(cm);\r\n\r\n    op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||\r\n      op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||\r\n                         op.scrollToPos.to.line >= display.viewTo) ||\r\n      display.maxLineChanged && cm.options.lineWrapping;\r\n    op.update = op.mustUpdate &&\r\n      new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);\r\n  }\r\n\r\n  function endOperation_W1(op) {\r\n    op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);\r\n  }\r\n\r\n  function endOperation_R2(op) {\r\n    var cm = op.cm, display = cm.display;\r\n    if (op.updatedDisplay) updateHeightsInViewport(cm);\r\n\r\n    op.barMeasure = measureForScrollbars(cm);\r\n\r\n    // If the max line changed since it was last measured, measure it,\r\n    // and ensure the document's width matches it.\r\n    // updateDisplay_W2 will use these properties to do the actual resizing\r\n    if (display.maxLineChanged && !cm.options.lineWrapping) {\r\n      op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;\r\n      cm.display.sizerWidth = op.adjustWidthTo;\r\n      op.barMeasure.scrollWidth =\r\n        Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);\r\n      op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));\r\n    }\r\n\r\n    if (op.updatedDisplay || op.selectionChanged)\r\n      op.preparedSelection = display.input.prepareSelection();\r\n  }\r\n\r\n  function endOperation_W2(op) {\r\n    var cm = op.cm;\r\n\r\n    if (op.adjustWidthTo != null) {\r\n      cm.display.sizer.style.minWidth = op.adjustWidthTo + \"px\";\r\n      if (op.maxScrollLeft < cm.doc.scrollLeft)\r\n        setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true);\r\n      cm.display.maxLineChanged = false;\r\n    }\r\n\r\n    if (op.preparedSelection)\r\n      cm.display.input.showSelection(op.preparedSelection);\r\n    if (op.updatedDisplay)\r\n      setDocumentHeight(cm, op.barMeasure);\r\n    if (op.updatedDisplay || op.startHeight != cm.doc.height)\r\n      updateScrollbars(cm, op.barMeasure);\r\n\r\n    if (op.selectionChanged) restartBlink(cm);\r\n\r\n    if (cm.state.focused && op.updateInput)\r\n      cm.display.input.reset(op.typing);\r\n    if (op.focus && op.focus == activeElt() && (!document.hasFocus || document.hasFocus()))\r\n      ensureFocus(op.cm);\r\n  }\r\n\r\n  function endOperation_finish(op) {\r\n    var cm = op.cm, display = cm.display, doc = cm.doc;\r\n\r\n    if (op.updatedDisplay) postUpdateDisplay(cm, op.update);\r\n\r\n    // Abort mouse wheel delta measurement, when scrolling explicitly\r\n    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))\r\n      display.wheelStartX = display.wheelStartY = null;\r\n\r\n    // Propagate the scroll position to the actual DOM scroller\r\n    if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) {\r\n      doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop));\r\n      display.scrollbars.setScrollTop(doc.scrollTop);\r\n      display.scroller.scrollTop = doc.scrollTop;\r\n    }\r\n    if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) {\r\n      doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - displayWidth(cm), op.scrollLeft));\r\n      display.scrollbars.setScrollLeft(doc.scrollLeft);\r\n      display.scroller.scrollLeft = doc.scrollLeft;\r\n      alignHorizontally(cm);\r\n    }\r\n    // If we need to scroll a specific position into view, do so.\r\n    if (op.scrollToPos) {\r\n      var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),\r\n                                     clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);\r\n      if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);\r\n    }\r\n\r\n    // Fire events for markers that are hidden/unidden by editing or\r\n    // undoing\r\n    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;\r\n    if (hidden) for (var i = 0; i < hidden.length; ++i)\r\n      if (!hidden[i].lines.length) signal(hidden[i], \"hide\");\r\n    if (unhidden) for (var i = 0; i < unhidden.length; ++i)\r\n      if (unhidden[i].lines.length) signal(unhidden[i], \"unhide\");\r\n\r\n    if (display.wrapper.offsetHeight)\r\n      doc.scrollTop = cm.display.scroller.scrollTop;\r\n\r\n    // Fire change events, and delayed event handlers\r\n    if (op.changeObjs)\r\n      signal(cm, \"changes\", cm, op.changeObjs);\r\n    if (op.update)\r\n      op.update.finish();\r\n  }\r\n\r\n  // Run the given function in an operation\r\n  function runInOp(cm, f) {\r\n    if (cm.curOp) return f();\r\n    startOperation(cm);\r\n    try { return f(); }\r\n    finally { endOperation(cm); }\r\n  }\r\n  // Wraps a function in an operation. Returns the wrapped function.\r\n  function operation(cm, f) {\r\n    return function() {\r\n      if (cm.curOp) return f.apply(cm, arguments);\r\n      startOperation(cm);\r\n      try { return f.apply(cm, arguments); }\r\n      finally { endOperation(cm); }\r\n    };\r\n  }\r\n  // Used to add methods to editor and doc instances, wrapping them in\r\n  // operations.\r\n  function methodOp(f) {\r\n    return function() {\r\n      if (this.curOp) return f.apply(this, arguments);\r\n      startOperation(this);\r\n      try { return f.apply(this, arguments); }\r\n      finally { endOperation(this); }\r\n    };\r\n  }\r\n  function docMethodOp(f) {\r\n    return function() {\r\n      var cm = this.cm;\r\n      if (!cm || cm.curOp) return f.apply(this, arguments);\r\n      startOperation(cm);\r\n      try { return f.apply(this, arguments); }\r\n      finally { endOperation(cm); }\r\n    };\r\n  }\r\n\r\n  // VIEW TRACKING\r\n\r\n  // These objects are used to represent the visible (currently drawn)\r\n  // part of the document. A LineView may correspond to multiple\r\n  // logical lines, if those are connected by collapsed ranges.\r\n  function LineView(doc, line, lineN) {\r\n    // The starting line\r\n    this.line = line;\r\n    // Continuing lines, if any\r\n    this.rest = visualLineContinued(line);\r\n    // Number of logical lines in this visual line\r\n    this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;\r\n    this.node = this.text = null;\r\n    this.hidden = lineIsHidden(doc, line);\r\n  }\r\n\r\n  // Create a range of LineView objects for the given lines.\r\n  function buildViewArray(cm, from, to) {\r\n    var array = [], nextPos;\r\n    for (var pos = from; pos < to; pos = nextPos) {\r\n      var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);\r\n      nextPos = pos + view.size;\r\n      array.push(view);\r\n    }\r\n    return array;\r\n  }\r\n\r\n  // Updates the display.view data structure for a given change to the\r\n  // document. From and to are in pre-change coordinates. Lendiff is\r\n  // the amount of lines added or subtracted by the change. This is\r\n  // used for changes that span multiple lines, or change the way\r\n  // lines are divided into visual lines. regLineChange (below)\r\n  // registers single-line changes.\r\n  function regChange(cm, from, to, lendiff) {\r\n    if (from == null) from = cm.doc.first;\r\n    if (to == null) to = cm.doc.first + cm.doc.size;\r\n    if (!lendiff) lendiff = 0;\r\n\r\n    var display = cm.display;\r\n    if (lendiff && to < display.viewTo &&\r\n        (display.updateLineNumbers == null || display.updateLineNumbers > from))\r\n      display.updateLineNumbers = from;\r\n\r\n    cm.curOp.viewChanged = true;\r\n\r\n    if (from >= display.viewTo) { // Change after\r\n      if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)\r\n        resetView(cm);\r\n    } else if (to <= display.viewFrom) { // Change before\r\n      if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {\r\n        resetView(cm);\r\n      } else {\r\n        display.viewFrom += lendiff;\r\n        display.viewTo += lendiff;\r\n      }\r\n    } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap\r\n      resetView(cm);\r\n    } else if (from <= display.viewFrom) { // Top overlap\r\n      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);\r\n      if (cut) {\r\n        display.view = display.view.slice(cut.index);\r\n        display.viewFrom = cut.lineN;\r\n        display.viewTo += lendiff;\r\n      } else {\r\n        resetView(cm);\r\n      }\r\n    } else if (to >= display.viewTo) { // Bottom overlap\r\n      var cut = viewCuttingPoint(cm, from, from, -1);\r\n      if (cut) {\r\n        display.view = display.view.slice(0, cut.index);\r\n        display.viewTo = cut.lineN;\r\n      } else {\r\n        resetView(cm);\r\n      }\r\n    } else { // Gap in the middle\r\n      var cutTop = viewCuttingPoint(cm, from, from, -1);\r\n      var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);\r\n      if (cutTop && cutBot) {\r\n        display.view = display.view.slice(0, cutTop.index)\r\n          .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))\r\n          .concat(display.view.slice(cutBot.index));\r\n        display.viewTo += lendiff;\r\n      } else {\r\n        resetView(cm);\r\n      }\r\n    }\r\n\r\n    var ext = display.externalMeasured;\r\n    if (ext) {\r\n      if (to < ext.lineN)\r\n        ext.lineN += lendiff;\r\n      else if (from < ext.lineN + ext.size)\r\n        display.externalMeasured = null;\r\n    }\r\n  }\r\n\r\n  // Register a change to a single line. Type must be one of \"text\",\r\n  // \"gutter\", \"class\", \"widget\"\r\n  function regLineChange(cm, line, type) {\r\n    cm.curOp.viewChanged = true;\r\n    var display = cm.display, ext = cm.display.externalMeasured;\r\n    if (ext && line >= ext.lineN && line < ext.lineN + ext.size)\r\n      display.externalMeasured = null;\r\n\r\n    if (line < display.viewFrom || line >= display.viewTo) return;\r\n    var lineView = display.view[findViewIndex(cm, line)];\r\n    if (lineView.node == null) return;\r\n    var arr = lineView.changes || (lineView.changes = []);\r\n    if (indexOf(arr, type) == -1) arr.push(type);\r\n  }\r\n\r\n  // Clear the view.\r\n  function resetView(cm) {\r\n    cm.display.viewFrom = cm.display.viewTo = cm.doc.first;\r\n    cm.display.view = [];\r\n    cm.display.viewOffset = 0;\r\n  }\r\n\r\n  // Find the view element corresponding to a given line. Return null\r\n  // when the line isn't visible.\r\n  function findViewIndex(cm, n) {\r\n    if (n >= cm.display.viewTo) return null;\r\n    n -= cm.display.viewFrom;\r\n    if (n < 0) return null;\r\n    var view = cm.display.view;\r\n    for (var i = 0; i < view.length; i++) {\r\n      n -= view[i].size;\r\n      if (n < 0) return i;\r\n    }\r\n  }\r\n\r\n  function viewCuttingPoint(cm, oldN, newN, dir) {\r\n    var index = findViewIndex(cm, oldN), diff, view = cm.display.view;\r\n    if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)\r\n      return {index: index, lineN: newN};\r\n    for (var i = 0, n = cm.display.viewFrom; i < index; i++)\r\n      n += view[i].size;\r\n    if (n != oldN) {\r\n      if (dir > 0) {\r\n        if (index == view.length - 1) return null;\r\n        diff = (n + view[index].size) - oldN;\r\n        index++;\r\n      } else {\r\n        diff = n - oldN;\r\n      }\r\n      oldN += diff; newN += diff;\r\n    }\r\n    while (visualLineNo(cm.doc, newN) != newN) {\r\n      if (index == (dir < 0 ? 0 : view.length - 1)) return null;\r\n      newN += dir * view[index - (dir < 0 ? 1 : 0)].size;\r\n      index += dir;\r\n    }\r\n    return {index: index, lineN: newN};\r\n  }\r\n\r\n  // Force the view to cover a given range, adding empty view element\r\n  // or clipping off existing ones as needed.\r\n  function adjustView(cm, from, to) {\r\n    var display = cm.display, view = display.view;\r\n    if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {\r\n      display.view = buildViewArray(cm, from, to);\r\n      display.viewFrom = from;\r\n    } else {\r\n      if (display.viewFrom > from)\r\n        display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view);\r\n      else if (display.viewFrom < from)\r\n        display.view = display.view.slice(findViewIndex(cm, from));\r\n      display.viewFrom = from;\r\n      if (display.viewTo < to)\r\n        display.view = display.view.concat(buildViewArray(cm, display.viewTo, to));\r\n      else if (display.viewTo > to)\r\n        display.view = display.view.slice(0, findViewIndex(cm, to));\r\n    }\r\n    display.viewTo = to;\r\n  }\r\n\r\n  // Count the number of lines in the view whose DOM representation is\r\n  // out of date (or nonexistent).\r\n  function countDirtyView(cm) {\r\n    var view = cm.display.view, dirty = 0;\r\n    for (var i = 0; i < view.length; i++) {\r\n      var lineView = view[i];\r\n      if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty;\r\n    }\r\n    return dirty;\r\n  }\r\n\r\n  // EVENT HANDLERS\r\n\r\n  // Attach the necessary event handlers when initializing the editor\r\n  function registerEventHandlers(cm) {\r\n    var d = cm.display;\r\n    on(d.scroller, \"mousedown\", operation(cm, onMouseDown));\r\n    // Older IE's will not fire a second mousedown for a double click\r\n    if (ie && ie_version < 11)\r\n      on(d.scroller, \"dblclick\", operation(cm, function(e) {\r\n        if (signalDOMEvent(cm, e)) return;\r\n        var pos = posFromMouse(cm, e);\r\n        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;\r\n        e_preventDefault(e);\r\n        var word = cm.findWordAt(pos);\r\n        extendSelection(cm.doc, word.anchor, word.head);\r\n      }));\r\n    else\r\n      on(d.scroller, \"dblclick\", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });\r\n    // Some browsers fire contextmenu *after* opening the menu, at\r\n    // which point we can't mess with it anymore. Context menu is\r\n    // handled in onMouseDown for these browsers.\r\n    if (!captureRightClick) on(d.scroller, \"contextmenu\", function(e) {onContextMenu(cm, e);});\r\n\r\n    // Used to suppress mouse event handling when a touch happens\r\n    var touchFinished, prevTouch = {end: 0};\r\n    function finishTouch() {\r\n      if (d.activeTouch) {\r\n        touchFinished = setTimeout(function() {d.activeTouch = null;}, 1000);\r\n        prevTouch = d.activeTouch;\r\n        prevTouch.end = +new Date;\r\n      }\r\n    };\r\n    function isMouseLikeTouchEvent(e) {\r\n      if (e.touches.length != 1) return false;\r\n      var touch = e.touches[0];\r\n      return touch.radiusX <= 1 && touch.radiusY <= 1;\r\n    }\r\n    function farAway(touch, other) {\r\n      if (other.left == null) return true;\r\n      var dx = other.left - touch.left, dy = other.top - touch.top;\r\n      return dx * dx + dy * dy > 20 * 20;\r\n    }\r\n    on(d.scroller, \"touchstart\", function(e) {\r\n      if (!isMouseLikeTouchEvent(e)) {\r\n        clearTimeout(touchFinished);\r\n        var now = +new Date;\r\n        d.activeTouch = {start: now, moved: false,\r\n                         prev: now - prevTouch.end <= 300 ? prevTouch : null};\r\n        if (e.touches.length == 1) {\r\n          d.activeTouch.left = e.touches[0].pageX;\r\n          d.activeTouch.top = e.touches[0].pageY;\r\n        }\r\n      }\r\n    });\r\n    on(d.scroller, \"touchmove\", function() {\r\n      if (d.activeTouch) d.activeTouch.moved = true;\r\n    });\r\n    on(d.scroller, \"touchend\", function(e) {\r\n      var touch = d.activeTouch;\r\n      if (touch && !eventInWidget(d, e) && touch.left != null &&\r\n          !touch.moved && new Date - touch.start < 300) {\r\n        var pos = cm.coordsChar(d.activeTouch, \"page\"), range;\r\n        if (!touch.prev || farAway(touch, touch.prev)) // Single tap\r\n          range = new Range(pos, pos);\r\n        else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap\r\n          range = cm.findWordAt(pos);\r\n        else // Triple tap\r\n          range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0)));\r\n        cm.setSelection(range.anchor, range.head);\r\n        cm.focus();\r\n        e_preventDefault(e);\r\n      }\r\n      finishTouch();\r\n    });\r\n    on(d.scroller, \"touchcancel\", finishTouch);\r\n\r\n    // Sync scrolling between fake scrollbars and real scrollable\r\n    // area, ensure viewport is updated when scrolling.\r\n    on(d.scroller, \"scroll\", function() {\r\n      if (d.scroller.clientHeight) {\r\n        setScrollTop(cm, d.scroller.scrollTop);\r\n        setScrollLeft(cm, d.scroller.scrollLeft, true);\r\n        signal(cm, \"scroll\", cm);\r\n      }\r\n    });\r\n\r\n    // Listen to wheel events in order to try and update the viewport on time.\r\n    on(d.scroller, \"mousewheel\", function(e){onScrollWheel(cm, e);});\r\n    on(d.scroller, \"DOMMouseScroll\", function(e){onScrollWheel(cm, e);});\r\n\r\n    // Prevent wrapper from ever scrolling\r\n    on(d.wrapper, \"scroll\", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });\r\n\r\n    d.dragFunctions = {\r\n      enter: function(e) {if (!signalDOMEvent(cm, e)) e_stop(e);},\r\n      over: function(e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }},\r\n      start: function(e){onDragStart(cm, e);},\r\n      drop: operation(cm, onDrop),\r\n      leave: function() {clearDragCursor(cm);}\r\n    };\r\n\r\n    var inp = d.input.getField();\r\n    on(inp, \"keyup\", function(e) { onKeyUp.call(cm, e); });\r\n    on(inp, \"keydown\", operation(cm, onKeyDown));\r\n    on(inp, \"keypress\", operation(cm, onKeyPress));\r\n    on(inp, \"focus\", bind(onFocus, cm));\r\n    on(inp, \"blur\", bind(onBlur, cm));\r\n  }\r\n\r\n  function dragDropChanged(cm, value, old) {\r\n    var wasOn = old && old != CodeMirror.Init;\r\n    if (!value != !wasOn) {\r\n      var funcs = cm.display.dragFunctions;\r\n      var toggle = value ? on : off;\r\n      toggle(cm.display.scroller, \"dragstart\", funcs.start);\r\n      toggle(cm.display.scroller, \"dragenter\", funcs.enter);\r\n      toggle(cm.display.scroller, \"dragover\", funcs.over);\r\n      toggle(cm.display.scroller, \"dragleave\", funcs.leave);\r\n      toggle(cm.display.scroller, \"drop\", funcs.drop);\r\n    }\r\n  }\r\n\r\n  // Called when the window resizes\r\n  function onResize(cm) {\r\n    var d = cm.display;\r\n    if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)\r\n      return;\r\n    // Might be a text scaling operation, clear size caches.\r\n    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;\r\n    d.scrollbarsClipped = false;\r\n    cm.setSize();\r\n  }\r\n\r\n  // MOUSE EVENTS\r\n\r\n  // Return true when the given mouse event happened in a widget\r\n  function eventInWidget(display, e) {\r\n    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {\r\n      if (!n || (n.nodeType == 1 && n.getAttribute(\"cm-ignore-events\") == \"true\") ||\r\n          (n.parentNode == display.sizer && n != display.mover))\r\n        return true;\r\n    }\r\n  }\r\n\r\n  // Given a mouse event, find the corresponding position. If liberal\r\n  // is false, it checks whether a gutter or scrollbar was clicked,\r\n  // and returns null if it was. forRect is used by rectangular\r\n  // selections, and tries to estimate a character position even for\r\n  // coordinates beyond the right of the text.\r\n  function posFromMouse(cm, e, liberal, forRect) {\r\n    var display = cm.display;\r\n    if (!liberal && e_target(e).getAttribute(\"cm-not-content\") == \"true\") return null;\r\n\r\n    var x, y, space = display.lineSpace.getBoundingClientRect();\r\n    // Fails unpredictably on IE[67] when mouse is dragged around quickly.\r\n    try { x = e.clientX - space.left; y = e.clientY - space.top; }\r\n    catch (e) { return null; }\r\n    var coords = coordsChar(cm, x, y), line;\r\n    if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {\r\n      var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;\r\n      coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));\r\n    }\r\n    return coords;\r\n  }\r\n\r\n  // A mouse down can be a single click, double click, triple click,\r\n  // start of selection drag, start of text drag, new cursor\r\n  // (ctrl-click), rectangle drag (alt-drag), or xwin\r\n  // middle-click-paste. Or it might be a click on something we should\r\n  // not interfere with, such as a scrollbar or widget.\r\n  function onMouseDown(e) {\r\n    var cm = this, display = cm.display;\r\n    if (display.activeTouch && display.input.supportsTouch() || signalDOMEvent(cm, e)) return;\r\n    display.shift = e.shiftKey;\r\n\r\n    if (eventInWidget(display, e)) {\r\n      if (!webkit) {\r\n        // Briefly turn off draggability, to allow widgets to do\r\n        // normal dragging things.\r\n        display.scroller.draggable = false;\r\n        setTimeout(function(){display.scroller.draggable = true;}, 100);\r\n      }\r\n      return;\r\n    }\r\n    if (clickInGutter(cm, e)) return;\r\n    var start = posFromMouse(cm, e);\r\n    window.focus();\r\n\r\n    switch (e_button(e)) {\r\n    case 1:\r\n      // #3261: make sure, that we're not starting a second selection\r\n      if (cm.state.selectingText)\r\n        cm.state.selectingText(e);\r\n      else if (start)\r\n        leftButtonDown(cm, e, start);\r\n      else if (e_target(e) == display.scroller)\r\n        e_preventDefault(e);\r\n      break;\r\n    case 2:\r\n      if (webkit) cm.state.lastMiddleDown = +new Date;\r\n      if (start) extendSelection(cm.doc, start);\r\n      setTimeout(function() {display.input.focus();}, 20);\r\n      e_preventDefault(e);\r\n      break;\r\n    case 3:\r\n      if (captureRightClick) onContextMenu(cm, e);\r\n      else delayBlurEvent(cm);\r\n      break;\r\n    }\r\n  }\r\n\r\n  var lastClick, lastDoubleClick;\r\n  function leftButtonDown(cm, e, start) {\r\n    if (ie) setTimeout(bind(ensureFocus, cm), 0);\r\n    else cm.curOp.focus = activeElt();\r\n\r\n    var now = +new Date, type;\r\n    if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {\r\n      type = \"triple\";\r\n    } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {\r\n      type = \"double\";\r\n      lastDoubleClick = {time: now, pos: start};\r\n    } else {\r\n      type = \"single\";\r\n      lastClick = {time: now, pos: start};\r\n    }\r\n\r\n    var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained;\r\n    if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) &&\r\n        type == \"single\" && (contained = sel.contains(start)) > -1 &&\r\n        (cmp((contained = sel.ranges[contained]).from(), start) < 0 || start.xRel > 0) &&\r\n        (cmp(contained.to(), start) > 0 || start.xRel < 0))\r\n      leftButtonStartDrag(cm, e, start, modifier);\r\n    else\r\n      leftButtonSelect(cm, e, start, type, modifier);\r\n  }\r\n\r\n  // Start a text drag. When it ends, see if any dragging actually\r\n  // happen, and treat as a click if it didn't.\r\n  function leftButtonStartDrag(cm, e, start, modifier) {\r\n    var display = cm.display, startTime = +new Date;\r\n    var dragEnd = operation(cm, function(e2) {\r\n      if (webkit) display.scroller.draggable = false;\r\n      cm.state.draggingText = false;\r\n      off(document, \"mouseup\", dragEnd);\r\n      off(display.scroller, \"drop\", dragEnd);\r\n      if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {\r\n        e_preventDefault(e2);\r\n        if (!modifier && +new Date - 200 < startTime)\r\n          extendSelection(cm.doc, start);\r\n        // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)\r\n        if (webkit || ie && ie_version == 9)\r\n          setTimeout(function() {document.body.focus(); display.input.focus();}, 20);\r\n        else\r\n          display.input.focus();\r\n      }\r\n    });\r\n    // Let the drag handler handle this.\r\n    if (webkit) display.scroller.draggable = true;\r\n    cm.state.draggingText = dragEnd;\r\n    // IE's approach to draggable\r\n    if (display.scroller.dragDrop) display.scroller.dragDrop();\r\n    on(document, \"mouseup\", dragEnd);\r\n    on(display.scroller, \"drop\", dragEnd);\r\n  }\r\n\r\n  // Normal selection, as opposed to text dragging.\r\n  function leftButtonSelect(cm, e, start, type, addNew) {\r\n    var display = cm.display, doc = cm.doc;\r\n    e_preventDefault(e);\r\n\r\n    var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges;\r\n    if (addNew && !e.shiftKey) {\r\n      ourIndex = doc.sel.contains(start);\r\n      if (ourIndex > -1)\r\n        ourRange = ranges[ourIndex];\r\n      else\r\n        ourRange = new Range(start, start);\r\n    } else {\r\n      ourRange = doc.sel.primary();\r\n      ourIndex = doc.sel.primIndex;\r\n    }\r\n\r\n    if (e.altKey) {\r\n      type = \"rect\";\r\n      if (!addNew) ourRange = new Range(start, start);\r\n      start = posFromMouse(cm, e, true, true);\r\n      ourIndex = -1;\r\n    } else if (type == \"double\") {\r\n      var word = cm.findWordAt(start);\r\n      if (cm.display.shift || doc.extend)\r\n        ourRange = extendRange(doc, ourRange, word.anchor, word.head);\r\n      else\r\n        ourRange = word;\r\n    } else if (type == \"triple\") {\r\n      var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)));\r\n      if (cm.display.shift || doc.extend)\r\n        ourRange = extendRange(doc, ourRange, line.anchor, line.head);\r\n      else\r\n        ourRange = line;\r\n    } else {\r\n      ourRange = extendRange(doc, ourRange, start);\r\n    }\r\n\r\n    if (!addNew) {\r\n      ourIndex = 0;\r\n      setSelection(doc, new Selection([ourRange], 0), sel_mouse);\r\n      startSel = doc.sel;\r\n    } else if (ourIndex == -1) {\r\n      ourIndex = ranges.length;\r\n      setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),\r\n                   {scroll: false, origin: \"*mouse\"});\r\n    } else if (ranges.length > 1 && ranges[ourIndex].empty() && type == \"single\" && !e.shiftKey) {\r\n      setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),\r\n                   {scroll: false, origin: \"*mouse\"});\r\n      startSel = doc.sel;\r\n    } else {\r\n      replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);\r\n    }\r\n\r\n    var lastPos = start;\r\n    function extendTo(pos) {\r\n      if (cmp(lastPos, pos) == 0) return;\r\n      lastPos = pos;\r\n\r\n      if (type == \"rect\") {\r\n        var ranges = [], tabSize = cm.options.tabSize;\r\n        var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);\r\n        var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);\r\n        var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);\r\n        for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));\r\n             line <= end; line++) {\r\n          var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);\r\n          if (left == right)\r\n            ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)));\r\n          else if (text.length > leftPos)\r\n            ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))));\r\n        }\r\n        if (!ranges.length) ranges.push(new Range(start, start));\r\n        setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),\r\n                     {origin: \"*mouse\", scroll: false});\r\n        cm.scrollIntoView(pos);\r\n      } else {\r\n        var oldRange = ourRange;\r\n        var anchor = oldRange.anchor, head = pos;\r\n        if (type != \"single\") {\r\n          if (type == \"double\")\r\n            var range = cm.findWordAt(pos);\r\n          else\r\n            var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));\r\n          if (cmp(range.anchor, anchor) > 0) {\r\n            head = range.head;\r\n            anchor = minPos(oldRange.from(), range.anchor);\r\n          } else {\r\n            head = range.anchor;\r\n            anchor = maxPos(oldRange.to(), range.head);\r\n          }\r\n        }\r\n        var ranges = startSel.ranges.slice(0);\r\n        ranges[ourIndex] = new Range(clipPos(doc, anchor), head);\r\n        setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse);\r\n      }\r\n    }\r\n\r\n    var editorSize = display.wrapper.getBoundingClientRect();\r\n    // Used to ensure timeout re-tries don't fire when another extend\r\n    // happened in the meantime (clearTimeout isn't reliable -- at\r\n    // least on Chrome, the timeouts still happen even when cleared,\r\n    // if the clear happens after their scheduled firing time).\r\n    var counter = 0;\r\n\r\n    function extend(e) {\r\n      var curCount = ++counter;\r\n      var cur = posFromMouse(cm, e, true, type == \"rect\");\r\n      if (!cur) return;\r\n      if (cmp(cur, lastPos) != 0) {\r\n        cm.curOp.focus = activeElt();\r\n        extendTo(cur);\r\n        var visible = visibleLines(display, doc);\r\n        if (cur.line >= visible.to || cur.line < visible.from)\r\n          setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);\r\n      } else {\r\n        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;\r\n        if (outside) setTimeout(operation(cm, function() {\r\n          if (counter != curCount) return;\r\n          display.scroller.scrollTop += outside;\r\n          extend(e);\r\n        }), 50);\r\n      }\r\n    }\r\n\r\n    function done(e) {\r\n      cm.state.selectingText = false;\r\n      counter = Infinity;\r\n      e_preventDefault(e);\r\n      display.input.focus();\r\n      off(document, \"mousemove\", move);\r\n      off(document, \"mouseup\", up);\r\n      doc.history.lastSelOrigin = null;\r\n    }\r\n\r\n    var move = operation(cm, function(e) {\r\n      if (!e_button(e)) done(e);\r\n      else extend(e);\r\n    });\r\n    var up = operation(cm, done);\r\n    cm.state.selectingText = up;\r\n    on(document, \"mousemove\", move);\r\n    on(document, \"mouseup\", up);\r\n  }\r\n\r\n  // Determines whether an event happened in the gutter, and fires the\r\n  // handlers for the corresponding event.\r\n  function gutterEvent(cm, e, type, prevent) {\r\n    try { var mX = e.clientX, mY = e.clientY; }\r\n    catch(e) { return false; }\r\n    if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false;\r\n    if (prevent) e_preventDefault(e);\r\n\r\n    var display = cm.display;\r\n    var lineBox = display.lineDiv.getBoundingClientRect();\r\n\r\n    if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e);\r\n    mY -= lineBox.top - display.viewOffset;\r\n\r\n    for (var i = 0; i < cm.options.gutters.length; ++i) {\r\n      var g = display.gutters.childNodes[i];\r\n      if (g && g.getBoundingClientRect().right >= mX) {\r\n        var line = lineAtHeight(cm.doc, mY);\r\n        var gutter = cm.options.gutters[i];\r\n        signal(cm, type, cm, line, gutter, e);\r\n        return e_defaultPrevented(e);\r\n      }\r\n    }\r\n  }\r\n\r\n  function clickInGutter(cm, e) {\r\n    return gutterEvent(cm, e, \"gutterClick\", true);\r\n  }\r\n\r\n  // Kludge to work around strange IE behavior where it'll sometimes\r\n  // re-fire a series of drag-related events right after the drop (#1551)\r\n  var lastDrop = 0;\r\n\r\n  function onDrop(e) {\r\n    var cm = this;\r\n    clearDragCursor(cm);\r\n    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))\r\n      return;\r\n    e_preventDefault(e);\r\n    if (ie) lastDrop = +new Date;\r\n    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;\r\n    if (!pos || isReadOnly(cm)) return;\r\n    // Might be a file drop, in which case we simply extract the text\r\n    // and insert it.\r\n    if (files && files.length && window.FileReader && window.File) {\r\n      var n = files.length, text = Array(n), read = 0;\r\n      var loadFile = function(file, i) {\r\n        if (cm.options.allowDropFileTypes &&\r\n            indexOf(cm.options.allowDropFileTypes, file.type) == -1)\r\n          return;\r\n\r\n        var reader = new FileReader;\r\n        reader.onload = operation(cm, function() {\r\n          var content = reader.result;\r\n          if (/[\\x00-\\x08\\x0e-\\x1f]{2}/.test(content)) content = \"\";\r\n          text[i] = content;\r\n          if (++read == n) {\r\n            pos = clipPos(cm.doc, pos);\r\n            var change = {from: pos, to: pos,\r\n                          text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())),\r\n                          origin: \"paste\"};\r\n            makeChange(cm.doc, change);\r\n            setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));\r\n          }\r\n        });\r\n        reader.readAsText(file);\r\n      };\r\n      for (var i = 0; i < n; ++i) loadFile(files[i], i);\r\n    } else { // Normal drop\r\n      // Don't do a replace if the drop happened inside of the selected text.\r\n      if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {\r\n        cm.state.draggingText(e);\r\n        // Ensure the editor is re-focused\r\n        setTimeout(function() {cm.display.input.focus();}, 20);\r\n        return;\r\n      }\r\n      try {\r\n        var text = e.dataTransfer.getData(\"Text\");\r\n        if (text) {\r\n          if (cm.state.draggingText && !(mac ? e.altKey : e.ctrlKey))\r\n            var selected = cm.listSelections();\r\n          setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));\r\n          if (selected) for (var i = 0; i < selected.length; ++i)\r\n            replaceRange(cm.doc, \"\", selected[i].anchor, selected[i].head, \"drag\");\r\n          cm.replaceSelection(text, \"around\", \"paste\");\r\n          cm.display.input.focus();\r\n        }\r\n      }\r\n      catch(e){}\r\n    }\r\n  }\r\n\r\n  function onDragStart(cm, e) {\r\n    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }\r\n    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;\r\n\r\n    e.dataTransfer.setData(\"Text\", cm.getSelection());\r\n\r\n    // Use dummy image instead of default browsers image.\r\n    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.\r\n    if (e.dataTransfer.setDragImage && !safari) {\r\n      var img = elt(\"img\", null, null, \"position: fixed; left: 0; top: 0;\");\r\n      img.src = \"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\";\r\n      if (presto) {\r\n        img.width = img.height = 1;\r\n        cm.display.wrapper.appendChild(img);\r\n        // Force a relayout, or Opera won't use our image for some obscure reason\r\n        img._top = img.offsetTop;\r\n      }\r\n      e.dataTransfer.setDragImage(img, 0, 0);\r\n      if (presto) img.parentNode.removeChild(img);\r\n    }\r\n  }\r\n\r\n  function onDragOver(cm, e) {\r\n    var pos = posFromMouse(cm, e);\r\n    if (!pos) return;\r\n    var frag = document.createDocumentFragment();\r\n    drawSelectionCursor(cm, pos, frag);\r\n    if (!cm.display.dragCursor) {\r\n      cm.display.dragCursor = elt(\"div\", null, \"CodeMirror-cursors CodeMirror-dragcursors\");\r\n      cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv);\r\n    }\r\n    removeChildrenAndAdd(cm.display.dragCursor, frag);\r\n  }\r\n\r\n  function clearDragCursor(cm) {\r\n    if (cm.display.dragCursor) {\r\n      cm.display.lineSpace.removeChild(cm.display.dragCursor);\r\n      cm.display.dragCursor = null;\r\n    }\r\n  }\r\n\r\n  // SCROLL EVENTS\r\n\r\n  // Sync the scrollable area and scrollbars, ensure the viewport\r\n  // covers the visible area.\r\n  function setScrollTop(cm, val) {\r\n    if (Math.abs(cm.doc.scrollTop - val) < 2) return;\r\n    cm.doc.scrollTop = val;\r\n    if (!gecko) updateDisplaySimple(cm, {top: val});\r\n    if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;\r\n    cm.display.scrollbars.setScrollTop(val);\r\n    if (gecko) updateDisplaySimple(cm);\r\n    startWorker(cm, 100);\r\n  }\r\n  // Sync scroller and scrollbar, ensure the gutter elements are\r\n  // aligned.\r\n  function setScrollLeft(cm, val, isScroller) {\r\n    if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;\r\n    val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);\r\n    cm.doc.scrollLeft = val;\r\n    alignHorizontally(cm);\r\n    if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;\r\n    cm.display.scrollbars.setScrollLeft(val);\r\n  }\r\n\r\n  // Since the delta values reported on mouse wheel events are\r\n  // unstandardized between browsers and even browser versions, and\r\n  // generally horribly unpredictable, this code starts by measuring\r\n  // the scroll effect that the first few mouse wheel events have,\r\n  // and, from that, detects the way it can convert deltas to pixel\r\n  // offsets afterwards.\r\n  //\r\n  // The reason we want to know the amount a wheel event will scroll\r\n  // is that it gives us a chance to update the display before the\r\n  // actual scrolling happens, reducing flickering.\r\n\r\n  var wheelSamples = 0, wheelPixelsPerUnit = null;\r\n  // Fill in a browser-detected starting value on browsers where we\r\n  // know one. These don't have to be accurate -- the result of them\r\n  // being wrong would just be a slight flicker on the first wheel\r\n  // scroll (if it is large enough).\r\n  if (ie) wheelPixelsPerUnit = -.53;\r\n  else if (gecko) wheelPixelsPerUnit = 15;\r\n  else if (chrome) wheelPixelsPerUnit = -.7;\r\n  else if (safari) wheelPixelsPerUnit = -1/3;\r\n\r\n  var wheelEventDelta = function(e) {\r\n    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;\r\n    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;\r\n    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;\r\n    else if (dy == null) dy = e.wheelDelta;\r\n    return {x: dx, y: dy};\r\n  };\r\n  CodeMirror.wheelEventPixels = function(e) {\r\n    var delta = wheelEventDelta(e);\r\n    delta.x *= wheelPixelsPerUnit;\r\n    delta.y *= wheelPixelsPerUnit;\r\n    return delta;\r\n  };\r\n\r\n  function onScrollWheel(cm, e) {\r\n    var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y;\r\n\r\n    var display = cm.display, scroll = display.scroller;\r\n    // Quit if there's nothing to scroll here\r\n    var canScrollX = scroll.scrollWidth > scroll.clientWidth;\r\n    var canScrollY = scroll.scrollHeight > scroll.clientHeight;\r\n    if (!(dx && canScrollX || dy && canScrollY)) return;\r\n\r\n    // Webkit browsers on OS X abort momentum scrolls when the target\r\n    // of the scroll event is removed from the scrollable element.\r\n    // This hack (see related code in patchDisplay) makes sure the\r\n    // element is kept around.\r\n    if (dy && mac && webkit) {\r\n      outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {\r\n        for (var i = 0; i < view.length; i++) {\r\n          if (view[i].node == cur) {\r\n            cm.display.currentWheelTarget = cur;\r\n            break outer;\r\n          }\r\n        }\r\n      }\r\n    }\r\n\r\n    // On some browsers, horizontal scrolling will cause redraws to\r\n    // happen before the gutter has been realigned, causing it to\r\n    // wriggle around in a most unseemly way. When we have an\r\n    // estimated pixels/delta value, we just handle horizontal\r\n    // scrolling entirely here. It'll be slightly off from native, but\r\n    // better than glitching out.\r\n    if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {\r\n      if (dy && canScrollY)\r\n        setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));\r\n      setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));\r\n      // Only prevent default scrolling if vertical scrolling is\r\n      // actually possible. Otherwise, it causes vertical scroll\r\n      // jitter on OSX trackpads when deltaX is small and deltaY\r\n      // is large (issue #3579)\r\n      if (!dy || (dy && canScrollY))\r\n        e_preventDefault(e);\r\n      display.wheelStartX = null; // Abort measurement, if in progress\r\n      return;\r\n    }\r\n\r\n    // 'Project' the visible viewport to cover the area that is being\r\n    // scrolled into view (if we know enough to estimate it).\r\n    if (dy && wheelPixelsPerUnit != null) {\r\n      var pixels = dy * wheelPixelsPerUnit;\r\n      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;\r\n      if (pixels < 0) top = Math.max(0, top + pixels - 50);\r\n      else bot = Math.min(cm.doc.height, bot + pixels + 50);\r\n      updateDisplaySimple(cm, {top: top, bottom: bot});\r\n    }\r\n\r\n    if (wheelSamples < 20) {\r\n      if (display.wheelStartX == null) {\r\n        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;\r\n        display.wheelDX = dx; display.wheelDY = dy;\r\n        setTimeout(function() {\r\n          if (display.wheelStartX == null) return;\r\n          var movedX = scroll.scrollLeft - display.wheelStartX;\r\n          var movedY = scroll.scrollTop - display.wheelStartY;\r\n          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||\r\n            (movedX && display.wheelDX && movedX / display.wheelDX);\r\n          display.wheelStartX = display.wheelStartY = null;\r\n          if (!sample) return;\r\n          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);\r\n          ++wheelSamples;\r\n        }, 200);\r\n      } else {\r\n        display.wheelDX += dx; display.wheelDY += dy;\r\n      }\r\n    }\r\n  }\r\n\r\n  // KEY EVENTS\r\n\r\n  // Run a handler that was bound to a key.\r\n  function doHandleBinding(cm, bound, dropShift) {\r\n    if (typeof bound == \"string\") {\r\n      bound = commands[bound];\r\n      if (!bound) return false;\r\n    }\r\n    // Ensure previous input has been read, so that the handler sees a\r\n    // consistent view of the document\r\n    cm.display.input.ensurePolled();\r\n    var prevShift = cm.display.shift, done = false;\r\n    try {\r\n      if (isReadOnly(cm)) cm.state.suppressEdits = true;\r\n      if (dropShift) cm.display.shift = false;\r\n      done = bound(cm) != Pass;\r\n    } finally {\r\n      cm.display.shift = prevShift;\r\n      cm.state.suppressEdits = false;\r\n    }\r\n    return done;\r\n  }\r\n\r\n  function lookupKeyForEditor(cm, name, handle) {\r\n    for (var i = 0; i < cm.state.keyMaps.length; i++) {\r\n      var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);\r\n      if (result) return result;\r\n    }\r\n    return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))\r\n      || lookupKey(name, cm.options.keyMap, handle, cm);\r\n  }\r\n\r\n  var stopSeq = new Delayed;\r\n  function dispatchKey(cm, name, e, handle) {\r\n    var seq = cm.state.keySeq;\r\n    if (seq) {\r\n      if (isModifierKey(name)) return \"handled\";\r\n      stopSeq.set(50, function() {\r\n        if (cm.state.keySeq == seq) {\r\n          cm.state.keySeq = null;\r\n          cm.display.input.reset();\r\n        }\r\n      });\r\n      name = seq + \" \" + name;\r\n    }\r\n    var result = lookupKeyForEditor(cm, name, handle);\r\n\r\n    if (result == \"multi\")\r\n      cm.state.keySeq = name;\r\n    if (result == \"handled\")\r\n      signalLater(cm, \"keyHandled\", cm, name, e);\r\n\r\n    if (result == \"handled\" || result == \"multi\") {\r\n      e_preventDefault(e);\r\n      restartBlink(cm);\r\n    }\r\n\r\n    if (seq && !result && /\\'$/.test(name)) {\r\n      e_preventDefault(e);\r\n      return true;\r\n    }\r\n    return !!result;\r\n  }\r\n\r\n  // Handle a key from the keydown event.\r\n  function handleKeyBinding(cm, e) {\r\n    var name = keyName(e, true);\r\n    if (!name) return false;\r\n\r\n    if (e.shiftKey && !cm.state.keySeq) {\r\n      // First try to resolve full name (including 'Shift-'). Failing\r\n      // that, see if there is a cursor-motion command (starting with\r\n      // 'go') bound to the keyname without 'Shift-'.\r\n      return dispatchKey(cm, \"Shift-\" + name, e, function(b) {return doHandleBinding(cm, b, true);})\r\n          || dispatchKey(cm, name, e, function(b) {\r\n               if (typeof b == \"string\" ? /^go[A-Z]/.test(b) : b.motion)\r\n                 return doHandleBinding(cm, b);\r\n             });\r\n    } else {\r\n      return dispatchKey(cm, name, e, function(b) { return doHandleBinding(cm, b); });\r\n    }\r\n  }\r\n\r\n  // Handle a key from the keypress event\r\n  function handleCharBinding(cm, e, ch) {\r\n    return dispatchKey(cm, \"'\" + ch + \"'\", e,\r\n                       function(b) { return doHandleBinding(cm, b, true); });\r\n  }\r\n\r\n  var lastStoppedKey = null;\r\n  function onKeyDown(e) {\r\n    var cm = this;\r\n    cm.curOp.focus = activeElt();\r\n    if (signalDOMEvent(cm, e)) return;\r\n    // IE does strange things with escape.\r\n    if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false;\r\n    var code = e.keyCode;\r\n    cm.display.shift = code == 16 || e.shiftKey;\r\n    var handled = handleKeyBinding(cm, e);\r\n    if (presto) {\r\n      lastStoppedKey = handled ? code : null;\r\n      // Opera has no cut event... we try to at least catch the key combo\r\n      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))\r\n        cm.replaceSelection(\"\", null, \"cut\");\r\n    }\r\n\r\n    // Turn mouse into crosshair when Alt is held on Mac.\r\n    if (code == 18 && !/\\bCodeMirror-crosshair\\b/.test(cm.display.lineDiv.className))\r\n      showCrossHair(cm);\r\n  }\r\n\r\n  function showCrossHair(cm) {\r\n    var lineDiv = cm.display.lineDiv;\r\n    addClass(lineDiv, \"CodeMirror-crosshair\");\r\n\r\n    function up(e) {\r\n      if (e.keyCode == 18 || !e.altKey) {\r\n        rmClass(lineDiv, \"CodeMirror-crosshair\");\r\n        off(document, \"keyup\", up);\r\n        off(document, \"mouseover\", up);\r\n      }\r\n    }\r\n    on(document, \"keyup\", up);\r\n    on(document, \"mouseover\", up);\r\n  }\r\n\r\n  function onKeyUp(e) {\r\n    if (e.keyCode == 16) this.doc.sel.shift = false;\r\n    signalDOMEvent(this, e);\r\n  }\r\n\r\n  function onKeyPress(e) {\r\n    var cm = this;\r\n    if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) return;\r\n    var keyCode = e.keyCode, charCode = e.charCode;\r\n    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}\r\n    if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) return;\r\n    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);\r\n    if (handleCharBinding(cm, e, ch)) return;\r\n    cm.display.input.onKeyPress(e);\r\n  }\r\n\r\n  // FOCUS/BLUR EVENTS\r\n\r\n  function delayBlurEvent(cm) {\r\n    cm.state.delayingBlurEvent = true;\r\n    setTimeout(function() {\r\n      if (cm.state.delayingBlurEvent) {\r\n        cm.state.delayingBlurEvent = false;\r\n        onBlur(cm);\r\n      }\r\n    }, 100);\r\n  }\r\n\r\n  function onFocus(cm) {\r\n    if (cm.state.delayingBlurEvent) cm.state.delayingBlurEvent = false;\r\n\r\n    if (cm.options.readOnly == \"nocursor\") return;\r\n    if (!cm.state.focused) {\r\n      signal(cm, \"focus\", cm);\r\n      cm.state.focused = true;\r\n      addClass(cm.display.wrapper, \"CodeMirror-focused\");\r\n      // This test prevents this from firing when a context\r\n      // menu is closed (since the input reset would kill the\r\n      // select-all detection hack)\r\n      if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {\r\n        cm.display.input.reset();\r\n        if (webkit) setTimeout(function() { cm.display.input.reset(true); }, 20); // Issue #1730\r\n      }\r\n      cm.display.input.receivedFocus();\r\n    }\r\n    restartBlink(cm);\r\n  }\r\n  function onBlur(cm) {\r\n    if (cm.state.delayingBlurEvent) return;\r\n\r\n    if (cm.state.focused) {\r\n      signal(cm, \"blur\", cm);\r\n      cm.state.focused = false;\r\n      rmClass(cm.display.wrapper, \"CodeMirror-focused\");\r\n    }\r\n    clearInterval(cm.display.blinker);\r\n    setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150);\r\n  }\r\n\r\n  // CONTEXT MENU HANDLING\r\n\r\n  // To make the context menu work, we need to briefly unhide the\r\n  // textarea (making it as unobtrusive as possible) to let the\r\n  // right-click take effect on it.\r\n  function onContextMenu(cm, e) {\r\n    if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) return;\r\n    if (signalDOMEvent(cm, e, \"contextmenu\")) return;\r\n    cm.display.input.onContextMenu(e);\r\n  }\r\n\r\n  function contextMenuInGutter(cm, e) {\r\n    if (!hasHandler(cm, \"gutterContextMenu\")) return false;\r\n    return gutterEvent(cm, e, \"gutterContextMenu\", false);\r\n  }\r\n\r\n  // UPDATING\r\n\r\n  // Compute the position of the end of a change (its 'to' property\r\n  // refers to the pre-change end).\r\n  var changeEnd = CodeMirror.changeEnd = function(change) {\r\n    if (!change.text) return change.to;\r\n    return Pos(change.from.line + change.text.length - 1,\r\n               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));\r\n  };\r\n\r\n  // Adjust a position to refer to the post-change position of the\r\n  // same text, or the end of the change if the change covers it.\r\n  function adjustForChange(pos, change) {\r\n    if (cmp(pos, change.from) < 0) return pos;\r\n    if (cmp(pos, change.to) <= 0) return changeEnd(change);\r\n\r\n    var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;\r\n    if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch;\r\n    return Pos(line, ch);\r\n  }\r\n\r\n  function computeSelAfterChange(doc, change) {\r\n    var out = [];\r\n    for (var i = 0; i < doc.sel.ranges.length; i++) {\r\n      var range = doc.sel.ranges[i];\r\n      out.push(new Range(adjustForChange(range.anchor, change),\r\n                         adjustForChange(range.head, change)));\r\n    }\r\n    return normalizeSelection(out, doc.sel.primIndex);\r\n  }\r\n\r\n  function offsetPos(pos, old, nw) {\r\n    if (pos.line == old.line)\r\n      return Pos(nw.line, pos.ch - old.ch + nw.ch);\r\n    else\r\n      return Pos(nw.line + (pos.line - old.line), pos.ch);\r\n  }\r\n\r\n  // Used by replaceSelections to allow moving the selection to the\r\n  // start or around the replaced test. Hint may be \"start\" or \"around\".\r\n  function computeReplacedSel(doc, changes, hint) {\r\n    var out = [];\r\n    var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;\r\n    for (var i = 0; i < changes.length; i++) {\r\n      var change = changes[i];\r\n      var from = offsetPos(change.from, oldPrev, newPrev);\r\n      var to = offsetPos(changeEnd(change), oldPrev, newPrev);\r\n      oldPrev = change.to;\r\n      newPrev = to;\r\n      if (hint == \"around\") {\r\n        var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;\r\n        out[i] = new Range(inv ? to : from, inv ? from : to);\r\n      } else {\r\n        out[i] = new Range(from, from);\r\n      }\r\n    }\r\n    return new Selection(out, doc.sel.primIndex);\r\n  }\r\n\r\n  // Allow \"beforeChange\" event handlers to influence a change\r\n  function filterChange(doc, change, update) {\r\n    var obj = {\r\n      canceled: false,\r\n      from: change.from,\r\n      to: change.to,\r\n      text: change.text,\r\n      origin: change.origin,\r\n      cancel: function() { this.canceled = true; }\r\n    };\r\n    if (update) obj.update = function(from, to, text, origin) {\r\n      if (from) this.from = clipPos(doc, from);\r\n      if (to) this.to = clipPos(doc, to);\r\n      if (text) this.text = text;\r\n      if (origin !== undefined) this.origin = origin;\r\n    };\r\n    signal(doc, \"beforeChange\", doc, obj);\r\n    if (doc.cm) signal(doc.cm, \"beforeChange\", doc.cm, obj);\r\n\r\n    if (obj.canceled) return null;\r\n    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};\r\n  }\r\n\r\n  // Apply a change to a document, and add it to the document's\r\n  // history, and propagating it to all linked documents.\r\n  function makeChange(doc, change, ignoreReadOnly) {\r\n    if (doc.cm) {\r\n      if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly);\r\n      if (doc.cm.state.suppressEdits) return;\r\n    }\r\n\r\n    if (hasHandler(doc, \"beforeChange\") || doc.cm && hasHandler(doc.cm, \"beforeChange\")) {\r\n      change = filterChange(doc, change, true);\r\n      if (!change) return;\r\n    }\r\n\r\n    // Possibly split or suppress the update based on the presence\r\n    // of read-only spans in its range.\r\n    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);\r\n    if (split) {\r\n      for (var i = split.length - 1; i >= 0; --i)\r\n        makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [\"\"] : change.text});\r\n    } else {\r\n      makeChangeInner(doc, change);\r\n    }\r\n  }\r\n\r\n  function makeChangeInner(doc, change) {\r\n    if (change.text.length == 1 && change.text[0] == \"\" && cmp(change.from, change.to) == 0) return;\r\n    var selAfter = computeSelAfterChange(doc, change);\r\n    addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);\r\n\r\n    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));\r\n    var rebased = [];\r\n\r\n    linkedDocs(doc, function(doc, sharedHist) {\r\n      if (!sharedHist && indexOf(rebased, doc.history) == -1) {\r\n        rebaseHist(doc.history, change);\r\n        rebased.push(doc.history);\r\n      }\r\n      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));\r\n    });\r\n  }\r\n\r\n  // Revert a change stored in a document's history.\r\n  function makeChangeFromHistory(doc, type, allowSelectionOnly) {\r\n    if (doc.cm && doc.cm.state.suppressEdits) return;\r\n\r\n    var hist = doc.history, event, selAfter = doc.sel;\r\n    var source = type == \"undo\" ? hist.done : hist.undone, dest = type == \"undo\" ? hist.undone : hist.done;\r\n\r\n    // Verify that there is a useable event (so that ctrl-z won't\r\n    // needlessly clear selection events)\r\n    for (var i = 0; i < source.length; i++) {\r\n      event = source[i];\r\n      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)\r\n        break;\r\n    }\r\n    if (i == source.length) return;\r\n    hist.lastOrigin = hist.lastSelOrigin = null;\r\n\r\n    for (;;) {\r\n      event = source.pop();\r\n      if (event.ranges) {\r\n        pushSelectionToHistory(event, dest);\r\n        if (allowSelectionOnly && !event.equals(doc.sel)) {\r\n          setSelection(doc, event, {clearRedo: false});\r\n          return;\r\n        }\r\n        selAfter = event;\r\n      }\r\n      else break;\r\n    }\r\n\r\n    // Build up a reverse change object to add to the opposite history\r\n    // stack (redo when undoing, and vice versa).\r\n    var antiChanges = [];\r\n    pushSelectionToHistory(selAfter, dest);\r\n    dest.push({changes: antiChanges, generation: hist.generation});\r\n    hist.generation = event.generation || ++hist.maxGeneration;\r\n\r\n    var filter = hasHandler(doc, \"beforeChange\") || doc.cm && hasHandler(doc.cm, \"beforeChange\");\r\n\r\n    for (var i = event.changes.length - 1; i >= 0; --i) {\r\n      var change = event.changes[i];\r\n      change.origin = type;\r\n      if (filter && !filterChange(doc, change, false)) {\r\n        source.length = 0;\r\n        return;\r\n      }\r\n\r\n      antiChanges.push(historyChangeFromChange(doc, change));\r\n\r\n      var after = i ? computeSelAfterChange(doc, change) : lst(source);\r\n      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));\r\n      if (!i && doc.cm) doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)});\r\n      var rebased = [];\r\n\r\n      // Propagate to the linked documents\r\n      linkedDocs(doc, function(doc, sharedHist) {\r\n        if (!sharedHist && indexOf(rebased, doc.history) == -1) {\r\n          rebaseHist(doc.history, change);\r\n          rebased.push(doc.history);\r\n        }\r\n        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));\r\n      });\r\n    }\r\n  }\r\n\r\n  // Sub-views need their line numbers shifted when text is added\r\n  // above or below them in the parent document.\r\n  function shiftDoc(doc, distance) {\r\n    if (distance == 0) return;\r\n    doc.first += distance;\r\n    doc.sel = new Selection(map(doc.sel.ranges, function(range) {\r\n      return new Range(Pos(range.anchor.line + distance, range.anchor.ch),\r\n                       Pos(range.head.line + distance, range.head.ch));\r\n    }), doc.sel.primIndex);\r\n    if (doc.cm) {\r\n      regChange(doc.cm, doc.first, doc.first - distance, distance);\r\n      for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)\r\n        regLineChange(doc.cm, l, \"gutter\");\r\n    }\r\n  }\r\n\r\n  // More lower-level change function, handling only a single document\r\n  // (not linked ones).\r\n  function makeChangeSingleDoc(doc, change, selAfter, spans) {\r\n    if (doc.cm && !doc.cm.curOp)\r\n      return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);\r\n\r\n    if (change.to.line < doc.first) {\r\n      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));\r\n      return;\r\n    }\r\n    if (change.from.line > doc.lastLine()) return;\r\n\r\n    // Clip the change to the size of this doc\r\n    if (change.from.line < doc.first) {\r\n      var shift = change.text.length - 1 - (doc.first - change.from.line);\r\n      shiftDoc(doc, shift);\r\n      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),\r\n                text: [lst(change.text)], origin: change.origin};\r\n    }\r\n    var last = doc.lastLine();\r\n    if (change.to.line > last) {\r\n      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),\r\n                text: [change.text[0]], origin: change.origin};\r\n    }\r\n\r\n    change.removed = getBetween(doc, change.from, change.to);\r\n\r\n    if (!selAfter) selAfter = computeSelAfterChange(doc, change);\r\n    if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);\r\n    else updateDoc(doc, change, spans);\r\n    setSelectionNoUndo(doc, selAfter, sel_dontScroll);\r\n  }\r\n\r\n  // Handle the interaction of a change to a document with the editor\r\n  // that this document is part of.\r\n  function makeChangeSingleDocInEditor(cm, change, spans) {\r\n    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;\r\n\r\n    var recomputeMaxLength = false, checkWidthStart = from.line;\r\n    if (!cm.options.lineWrapping) {\r\n      checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));\r\n      doc.iter(checkWidthStart, to.line + 1, function(line) {\r\n        if (line == display.maxLine) {\r\n          recomputeMaxLength = true;\r\n          return true;\r\n        }\r\n      });\r\n    }\r\n\r\n    if (doc.sel.contains(change.from, change.to) > -1)\r\n      signalCursorActivity(cm);\r\n\r\n    updateDoc(doc, change, spans, estimateHeight(cm));\r\n\r\n    if (!cm.options.lineWrapping) {\r\n      doc.iter(checkWidthStart, from.line + change.text.length, function(line) {\r\n        var len = lineLength(line);\r\n        if (len > display.maxLineLength) {\r\n          display.maxLine = line;\r\n          display.maxLineLength = len;\r\n          display.maxLineChanged = true;\r\n          recomputeMaxLength = false;\r\n        }\r\n      });\r\n      if (recomputeMaxLength) cm.curOp.updateMaxLine = true;\r\n    }\r\n\r\n    // Adjust frontier, schedule worker\r\n    doc.frontier = Math.min(doc.frontier, from.line);\r\n    startWorker(cm, 400);\r\n\r\n    var lendiff = change.text.length - (to.line - from.line) - 1;\r\n    // Remember that these lines changed, for updating the display\r\n    if (change.full)\r\n      regChange(cm);\r\n    else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))\r\n      regLineChange(cm, from.line, \"text\");\r\n    else\r\n      regChange(cm, from.line, to.line + 1, lendiff);\r\n\r\n    var changesHandler = hasHandler(cm, \"changes\"), changeHandler = hasHandler(cm, \"change\");\r\n    if (changeHandler || changesHandler) {\r\n      var obj = {\r\n        from: from, to: to,\r\n        text: change.text,\r\n        removed: change.removed,\r\n        origin: change.origin\r\n      };\r\n      if (changeHandler) signalLater(cm, \"change\", cm, obj);\r\n      if (changesHandler) (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj);\r\n    }\r\n    cm.display.selForContextMenu = null;\r\n  }\r\n\r\n  function replaceRange(doc, code, from, to, origin) {\r\n    if (!to) to = from;\r\n    if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; }\r\n    if (typeof code == \"string\") code = doc.splitLines(code);\r\n    makeChange(doc, {from: from, to: to, text: code, origin: origin});\r\n  }\r\n\r\n  // SCROLLING THINGS INTO VIEW\r\n\r\n  // If an editor sits on the top or bottom of the window, partially\r\n  // scrolled out of view, this ensures that the cursor is visible.\r\n  function maybeScrollWindow(cm, coords) {\r\n    if (signalDOMEvent(cm, \"scrollCursorIntoView\")) return;\r\n\r\n    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;\r\n    if (coords.top + box.top < 0) doScroll = true;\r\n    else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;\r\n    if (doScroll != null && !phantom) {\r\n      var scrollNode = elt(\"div\", \"\\u200b\", null, \"position: absolute; top: \" +\r\n                           (coords.top - display.viewOffset - paddingTop(cm.display)) + \"px; height: \" +\r\n                           (coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + \"px; left: \" +\r\n                           coords.left + \"px; width: 2px;\");\r\n      cm.display.lineSpace.appendChild(scrollNode);\r\n      scrollNode.scrollIntoView(doScroll);\r\n      cm.display.lineSpace.removeChild(scrollNode);\r\n    }\r\n  }\r\n\r\n  // Scroll a given position into view (immediately), verifying that\r\n  // it actually became visible (as line heights are accurately\r\n  // measured, the position of something may 'drift' during drawing).\r\n  function scrollPosIntoView(cm, pos, end, margin) {\r\n    if (margin == null) margin = 0;\r\n    for (var limit = 0; limit < 5; limit++) {\r\n      var changed = false, coords = cursorCoords(cm, pos);\r\n      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);\r\n      var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),\r\n                                         Math.min(coords.top, endCoords.top) - margin,\r\n                                         Math.max(coords.left, endCoords.left),\r\n                                         Math.max(coords.bottom, endCoords.bottom) + margin);\r\n      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;\r\n      if (scrollPos.scrollTop != null) {\r\n        setScrollTop(cm, scrollPos.scrollTop);\r\n        if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;\r\n      }\r\n      if (scrollPos.scrollLeft != null) {\r\n        setScrollLeft(cm, scrollPos.scrollLeft);\r\n        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;\r\n      }\r\n      if (!changed) break;\r\n    }\r\n    return coords;\r\n  }\r\n\r\n  // Scroll a given set of coordinates into view (immediately).\r\n  function scrollIntoView(cm, x1, y1, x2, y2) {\r\n    var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);\r\n    if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);\r\n    if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);\r\n  }\r\n\r\n  // Calculate a new scroll position needed to scroll the given\r\n  // rectangle into view. Returns an object with scrollTop and\r\n  // scrollLeft properties. When these are undefined, the\r\n  // vertical/horizontal position does not need to be adjusted.\r\n  function calculateScrollPos(cm, x1, y1, x2, y2) {\r\n    var display = cm.display, snapMargin = textHeight(cm.display);\r\n    if (y1 < 0) y1 = 0;\r\n    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;\r\n    var screen = displayHeight(cm), result = {};\r\n    if (y2 - y1 > screen) y2 = y1 + screen;\r\n    var docBottom = cm.doc.height + paddingVert(display);\r\n    var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;\r\n    if (y1 < screentop) {\r\n      result.scrollTop = atTop ? 0 : y1;\r\n    } else if (y2 > screentop + screen) {\r\n      var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);\r\n      if (newTop != screentop) result.scrollTop = newTop;\r\n    }\r\n\r\n    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;\r\n    var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0);\r\n    var tooWide = x2 - x1 > screenw;\r\n    if (tooWide) x2 = x1 + screenw;\r\n    if (x1 < 10)\r\n      result.scrollLeft = 0;\r\n    else if (x1 < screenleft)\r\n      result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10));\r\n    else if (x2 > screenw + screenleft - 3)\r\n      result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw;\r\n    return result;\r\n  }\r\n\r\n  // Store a relative adjustment to the scroll position in the current\r\n  // operation (to be applied when the operation finishes).\r\n  function addToScrollPos(cm, left, top) {\r\n    if (left != null || top != null) resolveScrollToPos(cm);\r\n    if (left != null)\r\n      cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left;\r\n    if (top != null)\r\n      cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;\r\n  }\r\n\r\n  // Make sure that at the end of the operation the current cursor is\r\n  // shown.\r\n  function ensureCursorVisible(cm) {\r\n    resolveScrollToPos(cm);\r\n    var cur = cm.getCursor(), from = cur, to = cur;\r\n    if (!cm.options.lineWrapping) {\r\n      from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur;\r\n      to = Pos(cur.line, cur.ch + 1);\r\n    }\r\n    cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true};\r\n  }\r\n\r\n  // When an operation has its scrollToPos property set, and another\r\n  // scroll action is applied before the end of the operation, this\r\n  // 'simulates' scrolling that position into view in a cheap way, so\r\n  // that the effect of intermediate scroll commands is not ignored.\r\n  function resolveScrollToPos(cm) {\r\n    var range = cm.curOp.scrollToPos;\r\n    if (range) {\r\n      cm.curOp.scrollToPos = null;\r\n      var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);\r\n      var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),\r\n                                    Math.min(from.top, to.top) - range.margin,\r\n                                    Math.max(from.right, to.right),\r\n                                    Math.max(from.bottom, to.bottom) + range.margin);\r\n      cm.scrollTo(sPos.scrollLeft, sPos.scrollTop);\r\n    }\r\n  }\r\n\r\n  // API UTILITIES\r\n\r\n  // Indent the given line. The how parameter can be \"smart\",\r\n  // \"add\"/null, \"subtract\", or \"prev\". When aggressive is false\r\n  // (typically set to true for forced single-line indents), empty\r\n  // lines are not indented, and places where the mode returns Pass\r\n  // are left alone.\r\n  function indentLine(cm, n, how, aggressive) {\r\n    var doc = cm.doc, state;\r\n    if (how == null) how = \"add\";\r\n    if (how == \"smart\") {\r\n      // Fall back to \"prev\" when the mode doesn't have an indentation\r\n      // method.\r\n      if (!doc.mode.indent) how = \"prev\";\r\n      else state = getStateBefore(cm, n);\r\n    }\r\n\r\n    var tabSize = cm.options.tabSize;\r\n    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);\r\n    if (line.stateAfter) line.stateAfter = null;\r\n    var curSpaceString = line.text.match(/^\\s*/)[0], indentation;\r\n    if (!aggressive && !/\\S/.test(line.text)) {\r\n      indentation = 0;\r\n      how = \"not\";\r\n    } else if (how == \"smart\") {\r\n      indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);\r\n      if (indentation == Pass || indentation > 150) {\r\n        if (!aggressive) return;\r\n        how = \"prev\";\r\n      }\r\n    }\r\n    if (how == \"prev\") {\r\n      if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);\r\n      else indentation = 0;\r\n    } else if (how == \"add\") {\r\n      indentation = curSpace + cm.options.indentUnit;\r\n    } else if (how == \"subtract\") {\r\n      indentation = curSpace - cm.options.indentUnit;\r\n    } else if (typeof how == \"number\") {\r\n      indentation = curSpace + how;\r\n    }\r\n    indentation = Math.max(0, indentation);\r\n\r\n    var indentString = \"\", pos = 0;\r\n    if (cm.options.indentWithTabs)\r\n      for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += \"\\t\";}\r\n    if (pos < indentation) indentString += spaceStr(indentation - pos);\r\n\r\n    if (indentString != curSpaceString) {\r\n      replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), \"+input\");\r\n      line.stateAfter = null;\r\n      return true;\r\n    } else {\r\n      // Ensure that, if the cursor was in the whitespace at the start\r\n      // of the line, it is moved to the end of that space.\r\n      for (var i = 0; i < doc.sel.ranges.length; i++) {\r\n        var range = doc.sel.ranges[i];\r\n        if (range.head.line == n && range.head.ch < curSpaceString.length) {\r\n          var pos = Pos(n, curSpaceString.length);\r\n          replaceOneSelection(doc, i, new Range(pos, pos));\r\n          break;\r\n        }\r\n      }\r\n    }\r\n  }\r\n\r\n  // Utility for applying a change to a line by handle or number,\r\n  // returning the number and optionally registering the line as\r\n  // changed.\r\n  function changeLine(doc, handle, changeType, op) {\r\n    var no = handle, line = handle;\r\n    if (typeof handle == \"number\") line = getLine(doc, clipLine(doc, handle));\r\n    else no = lineNo(handle);\r\n    if (no == null) return null;\r\n    if (op(line, no) && doc.cm) regLineChange(doc.cm, no, changeType);\r\n    return line;\r\n  }\r\n\r\n  // Helper for deleting text near the selection(s), used to implement\r\n  // backspace, delete, and similar functionality.\r\n  function deleteNearSelection(cm, compute) {\r\n    var ranges = cm.doc.sel.ranges, kill = [];\r\n    // Build up a set of ranges to kill first, merging overlapping\r\n    // ranges.\r\n    for (var i = 0; i < ranges.length; i++) {\r\n      var toKill = compute(ranges[i]);\r\n      while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {\r\n        var replaced = kill.pop();\r\n        if (cmp(replaced.from, toKill.from) < 0) {\r\n          toKill.from = replaced.from;\r\n          break;\r\n        }\r\n      }\r\n      kill.push(toKill);\r\n    }\r\n    // Next, remove those actual ranges.\r\n    runInOp(cm, function() {\r\n      for (var i = kill.length - 1; i >= 0; i--)\r\n        replaceRange(cm.doc, \"\", kill[i].from, kill[i].to, \"+delete\");\r\n      ensureCursorVisible(cm);\r\n    });\r\n  }\r\n\r\n  // Used for horizontal relative motion. Dir is -1 or 1 (left or\r\n  // right), unit can be \"char\", \"column\" (like char, but doesn't\r\n  // cross line boundaries), \"word\" (across next word), or \"group\" (to\r\n  // the start of next group of word or non-word-non-whitespace\r\n  // chars). The visually param controls whether, in right-to-left\r\n  // text, direction 1 means to move towards the next index in the\r\n  // string, or towards the character to the right of the current\r\n  // position. The resulting position will have a hitSide=true\r\n  // property if it reached the end of the document.\r\n  function findPosH(doc, pos, dir, unit, visually) {\r\n    var line = pos.line, ch = pos.ch, origDir = dir;\r\n    var lineObj = getLine(doc, line);\r\n    var possible = true;\r\n    function findNextLine() {\r\n      var l = line + dir;\r\n      if (l < doc.first || l >= doc.first + doc.size) return (possible = false);\r\n      line = l;\r\n      return lineObj = getLine(doc, l);\r\n    }\r\n    function moveOnce(boundToLine) {\r\n      var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);\r\n      if (next == null) {\r\n        if (!boundToLine && findNextLine()) {\r\n          if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);\r\n          else ch = dir < 0 ? lineObj.text.length : 0;\r\n        } else return (possible = false);\r\n      } else ch = next;\r\n      return true;\r\n    }\r\n\r\n    if (unit == \"char\") moveOnce();\r\n    else if (unit == \"column\") moveOnce(true);\r\n    else if (unit == \"word\" || unit == \"group\") {\r\n      var sawType = null, group = unit == \"group\";\r\n      var helper = doc.cm && doc.cm.getHelper(pos, \"wordChars\");\r\n      for (var first = true;; first = false) {\r\n        if (dir < 0 && !moveOnce(!first)) break;\r\n        var cur = lineObj.text.charAt(ch) || \"\\n\";\r\n        var type = isWordChar(cur, helper) ? \"w\"\r\n          : group && cur == \"\\n\" ? \"n\"\r\n          : !group || /\\s/.test(cur) ? null\r\n          : \"p\";\r\n        if (group && !first && !type) type = \"s\";\r\n        if (sawType && sawType != type) {\r\n          if (dir < 0) {dir = 1; moveOnce();}\r\n          break;\r\n        }\r\n\r\n        if (type) sawType = type;\r\n        if (dir > 0 && !moveOnce(!first)) break;\r\n      }\r\n    }\r\n    var result = skipAtomic(doc, Pos(line, ch), pos, origDir, true);\r\n    if (!possible) result.hitSide = true;\r\n    return result;\r\n  }\r\n\r\n  // For relative vertical movement. Dir may be -1 or 1. Unit can be\r\n  // \"page\" or \"line\". The resulting position will have a hitSide=true\r\n  // property if it reached the end of the document.\r\n  function findPosV(cm, pos, dir, unit) {\r\n    var doc = cm.doc, x = pos.left, y;\r\n    if (unit == \"page\") {\r\n      var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);\r\n      y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));\r\n    } else if (unit == \"line\") {\r\n      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;\r\n    }\r\n    for (;;) {\r\n      var target = coordsChar(cm, x, y);\r\n      if (!target.outside) break;\r\n      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }\r\n      y += dir * 5;\r\n    }\r\n    return target;\r\n  }\r\n\r\n  // EDITOR METHODS\r\n\r\n  // The publicly visible API. Note that methodOp(f) means\r\n  // 'wrap f in an operation, performed on its `this` parameter'.\r\n\r\n  // This is not the complete set of editor methods. Most of the\r\n  // methods defined on the Doc type are also injected into\r\n  // CodeMirror.prototype, for backwards compatibility and\r\n  // convenience.\r\n\r\n  CodeMirror.prototype = {\r\n    constructor: CodeMirror,\r\n    focus: function(){window.focus(); this.display.input.focus();},\r\n\r\n    setOption: function(option, value) {\r\n      var options = this.options, old = options[option];\r\n      if (options[option] == value && option != \"mode\") return;\r\n      options[option] = value;\r\n      if (optionHandlers.hasOwnProperty(option))\r\n        operation(this, optionHandlers[option])(this, value, old);\r\n    },\r\n\r\n    getOption: function(option) {return this.options[option];},\r\n    getDoc: function() {return this.doc;},\r\n\r\n    addKeyMap: function(map, bottom) {\r\n      this.state.keyMaps[bottom ? \"push\" : \"unshift\"](getKeyMap(map));\r\n    },\r\n    removeKeyMap: function(map) {\r\n      var maps = this.state.keyMaps;\r\n      for (var i = 0; i < maps.length; ++i)\r\n        if (maps[i] == map || maps[i].name == map) {\r\n          maps.splice(i, 1);\r\n          return true;\r\n        }\r\n    },\r\n\r\n    addOverlay: methodOp(function(spec, options) {\r\n      var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);\r\n      if (mode.startState) throw new Error(\"Overlays may not be stateful.\");\r\n      this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});\r\n      this.state.modeGen++;\r\n      regChange(this);\r\n    }),\r\n    removeOverlay: methodOp(function(spec) {\r\n      var overlays = this.state.overlays;\r\n      for (var i = 0; i < overlays.length; ++i) {\r\n        var cur = overlays[i].modeSpec;\r\n        if (cur == spec || typeof spec == \"string\" && cur.name == spec) {\r\n          overlays.splice(i, 1);\r\n          this.state.modeGen++;\r\n          regChange(this);\r\n          return;\r\n        }\r\n      }\r\n    }),\r\n\r\n    indentLine: methodOp(function(n, dir, aggressive) {\r\n      if (typeof dir != \"string\" && typeof dir != \"number\") {\r\n        if (dir == null) dir = this.options.smartIndent ? \"smart\" : \"prev\";\r\n        else dir = dir ? \"add\" : \"subtract\";\r\n      }\r\n      if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);\r\n    }),\r\n    indentSelection: methodOp(function(how) {\r\n      var ranges = this.doc.sel.ranges, end = -1;\r\n      for (var i = 0; i < ranges.length; i++) {\r\n        var range = ranges[i];\r\n        if (!range.empty()) {\r\n          var from = range.from(), to = range.to();\r\n          var start = Math.max(end, from.line);\r\n          end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;\r\n          for (var j = start; j < end; ++j)\r\n            indentLine(this, j, how);\r\n          var newRanges = this.doc.sel.ranges;\r\n          if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)\r\n            replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll);\r\n        } else if (range.head.line > end) {\r\n          indentLine(this, range.head.line, how, true);\r\n          end = range.head.line;\r\n          if (i == this.doc.sel.primIndex) ensureCursorVisible(this);\r\n        }\r\n      }\r\n    }),\r\n\r\n    // Fetch the parser token for a given character. Useful for hacks\r\n    // that want to inspect the mode state (say, for completion).\r\n    getTokenAt: function(pos, precise) {\r\n      return takeToken(this, pos, precise);\r\n    },\r\n\r\n    getLineTokens: function(line, precise) {\r\n      return takeToken(this, Pos(line), precise, true);\r\n    },\r\n\r\n    getTokenTypeAt: function(pos) {\r\n      pos = clipPos(this.doc, pos);\r\n      var styles = getLineStyles(this, getLine(this.doc, pos.line));\r\n      var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;\r\n      var type;\r\n      if (ch == 0) type = styles[2];\r\n      else for (;;) {\r\n        var mid = (before + after) >> 1;\r\n        if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;\r\n        else if (styles[mid * 2 + 1] < ch) before = mid + 1;\r\n        else { type = styles[mid * 2 + 2]; break; }\r\n      }\r\n      var cut = type ? type.indexOf(\"cm-overlay \") : -1;\r\n      return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1);\r\n    },\r\n\r\n    getModeAt: function(pos) {\r\n      var mode = this.doc.mode;\r\n      if (!mode.innerMode) return mode;\r\n      return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;\r\n    },\r\n\r\n    getHelper: function(pos, type) {\r\n      return this.getHelpers(pos, type)[0];\r\n    },\r\n\r\n    getHelpers: function(pos, type) {\r\n      var found = [];\r\n      if (!helpers.hasOwnProperty(type)) return found;\r\n      var help = helpers[type], mode = this.getModeAt(pos);\r\n      if (typeof mode[type] == \"string\") {\r\n        if (help[mode[type]]) found.push(help[mode[type]]);\r\n      } else if (mode[type]) {\r\n        for (var i = 0; i < mode[type].length; i++) {\r\n          var val = help[mode[type][i]];\r\n          if (val) found.push(val);\r\n        }\r\n      } else if (mode.helperType && help[mode.helperType]) {\r\n        found.push(help[mode.helperType]);\r\n      } else if (help[mode.name]) {\r\n        found.push(help[mode.name]);\r\n      }\r\n      for (var i = 0; i < help._global.length; i++) {\r\n        var cur = help._global[i];\r\n        if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)\r\n          found.push(cur.val);\r\n      }\r\n      return found;\r\n    },\r\n\r\n    getStateAfter: function(line, precise) {\r\n      var doc = this.doc;\r\n      line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);\r\n      return getStateBefore(this, line + 1, precise);\r\n    },\r\n\r\n    cursorCoords: function(start, mode) {\r\n      var pos, range = this.doc.sel.primary();\r\n      if (start == null) pos = range.head;\r\n      else if (typeof start == \"object\") pos = clipPos(this.doc, start);\r\n      else pos = start ? range.from() : range.to();\r\n      return cursorCoords(this, pos, mode || \"page\");\r\n    },\r\n\r\n    charCoords: function(pos, mode) {\r\n      return charCoords(this, clipPos(this.doc, pos), mode || \"page\");\r\n    },\r\n\r\n    coordsChar: function(coords, mode) {\r\n      coords = fromCoordSystem(this, coords, mode || \"page\");\r\n      return coordsChar(this, coords.left, coords.top);\r\n    },\r\n\r\n    lineAtHeight: function(height, mode) {\r\n      height = fromCoordSystem(this, {top: height, left: 0}, mode || \"page\").top;\r\n      return lineAtHeight(this.doc, height + this.display.viewOffset);\r\n    },\r\n    heightAtLine: function(line, mode) {\r\n      var end = false, lineObj;\r\n      if (typeof line == \"number\") {\r\n        var last = this.doc.first + this.doc.size - 1;\r\n        if (line < this.doc.first) line = this.doc.first;\r\n        else if (line > last) { line = last; end = true; }\r\n        lineObj = getLine(this.doc, line);\r\n      } else {\r\n        lineObj = line;\r\n      }\r\n      return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || \"page\").top +\r\n        (end ? this.doc.height - heightAtLine(lineObj) : 0);\r\n    },\r\n\r\n    defaultTextHeight: function() { return textHeight(this.display); },\r\n    defaultCharWidth: function() { return charWidth(this.display); },\r\n\r\n    setGutterMarker: methodOp(function(line, gutterID, value) {\r\n      return changeLine(this.doc, line, \"gutter\", function(line) {\r\n        var markers = line.gutterMarkers || (line.gutterMarkers = {});\r\n        markers[gutterID] = value;\r\n        if (!value && isEmpty(markers)) line.gutterMarkers = null;\r\n        return true;\r\n      });\r\n    }),\r\n\r\n    clearGutter: methodOp(function(gutterID) {\r\n      var cm = this, doc = cm.doc, i = doc.first;\r\n      doc.iter(function(line) {\r\n        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {\r\n          line.gutterMarkers[gutterID] = null;\r\n          regLineChange(cm, i, \"gutter\");\r\n          if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;\r\n        }\r\n        ++i;\r\n      });\r\n    }),\r\n\r\n    lineInfo: function(line) {\r\n      if (typeof line == \"number\") {\r\n        if (!isLine(this.doc, line)) return null;\r\n        var n = line;\r\n        line = getLine(this.doc, line);\r\n        if (!line) return null;\r\n      } else {\r\n        var n = lineNo(line);\r\n        if (n == null) return null;\r\n      }\r\n      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,\r\n              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,\r\n              widgets: line.widgets};\r\n    },\r\n\r\n    getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};},\r\n\r\n    addWidget: function(pos, node, scroll, vert, horiz) {\r\n      var display = this.display;\r\n      pos = cursorCoords(this, clipPos(this.doc, pos));\r\n      var top = pos.bottom, left = pos.left;\r\n      node.style.position = \"absolute\";\r\n      node.setAttribute(\"cm-ignore-events\", \"true\");\r\n      this.display.input.setUneditable(node);\r\n      display.sizer.appendChild(node);\r\n      if (vert == \"over\") {\r\n        top = pos.top;\r\n      } else if (vert == \"above\" || vert == \"near\") {\r\n        var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),\r\n        hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);\r\n        // Default to positioning above (if specified and possible); otherwise default to positioning below\r\n        if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)\r\n          top = pos.top - node.offsetHeight;\r\n        else if (pos.bottom + node.offsetHeight <= vspace)\r\n          top = pos.bottom;\r\n        if (left + node.offsetWidth > hspace)\r\n          left = hspace - node.offsetWidth;\r\n      }\r\n      node.style.top = top + \"px\";\r\n      node.style.left = node.style.right = \"\";\r\n      if (horiz == \"right\") {\r\n        left = display.sizer.clientWidth - node.offsetWidth;\r\n        node.style.right = \"0px\";\r\n      } else {\r\n        if (horiz == \"left\") left = 0;\r\n        else if (horiz == \"middle\") left = (display.sizer.clientWidth - node.offsetWidth) / 2;\r\n        node.style.left = left + \"px\";\r\n      }\r\n      if (scroll)\r\n        scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);\r\n    },\r\n\r\n    triggerOnKeyDown: methodOp(onKeyDown),\r\n    triggerOnKeyPress: methodOp(onKeyPress),\r\n    triggerOnKeyUp: onKeyUp,\r\n\r\n    execCommand: function(cmd) {\r\n      if (commands.hasOwnProperty(cmd))\r\n        return commands[cmd].call(null, this);\r\n    },\r\n\r\n    triggerElectric: methodOp(function(text) { triggerElectric(this, text); }),\r\n\r\n    findPosH: function(from, amount, unit, visually) {\r\n      var dir = 1;\r\n      if (amount < 0) { dir = -1; amount = -amount; }\r\n      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {\r\n        cur = findPosH(this.doc, cur, dir, unit, visually);\r\n        if (cur.hitSide) break;\r\n      }\r\n      return cur;\r\n    },\r\n\r\n    moveH: methodOp(function(dir, unit) {\r\n      var cm = this;\r\n      cm.extendSelectionsBy(function(range) {\r\n        if (cm.display.shift || cm.doc.extend || range.empty())\r\n          return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually);\r\n        else\r\n          return dir < 0 ? range.from() : range.to();\r\n      }, sel_move);\r\n    }),\r\n\r\n    deleteH: methodOp(function(dir, unit) {\r\n      var sel = this.doc.sel, doc = this.doc;\r\n      if (sel.somethingSelected())\r\n        doc.replaceSelection(\"\", null, \"+delete\");\r\n      else\r\n        deleteNearSelection(this, function(range) {\r\n          var other = findPosH(doc, range.head, dir, unit, false);\r\n          return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};\r\n        });\r\n    }),\r\n\r\n    findPosV: function(from, amount, unit, goalColumn) {\r\n      var dir = 1, x = goalColumn;\r\n      if (amount < 0) { dir = -1; amount = -amount; }\r\n      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {\r\n        var coords = cursorCoords(this, cur, \"div\");\r\n        if (x == null) x = coords.left;\r\n        else coords.left = x;\r\n        cur = findPosV(this, coords, dir, unit);\r\n        if (cur.hitSide) break;\r\n      }\r\n      return cur;\r\n    },\r\n\r\n    moveV: methodOp(function(dir, unit) {\r\n      var cm = this, doc = this.doc, goals = [];\r\n      var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected();\r\n      doc.extendSelectionsBy(function(range) {\r\n        if (collapse)\r\n          return dir < 0 ? range.from() : range.to();\r\n        var headPos = cursorCoords(cm, range.head, \"div\");\r\n        if (range.goalColumn != null) headPos.left = range.goalColumn;\r\n        goals.push(headPos.left);\r\n        var pos = findPosV(cm, headPos, dir, unit);\r\n        if (unit == \"page\" && range == doc.sel.primary())\r\n          addToScrollPos(cm, null, charCoords(cm, pos, \"div\").top - headPos.top);\r\n        return pos;\r\n      }, sel_move);\r\n      if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)\r\n        doc.sel.ranges[i].goalColumn = goals[i];\r\n    }),\r\n\r\n    // Find the word at the given position (as returned by coordsChar).\r\n    findWordAt: function(pos) {\r\n      var doc = this.doc, line = getLine(doc, pos.line).text;\r\n      var start = pos.ch, end = pos.ch;\r\n      if (line) {\r\n        var helper = this.getHelper(pos, \"wordChars\");\r\n        if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;\r\n        var startChar = line.charAt(start);\r\n        var check = isWordChar(startChar, helper)\r\n          ? function(ch) { return isWordChar(ch, helper); }\r\n          : /\\s/.test(startChar) ? function(ch) {return /\\s/.test(ch);}\r\n          : function(ch) {return !/\\s/.test(ch) && !isWordChar(ch);};\r\n        while (start > 0 && check(line.charAt(start - 1))) --start;\r\n        while (end < line.length && check(line.charAt(end))) ++end;\r\n      }\r\n      return new Range(Pos(pos.line, start), Pos(pos.line, end));\r\n    },\r\n\r\n    toggleOverwrite: function(value) {\r\n      if (value != null && value == this.state.overwrite) return;\r\n      if (this.state.overwrite = !this.state.overwrite)\r\n        addClass(this.display.cursorDiv, \"CodeMirror-overwrite\");\r\n      else\r\n        rmClass(this.display.cursorDiv, \"CodeMirror-overwrite\");\r\n\r\n      signal(this, \"overwriteToggle\", this, this.state.overwrite);\r\n    },\r\n    hasFocus: function() { return this.display.input.getField() == activeElt(); },\r\n\r\n    scrollTo: methodOp(function(x, y) {\r\n      if (x != null || y != null) resolveScrollToPos(this);\r\n      if (x != null) this.curOp.scrollLeft = x;\r\n      if (y != null) this.curOp.scrollTop = y;\r\n    }),\r\n    getScrollInfo: function() {\r\n      var scroller = this.display.scroller;\r\n      return {left: scroller.scrollLeft, top: scroller.scrollTop,\r\n              height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,\r\n              width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,\r\n              clientHeight: displayHeight(this), clientWidth: displayWidth(this)};\r\n    },\r\n\r\n    scrollIntoView: methodOp(function(range, margin) {\r\n      if (range == null) {\r\n        range = {from: this.doc.sel.primary().head, to: null};\r\n        if (margin == null) margin = this.options.cursorScrollMargin;\r\n      } else if (typeof range == \"number\") {\r\n        range = {from: Pos(range, 0), to: null};\r\n      } else if (range.from == null) {\r\n        range = {from: range, to: null};\r\n      }\r\n      if (!range.to) range.to = range.from;\r\n      range.margin = margin || 0;\r\n\r\n      if (range.from.line != null) {\r\n        resolveScrollToPos(this);\r\n        this.curOp.scrollToPos = range;\r\n      } else {\r\n        var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left),\r\n                                      Math.min(range.from.top, range.to.top) - range.margin,\r\n                                      Math.max(range.from.right, range.to.right),\r\n                                      Math.max(range.from.bottom, range.to.bottom) + range.margin);\r\n        this.scrollTo(sPos.scrollLeft, sPos.scrollTop);\r\n      }\r\n    }),\r\n\r\n    setSize: methodOp(function(width, height) {\r\n      var cm = this;\r\n      function interpret(val) {\r\n        return typeof val == \"number\" || /^\\d+$/.test(String(val)) ? val + \"px\" : val;\r\n      }\r\n      if (width != null) cm.display.wrapper.style.width = interpret(width);\r\n      if (height != null) cm.display.wrapper.style.height = interpret(height);\r\n      if (cm.options.lineWrapping) clearLineMeasurementCache(this);\r\n      var lineNo = cm.display.viewFrom;\r\n      cm.doc.iter(lineNo, cm.display.viewTo, function(line) {\r\n        if (line.widgets) for (var i = 0; i < line.widgets.length; i++)\r\n          if (line.widgets[i].noHScroll) { regLineChange(cm, lineNo, \"widget\"); break; }\r\n        ++lineNo;\r\n      });\r\n      cm.curOp.forceUpdate = true;\r\n      signal(cm, \"refresh\", this);\r\n    }),\r\n\r\n    operation: function(f){return runInOp(this, f);},\r\n\r\n    refresh: methodOp(function() {\r\n      var oldHeight = this.display.cachedTextHeight;\r\n      regChange(this);\r\n      this.curOp.forceUpdate = true;\r\n      clearCaches(this);\r\n      this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop);\r\n      updateGutterSpace(this);\r\n      if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)\r\n        estimateLineHeights(this);\r\n      signal(this, \"refresh\", this);\r\n    }),\r\n\r\n    swapDoc: methodOp(function(doc) {\r\n      var old = this.doc;\r\n      old.cm = null;\r\n      attachDoc(this, doc);\r\n      clearCaches(this);\r\n      this.display.input.reset();\r\n      this.scrollTo(doc.scrollLeft, doc.scrollTop);\r\n      this.curOp.forceScroll = true;\r\n      signalLater(this, \"swapDoc\", this, old);\r\n      return old;\r\n    }),\r\n\r\n    getInputField: function(){return this.display.input.getField();},\r\n    getWrapperElement: function(){return this.display.wrapper;},\r\n    getScrollerElement: function(){return this.display.scroller;},\r\n    getGutterElement: function(){return this.display.gutters;}\r\n  };\r\n  eventMixin(CodeMirror);\r\n\r\n  // OPTION DEFAULTS\r\n\r\n  // The default configuration options.\r\n  var defaults = CodeMirror.defaults = {};\r\n  // Functions to run when options are changed.\r\n  var optionHandlers = CodeMirror.optionHandlers = {};\r\n\r\n  function option(name, deflt, handle, notOnInit) {\r\n    CodeMirror.defaults[name] = deflt;\r\n    if (handle) optionHandlers[name] =\r\n      notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;\r\n  }\r\n\r\n  // Passed to option handlers when there is no old value.\r\n  var Init = CodeMirror.Init = {toString: function(){return \"CodeMirror.Init\";}};\r\n\r\n  // These two are, on init, called from the constructor because they\r\n  // have to be initialized before the editor can start at all.\r\n  option(\"value\", \"\", function(cm, val) {\r\n    cm.setValue(val);\r\n  }, true);\r\n  option(\"mode\", null, function(cm, val) {\r\n    cm.doc.modeOption = val;\r\n    loadMode(cm);\r\n  }, true);\r\n\r\n  option(\"indentUnit\", 2, loadMode, true);\r\n  option(\"indentWithTabs\", false);\r\n  option(\"smartIndent\", true);\r\n  option(\"tabSize\", 4, function(cm) {\r\n    resetModeState(cm);\r\n    clearCaches(cm);\r\n    regChange(cm);\r\n  }, true);\r\n  option(\"lineSeparator\", null, function(cm, val) {\r\n    cm.doc.lineSep = val;\r\n    if (!val) return;\r\n    var newBreaks = [], lineNo = cm.doc.first;\r\n    cm.doc.iter(function(line) {\r\n      for (var pos = 0;;) {\r\n        var found = line.text.indexOf(val, pos);\r\n        if (found == -1) break;\r\n        pos = found + val.length;\r\n        newBreaks.push(Pos(lineNo, found));\r\n      }\r\n      lineNo++;\r\n    });\r\n    for (var i = newBreaks.length - 1; i >= 0; i--)\r\n      replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length))\r\n  });\r\n  option(\"specialChars\", /[\\t\\u0000-\\u0019\\u00ad\\u200b-\\u200f\\u2028\\u2029\\ufeff]/g, function(cm, val, old) {\r\n    cm.state.specialChars = new RegExp(val.source + (val.test(\"\\t\") ? \"\" : \"|\\t\"), \"g\");\r\n    if (old != CodeMirror.Init) cm.refresh();\r\n  });\r\n  option(\"specialCharPlaceholder\", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true);\r\n  option(\"electricChars\", true);\r\n  option(\"inputStyle\", mobile ? \"contenteditable\" : \"textarea\", function() {\r\n    throw new Error(\"inputStyle can not (yet) be changed in a running editor\"); // FIXME\r\n  }, true);\r\n  option(\"rtlMoveVisually\", !windows);\r\n  option(\"wholeLineUpdateBefore\", true);\r\n\r\n  option(\"theme\", \"default\", function(cm) {\r\n    themeChanged(cm);\r\n    guttersChanged(cm);\r\n  }, true);\r\n  option(\"keyMap\", \"default\", function(cm, val, old) {\r\n    var next = getKeyMap(val);\r\n    var prev = old != CodeMirror.Init && getKeyMap(old);\r\n    if (prev && prev.detach) prev.detach(cm, next);\r\n    if (next.attach) next.attach(cm, prev || null);\r\n  });\r\n  option(\"extraKeys\", null);\r\n\r\n  option(\"lineWrapping\", false, wrappingChanged, true);\r\n  option(\"gutters\", [], function(cm) {\r\n    setGuttersForLineNumbers(cm.options);\r\n    guttersChanged(cm);\r\n  }, true);\r\n  option(\"fixedGutter\", true, function(cm, val) {\r\n    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + \"px\" : \"0\";\r\n    cm.refresh();\r\n  }, true);\r\n  option(\"coverGutterNextToScrollbar\", false, function(cm) {updateScrollbars(cm);}, true);\r\n  option(\"scrollbarStyle\", \"native\", function(cm) {\r\n    initScrollbars(cm);\r\n    updateScrollbars(cm);\r\n    cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);\r\n    cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);\r\n  }, true);\r\n  option(\"lineNumbers\", false, function(cm) {\r\n    setGuttersForLineNumbers(cm.options);\r\n    guttersChanged(cm);\r\n  }, true);\r\n  option(\"firstLineNumber\", 1, guttersChanged, true);\r\n  option(\"lineNumberFormatter\", function(integer) {return integer;}, guttersChanged, true);\r\n  option(\"showCursorWhenSelecting\", false, updateSelection, true);\r\n\r\n  option(\"resetSelectionOnContextMenu\", true);\r\n  option(\"lineWiseCopyCut\", true);\r\n\r\n  option(\"readOnly\", false, function(cm, val) {\r\n    if (val == \"nocursor\") {\r\n      onBlur(cm);\r\n      cm.display.input.blur();\r\n      cm.display.disabled = true;\r\n    } else {\r\n      cm.display.disabled = false;\r\n    }\r\n    cm.display.input.readOnlyChanged(val)\r\n  });\r\n  option(\"disableInput\", false, function(cm, val) {if (!val) cm.display.input.reset();}, true);\r\n  option(\"dragDrop\", true, dragDropChanged);\r\n  option(\"allowDropFileTypes\", null);\r\n\r\n  option(\"cursorBlinkRate\", 530);\r\n  option(\"cursorScrollMargin\", 0);\r\n  option(\"cursorHeight\", 1, updateSelection, true);\r\n  option(\"singleCursorHeightPerLine\", true, updateSelection, true);\r\n  option(\"workTime\", 100);\r\n  option(\"workDelay\", 100);\r\n  option(\"flattenSpans\", true, resetModeState, true);\r\n  option(\"addModeClass\", false, resetModeState, true);\r\n  option(\"pollInterval\", 100);\r\n  option(\"undoDepth\", 200, function(cm, val){cm.doc.history.undoDepth = val;});\r\n  option(\"historyEventDelay\", 1250);\r\n  option(\"viewportMargin\", 10, function(cm){cm.refresh();}, true);\r\n  option(\"maxHighlightLength\", 10000, resetModeState, true);\r\n  option(\"moveInputWithCursor\", true, function(cm, val) {\r\n    if (!val) cm.display.input.resetPosition();\r\n  });\r\n\r\n  option(\"tabindex\", null, function(cm, val) {\r\n    cm.display.input.getField().tabIndex = val || \"\";\r\n  });\r\n  option(\"autofocus\", null);\r\n\r\n  // MODE DEFINITION AND QUERYING\r\n\r\n  // Known modes, by name and by MIME\r\n  var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};\r\n\r\n  // Extra arguments are stored as the mode's dependencies, which is\r\n  // used by (legacy) mechanisms like loadmode.js to automatically\r\n  // load a mode. (Preferred mechanism is the require/define calls.)\r\n  CodeMirror.defineMode = function(name, mode) {\r\n    if (!CodeMirror.defaults.mode && name != \"null\") CodeMirror.defaults.mode = name;\r\n    if (arguments.length > 2)\r\n      mode.dependencies = Array.prototype.slice.call(arguments, 2);\r\n    modes[name] = mode;\r\n  };\r\n\r\n  CodeMirror.defineMIME = function(mime, spec) {\r\n    mimeModes[mime] = spec;\r\n  };\r\n\r\n  // Given a MIME type, a {name, ...options} config object, or a name\r\n  // string, return a mode config object.\r\n  CodeMirror.resolveMode = function(spec) {\r\n    if (typeof spec == \"string\" && mimeModes.hasOwnProperty(spec)) {\r\n      spec = mimeModes[spec];\r\n    } else if (spec && typeof spec.name == \"string\" && mimeModes.hasOwnProperty(spec.name)) {\r\n      var found = mimeModes[spec.name];\r\n      if (typeof found == \"string\") found = {name: found};\r\n      spec = createObj(found, spec);\r\n      spec.name = found.name;\r\n    } else if (typeof spec == \"string\" && /^[\\w\\-]+\\/[\\w\\-]+\\+xml$/.test(spec)) {\r\n      return CodeMirror.resolveMode(\"application/xml\");\r\n    }\r\n    if (typeof spec == \"string\") return {name: spec};\r\n    else return spec || {name: \"null\"};\r\n  };\r\n\r\n  // Given a mode spec (anything that resolveMode accepts), find and\r\n  // initialize an actual mode object.\r\n  CodeMirror.getMode = function(options, spec) {\r\n    var spec = CodeMirror.resolveMode(spec);\r\n    var mfactory = modes[spec.name];\r\n    if (!mfactory) return CodeMirror.getMode(options, \"text/plain\");\r\n    var modeObj = mfactory(options, spec);\r\n    if (modeExtensions.hasOwnProperty(spec.name)) {\r\n      var exts = modeExtensions[spec.name];\r\n      for (var prop in exts) {\r\n        if (!exts.hasOwnProperty(prop)) continue;\r\n        if (modeObj.hasOwnProperty(prop)) modeObj[\"_\" + prop] = modeObj[prop];\r\n        modeObj[prop] = exts[prop];\r\n      }\r\n    }\r\n    modeObj.name = spec.name;\r\n    if (spec.helperType) modeObj.helperType = spec.helperType;\r\n    if (spec.modeProps) for (var prop in spec.modeProps)\r\n      modeObj[prop] = spec.modeProps[prop];\r\n\r\n    return modeObj;\r\n  };\r\n\r\n  // Minimal default mode.\r\n  CodeMirror.defineMode(\"null\", function() {\r\n    return {token: function(stream) {stream.skipToEnd();}};\r\n  });\r\n  CodeMirror.defineMIME(\"text/plain\", \"null\");\r\n\r\n  // This can be used to attach properties to mode objects from\r\n  // outside the actual mode definition.\r\n  var modeExtensions = CodeMirror.modeExtensions = {};\r\n  CodeMirror.extendMode = function(mode, properties) {\r\n    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});\r\n    copyObj(properties, exts);\r\n  };\r\n\r\n  // EXTENSIONS\r\n\r\n  CodeMirror.defineExtension = function(name, func) {\r\n    CodeMirror.prototype[name] = func;\r\n  };\r\n  CodeMirror.defineDocExtension = function(name, func) {\r\n    Doc.prototype[name] = func;\r\n  };\r\n  CodeMirror.defineOption = option;\r\n\r\n  var initHooks = [];\r\n  CodeMirror.defineInitHook = function(f) {initHooks.push(f);};\r\n\r\n  var helpers = CodeMirror.helpers = {};\r\n  CodeMirror.registerHelper = function(type, name, value) {\r\n    if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []};\r\n    helpers[type][name] = value;\r\n  };\r\n  CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {\r\n    CodeMirror.registerHelper(type, name, value);\r\n    helpers[type]._global.push({pred: predicate, val: value});\r\n  };\r\n\r\n  // MODE STATE HANDLING\r\n\r\n  // Utility functions for working with state. Exported because nested\r\n  // modes need to do this for their inner modes.\r\n\r\n  var copyState = CodeMirror.copyState = function(mode, state) {\r\n    if (state === true) return state;\r\n    if (mode.copyState) return mode.copyState(state);\r\n    var nstate = {};\r\n    for (var n in state) {\r\n      var val = state[n];\r\n      if (val instanceof Array) val = val.concat([]);\r\n      nstate[n] = val;\r\n    }\r\n    return nstate;\r\n  };\r\n\r\n  var startState = CodeMirror.startState = function(mode, a1, a2) {\r\n    return mode.startState ? mode.startState(a1, a2) : true;\r\n  };\r\n\r\n  // Given a mode and a state (for that mode), find the inner mode and\r\n  // state at the position that the state refers to.\r\n  CodeMirror.innerMode = function(mode, state) {\r\n    while (mode.innerMode) {\r\n      var info = mode.innerMode(state);\r\n      if (!info || info.mode == mode) break;\r\n      state = info.state;\r\n      mode = info.mode;\r\n    }\r\n    return info || {mode: mode, state: state};\r\n  };\r\n\r\n  // STANDARD COMMANDS\r\n\r\n  // Commands are parameter-less actions that can be performed on an\r\n  // editor, mostly used for keybindings.\r\n  var commands = CodeMirror.commands = {\r\n    selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);},\r\n    singleSelection: function(cm) {\r\n      cm.setSelection(cm.getCursor(\"anchor\"), cm.getCursor(\"head\"), sel_dontScroll);\r\n    },\r\n    killLine: function(cm) {\r\n      deleteNearSelection(cm, function(range) {\r\n        if (range.empty()) {\r\n          var len = getLine(cm.doc, range.head.line).text.length;\r\n          if (range.head.ch == len && range.head.line < cm.lastLine())\r\n            return {from: range.head, to: Pos(range.head.line + 1, 0)};\r\n          else\r\n            return {from: range.head, to: Pos(range.head.line, len)};\r\n        } else {\r\n          return {from: range.from(), to: range.to()};\r\n        }\r\n      });\r\n    },\r\n    deleteLine: function(cm) {\r\n      deleteNearSelection(cm, function(range) {\r\n        return {from: Pos(range.from().line, 0),\r\n                to: clipPos(cm.doc, Pos(range.to().line + 1, 0))};\r\n      });\r\n    },\r\n    delLineLeft: function(cm) {\r\n      deleteNearSelection(cm, function(range) {\r\n        return {from: Pos(range.from().line, 0), to: range.from()};\r\n      });\r\n    },\r\n    delWrappedLineLeft: function(cm) {\r\n      deleteNearSelection(cm, function(range) {\r\n        var top = cm.charCoords(range.head, \"div\").top + 5;\r\n        var leftPos = cm.coordsChar({left: 0, top: top}, \"div\");\r\n        return {from: leftPos, to: range.from()};\r\n      });\r\n    },\r\n    delWrappedLineRight: function(cm) {\r\n      deleteNearSelection(cm, function(range) {\r\n        var top = cm.charCoords(range.head, \"div\").top + 5;\r\n        var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, \"div\");\r\n        return {from: range.from(), to: rightPos };\r\n      });\r\n    },\r\n    undo: function(cm) {cm.undo();},\r\n    redo: function(cm) {cm.redo();},\r\n    undoSelection: function(cm) {cm.undoSelection();},\r\n    redoSelection: function(cm) {cm.redoSelection();},\r\n    goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},\r\n    goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},\r\n    goLineStart: function(cm) {\r\n      cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); },\r\n                            {origin: \"+move\", bias: 1});\r\n    },\r\n    goLineStartSmart: function(cm) {\r\n      cm.extendSelectionsBy(function(range) {\r\n        return lineStartSmart(cm, range.head);\r\n      }, {origin: \"+move\", bias: 1});\r\n    },\r\n    goLineEnd: function(cm) {\r\n      cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); },\r\n                            {origin: \"+move\", bias: -1});\r\n    },\r\n    goLineRight: function(cm) {\r\n      cm.extendSelectionsBy(function(range) {\r\n        var top = cm.charCoords(range.head, \"div\").top + 5;\r\n        return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, \"div\");\r\n      }, sel_move);\r\n    },\r\n    goLineLeft: function(cm) {\r\n      cm.extendSelectionsBy(function(range) {\r\n        var top = cm.charCoords(range.head, \"div\").top + 5;\r\n        return cm.coordsChar({left: 0, top: top}, \"div\");\r\n      }, sel_move);\r\n    },\r\n    goLineLeftSmart: function(cm) {\r\n      cm.extendSelectionsBy(function(range) {\r\n        var top = cm.charCoords(range.head, \"div\").top + 5;\r\n        var pos = cm.coordsChar({left: 0, top: top}, \"div\");\r\n        if (pos.ch < cm.getLine(pos.line).search(/\\S/)) return lineStartSmart(cm, range.head);\r\n        return pos;\r\n      }, sel_move);\r\n    },\r\n    goLineUp: function(cm) {cm.moveV(-1, \"line\");},\r\n    goLineDown: function(cm) {cm.moveV(1, \"line\");},\r\n    goPageUp: function(cm) {cm.moveV(-1, \"page\");},\r\n    goPageDown: function(cm) {cm.moveV(1, \"page\");},\r\n    goCharLeft: function(cm) {cm.moveH(-1, \"char\");},\r\n    goCharRight: function(cm) {cm.moveH(1, \"char\");},\r\n    goColumnLeft: function(cm) {cm.moveH(-1, \"column\");},\r\n    goColumnRight: function(cm) {cm.moveH(1, \"column\");},\r\n    goWordLeft: function(cm) {cm.moveH(-1, \"word\");},\r\n    goGroupRight: function(cm) {cm.moveH(1, \"group\");},\r\n    goGroupLeft: function(cm) {cm.moveH(-1, \"group\");},\r\n    goWordRight: function(cm) {cm.moveH(1, \"word\");},\r\n    delCharBefore: function(cm) {cm.deleteH(-1, \"char\");},\r\n    delCharAfter: function(cm) {cm.deleteH(1, \"char\");},\r\n    delWordBefore: function(cm) {cm.deleteH(-1, \"word\");},\r\n    delWordAfter: function(cm) {cm.deleteH(1, \"word\");},\r\n    delGroupBefore: function(cm) {cm.deleteH(-1, \"group\");},\r\n    delGroupAfter: function(cm) {cm.deleteH(1, \"group\");},\r\n    indentAuto: function(cm) {cm.indentSelection(\"smart\");},\r\n    indentMore: function(cm) {cm.indentSelection(\"add\");},\r\n    indentLess: function(cm) {cm.indentSelection(\"subtract\");},\r\n    insertTab: function(cm) {cm.replaceSelection(\"\\t\");},\r\n    insertSoftTab: function(cm) {\r\n      var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;\r\n      for (var i = 0; i < ranges.length; i++) {\r\n        var pos = ranges[i].from();\r\n        var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);\r\n        spaces.push(new Array(tabSize - col % tabSize + 1).join(\" \"));\r\n      }\r\n      cm.replaceSelections(spaces);\r\n    },\r\n    defaultTab: function(cm) {\r\n      if (cm.somethingSelected()) cm.indentSelection(\"add\");\r\n      else cm.execCommand(\"insertTab\");\r\n    },\r\n    transposeChars: function(cm) {\r\n      runInOp(cm, function() {\r\n        var ranges = cm.listSelections(), newSel = [];\r\n        for (var i = 0; i < ranges.length; i++) {\r\n          var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;\r\n          if (line) {\r\n            if (cur.ch == line.length) cur = new Pos(cur.line, cur.ch - 1);\r\n            if (cur.ch > 0) {\r\n              cur = new Pos(cur.line, cur.ch + 1);\r\n              cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),\r\n                              Pos(cur.line, cur.ch - 2), cur, \"+transpose\");\r\n            } else if (cur.line > cm.doc.first) {\r\n              var prev = getLine(cm.doc, cur.line - 1).text;\r\n              if (prev)\r\n                cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +\r\n                                prev.charAt(prev.length - 1),\r\n                                Pos(cur.line - 1, prev.length - 1), Pos(cur.line, 1), \"+transpose\");\r\n            }\r\n          }\r\n          newSel.push(new Range(cur, cur));\r\n        }\r\n        cm.setSelections(newSel);\r\n      });\r\n    },\r\n    newlineAndIndent: function(cm) {\r\n      runInOp(cm, function() {\r\n        var len = cm.listSelections().length;\r\n        for (var i = 0; i < len; i++) {\r\n          var range = cm.listSelections()[i];\r\n          cm.replaceRange(cm.doc.lineSeparator(), range.anchor, range.head, \"+input\");\r\n          cm.indentLine(range.from().line + 1, null, true);\r\n        }\r\n        ensureCursorVisible(cm);\r\n      });\r\n    },\r\n    toggleOverwrite: function(cm) {cm.toggleOverwrite();}\r\n  };\r\n\r\n\r\n  // STANDARD KEYMAPS\r\n\r\n  var keyMap = CodeMirror.keyMap = {};\r\n\r\n  keyMap.basic = {\r\n    \"Left\": \"goCharLeft\", \"Right\": \"goCharRight\", \"Up\": \"goLineUp\", \"Down\": \"goLineDown\",\r\n    \"End\": \"goLineEnd\", \"Home\": \"goLineStartSmart\", \"PageUp\": \"goPageUp\", \"PageDown\": \"goPageDown\",\r\n    \"Delete\": \"delCharAfter\", \"Backspace\": \"delCharBefore\", \"Shift-Backspace\": \"delCharBefore\",\r\n    \"Tab\": \"defaultTab\", \"Shift-Tab\": \"indentAuto\",\r\n    \"Enter\": \"newlineAndIndent\", \"Insert\": \"toggleOverwrite\",\r\n    \"Esc\": \"singleSelection\"\r\n  };\r\n  // Note that the save and find-related commands aren't defined by\r\n  // default. User code or addons can define them. Unknown commands\r\n  // are simply ignored.\r\n  keyMap.pcDefault = {\r\n    \"Ctrl-A\": \"selectAll\", \"Ctrl-D\": \"deleteLine\", \"Ctrl-Z\": \"undo\", \"Shift-Ctrl-Z\": \"redo\", \"Ctrl-Y\": \"redo\",\r\n    \"Ctrl-Home\": \"goDocStart\", \"Ctrl-End\": \"goDocEnd\", \"Ctrl-Up\": \"goLineUp\", \"Ctrl-Down\": \"goLineDown\",\r\n    \"Ctrl-Left\": \"goGroupLeft\", \"Ctrl-Right\": \"goGroupRight\", \"Alt-Left\": \"goLineStart\", \"Alt-Right\": \"goLineEnd\",\r\n    \"Ctrl-Backspace\": \"delGroupBefore\", \"Ctrl-Delete\": \"delGroupAfter\", \"Ctrl-S\": \"save\", \"Ctrl-F\": \"find\",\r\n    \"Ctrl-G\": \"findNext\", \"Shift-Ctrl-G\": \"findPrev\", \"Shift-Ctrl-F\": \"replace\", \"Shift-Ctrl-R\": \"replaceAll\",\r\n    \"Ctrl-[\": \"indentLess\", \"Ctrl-]\": \"indentMore\",\r\n    \"Ctrl-U\": \"undoSelection\", \"Shift-Ctrl-U\": \"redoSelection\", \"Alt-U\": \"redoSelection\",\r\n    fallthrough: \"basic\"\r\n  };\r\n  // Very basic readline/emacs-style bindings, which are standard on Mac.\r\n  keyMap.emacsy = {\r\n    \"Ctrl-F\": \"goCharRight\", \"Ctrl-B\": \"goCharLeft\", \"Ctrl-P\": \"goLineUp\", \"Ctrl-N\": \"goLineDown\",\r\n    \"Alt-F\": \"goWordRight\", \"Alt-B\": \"goWordLeft\", \"Ctrl-A\": \"goLineStart\", \"Ctrl-E\": \"goLineEnd\",\r\n    \"Ctrl-V\": \"goPageDown\", \"Shift-Ctrl-V\": \"goPageUp\", \"Ctrl-D\": \"delCharAfter\", \"Ctrl-H\": \"delCharBefore\",\r\n    \"Alt-D\": \"delWordAfter\", \"Alt-Backspace\": \"delWordBefore\", \"Ctrl-K\": \"killLine\", \"Ctrl-T\": \"transposeChars\"\r\n  };\r\n  keyMap.macDefault = {\r\n    \"Cmd-A\": \"selectAll\", \"Cmd-D\": \"deleteLine\", \"Cmd-Z\": \"undo\", \"Shift-Cmd-Z\": \"redo\", \"Cmd-Y\": \"redo\",\r\n    \"Cmd-Home\": \"goDocStart\", \"Cmd-Up\": \"goDocStart\", \"Cmd-End\": \"goDocEnd\", \"Cmd-Down\": \"goDocEnd\", \"Alt-Left\": \"goGroupLeft\",\r\n    \"Alt-Right\": \"goGroupRight\", \"Cmd-Left\": \"goLineLeft\", \"Cmd-Right\": \"goLineRight\", \"Alt-Backspace\": \"delGroupBefore\",\r\n    \"Ctrl-Alt-Backspace\": \"delGroupAfter\", \"Alt-Delete\": \"delGroupAfter\", \"Cmd-S\": \"save\", \"Cmd-F\": \"find\",\r\n    \"Cmd-G\": \"findNext\", \"Shift-Cmd-G\": \"findPrev\", \"Cmd-Alt-F\": \"replace\", \"Shift-Cmd-Alt-F\": \"replaceAll\",\r\n    \"Cmd-[\": \"indentLess\", \"Cmd-]\": \"indentMore\", \"Cmd-Backspace\": \"delWrappedLineLeft\", \"Cmd-Delete\": \"delWrappedLineRight\",\r\n    \"Cmd-U\": \"undoSelection\", \"Shift-Cmd-U\": \"redoSelection\", \"Ctrl-Up\": \"goDocStart\", \"Ctrl-Down\": \"goDocEnd\",\r\n    fallthrough: [\"basic\", \"emacsy\"]\r\n  };\r\n  keyMap[\"default\"] = mac ? keyMap.macDefault : keyMap.pcDefault;\r\n\r\n  // KEYMAP DISPATCH\r\n\r\n  function normalizeKeyName(name) {\r\n    var parts = name.split(/-(?!$)/), name = parts[parts.length - 1];\r\n    var alt, ctrl, shift, cmd;\r\n    for (var i = 0; i < parts.length - 1; i++) {\r\n      var mod = parts[i];\r\n      if (/^(cmd|meta|m)$/i.test(mod)) cmd = true;\r\n      else if (/^a(lt)?$/i.test(mod)) alt = true;\r\n      else if (/^(c|ctrl|control)$/i.test(mod)) ctrl = true;\r\n      else if (/^s(hift)$/i.test(mod)) shift = true;\r\n      else throw new Error(\"Unrecognized modifier name: \" + mod);\r\n    }\r\n    if (alt) name = \"Alt-\" + name;\r\n    if (ctrl) name = \"Ctrl-\" + name;\r\n    if (cmd) name = \"Cmd-\" + name;\r\n    if (shift) name = \"Shift-\" + name;\r\n    return name;\r\n  }\r\n\r\n  // This is a kludge to keep keymaps mostly working as raw objects\r\n  // (backwards compatibility) while at the same time support features\r\n  // like normalization and multi-stroke key bindings. It compiles a\r\n  // new normalized keymap, and then updates the old object to reflect\r\n  // this.\r\n  CodeMirror.normalizeKeyMap = function(keymap) {\r\n    var copy = {};\r\n    for (var keyname in keymap) if (keymap.hasOwnProperty(keyname)) {\r\n      var value = keymap[keyname];\r\n      if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) continue;\r\n      if (value == \"...\") { delete keymap[keyname]; continue; }\r\n\r\n      var keys = map(keyname.split(\" \"), normalizeKeyName);\r\n      for (var i = 0; i < keys.length; i++) {\r\n        var val, name;\r\n        if (i == keys.length - 1) {\r\n          name = keys.join(\" \");\r\n          val = value;\r\n        } else {\r\n          name = keys.slice(0, i + 1).join(\" \");\r\n          val = \"...\";\r\n        }\r\n        var prev = copy[name];\r\n        if (!prev) copy[name] = val;\r\n        else if (prev != val) throw new Error(\"Inconsistent bindings for \" + name);\r\n      }\r\n      delete keymap[keyname];\r\n    }\r\n    for (var prop in copy) keymap[prop] = copy[prop];\r\n    return keymap;\r\n  };\r\n\r\n  var lookupKey = CodeMirror.lookupKey = function(key, map, handle, context) {\r\n    map = getKeyMap(map);\r\n    var found = map.call ? map.call(key, context) : map[key];\r\n    if (found === false) return \"nothing\";\r\n    if (found === \"...\") return \"multi\";\r\n    if (found != null && handle(found)) return \"handled\";\r\n\r\n    if (map.fallthrough) {\r\n      if (Object.prototype.toString.call(map.fallthrough) != \"[object Array]\")\r\n        return lookupKey(key, map.fallthrough, handle, context);\r\n      for (var i = 0; i < map.fallthrough.length; i++) {\r\n        var result = lookupKey(key, map.fallthrough[i], handle, context);\r\n        if (result) return result;\r\n      }\r\n    }\r\n  };\r\n\r\n  // Modifier key presses don't count as 'real' key presses for the\r\n  // purpose of keymap fallthrough.\r\n  var isModifierKey = CodeMirror.isModifierKey = function(value) {\r\n    var name = typeof value == \"string\" ? value : keyNames[value.keyCode];\r\n    return name == \"Ctrl\" || name == \"Alt\" || name == \"Shift\" || name == \"Mod\";\r\n  };\r\n\r\n  // Look up the name of a key as indicated by an event object.\r\n  var keyName = CodeMirror.keyName = function(event, noShift) {\r\n    if (presto && event.keyCode == 34 && event[\"char\"]) return false;\r\n    var base = keyNames[event.keyCode], name = base;\r\n    if (name == null || event.altGraphKey) return false;\r\n    if (event.altKey && base != \"Alt\") name = \"Alt-\" + name;\r\n    if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != \"Ctrl\") name = \"Ctrl-\" + name;\r\n    if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != \"Cmd\") name = \"Cmd-\" + name;\r\n    if (!noShift && event.shiftKey && base != \"Shift\") name = \"Shift-\" + name;\r\n    return name;\r\n  };\r\n\r\n  function getKeyMap(val) {\r\n    return typeof val == \"string\" ? keyMap[val] : val;\r\n  }\r\n\r\n  // FROMTEXTAREA\r\n\r\n  CodeMirror.fromTextArea = function(textarea, options) {\r\n    options = options ? copyObj(options) : {};\r\n    options.value = textarea.value;\r\n    if (!options.tabindex && textarea.tabIndex)\r\n      options.tabindex = textarea.tabIndex;\r\n    if (!options.placeholder && textarea.placeholder)\r\n      options.placeholder = textarea.placeholder;\r\n    // Set autofocus to true if this textarea is focused, or if it has\r\n    // autofocus and no other element is focused.\r\n    if (options.autofocus == null) {\r\n      var hasFocus = activeElt();\r\n      options.autofocus = hasFocus == textarea ||\r\n        textarea.getAttribute(\"autofocus\") != null && hasFocus == document.body;\r\n    }\r\n\r\n    function save() {textarea.value = cm.getValue();}\r\n    if (textarea.form) {\r\n      on(textarea.form, \"submit\", save);\r\n      // Deplorable hack to make the submit method do the right thing.\r\n      if (!options.leaveSubmitMethodAlone) {\r\n        var form = textarea.form, realSubmit = form.submit;\r\n        try {\r\n          var wrappedSubmit = form.submit = function() {\r\n            save();\r\n            form.submit = realSubmit;\r\n            form.submit();\r\n            form.submit = wrappedSubmit;\r\n          };\r\n        } catch(e) {}\r\n      }\r\n    }\r\n\r\n    options.finishInit = function(cm) {\r\n      cm.save = save;\r\n      cm.getTextArea = function() { return textarea; };\r\n      cm.toTextArea = function() {\r\n        cm.toTextArea = isNaN; // Prevent this from being ran twice\r\n        save();\r\n        textarea.parentNode.removeChild(cm.getWrapperElement());\r\n        textarea.style.display = \"\";\r\n        if (textarea.form) {\r\n          off(textarea.form, \"submit\", save);\r\n          if (typeof textarea.form.submit == \"function\")\r\n            textarea.form.submit = realSubmit;\r\n        }\r\n      };\r\n    };\r\n\r\n    textarea.style.display = \"none\";\r\n    var cm = CodeMirror(function(node) {\r\n      textarea.parentNode.insertBefore(node, textarea.nextSibling);\r\n    }, options);\r\n    return cm;\r\n  };\r\n\r\n  // STRING STREAM\r\n\r\n  // Fed to the mode parsers, provides helper functions to make\r\n  // parsers more succinct.\r\n\r\n  var StringStream = CodeMirror.StringStream = function(string, tabSize) {\r\n    this.pos = this.start = 0;\r\n    this.string = string;\r\n    this.tabSize = tabSize || 8;\r\n    this.lastColumnPos = this.lastColumnValue = 0;\r\n    this.lineStart = 0;\r\n  };\r\n\r\n  StringStream.prototype = {\r\n    eol: function() {return this.pos >= this.string.length;},\r\n    sol: function() {return this.pos == this.lineStart;},\r\n    peek: function() {return this.string.charAt(this.pos) || undefined;},\r\n    next: function() {\r\n      if (this.pos < this.string.length)\r\n        return this.string.charAt(this.pos++);\r\n    },\r\n    eat: function(match) {\r\n      var ch = this.string.charAt(this.pos);\r\n      if (typeof match == \"string\") var ok = ch == match;\r\n      else var ok = ch && (match.test ? match.test(ch) : match(ch));\r\n      if (ok) {++this.pos; return ch;}\r\n    },\r\n    eatWhile: function(match) {\r\n      var start = this.pos;\r\n      while (this.eat(match)){}\r\n      return this.pos > start;\r\n    },\r\n    eatSpace: function() {\r\n      var start = this.pos;\r\n      while (/[\\s\\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;\r\n      return this.pos > start;\r\n    },\r\n    skipToEnd: function() {this.pos = this.string.length;},\r\n    skipTo: function(ch) {\r\n      var found = this.string.indexOf(ch, this.pos);\r\n      if (found > -1) {this.pos = found; return true;}\r\n    },\r\n    backUp: function(n) {this.pos -= n;},\r\n    column: function() {\r\n      if (this.lastColumnPos < this.start) {\r\n        this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);\r\n        this.lastColumnPos = this.start;\r\n      }\r\n      return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);\r\n    },\r\n    indentation: function() {\r\n      return countColumn(this.string, null, this.tabSize) -\r\n        (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);\r\n    },\r\n    match: function(pattern, consume, caseInsensitive) {\r\n      if (typeof pattern == \"string\") {\r\n        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};\r\n        var substr = this.string.substr(this.pos, pattern.length);\r\n        if (cased(substr) == cased(pattern)) {\r\n          if (consume !== false) this.pos += pattern.length;\r\n          return true;\r\n        }\r\n      } else {\r\n        var match = this.string.slice(this.pos).match(pattern);\r\n        if (match && match.index > 0) return null;\r\n        if (match && consume !== false) this.pos += match[0].length;\r\n        return match;\r\n      }\r\n    },\r\n    current: function(){return this.string.slice(this.start, this.pos);},\r\n    hideFirstChars: function(n, inner) {\r\n      this.lineStart += n;\r\n      try { return inner(); }\r\n      finally { this.lineStart -= n; }\r\n    }\r\n  };\r\n\r\n  // TEXTMARKERS\r\n\r\n  // Created with markText and setBookmark methods. A TextMarker is a\r\n  // handle that can be used to clear or find a marked position in the\r\n  // document. Line objects hold arrays (markedSpans) containing\r\n  // {from, to, marker} object pointing to such marker objects, and\r\n  // indicating that such a marker is present on that line. Multiple\r\n  // lines may point to the same marker when it spans across lines.\r\n  // The spans will have null for their from/to properties when the\r\n  // marker continues beyond the start/end of the line. Markers have\r\n  // links back to the lines they currently touch.\r\n\r\n  var nextMarkerId = 0;\r\n\r\n  var TextMarker = CodeMirror.TextMarker = function(doc, type) {\r\n    this.lines = [];\r\n    this.type = type;\r\n    this.doc = doc;\r\n    this.id = ++nextMarkerId;\r\n  };\r\n  eventMixin(TextMarker);\r\n\r\n  // Clear the marker.\r\n  TextMarker.prototype.clear = function() {\r\n    if (this.explicitlyCleared) return;\r\n    var cm = this.doc.cm, withOp = cm && !cm.curOp;\r\n    if (withOp) startOperation(cm);\r\n    if (hasHandler(this, \"clear\")) {\r\n      var found = this.find();\r\n      if (found) signalLater(this, \"clear\", found.from, found.to);\r\n    }\r\n    var min = null, max = null;\r\n    for (var i = 0; i < this.lines.length; ++i) {\r\n      var line = this.lines[i];\r\n      var span = getMarkedSpanFor(line.markedSpans, this);\r\n      if (cm && !this.collapsed) regLineChange(cm, lineNo(line), \"text\");\r\n      else if (cm) {\r\n        if (span.to != null) max = lineNo(line);\r\n        if (span.from != null) min = lineNo(line);\r\n      }\r\n      line.markedSpans = removeMarkedSpan(line.markedSpans, span);\r\n      if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)\r\n        updateLineHeight(line, textHeight(cm.display));\r\n    }\r\n    if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {\r\n      var visual = visualLine(this.lines[i]), len = lineLength(visual);\r\n      if (len > cm.display.maxLineLength) {\r\n        cm.display.maxLine = visual;\r\n        cm.display.maxLineLength = len;\r\n        cm.display.maxLineChanged = true;\r\n      }\r\n    }\r\n\r\n    if (min != null && cm && this.collapsed) regChange(cm, min, max + 1);\r\n    this.lines.length = 0;\r\n    this.explicitlyCleared = true;\r\n    if (this.atomic && this.doc.cantEdit) {\r\n      this.doc.cantEdit = false;\r\n      if (cm) reCheckSelection(cm.doc);\r\n    }\r\n    if (cm) signalLater(cm, \"markerCleared\", cm, this);\r\n    if (withOp) endOperation(cm);\r\n    if (this.parent) this.parent.clear();\r\n  };\r\n\r\n  // Find the position of the marker in the document. Returns a {from,\r\n  // to} object by default. Side can be passed to get a specific side\r\n  // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the\r\n  // Pos objects returned contain a line object, rather than a line\r\n  // number (used to prevent looking up the same line twice).\r\n  TextMarker.prototype.find = function(side, lineObj) {\r\n    if (side == null && this.type == \"bookmark\") side = 1;\r\n    var from, to;\r\n    for (var i = 0; i < this.lines.length; ++i) {\r\n      var line = this.lines[i];\r\n      var span = getMarkedSpanFor(line.markedSpans, this);\r\n      if (span.from != null) {\r\n        from = Pos(lineObj ? line : lineNo(line), span.from);\r\n        if (side == -1) return from;\r\n      }\r\n      if (span.to != null) {\r\n        to = Pos(lineObj ? line : lineNo(line), span.to);\r\n        if (side == 1) return to;\r\n      }\r\n    }\r\n    return from && {from: from, to: to};\r\n  };\r\n\r\n  // Signals that the marker's widget changed, and surrounding layout\r\n  // should be recomputed.\r\n  TextMarker.prototype.changed = function() {\r\n    var pos = this.find(-1, true), widget = this, cm = this.doc.cm;\r\n    if (!pos || !cm) return;\r\n    runInOp(cm, function() {\r\n      var line = pos.line, lineN = lineNo(pos.line);\r\n      var view = findViewForLine(cm, lineN);\r\n      if (view) {\r\n        clearLineMeasurementCacheFor(view);\r\n        cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;\r\n      }\r\n      cm.curOp.updateMaxLine = true;\r\n      if (!lineIsHidden(widget.doc, line) && widget.height != null) {\r\n        var oldHeight = widget.height;\r\n        widget.height = null;\r\n        var dHeight = widgetHeight(widget) - oldHeight;\r\n        if (dHeight)\r\n          updateLineHeight(line, line.height + dHeight);\r\n      }\r\n    });\r\n  };\r\n\r\n  TextMarker.prototype.attachLine = function(line) {\r\n    if (!this.lines.length && this.doc.cm) {\r\n      var op = this.doc.cm.curOp;\r\n      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)\r\n        (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);\r\n    }\r\n    this.lines.push(line);\r\n  };\r\n  TextMarker.prototype.detachLine = function(line) {\r\n    this.lines.splice(indexOf(this.lines, line), 1);\r\n    if (!this.lines.length && this.doc.cm) {\r\n      var op = this.doc.cm.curOp;\r\n      (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);\r\n    }\r\n  };\r\n\r\n  // Collapsed markers have unique ids, in order to be able to order\r\n  // them, which is needed for uniquely determining an outer marker\r\n  // when they overlap (they may nest, but not partially overlap).\r\n  var nextMarkerId = 0;\r\n\r\n  // Create a marker, wire it up to the right lines, and\r\n  function markText(doc, from, to, options, type) {\r\n    // Shared markers (across linked documents) are handled separately\r\n    // (markTextShared will call out to this again, once per\r\n    // document).\r\n    if (options && options.shared) return markTextShared(doc, from, to, options, type);\r\n    // Ensure we are in an operation.\r\n    if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);\r\n\r\n    var marker = new TextMarker(doc, type), diff = cmp(from, to);\r\n    if (options) copyObj(options, marker, false);\r\n    // Don't connect empty markers unless clearWhenEmpty is false\r\n    if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)\r\n      return marker;\r\n    if (marker.replacedWith) {\r\n      // Showing up as a widget implies collapsed (widget replaces text)\r\n      marker.collapsed = true;\r\n      marker.widgetNode = elt(\"span\", [marker.replacedWith], \"CodeMirror-widget\");\r\n      if (!options.handleMouseEvents) marker.widgetNode.setAttribute(\"cm-ignore-events\", \"true\");\r\n      if (options.insertLeft) marker.widgetNode.insertLeft = true;\r\n    }\r\n    if (marker.collapsed) {\r\n      if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||\r\n          from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))\r\n        throw new Error(\"Inserting collapsed marker partially overlapping an existing one\");\r\n      sawCollapsedSpans = true;\r\n    }\r\n\r\n    if (marker.addToHistory)\r\n      addChangeToHistory(doc, {from: from, to: to, origin: \"markText\"}, doc.sel, NaN);\r\n\r\n    var curLine = from.line, cm = doc.cm, updateMaxLine;\r\n    doc.iter(curLine, to.line + 1, function(line) {\r\n      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)\r\n        updateMaxLine = true;\r\n      if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);\r\n      addMarkedSpan(line, new MarkedSpan(marker,\r\n                                         curLine == from.line ? from.ch : null,\r\n                                         curLine == to.line ? to.ch : null));\r\n      ++curLine;\r\n    });\r\n    // lineIsHidden depends on the presence of the spans, so needs a second pass\r\n    if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {\r\n      if (lineIsHidden(doc, line)) updateLineHeight(line, 0);\r\n    });\r\n\r\n    if (marker.clearOnEnter) on(marker, \"beforeCursorEnter\", function() { marker.clear(); });\r\n\r\n    if (marker.readOnly) {\r\n      sawReadOnlySpans = true;\r\n      if (doc.history.done.length || doc.history.undone.length)\r\n        doc.clearHistory();\r\n    }\r\n    if (marker.collapsed) {\r\n      marker.id = ++nextMarkerId;\r\n      marker.atomic = true;\r\n    }\r\n    if (cm) {\r\n      // Sync editor state\r\n      if (updateMaxLine) cm.curOp.updateMaxLine = true;\r\n      if (marker.collapsed)\r\n        regChange(cm, from.line, to.line + 1);\r\n      else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css)\r\n        for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, \"text\");\r\n      if (marker.atomic) reCheckSelection(cm.doc);\r\n      signalLater(cm, \"markerAdded\", cm, marker);\r\n    }\r\n    return marker;\r\n  }\r\n\r\n  // SHARED TEXTMARKERS\r\n\r\n  // A shared marker spans multiple linked documents. It is\r\n  // implemented as a meta-marker-object controlling multiple normal\r\n  // markers.\r\n  var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) {\r\n    this.markers = markers;\r\n    this.primary = primary;\r\n    for (var i = 0; i < markers.length; ++i)\r\n      markers[i].parent = this;\r\n  };\r\n  eventMixin(SharedTextMarker);\r\n\r\n  SharedTextMarker.prototype.clear = function() {\r\n    if (this.explicitlyCleared) return;\r\n    this.explicitlyCleared = true;\r\n    for (var i = 0; i < this.markers.length; ++i)\r\n      this.markers[i].clear();\r\n    signalLater(this, \"clear\");\r\n  };\r\n  SharedTextMarker.prototype.find = function(side, lineObj) {\r\n    return this.primary.find(side, lineObj);\r\n  };\r\n\r\n  function markTextShared(doc, from, to, options, type) {\r\n    options = copyObj(options);\r\n    options.shared = false;\r\n    var markers = [markText(doc, from, to, options, type)], primary = markers[0];\r\n    var widget = options.widgetNode;\r\n    linkedDocs(doc, function(doc) {\r\n      if (widget) options.widgetNode = widget.cloneNode(true);\r\n      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));\r\n      for (var i = 0; i < doc.linked.length; ++i)\r\n        if (doc.linked[i].isParent) return;\r\n      primary = lst(markers);\r\n    });\r\n    return new SharedTextMarker(markers, primary);\r\n  }\r\n\r\n  function findSharedMarkers(doc) {\r\n    return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())),\r\n                         function(m) { return m.parent; });\r\n  }\r\n\r\n  function copySharedMarkers(doc, markers) {\r\n    for (var i = 0; i < markers.length; i++) {\r\n      var marker = markers[i], pos = marker.find();\r\n      var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);\r\n      if (cmp(mFrom, mTo)) {\r\n        var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);\r\n        marker.markers.push(subMark);\r\n        subMark.parent = marker;\r\n      }\r\n    }\r\n  }\r\n\r\n  function detachSharedMarkers(markers) {\r\n    for (var i = 0; i < markers.length; i++) {\r\n      var marker = markers[i], linked = [marker.primary.doc];;\r\n      linkedDocs(marker.primary.doc, function(d) { linked.push(d); });\r\n      for (var j = 0; j < marker.markers.length; j++) {\r\n        var subMarker = marker.markers[j];\r\n        if (indexOf(linked, subMarker.doc) == -1) {\r\n          subMarker.parent = null;\r\n          marker.markers.splice(j--, 1);\r\n        }\r\n      }\r\n    }\r\n  }\r\n\r\n  // TEXTMARKER SPANS\r\n\r\n  function MarkedSpan(marker, from, to) {\r\n    this.marker = marker;\r\n    this.from = from; this.to = to;\r\n  }\r\n\r\n  // Search an array of spans for a span matching the given marker.\r\n  function getMarkedSpanFor(spans, marker) {\r\n    if (spans) for (var i = 0; i < spans.length; ++i) {\r\n      var span = spans[i];\r\n      if (span.marker == marker) return span;\r\n    }\r\n  }\r\n  // Remove a span from an array, returning undefined if no spans are\r\n  // left (we don't store arrays for lines without spans).\r\n  function removeMarkedSpan(spans, span) {\r\n    for (var r, i = 0; i < spans.length; ++i)\r\n      if (spans[i] != span) (r || (r = [])).push(spans[i]);\r\n    return r;\r\n  }\r\n  // Add a span to a line.\r\n  function addMarkedSpan(line, span) {\r\n    line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];\r\n    span.marker.attachLine(line);\r\n  }\r\n\r\n  // Used for the algorithm that adjusts markers for a change in the\r\n  // document. These functions cut an array of spans at a given\r\n  // character position, returning an array of remaining chunks (or\r\n  // undefined if nothing remains).\r\n  function markedSpansBefore(old, startCh, isInsert) {\r\n    if (old) for (var i = 0, nw; i < old.length; ++i) {\r\n      var span = old[i], marker = span.marker;\r\n      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);\r\n      if (startsBefore || span.from == startCh && marker.type == \"bookmark\" && (!isInsert || !span.marker.insertLeft)) {\r\n        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);\r\n        (nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));\r\n      }\r\n    }\r\n    return nw;\r\n  }\r\n  function markedSpansAfter(old, endCh, isInsert) {\r\n    if (old) for (var i = 0, nw; i < old.length; ++i) {\r\n      var span = old[i], marker = span.marker;\r\n      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);\r\n      if (endsAfter || span.from == endCh && marker.type == \"bookmark\" && (!isInsert || span.marker.insertLeft)) {\r\n        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);\r\n        (nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,\r\n                                              span.to == null ? null : span.to - endCh));\r\n      }\r\n    }\r\n    return nw;\r\n  }\r\n\r\n  // Given a change object, compute the new set of marker spans that\r\n  // cover the line in which the change took place. Removes spans\r\n  // entirely within the change, reconnects spans belonging to the\r\n  // same marker that appear on both sides of the change, and cuts off\r\n  // spans partially within the change. Returns an array of span\r\n  // arrays with one element for each line in (after) the change.\r\n  function stretchSpansOverChange(doc, change) {\r\n    if (change.full) return null;\r\n    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;\r\n    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;\r\n    if (!oldFirst && !oldLast) return null;\r\n\r\n    var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;\r\n    // Get the spans that 'stick out' on both sides\r\n    var first = markedSpansBefore(oldFirst, startCh, isInsert);\r\n    var last = markedSpansAfter(oldLast, endCh, isInsert);\r\n\r\n    // Next, merge those two ends\r\n    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);\r\n    if (first) {\r\n      // Fix up .to properties of first\r\n      for (var i = 0; i < first.length; ++i) {\r\n        var span = first[i];\r\n        if (span.to == null) {\r\n          var found = getMarkedSpanFor(last, span.marker);\r\n          if (!found) span.to = startCh;\r\n          else if (sameLine) span.to = found.to == null ? null : found.to + offset;\r\n        }\r\n      }\r\n    }\r\n    if (last) {\r\n      // Fix up .from in last (or move them into first in case of sameLine)\r\n      for (var i = 0; i < last.length; ++i) {\r\n        var span = last[i];\r\n        if (span.to != null) span.to += offset;\r\n        if (span.from == null) {\r\n          var found = getMarkedSpanFor(first, span.marker);\r\n          if (!found) {\r\n            span.from = offset;\r\n            if (sameLine) (first || (first = [])).push(span);\r\n          }\r\n        } else {\r\n          span.from += offset;\r\n          if (sameLine) (first || (first = [])).push(span);\r\n        }\r\n      }\r\n    }\r\n    // Make sure we didn't create any zero-length spans\r\n    if (first) first = clearEmptySpans(first);\r\n    if (last && last != first) last = clearEmptySpans(last);\r\n\r\n    var newMarkers = [first];\r\n    if (!sameLine) {\r\n      // Fill gap with whole-line-spans\r\n      var gap = change.text.length - 2, gapMarkers;\r\n      if (gap > 0 && first)\r\n        for (var i = 0; i < first.length; ++i)\r\n          if (first[i].to == null)\r\n            (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null));\r\n      for (var i = 0; i < gap; ++i)\r\n        newMarkers.push(gapMarkers);\r\n      newMarkers.push(last);\r\n    }\r\n    return newMarkers;\r\n  }\r\n\r\n  // Remove spans that are empty and don't have a clearWhenEmpty\r\n  // option of false.\r\n  function clearEmptySpans(spans) {\r\n    for (var i = 0; i < spans.length; ++i) {\r\n      var span = spans[i];\r\n      if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)\r\n        spans.splice(i--, 1);\r\n    }\r\n    if (!spans.length) return null;\r\n    return spans;\r\n  }\r\n\r\n  // Used for un/re-doing changes from the history. Combines the\r\n  // result of computing the existing spans with the set of spans that\r\n  // existed in the history (so that deleting around a span and then\r\n  // undoing brings back the span).\r\n  function mergeOldSpans(doc, change) {\r\n    var old = getOldSpans(doc, change);\r\n    var stretched = stretchSpansOverChange(doc, change);\r\n    if (!old) return stretched;\r\n    if (!stretched) return old;\r\n\r\n    for (var i = 0; i < old.length; ++i) {\r\n      var oldCur = old[i], stretchCur = stretched[i];\r\n      if (oldCur && stretchCur) {\r\n        spans: for (var j = 0; j < stretchCur.length; ++j) {\r\n          var span = stretchCur[j];\r\n          for (var k = 0; k < oldCur.length; ++k)\r\n            if (oldCur[k].marker == span.marker) continue spans;\r\n          oldCur.push(span);\r\n        }\r\n      } else if (stretchCur) {\r\n        old[i] = stretchCur;\r\n      }\r\n    }\r\n    return old;\r\n  }\r\n\r\n  // Used to 'clip' out readOnly ranges when making a change.\r\n  function removeReadOnlyRanges(doc, from, to) {\r\n    var markers = null;\r\n    doc.iter(from.line, to.line + 1, function(line) {\r\n      if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {\r\n        var mark = line.markedSpans[i].marker;\r\n        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))\r\n          (markers || (markers = [])).push(mark);\r\n      }\r\n    });\r\n    if (!markers) return null;\r\n    var parts = [{from: from, to: to}];\r\n    for (var i = 0; i < markers.length; ++i) {\r\n      var mk = markers[i], m = mk.find(0);\r\n      for (var j = 0; j < parts.length; ++j) {\r\n        var p = parts[j];\r\n        if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue;\r\n        var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);\r\n        if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)\r\n          newParts.push({from: p.from, to: m.from});\r\n        if (dto > 0 || !mk.inclusiveRight && !dto)\r\n          newParts.push({from: m.to, to: p.to});\r\n        parts.splice.apply(parts, newParts);\r\n        j += newParts.length - 1;\r\n      }\r\n    }\r\n    return parts;\r\n  }\r\n\r\n  // Connect or disconnect spans from a line.\r\n  function detachMarkedSpans(line) {\r\n    var spans = line.markedSpans;\r\n    if (!spans) return;\r\n    for (var i = 0; i < spans.length; ++i)\r\n      spans[i].marker.detachLine(line);\r\n    line.markedSpans = null;\r\n  }\r\n  function attachMarkedSpans(line, spans) {\r\n    if (!spans) return;\r\n    for (var i = 0; i < spans.length; ++i)\r\n      spans[i].marker.attachLine(line);\r\n    line.markedSpans = spans;\r\n  }\r\n\r\n  // Helpers used when computing which overlapping collapsed span\r\n  // counts as the larger one.\r\n  function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; }\r\n  function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; }\r\n\r\n  // Returns a number indicating which of two overlapping collapsed\r\n  // spans is larger (and thus includes the other). Falls back to\r\n  // comparing ids when the spans cover exactly the same range.\r\n  function compareCollapsedMarkers(a, b) {\r\n    var lenDiff = a.lines.length - b.lines.length;\r\n    if (lenDiff != 0) return lenDiff;\r\n    var aPos = a.find(), bPos = b.find();\r\n    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);\r\n    if (fromCmp) return -fromCmp;\r\n    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);\r\n    if (toCmp) return toCmp;\r\n    return b.id - a.id;\r\n  }\r\n\r\n  // Find out whether a line ends or starts in a collapsed span. If\r\n  // so, return the marker for that span.\r\n  function collapsedSpanAtSide(line, start) {\r\n    var sps = sawCollapsedSpans && line.markedSpans, found;\r\n    if (sps) for (var sp, i = 0; i < sps.length; ++i) {\r\n      sp = sps[i];\r\n      if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&\r\n          (!found || compareCollapsedMarkers(found, sp.marker) < 0))\r\n        found = sp.marker;\r\n    }\r\n    return found;\r\n  }\r\n  function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); }\r\n  function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); }\r\n\r\n  // Test whether there exists a collapsed span that partially\r\n  // overlaps (covers the start or end, but not both) of a new span.\r\n  // Such overlap is not allowed.\r\n  function conflictingCollapsedRange(doc, lineNo, from, to, marker) {\r\n    var line = getLine(doc, lineNo);\r\n    var sps = sawCollapsedSpans && line.markedSpans;\r\n    if (sps) for (var i = 0; i < sps.length; ++i) {\r\n      var sp = sps[i];\r\n      if (!sp.marker.collapsed) continue;\r\n      var found = sp.marker.find(0);\r\n      var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);\r\n      var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);\r\n      if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue;\r\n      if (fromCmp <= 0 && (cmp(found.to, from) > 0 || (sp.marker.inclusiveRight && marker.inclusiveLeft)) ||\r\n          fromCmp >= 0 && (cmp(found.from, to) < 0 || (sp.marker.inclusiveLeft && marker.inclusiveRight)))\r\n        return true;\r\n    }\r\n  }\r\n\r\n  // A visual line is a line as drawn on the screen. Folding, for\r\n  // example, can cause multiple logical lines to appear on the same\r\n  // visual line. This finds the start of the visual line that the\r\n  // given line is part of (usually that is the line itself).\r\n  function visualLine(line) {\r\n    var merged;\r\n    while (merged = collapsedSpanAtStart(line))\r\n      line = merged.find(-1, true).line;\r\n    return line;\r\n  }\r\n\r\n  // Returns an array of logical lines that continue the visual line\r\n  // started by the argument, or undefined if there are no such lines.\r\n  function visualLineContinued(line) {\r\n    var merged, lines;\r\n    while (merged = collapsedSpanAtEnd(line)) {\r\n      line = merged.find(1, true).line;\r\n      (lines || (lines = [])).push(line);\r\n    }\r\n    return lines;\r\n  }\r\n\r\n  // Get the line number of the start of the visual line that the\r\n  // given line number is part of.\r\n  function visualLineNo(doc, lineN) {\r\n    var line = getLine(doc, lineN), vis = visualLine(line);\r\n    if (line == vis) return lineN;\r\n    return lineNo(vis);\r\n  }\r\n  // Get the line number of the start of the next visual line after\r\n  // the given line.\r\n  function visualLineEndNo(doc, lineN) {\r\n    if (lineN > doc.lastLine()) return lineN;\r\n    var line = getLine(doc, lineN), merged;\r\n    if (!lineIsHidden(doc, line)) return lineN;\r\n    while (merged = collapsedSpanAtEnd(line))\r\n      line = merged.find(1, true).line;\r\n    return lineNo(line) + 1;\r\n  }\r\n\r\n  // Compute whether a line is hidden. Lines count as hidden when they\r\n  // are part of a visual line that starts with another line, or when\r\n  // they are entirely covered by collapsed, non-widget span.\r\n  function lineIsHidden(doc, line) {\r\n    var sps = sawCollapsedSpans && line.markedSpans;\r\n    if (sps) for (var sp, i = 0; i < sps.length; ++i) {\r\n      sp = sps[i];\r\n      if (!sp.marker.collapsed) continue;\r\n      if (sp.from == null) return true;\r\n      if (sp.marker.widgetNode) continue;\r\n      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))\r\n        return true;\r\n    }\r\n  }\r\n  function lineIsHiddenInner(doc, line, span) {\r\n    if (span.to == null) {\r\n      var end = span.marker.find(1, true);\r\n      return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker));\r\n    }\r\n    if (span.marker.inclusiveRight && span.to == line.text.length)\r\n      return true;\r\n    for (var sp, i = 0; i < line.markedSpans.length; ++i) {\r\n      sp = line.markedSpans[i];\r\n      if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&\r\n          (sp.to == null || sp.to != span.from) &&\r\n          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&\r\n          lineIsHiddenInner(doc, line, sp)) return true;\r\n    }\r\n  }\r\n\r\n  // LINE WIDGETS\r\n\r\n  // Line widgets are block elements displayed above or below a line.\r\n\r\n  var LineWidget = CodeMirror.LineWidget = function(doc, node, options) {\r\n    if (options) for (var opt in options) if (options.hasOwnProperty(opt))\r\n      this[opt] = options[opt];\r\n    this.doc = doc;\r\n    this.node = node;\r\n  };\r\n  eventMixin(LineWidget);\r\n\r\n  function adjustScrollWhenAboveVisible(cm, line, diff) {\r\n    if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))\r\n      addToScrollPos(cm, null, diff);\r\n  }\r\n\r\n  LineWidget.prototype.clear = function() {\r\n    var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);\r\n    if (no == null || !ws) return;\r\n    for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);\r\n    if (!ws.length) line.widgets = null;\r\n    var height = widgetHeight(this);\r\n    updateLineHeight(line, Math.max(0, line.height - height));\r\n    if (cm) runInOp(cm, function() {\r\n      adjustScrollWhenAboveVisible(cm, line, -height);\r\n      regLineChange(cm, no, \"widget\");\r\n    });\r\n  };\r\n  LineWidget.prototype.changed = function() {\r\n    var oldH = this.height, cm = this.doc.cm, line = this.line;\r\n    this.height = null;\r\n    var diff = widgetHeight(this) - oldH;\r\n    if (!diff) return;\r\n    updateLineHeight(line, line.height + diff);\r\n    if (cm) runInOp(cm, function() {\r\n      cm.curOp.forceUpdate = true;\r\n      adjustScrollWhenAboveVisible(cm, line, diff);\r\n    });\r\n  };\r\n\r\n  function widgetHeight(widget) {\r\n    if (widget.height != null) return widget.height;\r\n    var cm = widget.doc.cm;\r\n    if (!cm) return 0;\r\n    if (!contains(document.body, widget.node)) {\r\n      var parentStyle = \"position: relative;\";\r\n      if (widget.coverGutter)\r\n        parentStyle += \"margin-left: -\" + cm.display.gutters.offsetWidth + \"px;\";\r\n      if (widget.noHScroll)\r\n        parentStyle += \"width: \" + cm.display.wrapper.clientWidth + \"px;\";\r\n      removeChildrenAndAdd(cm.display.measure, elt(\"div\", [widget.node], null, parentStyle));\r\n    }\r\n    return widget.height = widget.node.parentNode.offsetHeight;\r\n  }\r\n\r\n  function addLineWidget(doc, handle, node, options) {\r\n    var widget = new LineWidget(doc, node, options);\r\n    var cm = doc.cm;\r\n    if (cm && widget.noHScroll) cm.display.alignWidgets = true;\r\n    changeLine(doc, handle, \"widget\", function(line) {\r\n      var widgets = line.widgets || (line.widgets = []);\r\n      if (widget.insertAt == null) widgets.push(widget);\r\n      else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);\r\n      widget.line = line;\r\n      if (cm && !lineIsHidden(doc, line)) {\r\n        var aboveVisible = heightAtLine(line) < doc.scrollTop;\r\n        updateLineHeight(line, line.height + widgetHeight(widget));\r\n        if (aboveVisible) addToScrollPos(cm, null, widget.height);\r\n        cm.curOp.forceUpdate = true;\r\n      }\r\n      return true;\r\n    });\r\n    return widget;\r\n  }\r\n\r\n  // LINE DATA STRUCTURE\r\n\r\n  // Line objects. These hold state related to a line, including\r\n  // highlighting info (the styles array).\r\n  var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {\r\n    this.text = text;\r\n    attachMarkedSpans(this, markedSpans);\r\n    this.height = estimateHeight ? estimateHeight(this) : 1;\r\n  };\r\n  eventMixin(Line);\r\n  Line.prototype.lineNo = function() { return lineNo(this); };\r\n\r\n  // Change the content (text, markers) of a line. Automatically\r\n  // invalidates cached information and tries to re-estimate the\r\n  // line's height.\r\n  function updateLine(line, text, markedSpans, estimateHeight) {\r\n    line.text = text;\r\n    if (line.stateAfter) line.stateAfter = null;\r\n    if (line.styles) line.styles = null;\r\n    if (line.order != null) line.order = null;\r\n    detachMarkedSpans(line);\r\n    attachMarkedSpans(line, markedSpans);\r\n    var estHeight = estimateHeight ? estimateHeight(line) : 1;\r\n    if (estHeight != line.height) updateLineHeight(line, estHeight);\r\n  }\r\n\r\n  // Detach a line from the document tree and its markers.\r\n  function cleanUpLine(line) {\r\n    line.parent = null;\r\n    detachMarkedSpans(line);\r\n  }\r\n\r\n  function extractLineClasses(type, output) {\r\n    if (type) for (;;) {\r\n      var lineClass = type.match(/(?:^|\\s+)line-(background-)?(\\S+)/);\r\n      if (!lineClass) break;\r\n      type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);\r\n      var prop = lineClass[1] ? \"bgClass\" : \"textClass\";\r\n      if (output[prop] == null)\r\n        output[prop] = lineClass[2];\r\n      else if (!(new RegExp(\"(?:^|\\s)\" + lineClass[2] + \"(?:$|\\s)\")).test(output[prop]))\r\n        output[prop] += \" \" + lineClass[2];\r\n    }\r\n    return type;\r\n  }\r\n\r\n  function callBlankLine(mode, state) {\r\n    if (mode.blankLine) return mode.blankLine(state);\r\n    if (!mode.innerMode) return;\r\n    var inner = CodeMirror.innerMode(mode, state);\r\n    if (inner.mode.blankLine) return inner.mode.blankLine(inner.state);\r\n  }\r\n\r\n  function readToken(mode, stream, state, inner) {\r\n    for (var i = 0; i < 10; i++) {\r\n      if (inner) inner[0] = CodeMirror.innerMode(mode, state).mode;\r\n      var style = mode.token(stream, state);\r\n      if (stream.pos > stream.start) return style;\r\n    }\r\n    throw new Error(\"Mode \" + mode.name + \" failed to advance stream.\");\r\n  }\r\n\r\n  // Utility for getTokenAt and getLineTokens\r\n  function takeToken(cm, pos, precise, asArray) {\r\n    function getObj(copy) {\r\n      return {start: stream.start, end: stream.pos,\r\n              string: stream.current(),\r\n              type: style || null,\r\n              state: copy ? copyState(doc.mode, state) : state};\r\n    }\r\n\r\n    var doc = cm.doc, mode = doc.mode, style;\r\n    pos = clipPos(doc, pos);\r\n    var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise);\r\n    var stream = new StringStream(line.text, cm.options.tabSize), tokens;\r\n    if (asArray) tokens = [];\r\n    while ((asArray || stream.pos < pos.ch) && !stream.eol()) {\r\n      stream.start = stream.pos;\r\n      style = readToken(mode, stream, state);\r\n      if (asArray) tokens.push(getObj(true));\r\n    }\r\n    return asArray ? tokens : getObj();\r\n  }\r\n\r\n  // Run the given mode's parser over a line, calling f for each token.\r\n  function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) {\r\n    var flattenSpans = mode.flattenSpans;\r\n    if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;\r\n    var curStart = 0, curStyle = null;\r\n    var stream = new StringStream(text, cm.options.tabSize), style;\r\n    var inner = cm.options.addModeClass && [null];\r\n    if (text == \"\") extractLineClasses(callBlankLine(mode, state), lineClasses);\r\n    while (!stream.eol()) {\r\n      if (stream.pos > cm.options.maxHighlightLength) {\r\n        flattenSpans = false;\r\n        if (forceToEnd) processLine(cm, text, state, stream.pos);\r\n        stream.pos = text.length;\r\n        style = null;\r\n      } else {\r\n        style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses);\r\n      }\r\n      if (inner) {\r\n        var mName = inner[0].name;\r\n        if (mName) style = \"m-\" + (style ? mName + \" \" + style : mName);\r\n      }\r\n      if (!flattenSpans || curStyle != style) {\r\n        while (curStart < stream.start) {\r\n          curStart = Math.min(stream.start, curStart + 50000);\r\n          f(curStart, curStyle);\r\n        }\r\n        curStyle = style;\r\n      }\r\n      stream.start = stream.pos;\r\n    }\r\n    while (curStart < stream.pos) {\r\n      // Webkit seems to refuse to render text nodes longer than 57444 characters\r\n      var pos = Math.min(stream.pos, curStart + 50000);\r\n      f(pos, curStyle);\r\n      curStart = pos;\r\n    }\r\n  }\r\n\r\n  // Compute a style array (an array starting with a mode generation\r\n  // -- for invalidation -- followed by pairs of end positions and\r\n  // style strings), which is used to highlight the tokens on the\r\n  // line.\r\n  function highlightLine(cm, line, state, forceToEnd) {\r\n    // A styles array always starts with a number identifying the\r\n    // mode/overlays that it is based on (for easy invalidation).\r\n    var st = [cm.state.modeGen], lineClasses = {};\r\n    // Compute the base array of styles\r\n    runMode(cm, line.text, cm.doc.mode, state, function(end, style) {\r\n      st.push(end, style);\r\n    }, lineClasses, forceToEnd);\r\n\r\n    // Run overlays, adjust style array.\r\n    for (var o = 0; o < cm.state.overlays.length; ++o) {\r\n      var overlay = cm.state.overlays[o], i = 1, at = 0;\r\n      runMode(cm, line.text, overlay.mode, true, function(end, style) {\r\n        var start = i;\r\n        // Ensure there's a token end at the current position, and that i points at it\r\n        while (at < end) {\r\n          var i_end = st[i];\r\n          if (i_end > end)\r\n            st.splice(i, 1, end, st[i+1], i_end);\r\n          i += 2;\r\n          at = Math.min(end, i_end);\r\n        }\r\n        if (!style) return;\r\n        if (overlay.opaque) {\r\n          st.splice(start, i - start, end, \"cm-overlay \" + style);\r\n          i = start + 2;\r\n        } else {\r\n          for (; start < i; start += 2) {\r\n            var cur = st[start+1];\r\n            st[start+1] = (cur ? cur + \" \" : \"\") + \"cm-overlay \" + style;\r\n          }\r\n        }\r\n      }, lineClasses);\r\n    }\r\n\r\n    return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null};\r\n  }\r\n\r\n  function getLineStyles(cm, line, updateFrontier) {\r\n    if (!line.styles || line.styles[0] != cm.state.modeGen) {\r\n      var state = getStateBefore(cm, lineNo(line));\r\n      var result = highlightLine(cm, line, line.text.length > cm.options.maxHighlightLength ? copyState(cm.doc.mode, state) : state);\r\n      line.stateAfter = state;\r\n      line.styles = result.styles;\r\n      if (result.classes) line.styleClasses = result.classes;\r\n      else if (line.styleClasses) line.styleClasses = null;\r\n      if (updateFrontier === cm.doc.frontier) cm.doc.frontier++;\r\n    }\r\n    return line.styles;\r\n  }\r\n\r\n  // Lightweight form of highlight -- proceed over this line and\r\n  // update state, but don't save a style array. Used for lines that\r\n  // aren't currently visible.\r\n  function processLine(cm, text, state, startAt) {\r\n    var mode = cm.doc.mode;\r\n    var stream = new StringStream(text, cm.options.tabSize);\r\n    stream.start = stream.pos = startAt || 0;\r\n    if (text == \"\") callBlankLine(mode, state);\r\n    while (!stream.eol()) {\r\n      readToken(mode, stream, state);\r\n      stream.start = stream.pos;\r\n    }\r\n  }\r\n\r\n  // Convert a style as returned by a mode (either null, or a string\r\n  // containing one or more styles) to a CSS style. This is cached,\r\n  // and also looks for line-wide styles.\r\n  var styleToClassCache = {}, styleToClassCacheWithMode = {};\r\n  function interpretTokenStyle(style, options) {\r\n    if (!style || /^\\s*$/.test(style)) return null;\r\n    var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;\r\n    return cache[style] ||\r\n      (cache[style] = style.replace(/\\S+/g, \"cm-$&\"));\r\n  }\r\n\r\n  // Render the DOM representation of the text of a line. Also builds\r\n  // up a 'line map', which points at the DOM nodes that represent\r\n  // specific stretches of text, and is used by the measuring code.\r\n  // The returned object contains the DOM node, this map, and\r\n  // information about line-wide styles that were set by the mode.\r\n  function buildLineContent(cm, lineView) {\r\n    // The padding-right forces the element to have a 'border', which\r\n    // is needed on Webkit to be able to get line-level bounding\r\n    // rectangles for it (in measureChar).\r\n    var content = elt(\"span\", null, null, webkit ? \"padding-right: .1px\" : null);\r\n    var builder = {pre: elt(\"pre\", [content], \"CodeMirror-line\"), content: content,\r\n                   col: 0, pos: 0, cm: cm,\r\n                   splitSpaces: (ie || webkit) && cm.getOption(\"lineWrapping\")};\r\n    lineView.measure = {};\r\n\r\n    // Iterate over the logical lines that make up this visual line.\r\n    for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {\r\n      var line = i ? lineView.rest[i - 1] : lineView.line, order;\r\n      builder.pos = 0;\r\n      builder.addToken = buildToken;\r\n      // Optionally wire in some hacks into the token-rendering\r\n      // algorithm, to deal with browser quirks.\r\n      if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))\r\n        builder.addToken = buildTokenBadBidi(builder.addToken, order);\r\n      builder.map = [];\r\n      var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);\r\n      insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));\r\n      if (line.styleClasses) {\r\n        if (line.styleClasses.bgClass)\r\n          builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || \"\");\r\n        if (line.styleClasses.textClass)\r\n          builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || \"\");\r\n      }\r\n\r\n      // Ensure at least a single node is present, for measuring.\r\n      if (builder.map.length == 0)\r\n        builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure)));\r\n\r\n      // Store the map and a cache object for the current logical line\r\n      if (i == 0) {\r\n        lineView.measure.map = builder.map;\r\n        lineView.measure.cache = {};\r\n      } else {\r\n        (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map);\r\n        (lineView.measure.caches || (lineView.measure.caches = [])).push({});\r\n      }\r\n    }\r\n\r\n    // See issue #2901\r\n    if (webkit && /\\bcm-tab\\b/.test(builder.content.lastChild.className))\r\n      builder.content.className = \"cm-tab-wrap-hack\";\r\n\r\n    signal(cm, \"renderLine\", cm, lineView.line, builder.pre);\r\n    if (builder.pre.className)\r\n      builder.textClass = joinClasses(builder.pre.className, builder.textClass || \"\");\r\n\r\n    return builder;\r\n  }\r\n\r\n  function defaultSpecialCharPlaceholder(ch) {\r\n    var token = elt(\"span\", \"\\u2022\", \"cm-invalidchar\");\r\n    token.title = \"\\\\u\" + ch.charCodeAt(0).toString(16);\r\n    token.setAttribute(\"aria-label\", token.title);\r\n    return token;\r\n  }\r\n\r\n  // Build up the DOM representation for a single token, and add it to\r\n  // the line map. Takes care to render special characters separately.\r\n  function buildToken(builder, text, style, startStyle, endStyle, title, css) {\r\n    if (!text) return;\r\n    var displayText = builder.splitSpaces ? text.replace(/ {3,}/g, splitSpaces) : text;\r\n    var special = builder.cm.state.specialChars, mustWrap = false;\r\n    if (!special.test(text)) {\r\n      builder.col += text.length;\r\n      var content = document.createTextNode(displayText);\r\n      builder.map.push(builder.pos, builder.pos + text.length, content);\r\n      if (ie && ie_version < 9) mustWrap = true;\r\n      builder.pos += text.length;\r\n    } else {\r\n      var content = document.createDocumentFragment(), pos = 0;\r\n      while (true) {\r\n        special.lastIndex = pos;\r\n        var m = special.exec(text);\r\n        var skipped = m ? m.index - pos : text.length - pos;\r\n        if (skipped) {\r\n          var txt = document.createTextNode(displayText.slice(pos, pos + skipped));\r\n          if (ie && ie_version < 9) content.appendChild(elt(\"span\", [txt]));\r\n          else content.appendChild(txt);\r\n          builder.map.push(builder.pos, builder.pos + skipped, txt);\r\n          builder.col += skipped;\r\n          builder.pos += skipped;\r\n        }\r\n        if (!m) break;\r\n        pos += skipped + 1;\r\n        if (m[0] == \"\\t\") {\r\n          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;\r\n          var txt = content.appendChild(elt(\"span\", spaceStr(tabWidth), \"cm-tab\"));\r\n          txt.setAttribute(\"role\", \"presentation\");\r\n          txt.setAttribute(\"cm-text\", \"\\t\");\r\n          builder.col += tabWidth;\r\n        } else if (m[0] == \"\\r\" || m[0] == \"\\n\") {\r\n          var txt = content.appendChild(elt(\"span\", m[0] == \"\\r\" ? \"\\u240d\" : \"\\u2424\", \"cm-invalidchar\"));\r\n          txt.setAttribute(\"cm-text\", m[0]);\r\n          builder.col += 1;\r\n        } else {\r\n          var txt = builder.cm.options.specialCharPlaceholder(m[0]);\r\n          txt.setAttribute(\"cm-text\", m[0]);\r\n          if (ie && ie_version < 9) content.appendChild(elt(\"span\", [txt]));\r\n          else content.appendChild(txt);\r\n          builder.col += 1;\r\n        }\r\n        builder.map.push(builder.pos, builder.pos + 1, txt);\r\n        builder.pos++;\r\n      }\r\n    }\r\n    if (style || startStyle || endStyle || mustWrap || css) {\r\n      var fullStyle = style || \"\";\r\n      if (startStyle) fullStyle += startStyle;\r\n      if (endStyle) fullStyle += endStyle;\r\n      var token = elt(\"span\", [content], fullStyle, css);\r\n      if (title) token.title = title;\r\n      return builder.content.appendChild(token);\r\n    }\r\n    builder.content.appendChild(content);\r\n  }\r\n\r\n  function splitSpaces(old) {\r\n    var out = \" \";\r\n    for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? \" \" : \"\\u00a0\";\r\n    out += \" \";\r\n    return out;\r\n  }\r\n\r\n  // Work around nonsense dimensions being reported for stretches of\r\n  // right-to-left text.\r\n  function buildTokenBadBidi(inner, order) {\r\n    return function(builder, text, style, startStyle, endStyle, title, css) {\r\n      style = style ? style + \" cm-force-border\" : \"cm-force-border\";\r\n      var start = builder.pos, end = start + text.length;\r\n      for (;;) {\r\n        // Find the part that overlaps with the start of this text\r\n        for (var i = 0; i < order.length; i++) {\r\n          var part = order[i];\r\n          if (part.to > start && part.from <= start) break;\r\n        }\r\n        if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title, css);\r\n        inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css);\r\n        startStyle = null;\r\n        text = text.slice(part.to - start);\r\n        start = part.to;\r\n      }\r\n    };\r\n  }\r\n\r\n  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {\r\n    var widget = !ignoreWidget && marker.widgetNode;\r\n    if (widget) builder.map.push(builder.pos, builder.pos + size, widget);\r\n    if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {\r\n      if (!widget)\r\n        widget = builder.content.appendChild(document.createElement(\"span\"));\r\n      widget.setAttribute(\"cm-marker\", marker.id);\r\n    }\r\n    if (widget) {\r\n      builder.cm.display.input.setUneditable(widget);\r\n      builder.content.appendChild(widget);\r\n    }\r\n    builder.pos += size;\r\n  }\r\n\r\n  // Outputs a number of spans to make up a line, taking highlighting\r\n  // and marked text into account.\r\n  function insertLineContent(line, builder, styles) {\r\n    var spans = line.markedSpans, allText = line.text, at = 0;\r\n    if (!spans) {\r\n      for (var i = 1; i < styles.length; i+=2)\r\n        builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options));\r\n      return;\r\n    }\r\n\r\n    var len = allText.length, pos = 0, i = 1, text = \"\", style, css;\r\n    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;\r\n    for (;;) {\r\n      if (nextChange == pos) { // Update current marker set\r\n        spanStyle = spanEndStyle = spanStartStyle = title = css = \"\";\r\n        collapsed = null; nextChange = Infinity;\r\n        var foundBookmarks = [];\r\n        for (var j = 0; j < spans.length; ++j) {\r\n          var sp = spans[j], m = sp.marker;\r\n          if (m.type == \"bookmark\" && sp.from == pos && m.widgetNode) {\r\n            foundBookmarks.push(m);\r\n          } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {\r\n            if (sp.to != null && sp.to != pos && nextChange > sp.to) {\r\n              nextChange = sp.to;\r\n              spanEndStyle = \"\";\r\n            }\r\n            if (m.className) spanStyle += \" \" + m.className;\r\n            if (m.css) css = (css ? css + \";\" : \"\") + m.css;\r\n            if (m.startStyle && sp.from == pos) spanStartStyle += \" \" + m.startStyle;\r\n            if (m.endStyle && sp.to == nextChange) spanEndStyle += \" \" + m.endStyle;\r\n            if (m.title && !title) title = m.title;\r\n            if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))\r\n              collapsed = sp;\r\n          } else if (sp.from > pos && nextChange > sp.from) {\r\n            nextChange = sp.from;\r\n          }\r\n        }\r\n        if (collapsed && (collapsed.from || 0) == pos) {\r\n          buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,\r\n                             collapsed.marker, collapsed.from == null);\r\n          if (collapsed.to == null) return;\r\n          if (collapsed.to == pos) collapsed = false;\r\n        }\r\n        if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)\r\n          buildCollapsedSpan(builder, 0, foundBookmarks[j]);\r\n      }\r\n      if (pos >= len) break;\r\n\r\n      var upto = Math.min(len, nextChange);\r\n      while (true) {\r\n        if (text) {\r\n          var end = pos + text.length;\r\n          if (!collapsed) {\r\n            var tokenText = end > upto ? text.slice(0, upto - pos) : text;\r\n            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,\r\n                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : \"\", title, css);\r\n          }\r\n          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}\r\n          pos = end;\r\n          spanStartStyle = \"\";\r\n        }\r\n        text = allText.slice(at, at = styles[i++]);\r\n        style = interpretTokenStyle(styles[i++], builder.cm.options);\r\n      }\r\n    }\r\n  }\r\n\r\n  // DOCUMENT DATA STRUCTURE\r\n\r\n  // By default, updates that start and end at the beginning of a line\r\n  // are treated specially, in order to make the association of line\r\n  // widgets and marker elements with the text behave more intuitive.\r\n  function isWholeLineUpdate(doc, change) {\r\n    return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == \"\" &&\r\n      (!doc.cm || doc.cm.options.wholeLineUpdateBefore);\r\n  }\r\n\r\n  // Perform a change on the document data structure.\r\n  function updateDoc(doc, change, markedSpans, estimateHeight) {\r\n    function spansFor(n) {return markedSpans ? markedSpans[n] : null;}\r\n    function update(line, text, spans) {\r\n      updateLine(line, text, spans, estimateHeight);\r\n      signalLater(line, \"change\", line, change);\r\n    }\r\n    function linesFor(start, end) {\r\n      for (var i = start, result = []; i < end; ++i)\r\n        result.push(new Line(text[i], spansFor(i), estimateHeight));\r\n      return result;\r\n    }\r\n\r\n    var from = change.from, to = change.to, text = change.text;\r\n    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);\r\n    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;\r\n\r\n    // Adjust the line structure\r\n    if (change.full) {\r\n      doc.insert(0, linesFor(0, text.length));\r\n      doc.remove(text.length, doc.size - text.length);\r\n    } else if (isWholeLineUpdate(doc, change)) {\r\n      // This is a whole-line replace. Treated specially to make\r\n      // sure line objects move the way they are supposed to.\r\n      var added = linesFor(0, text.length - 1);\r\n      update(lastLine, lastLine.text, lastSpans);\r\n      if (nlines) doc.remove(from.line, nlines);\r\n      if (added.length) doc.insert(from.line, added);\r\n    } else if (firstLine == lastLine) {\r\n      if (text.length == 1) {\r\n        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);\r\n      } else {\r\n        var added = linesFor(1, text.length - 1);\r\n        added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));\r\n        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));\r\n        doc.insert(from.line + 1, added);\r\n      }\r\n    } else if (text.length == 1) {\r\n      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));\r\n      doc.remove(from.line + 1, nlines);\r\n    } else {\r\n      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));\r\n      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);\r\n      var added = linesFor(1, text.length - 1);\r\n      if (nlines > 1) doc.remove(from.line + 1, nlines - 1);\r\n      doc.insert(from.line + 1, added);\r\n    }\r\n\r\n    signalLater(doc, \"change\", doc, change);\r\n  }\r\n\r\n  // The document is represented as a BTree consisting of leaves, with\r\n  // chunk of lines in them, and branches, with up to ten leaves or\r\n  // other branch nodes below them. The top node is always a branch\r\n  // node, and is the document object itself (meaning it has\r\n  // additional methods and properties).\r\n  //\r\n  // All nodes have parent links. The tree is used both to go from\r\n  // line numbers to line objects, and to go from objects to numbers.\r\n  // It also indexes by height, and is used to convert between height\r\n  // and line object, and to find the total height of the document.\r\n  //\r\n  // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html\r\n\r\n  function LeafChunk(lines) {\r\n    this.lines = lines;\r\n    this.parent = null;\r\n    for (var i = 0, height = 0; i < lines.length; ++i) {\r\n      lines[i].parent = this;\r\n      height += lines[i].height;\r\n    }\r\n    this.height = height;\r\n  }\r\n\r\n  LeafChunk.prototype = {\r\n    chunkSize: function() { return this.lines.length; },\r\n    // Remove the n lines at offset 'at'.\r\n    removeInner: function(at, n) {\r\n      for (var i = at, e = at + n; i < e; ++i) {\r\n        var line = this.lines[i];\r\n        this.height -= line.height;\r\n        cleanUpLine(line);\r\n        signalLater(line, \"delete\");\r\n      }\r\n      this.lines.splice(at, n);\r\n    },\r\n    // Helper used to collapse a small branch into a single leaf.\r\n    collapse: function(lines) {\r\n      lines.push.apply(lines, this.lines);\r\n    },\r\n    // Insert the given array of lines at offset 'at', count them as\r\n    // having the given height.\r\n    insertInner: function(at, lines, height) {\r\n      this.height += height;\r\n      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));\r\n      for (var i = 0; i < lines.length; ++i) lines[i].parent = this;\r\n    },\r\n    // Used to iterate over a part of the tree.\r\n    iterN: function(at, n, op) {\r\n      for (var e = at + n; at < e; ++at)\r\n        if (op(this.lines[at])) return true;\r\n    }\r\n  };\r\n\r\n  function BranchChunk(children) {\r\n    this.children = children;\r\n    var size = 0, height = 0;\r\n    for (var i = 0; i < children.length; ++i) {\r\n      var ch = children[i];\r\n      size += ch.chunkSize(); height += ch.height;\r\n      ch.parent = this;\r\n    }\r\n    this.size = size;\r\n    this.height = height;\r\n    this.parent = null;\r\n  }\r\n\r\n  BranchChunk.prototype = {\r\n    chunkSize: function() { return this.size; },\r\n    removeInner: function(at, n) {\r\n      this.size -= n;\r\n      for (var i = 0; i < this.children.length; ++i) {\r\n        var child = this.children[i], sz = child.chunkSize();\r\n        if (at < sz) {\r\n          var rm = Math.min(n, sz - at), oldHeight = child.height;\r\n          child.removeInner(at, rm);\r\n          this.height -= oldHeight - child.height;\r\n          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }\r\n          if ((n -= rm) == 0) break;\r\n          at = 0;\r\n        } else at -= sz;\r\n      }\r\n      // If the result is smaller than 25 lines, ensure that it is a\r\n      // single leaf node.\r\n      if (this.size - n < 25 &&\r\n          (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {\r\n        var lines = [];\r\n        this.collapse(lines);\r\n        this.children = [new LeafChunk(lines)];\r\n        this.children[0].parent = this;\r\n      }\r\n    },\r\n    collapse: function(lines) {\r\n      for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines);\r\n    },\r\n    insertInner: function(at, lines, height) {\r\n      this.size += lines.length;\r\n      this.height += height;\r\n      for (var i = 0; i < this.children.length; ++i) {\r\n        var child = this.children[i], sz = child.chunkSize();\r\n        if (at <= sz) {\r\n          child.insertInner(at, lines, height);\r\n          if (child.lines && child.lines.length > 50) {\r\n            while (child.lines.length > 50) {\r\n              var spilled = child.lines.splice(child.lines.length - 25, 25);\r\n              var newleaf = new LeafChunk(spilled);\r\n              child.height -= newleaf.height;\r\n              this.children.splice(i + 1, 0, newleaf);\r\n              newleaf.parent = this;\r\n            }\r\n            this.maybeSpill();\r\n          }\r\n          break;\r\n        }\r\n        at -= sz;\r\n      }\r\n    },\r\n    // When a node has grown, check whether it should be split.\r\n    maybeSpill: function() {\r\n      if (this.children.length <= 10) return;\r\n      var me = this;\r\n      do {\r\n        var spilled = me.children.splice(me.children.length - 5, 5);\r\n        var sibling = new BranchChunk(spilled);\r\n        if (!me.parent) { // Become the parent node\r\n          var copy = new BranchChunk(me.children);\r\n          copy.parent = me;\r\n          me.children = [copy, sibling];\r\n          me = copy;\r\n        } else {\r\n          me.size -= sibling.size;\r\n          me.height -= sibling.height;\r\n          var myIndex = indexOf(me.parent.children, me);\r\n          me.parent.children.splice(myIndex + 1, 0, sibling);\r\n        }\r\n        sibling.parent = me.parent;\r\n      } while (me.children.length > 10);\r\n      me.parent.maybeSpill();\r\n    },\r\n    iterN: function(at, n, op) {\r\n      for (var i = 0; i < this.children.length; ++i) {\r\n        var child = this.children[i], sz = child.chunkSize();\r\n        if (at < sz) {\r\n          var used = Math.min(n, sz - at);\r\n          if (child.iterN(at, used, op)) return true;\r\n          if ((n -= used) == 0) break;\r\n          at = 0;\r\n        } else at -= sz;\r\n      }\r\n    }\r\n  };\r\n\r\n  var nextDocId = 0;\r\n  var Doc = CodeMirror.Doc = function(text, mode, firstLine, lineSep) {\r\n    if (!(this instanceof Doc)) return new Doc(text, mode, firstLine, lineSep);\r\n    if (firstLine == null) firstLine = 0;\r\n\r\n    BranchChunk.call(this, [new LeafChunk([new Line(\"\", null)])]);\r\n    this.first = firstLine;\r\n    this.scrollTop = this.scrollLeft = 0;\r\n    this.cantEdit = false;\r\n    this.cleanGeneration = 1;\r\n    this.frontier = firstLine;\r\n    var start = Pos(firstLine, 0);\r\n    this.sel = simpleSelection(start);\r\n    this.history = new History(null);\r\n    this.id = ++nextDocId;\r\n    this.modeOption = mode;\r\n    this.lineSep = lineSep;\r\n    this.extend = false;\r\n\r\n    if (typeof text == \"string\") text = this.splitLines(text);\r\n    updateDoc(this, {from: start, to: start, text: text});\r\n    setSelection(this, simpleSelection(start), sel_dontScroll);\r\n  };\r\n\r\n  Doc.prototype = createObj(BranchChunk.prototype, {\r\n    constructor: Doc,\r\n    // Iterate over the document. Supports two forms -- with only one\r\n    // argument, it calls that for each line in the document. With\r\n    // three, it iterates over the range given by the first two (with\r\n    // the second being non-inclusive).\r\n    iter: function(from, to, op) {\r\n      if (op) this.iterN(from - this.first, to - from, op);\r\n      else this.iterN(this.first, this.first + this.size, from);\r\n    },\r\n\r\n    // Non-public interface for adding and removing lines.\r\n    insert: function(at, lines) {\r\n      var height = 0;\r\n      for (var i = 0; i < lines.length; ++i) height += lines[i].height;\r\n      this.insertInner(at - this.first, lines, height);\r\n    },\r\n    remove: function(at, n) { this.removeInner(at - this.first, n); },\r\n\r\n    // From here, the methods are part of the public interface. Most\r\n    // are also available from CodeMirror (editor) instances.\r\n\r\n    getValue: function(lineSep) {\r\n      var lines = getLines(this, this.first, this.first + this.size);\r\n      if (lineSep === false) return lines;\r\n      return lines.join(lineSep || this.lineSeparator());\r\n    },\r\n    setValue: docMethodOp(function(code) {\r\n      var top = Pos(this.first, 0), last = this.first + this.size - 1;\r\n      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),\r\n                        text: this.splitLines(code), origin: \"setValue\", full: true}, true);\r\n      setSelection(this, simpleSelection(top));\r\n    }),\r\n    replaceRange: function(code, from, to, origin) {\r\n      from = clipPos(this, from);\r\n      to = to ? clipPos(this, to) : from;\r\n      replaceRange(this, code, from, to, origin);\r\n    },\r\n    getRange: function(from, to, lineSep) {\r\n      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));\r\n      if (lineSep === false) return lines;\r\n      return lines.join(lineSep || this.lineSeparator());\r\n    },\r\n\r\n    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},\r\n\r\n    getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},\r\n    getLineNumber: function(line) {return lineNo(line);},\r\n\r\n    getLineHandleVisualStart: function(line) {\r\n      if (typeof line == \"number\") line = getLine(this, line);\r\n      return visualLine(line);\r\n    },\r\n\r\n    lineCount: function() {return this.size;},\r\n    firstLine: function() {return this.first;},\r\n    lastLine: function() {return this.first + this.size - 1;},\r\n\r\n    clipPos: function(pos) {return clipPos(this, pos);},\r\n\r\n    getCursor: function(start) {\r\n      var range = this.sel.primary(), pos;\r\n      if (start == null || start == \"head\") pos = range.head;\r\n      else if (start == \"anchor\") pos = range.anchor;\r\n      else if (start == \"end\" || start == \"to\" || start === false) pos = range.to();\r\n      else pos = range.from();\r\n      return pos;\r\n    },\r\n    listSelections: function() { return this.sel.ranges; },\r\n    somethingSelected: function() {return this.sel.somethingSelected();},\r\n\r\n    setCursor: docMethodOp(function(line, ch, options) {\r\n      setSimpleSelection(this, clipPos(this, typeof line == \"number\" ? Pos(line, ch || 0) : line), null, options);\r\n    }),\r\n    setSelection: docMethodOp(function(anchor, head, options) {\r\n      setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);\r\n    }),\r\n    extendSelection: docMethodOp(function(head, other, options) {\r\n      extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);\r\n    }),\r\n    extendSelections: docMethodOp(function(heads, options) {\r\n      extendSelections(this, clipPosArray(this, heads, options));\r\n    }),\r\n    extendSelectionsBy: docMethodOp(function(f, options) {\r\n      extendSelections(this, map(this.sel.ranges, f), options);\r\n    }),\r\n    setSelections: docMethodOp(function(ranges, primary, options) {\r\n      if (!ranges.length) return;\r\n      for (var i = 0, out = []; i < ranges.length; i++)\r\n        out[i] = new Range(clipPos(this, ranges[i].anchor),\r\n                           clipPos(this, ranges[i].head));\r\n      if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex);\r\n      setSelection(this, normalizeSelection(out, primary), options);\r\n    }),\r\n    addSelection: docMethodOp(function(anchor, head, options) {\r\n      var ranges = this.sel.ranges.slice(0);\r\n      ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));\r\n      setSelection(this, normalizeSelection(ranges, ranges.length - 1), options);\r\n    }),\r\n\r\n    getSelection: function(lineSep) {\r\n      var ranges = this.sel.ranges, lines;\r\n      for (var i = 0; i < ranges.length; i++) {\r\n        var sel = getBetween(this, ranges[i].from(), ranges[i].to());\r\n        lines = lines ? lines.concat(sel) : sel;\r\n      }\r\n      if (lineSep === false) return lines;\r\n      else return lines.join(lineSep || this.lineSeparator());\r\n    },\r\n    getSelections: function(lineSep) {\r\n      var parts = [], ranges = this.sel.ranges;\r\n      for (var i = 0; i < ranges.length; i++) {\r\n        var sel = getBetween(this, ranges[i].from(), ranges[i].to());\r\n        if (lineSep !== false) sel = sel.join(lineSep || this.lineSeparator());\r\n        parts[i] = sel;\r\n      }\r\n      return parts;\r\n    },\r\n    replaceSelection: function(code, collapse, origin) {\r\n      var dup = [];\r\n      for (var i = 0; i < this.sel.ranges.length; i++)\r\n        dup[i] = code;\r\n      this.replaceSelections(dup, collapse, origin || \"+input\");\r\n    },\r\n    replaceSelections: docMethodOp(function(code, collapse, origin) {\r\n      var changes = [], sel = this.sel;\r\n      for (var i = 0; i < sel.ranges.length; i++) {\r\n        var range = sel.ranges[i];\r\n        changes[i] = {from: range.from(), to: range.to(), text: this.splitLines(code[i]), origin: origin};\r\n      }\r\n      var newSel = collapse && collapse != \"end\" && computeReplacedSel(this, changes, collapse);\r\n      for (var i = changes.length - 1; i >= 0; i--)\r\n        makeChange(this, changes[i]);\r\n      if (newSel) setSelectionReplaceHistory(this, newSel);\r\n      else if (this.cm) ensureCursorVisible(this.cm);\r\n    }),\r\n    undo: docMethodOp(function() {makeChangeFromHistory(this, \"undo\");}),\r\n    redo: docMethodOp(function() {makeChangeFromHistory(this, \"redo\");}),\r\n    undoSelection: docMethodOp(function() {makeChangeFromHistory(this, \"undo\", true);}),\r\n    redoSelection: docMethodOp(function() {makeChangeFromHistory(this, \"redo\", true);}),\r\n\r\n    setExtending: function(val) {this.extend = val;},\r\n    getExtending: function() {return this.extend;},\r\n\r\n    historySize: function() {\r\n      var hist = this.history, done = 0, undone = 0;\r\n      for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done;\r\n      for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone;\r\n      return {undo: done, redo: undone};\r\n    },\r\n    clearHistory: function() {this.history = new History(this.history.maxGeneration);},\r\n\r\n    markClean: function() {\r\n      this.cleanGeneration = this.changeGeneration(true);\r\n    },\r\n    changeGeneration: function(forceSplit) {\r\n      if (forceSplit)\r\n        this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null;\r\n      return this.history.generation;\r\n    },\r\n    isClean: function (gen) {\r\n      return this.history.generation == (gen || this.cleanGeneration);\r\n    },\r\n\r\n    getHistory: function() {\r\n      return {done: copyHistoryArray(this.history.done),\r\n              undone: copyHistoryArray(this.history.undone)};\r\n    },\r\n    setHistory: function(histData) {\r\n      var hist = this.history = new History(this.history.maxGeneration);\r\n      hist.done = copyHistoryArray(histData.done.slice(0), null, true);\r\n      hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);\r\n    },\r\n\r\n    addLineClass: docMethodOp(function(handle, where, cls) {\r\n      return changeLine(this, handle, where == \"gutter\" ? \"gutter\" : \"class\", function(line) {\r\n        var prop = where == \"text\" ? \"textClass\"\r\n                 : where == \"background\" ? \"bgClass\"\r\n                 : where == \"gutter\" ? \"gutterClass\" : \"wrapClass\";\r\n        if (!line[prop]) line[prop] = cls;\r\n        else if (classTest(cls).test(line[prop])) return false;\r\n        else line[prop] += \" \" + cls;\r\n        return true;\r\n      });\r\n    }),\r\n    removeLineClass: docMethodOp(function(handle, where, cls) {\r\n      return changeLine(this, handle, where == \"gutter\" ? \"gutter\" : \"class\", function(line) {\r\n        var prop = where == \"text\" ? \"textClass\"\r\n                 : where == \"background\" ? \"bgClass\"\r\n                 : where == \"gutter\" ? \"gutterClass\" : \"wrapClass\";\r\n        var cur = line[prop];\r\n        if (!cur) return false;\r\n        else if (cls == null) line[prop] = null;\r\n        else {\r\n          var found = cur.match(classTest(cls));\r\n          if (!found) return false;\r\n          var end = found.index + found[0].length;\r\n          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? \"\" : \" \") + cur.slice(end) || null;\r\n        }\r\n        return true;\r\n      });\r\n    }),\r\n\r\n    addLineWidget: docMethodOp(function(handle, node, options) {\r\n      return addLineWidget(this, handle, node, options);\r\n    }),\r\n    removeLineWidget: function(widget) { widget.clear(); },\r\n\r\n    markText: function(from, to, options) {\r\n      return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || \"range\");\r\n    },\r\n    setBookmark: function(pos, options) {\r\n      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),\r\n                      insertLeft: options && options.insertLeft,\r\n                      clearWhenEmpty: false, shared: options && options.shared,\r\n                      handleMouseEvents: options && options.handleMouseEvents};\r\n      pos = clipPos(this, pos);\r\n      return markText(this, pos, pos, realOpts, \"bookmark\");\r\n    },\r\n    findMarksAt: function(pos) {\r\n      pos = clipPos(this, pos);\r\n      var markers = [], spans = getLine(this, pos.line).markedSpans;\r\n      if (spans) for (var i = 0; i < spans.length; ++i) {\r\n        var span = spans[i];\r\n        if ((span.from == null || span.from <= pos.ch) &&\r\n            (span.to == null || span.to >= pos.ch))\r\n          markers.push(span.marker.parent || span.marker);\r\n      }\r\n      return markers;\r\n    },\r\n    findMarks: function(from, to, filter) {\r\n      from = clipPos(this, from); to = clipPos(this, to);\r\n      var found = [], lineNo = from.line;\r\n      this.iter(from.line, to.line + 1, function(line) {\r\n        var spans = line.markedSpans;\r\n        if (spans) for (var i = 0; i < spans.length; i++) {\r\n          var span = spans[i];\r\n          if (!(lineNo == from.line && from.ch > span.to ||\r\n                span.from == null && lineNo != from.line||\r\n                lineNo == to.line && span.from > to.ch) &&\r\n              (!filter || filter(span.marker)))\r\n            found.push(span.marker.parent || span.marker);\r\n        }\r\n        ++lineNo;\r\n      });\r\n      return found;\r\n    },\r\n    getAllMarks: function() {\r\n      var markers = [];\r\n      this.iter(function(line) {\r\n        var sps = line.markedSpans;\r\n        if (sps) for (var i = 0; i < sps.length; ++i)\r\n          if (sps[i].from != null) markers.push(sps[i].marker);\r\n      });\r\n      return markers;\r\n    },\r\n\r\n    posFromIndex: function(off) {\r\n      var ch, lineNo = this.first;\r\n      this.iter(function(line) {\r\n        var sz = line.text.length + 1;\r\n        if (sz > off) { ch = off; return true; }\r\n        off -= sz;\r\n        ++lineNo;\r\n      });\r\n      return clipPos(this, Pos(lineNo, ch));\r\n    },\r\n    indexFromPos: function (coords) {\r\n      coords = clipPos(this, coords);\r\n      var index = coords.ch;\r\n      if (coords.line < this.first || coords.ch < 0) return 0;\r\n      this.iter(this.first, coords.line, function (line) {\r\n        index += line.text.length + 1;\r\n      });\r\n      return index;\r\n    },\r\n\r\n    copy: function(copyHistory) {\r\n      var doc = new Doc(getLines(this, this.first, this.first + this.size),\r\n                        this.modeOption, this.first, this.lineSep);\r\n      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;\r\n      doc.sel = this.sel;\r\n      doc.extend = false;\r\n      if (copyHistory) {\r\n        doc.history.undoDepth = this.history.undoDepth;\r\n        doc.setHistory(this.getHistory());\r\n      }\r\n      return doc;\r\n    },\r\n\r\n    linkedDoc: function(options) {\r\n      if (!options) options = {};\r\n      var from = this.first, to = this.first + this.size;\r\n      if (options.from != null && options.from > from) from = options.from;\r\n      if (options.to != null && options.to < to) to = options.to;\r\n      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep);\r\n      if (options.sharedHist) copy.history = this.history;\r\n      (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});\r\n      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];\r\n      copySharedMarkers(copy, findSharedMarkers(this));\r\n      return copy;\r\n    },\r\n    unlinkDoc: function(other) {\r\n      if (other instanceof CodeMirror) other = other.doc;\r\n      if (this.linked) for (var i = 0; i < this.linked.length; ++i) {\r\n        var link = this.linked[i];\r\n        if (link.doc != other) continue;\r\n        this.linked.splice(i, 1);\r\n        other.unlinkDoc(this);\r\n        detachSharedMarkers(findSharedMarkers(this));\r\n        break;\r\n      }\r\n      // If the histories were shared, split them again\r\n      if (other.history == this.history) {\r\n        var splitIds = [other.id];\r\n        linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);\r\n        other.history = new History(null);\r\n        other.history.done = copyHistoryArray(this.history.done, splitIds);\r\n        other.history.undone = copyHistoryArray(this.history.undone, splitIds);\r\n      }\r\n    },\r\n    iterLinkedDocs: function(f) {linkedDocs(this, f);},\r\n\r\n    getMode: function() {return this.mode;},\r\n    getEditor: function() {return this.cm;},\r\n\r\n    splitLines: function(str) {\r\n      if (this.lineSep) return str.split(this.lineSep);\r\n      return splitLinesAuto(str);\r\n    },\r\n    lineSeparator: function() { return this.lineSep || \"\\n\"; }\r\n  });\r\n\r\n  // Public alias.\r\n  Doc.prototype.eachLine = Doc.prototype.iter;\r\n\r\n  // Set up methods on CodeMirror's prototype to redirect to the editor's document.\r\n  var dontDelegate = \"iter insert remove copy getEditor constructor\".split(\" \");\r\n  for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)\r\n    CodeMirror.prototype[prop] = (function(method) {\r\n      return function() {return method.apply(this.doc, arguments);};\r\n    })(Doc.prototype[prop]);\r\n\r\n  eventMixin(Doc);\r\n\r\n  // Call f for all linked documents.\r\n  function linkedDocs(doc, f, sharedHistOnly) {\r\n    function propagate(doc, skip, sharedHist) {\r\n      if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {\r\n        var rel = doc.linked[i];\r\n        if (rel.doc == skip) continue;\r\n        var shared = sharedHist && rel.sharedHist;\r\n        if (sharedHistOnly && !shared) continue;\r\n        f(rel.doc, shared);\r\n        propagate(rel.doc, doc, shared);\r\n      }\r\n    }\r\n    propagate(doc, null, true);\r\n  }\r\n\r\n  // Attach a document to an editor.\r\n  function attachDoc(cm, doc) {\r\n    if (doc.cm) throw new Error(\"This document is already in use.\");\r\n    cm.doc = doc;\r\n    doc.cm = cm;\r\n    estimateLineHeights(cm);\r\n    loadMode(cm);\r\n    if (!cm.options.lineWrapping) findMaxLine(cm);\r\n    cm.options.mode = doc.modeOption;\r\n    regChange(cm);\r\n  }\r\n\r\n  // LINE UTILITIES\r\n\r\n  // Find the line object corresponding to the given line number.\r\n  function getLine(doc, n) {\r\n    n -= doc.first;\r\n    if (n < 0 || n >= doc.size) throw new Error(\"There is no line \" + (n + doc.first) + \" in the document.\");\r\n    for (var chunk = doc; !chunk.lines;) {\r\n      for (var i = 0;; ++i) {\r\n        var child = chunk.children[i], sz = child.chunkSize();\r\n        if (n < sz) { chunk = child; break; }\r\n        n -= sz;\r\n      }\r\n    }\r\n    return chunk.lines[n];\r\n  }\r\n\r\n  // Get the part of a document between two positions, as an array of\r\n  // strings.\r\n  function getBetween(doc, start, end) {\r\n    var out = [], n = start.line;\r\n    doc.iter(start.line, end.line + 1, function(line) {\r\n      var text = line.text;\r\n      if (n == end.line) text = text.slice(0, end.ch);\r\n      if (n == start.line) text = text.slice(start.ch);\r\n      out.push(text);\r\n      ++n;\r\n    });\r\n    return out;\r\n  }\r\n  // Get the lines between from and to, as array of strings.\r\n  function getLines(doc, from, to) {\r\n    var out = [];\r\n    doc.iter(from, to, function(line) { out.push(line.text); });\r\n    return out;\r\n  }\r\n\r\n  // Update the height of a line, propagating the height change\r\n  // upwards to parent nodes.\r\n  function updateLineHeight(line, height) {\r\n    var diff = height - line.height;\r\n    if (diff) for (var n = line; n; n = n.parent) n.height += diff;\r\n  }\r\n\r\n  // Given a line object, find its line number by walking up through\r\n  // its parent links.\r\n  function lineNo(line) {\r\n    if (line.parent == null) return null;\r\n    var cur = line.parent, no = indexOf(cur.lines, line);\r\n    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {\r\n      for (var i = 0;; ++i) {\r\n        if (chunk.children[i] == cur) break;\r\n        no += chunk.children[i].chunkSize();\r\n      }\r\n    }\r\n    return no + cur.first;\r\n  }\r\n\r\n  // Find the line at the given vertical position, using the height\r\n  // information in the document tree.\r\n  function lineAtHeight(chunk, h) {\r\n    var n = chunk.first;\r\n    outer: do {\r\n      for (var i = 0; i < chunk.children.length; ++i) {\r\n        var child = chunk.children[i], ch = child.height;\r\n        if (h < ch) { chunk = child; continue outer; }\r\n        h -= ch;\r\n        n += child.chunkSize();\r\n      }\r\n      return n;\r\n    } while (!chunk.lines);\r\n    for (var i = 0; i < chunk.lines.length; ++i) {\r\n      var line = chunk.lines[i], lh = line.height;\r\n      if (h < lh) break;\r\n      h -= lh;\r\n    }\r\n    return n + i;\r\n  }\r\n\r\n\r\n  // Find the height above the given line.\r\n  function heightAtLine(lineObj) {\r\n    lineObj = visualLine(lineObj);\r\n\r\n    var h = 0, chunk = lineObj.parent;\r\n    for (var i = 0; i < chunk.lines.length; ++i) {\r\n      var line = chunk.lines[i];\r\n      if (line == lineObj) break;\r\n      else h += line.height;\r\n    }\r\n    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {\r\n      for (var i = 0; i < p.children.length; ++i) {\r\n        var cur = p.children[i];\r\n        if (cur == chunk) break;\r\n        else h += cur.height;\r\n      }\r\n    }\r\n    return h;\r\n  }\r\n\r\n  // Get the bidi ordering for the given line (and cache it). Returns\r\n  // false for lines that are fully left-to-right, and an array of\r\n  // BidiSpan objects otherwise.\r\n  function getOrder(line) {\r\n    var order = line.order;\r\n    if (order == null) order = line.order = bidiOrdering(line.text);\r\n    return order;\r\n  }\r\n\r\n  // HISTORY\r\n\r\n  function History(startGen) {\r\n    // Arrays of change events and selections. Doing something adds an\r\n    // event to done and clears undo. Undoing moves events from done\r\n    // to undone, redoing moves them in the other direction.\r\n    this.done = []; this.undone = [];\r\n    this.undoDepth = Infinity;\r\n    // Used to track when changes can be merged into a single undo\r\n    // event\r\n    this.lastModTime = this.lastSelTime = 0;\r\n    this.lastOp = this.lastSelOp = null;\r\n    this.lastOrigin = this.lastSelOrigin = null;\r\n    // Used by the isClean() method\r\n    this.generation = this.maxGeneration = startGen || 1;\r\n  }\r\n\r\n  // Create a history change event from an updateDoc-style change\r\n  // object.\r\n  function historyChangeFromChange(doc, change) {\r\n    var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};\r\n    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);\r\n    linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);\r\n    return histChange;\r\n  }\r\n\r\n  // Pop all selection events off the end of a history array. Stop at\r\n  // a change event.\r\n  function clearSelectionEvents(array) {\r\n    while (array.length) {\r\n      var last = lst(array);\r\n      if (last.ranges) array.pop();\r\n      else break;\r\n    }\r\n  }\r\n\r\n  // Find the top change event in the history. Pop off selection\r\n  // events that are in the way.\r\n  function lastChangeEvent(hist, force) {\r\n    if (force) {\r\n      clearSelectionEvents(hist.done);\r\n      return lst(hist.done);\r\n    } else if (hist.done.length && !lst(hist.done).ranges) {\r\n      return lst(hist.done);\r\n    } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {\r\n      hist.done.pop();\r\n      return lst(hist.done);\r\n    }\r\n  }\r\n\r\n  // Register a change in the history. Merges changes that are within\r\n  // a single operation, ore are close together with an origin that\r\n  // allows merging (starting with \"+\") into a single event.\r\n  function addChangeToHistory(doc, change, selAfter, opId) {\r\n    var hist = doc.history;\r\n    hist.undone.length = 0;\r\n    var time = +new Date, cur;\r\n\r\n    if ((hist.lastOp == opId ||\r\n         hist.lastOrigin == change.origin && change.origin &&\r\n         ((change.origin.charAt(0) == \"+\" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||\r\n          change.origin.charAt(0) == \"*\")) &&\r\n        (cur = lastChangeEvent(hist, hist.lastOp == opId))) {\r\n      // Merge this change into the last event\r\n      var last = lst(cur.changes);\r\n      if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {\r\n        // Optimized case for simple insertion -- don't want to add\r\n        // new changesets for every character typed\r\n        last.to = changeEnd(change);\r\n      } else {\r\n        // Add new sub-event\r\n        cur.changes.push(historyChangeFromChange(doc, change));\r\n      }\r\n    } else {\r\n      // Can not be merged, start a new event.\r\n      var before = lst(hist.done);\r\n      if (!before || !before.ranges)\r\n        pushSelectionToHistory(doc.sel, hist.done);\r\n      cur = {changes: [historyChangeFromChange(doc, change)],\r\n             generation: hist.generation};\r\n      hist.done.push(cur);\r\n      while (hist.done.length > hist.undoDepth) {\r\n        hist.done.shift();\r\n        if (!hist.done[0].ranges) hist.done.shift();\r\n      }\r\n    }\r\n    hist.done.push(selAfter);\r\n    hist.generation = ++hist.maxGeneration;\r\n    hist.lastModTime = hist.lastSelTime = time;\r\n    hist.lastOp = hist.lastSelOp = opId;\r\n    hist.lastOrigin = hist.lastSelOrigin = change.origin;\r\n\r\n    if (!last) signal(doc, \"historyAdded\");\r\n  }\r\n\r\n  function selectionEventCanBeMerged(doc, origin, prev, sel) {\r\n    var ch = origin.charAt(0);\r\n    return ch == \"*\" ||\r\n      ch == \"+\" &&\r\n      prev.ranges.length == sel.ranges.length &&\r\n      prev.somethingSelected() == sel.somethingSelected() &&\r\n      new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500);\r\n  }\r\n\r\n  // Called whenever the selection changes, sets the new selection as\r\n  // the pending selection in the history, and pushes the old pending\r\n  // selection into the 'done' array when it was significantly\r\n  // different (in number of selected ranges, emptiness, or time).\r\n  function addSelectionToHistory(doc, sel, opId, options) {\r\n    var hist = doc.history, origin = options && options.origin;\r\n\r\n    // A new event is started when the previous origin does not match\r\n    // the current, or the origins don't allow matching. Origins\r\n    // starting with * are always merged, those starting with + are\r\n    // merged when similar and close together in time.\r\n    if (opId == hist.lastSelOp ||\r\n        (origin && hist.lastSelOrigin == origin &&\r\n         (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||\r\n          selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))\r\n      hist.done[hist.done.length - 1] = sel;\r\n    else\r\n      pushSelectionToHistory(sel, hist.done);\r\n\r\n    hist.lastSelTime = +new Date;\r\n    hist.lastSelOrigin = origin;\r\n    hist.lastSelOp = opId;\r\n    if (options && options.clearRedo !== false)\r\n      clearSelectionEvents(hist.undone);\r\n  }\r\n\r\n  function pushSelectionToHistory(sel, dest) {\r\n    var top = lst(dest);\r\n    if (!(top && top.ranges && top.equals(sel)))\r\n      dest.push(sel);\r\n  }\r\n\r\n  // Used to store marked span information in the history.\r\n  function attachLocalSpans(doc, change, from, to) {\r\n    var existing = change[\"spans_\" + doc.id], n = 0;\r\n    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {\r\n      if (line.markedSpans)\r\n        (existing || (existing = change[\"spans_\" + doc.id] = {}))[n] = line.markedSpans;\r\n      ++n;\r\n    });\r\n  }\r\n\r\n  // When un/re-doing restores text containing marked spans, those\r\n  // that have been explicitly cleared should not be restored.\r\n  function removeClearedSpans(spans) {\r\n    if (!spans) return null;\r\n    for (var i = 0, out; i < spans.length; ++i) {\r\n      if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }\r\n      else if (out) out.push(spans[i]);\r\n    }\r\n    return !out ? spans : out.length ? out : null;\r\n  }\r\n\r\n  // Retrieve and filter the old marked spans stored in a change event.\r\n  function getOldSpans(doc, change) {\r\n    var found = change[\"spans_\" + doc.id];\r\n    if (!found) return null;\r\n    for (var i = 0, nw = []; i < change.text.length; ++i)\r\n      nw.push(removeClearedSpans(found[i]));\r\n    return nw;\r\n  }\r\n\r\n  // Used both to provide a JSON-safe object in .getHistory, and, when\r\n  // detaching a document, to split the history in two\r\n  function copyHistoryArray(events, newGroup, instantiateSel) {\r\n    for (var i = 0, copy = []; i < events.length; ++i) {\r\n      var event = events[i];\r\n      if (event.ranges) {\r\n        copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);\r\n        continue;\r\n      }\r\n      var changes = event.changes, newChanges = [];\r\n      copy.push({changes: newChanges});\r\n      for (var j = 0; j < changes.length; ++j) {\r\n        var change = changes[j], m;\r\n        newChanges.push({from: change.from, to: change.to, text: change.text});\r\n        if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\\d+)$/)) {\r\n          if (indexOf(newGroup, Number(m[1])) > -1) {\r\n            lst(newChanges)[prop] = change[prop];\r\n            delete change[prop];\r\n          }\r\n        }\r\n      }\r\n    }\r\n    return copy;\r\n  }\r\n\r\n  // Rebasing/resetting history to deal with externally-sourced changes\r\n\r\n  function rebaseHistSelSingle(pos, from, to, diff) {\r\n    if (to < pos.line) {\r\n      pos.line += diff;\r\n    } else if (from < pos.line) {\r\n      pos.line = from;\r\n      pos.ch = 0;\r\n    }\r\n  }\r\n\r\n  // Tries to rebase an array of history events given a change in the\r\n  // document. If the change touches the same lines as the event, the\r\n  // event, and everything 'behind' it, is discarded. If the change is\r\n  // before the event, the event's positions are updated. Uses a\r\n  // copy-on-write scheme for the positions, to avoid having to\r\n  // reallocate them all on every rebase, but also avoid problems with\r\n  // shared position objects being unsafely updated.\r\n  function rebaseHistArray(array, from, to, diff) {\r\n    for (var i = 0; i < array.length; ++i) {\r\n      var sub = array[i], ok = true;\r\n      if (sub.ranges) {\r\n        if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }\r\n        for (var j = 0; j < sub.ranges.length; j++) {\r\n          rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);\r\n          rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);\r\n        }\r\n        continue;\r\n      }\r\n      for (var j = 0; j < sub.changes.length; ++j) {\r\n        var cur = sub.changes[j];\r\n        if (to < cur.from.line) {\r\n          cur.from = Pos(cur.from.line + diff, cur.from.ch);\r\n          cur.to = Pos(cur.to.line + diff, cur.to.ch);\r\n        } else if (from <= cur.to.line) {\r\n          ok = false;\r\n          break;\r\n        }\r\n      }\r\n      if (!ok) {\r\n        array.splice(0, i + 1);\r\n        i = 0;\r\n      }\r\n    }\r\n  }\r\n\r\n  function rebaseHist(hist, change) {\r\n    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;\r\n    rebaseHistArray(hist.done, from, to, diff);\r\n    rebaseHistArray(hist.undone, from, to, diff);\r\n  }\r\n\r\n  // EVENT UTILITIES\r\n\r\n  // Due to the fact that we still support jurassic IE versions, some\r\n  // compatibility wrappers are needed.\r\n\r\n  var e_preventDefault = CodeMirror.e_preventDefault = function(e) {\r\n    if (e.preventDefault) e.preventDefault();\r\n    else e.returnValue = false;\r\n  };\r\n  var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) {\r\n    if (e.stopPropagation) e.stopPropagation();\r\n    else e.cancelBubble = true;\r\n  };\r\n  function e_defaultPrevented(e) {\r\n    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;\r\n  }\r\n  var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);};\r\n\r\n  function e_target(e) {return e.target || e.srcElement;}\r\n  function e_button(e) {\r\n    var b = e.which;\r\n    if (b == null) {\r\n      if (e.button & 1) b = 1;\r\n      else if (e.button & 2) b = 3;\r\n      else if (e.button & 4) b = 2;\r\n    }\r\n    if (mac && e.ctrlKey && b == 1) b = 3;\r\n    return b;\r\n  }\r\n\r\n  // EVENT HANDLING\r\n\r\n  // Lightweight event framework. on/off also work on DOM nodes,\r\n  // registering native DOM handlers.\r\n\r\n  var on = CodeMirror.on = function(emitter, type, f) {\r\n    if (emitter.addEventListener)\r\n      emitter.addEventListener(type, f, false);\r\n    else if (emitter.attachEvent)\r\n      emitter.attachEvent(\"on\" + type, f);\r\n    else {\r\n      var map = emitter._handlers || (emitter._handlers = {});\r\n      var arr = map[type] || (map[type] = []);\r\n      arr.push(f);\r\n    }\r\n  };\r\n\r\n  var noHandlers = []\r\n  function getHandlers(emitter, type, copy) {\r\n    var arr = emitter._handlers && emitter._handlers[type]\r\n    if (copy) return arr && arr.length > 0 ? arr.slice() : noHandlers\r\n    else return arr || noHandlers\r\n  }\r\n\r\n  var off = CodeMirror.off = function(emitter, type, f) {\r\n    if (emitter.removeEventListener)\r\n      emitter.removeEventListener(type, f, false);\r\n    else if (emitter.detachEvent)\r\n      emitter.detachEvent(\"on\" + type, f);\r\n    else {\r\n      var handlers = getHandlers(emitter, type, false)\r\n      for (var i = 0; i < handlers.length; ++i)\r\n        if (handlers[i] == f) { handlers.splice(i, 1); break; }\r\n    }\r\n  };\r\n\r\n  var signal = CodeMirror.signal = function(emitter, type /*, values...*/) {\r\n    var handlers = getHandlers(emitter, type, true)\r\n    if (!handlers.length) return;\r\n    var args = Array.prototype.slice.call(arguments, 2);\r\n    for (var i = 0; i < handlers.length; ++i) handlers[i].apply(null, args);\r\n  };\r\n\r\n  var orphanDelayedCallbacks = null;\r\n\r\n  // Often, we want to signal events at a point where we are in the\r\n  // middle of some work, but don't want the handler to start calling\r\n  // other methods on the editor, which might be in an inconsistent\r\n  // state or simply not expect any other events to happen.\r\n  // signalLater looks whether there are any handlers, and schedules\r\n  // them to be executed when the last operation ends, or, if no\r\n  // operation is active, when a timeout fires.\r\n  function signalLater(emitter, type /*, values...*/) {\r\n    var arr = getHandlers(emitter, type, false)\r\n    if (!arr.length) return;\r\n    var args = Array.prototype.slice.call(arguments, 2), list;\r\n    if (operationGroup) {\r\n      list = operationGroup.delayedCallbacks;\r\n    } else if (orphanDelayedCallbacks) {\r\n      list = orphanDelayedCallbacks;\r\n    } else {\r\n      list = orphanDelayedCallbacks = [];\r\n      setTimeout(fireOrphanDelayed, 0);\r\n    }\r\n    function bnd(f) {return function(){f.apply(null, args);};};\r\n    for (var i = 0; i < arr.length; ++i)\r\n      list.push(bnd(arr[i]));\r\n  }\r\n\r\n  function fireOrphanDelayed() {\r\n    var delayed = orphanDelayedCallbacks;\r\n    orphanDelayedCallbacks = null;\r\n    for (var i = 0; i < delayed.length; ++i) delayed[i]();\r\n  }\r\n\r\n  // The DOM events that CodeMirror handles can be overridden by\r\n  // registering a (non-DOM) handler on the editor for the event name,\r\n  // and preventDefault-ing the event in that handler.\r\n  function signalDOMEvent(cm, e, override) {\r\n    if (typeof e == \"string\")\r\n      e = {type: e, preventDefault: function() { this.defaultPrevented = true; }};\r\n    signal(cm, override || e.type, cm, e);\r\n    return e_defaultPrevented(e) || e.codemirrorIgnore;\r\n  }\r\n\r\n  function signalCursorActivity(cm) {\r\n    var arr = cm._handlers && cm._handlers.cursorActivity;\r\n    if (!arr) return;\r\n    var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);\r\n    for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1)\r\n      set.push(arr[i]);\r\n  }\r\n\r\n  function hasHandler(emitter, type) {\r\n    return getHandlers(emitter, type).length > 0\r\n  }\r\n\r\n  // Add on and off methods to a constructor's prototype, to make\r\n  // registering events on such objects more convenient.\r\n  function eventMixin(ctor) {\r\n    ctor.prototype.on = function(type, f) {on(this, type, f);};\r\n    ctor.prototype.off = function(type, f) {off(this, type, f);};\r\n  }\r\n\r\n  // MISC UTILITIES\r\n\r\n  // Number of pixels added to scroller and sizer to hide scrollbar\r\n  var scrollerGap = 30;\r\n\r\n  // Returned or thrown by various protocols to signal 'I'm not\r\n  // handling this'.\r\n  var Pass = CodeMirror.Pass = {toString: function(){return \"CodeMirror.Pass\";}};\r\n\r\n  // Reused option objects for setSelection & friends\r\n  var sel_dontScroll = {scroll: false}, sel_mouse = {origin: \"*mouse\"}, sel_move = {origin: \"+move\"};\r\n\r\n  function Delayed() {this.id = null;}\r\n  Delayed.prototype.set = function(ms, f) {\r\n    clearTimeout(this.id);\r\n    this.id = setTimeout(f, ms);\r\n  };\r\n\r\n  // Counts the column offset in a string, taking tabs into account.\r\n  // Used mostly to find indentation.\r\n  var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) {\r\n    if (end == null) {\r\n      end = string.search(/[^\\s\\u00a0]/);\r\n      if (end == -1) end = string.length;\r\n    }\r\n    for (var i = startIndex || 0, n = startValue || 0;;) {\r\n      var nextTab = string.indexOf(\"\\t\", i);\r\n      if (nextTab < 0 || nextTab >= end)\r\n        return n + (end - i);\r\n      n += nextTab - i;\r\n      n += tabSize - (n % tabSize);\r\n      i = nextTab + 1;\r\n    }\r\n  };\r\n\r\n  // The inverse of countColumn -- find the offset that corresponds to\r\n  // a particular column.\r\n  var findColumn = CodeMirror.findColumn = function(string, goal, tabSize) {\r\n    for (var pos = 0, col = 0;;) {\r\n      var nextTab = string.indexOf(\"\\t\", pos);\r\n      if (nextTab == -1) nextTab = string.length;\r\n      var skipped = nextTab - pos;\r\n      if (nextTab == string.length || col + skipped >= goal)\r\n        return pos + Math.min(skipped, goal - col);\r\n      col += nextTab - pos;\r\n      col += tabSize - (col % tabSize);\r\n      pos = nextTab + 1;\r\n      if (col >= goal) return pos;\r\n    }\r\n  }\r\n\r\n  var spaceStrs = [\"\"];\r\n  function spaceStr(n) {\r\n    while (spaceStrs.length <= n)\r\n      spaceStrs.push(lst(spaceStrs) + \" \");\r\n    return spaceStrs[n];\r\n  }\r\n\r\n  function lst(arr) { return arr[arr.length-1]; }\r\n\r\n  var selectInput = function(node) { node.select(); };\r\n  if (ios) // Mobile Safari apparently has a bug where select() is broken.\r\n    selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; };\r\n  else if (ie) // Suppress mysterious IE10 errors\r\n    selectInput = function(node) { try { node.select(); } catch(_e) {} };\r\n\r\n  function indexOf(array, elt) {\r\n    for (var i = 0; i < array.length; ++i)\r\n      if (array[i] == elt) return i;\r\n    return -1;\r\n  }\r\n  function map(array, f) {\r\n    var out = [];\r\n    for (var i = 0; i < array.length; i++) out[i] = f(array[i], i);\r\n    return out;\r\n  }\r\n\r\n  function nothing() {}\r\n\r\n  function createObj(base, props) {\r\n    var inst;\r\n    if (Object.create) {\r\n      inst = Object.create(base);\r\n    } else {\r\n      nothing.prototype = base;\r\n      inst = new nothing();\r\n    }\r\n    if (props) copyObj(props, inst);\r\n    return inst;\r\n  };\r\n\r\n  function copyObj(obj, target, overwrite) {\r\n    if (!target) target = {};\r\n    for (var prop in obj)\r\n      if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))\r\n        target[prop] = obj[prop];\r\n    return target;\r\n  }\r\n\r\n  function bind(f) {\r\n    var args = Array.prototype.slice.call(arguments, 1);\r\n    return function(){return f.apply(null, args);};\r\n  }\r\n\r\n  var nonASCIISingleCaseWordChar = /[\\u00df\\u0587\\u0590-\\u05f4\\u0600-\\u06ff\\u3040-\\u309f\\u30a0-\\u30ff\\u3400-\\u4db5\\u4e00-\\u9fcc\\uac00-\\ud7af]/;\r\n  var isWordCharBasic = CodeMirror.isWordChar = function(ch) {\r\n    return /\\w/.test(ch) || ch > \"\\x80\" &&\r\n      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));\r\n  };\r\n  function isWordChar(ch, helper) {\r\n    if (!helper) return isWordCharBasic(ch);\r\n    if (helper.source.indexOf(\"\\\\w\") > -1 && isWordCharBasic(ch)) return true;\r\n    return helper.test(ch);\r\n  }\r\n\r\n  function isEmpty(obj) {\r\n    for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;\r\n    return true;\r\n  }\r\n\r\n  // Extending unicode characters. A series of a non-extending char +\r\n  // any number of extending chars is treated as a single unit as far\r\n  // as editing and measuring is concerned. This is not fully correct,\r\n  // since some scripts/fonts/browsers also treat other configurations\r\n  // of code points as a group.\r\n  var extendingChars = /[\\u0300-\\u036f\\u0483-\\u0489\\u0591-\\u05bd\\u05bf\\u05c1\\u05c2\\u05c4\\u05c5\\u05c7\\u0610-\\u061a\\u064b-\\u065e\\u0670\\u06d6-\\u06dc\\u06de-\\u06e4\\u06e7\\u06e8\\u06ea-\\u06ed\\u0711\\u0730-\\u074a\\u07a6-\\u07b0\\u07eb-\\u07f3\\u0816-\\u0819\\u081b-\\u0823\\u0825-\\u0827\\u0829-\\u082d\\u0900-\\u0902\\u093c\\u0941-\\u0948\\u094d\\u0951-\\u0955\\u0962\\u0963\\u0981\\u09bc\\u09be\\u09c1-\\u09c4\\u09cd\\u09d7\\u09e2\\u09e3\\u0a01\\u0a02\\u0a3c\\u0a41\\u0a42\\u0a47\\u0a48\\u0a4b-\\u0a4d\\u0a51\\u0a70\\u0a71\\u0a75\\u0a81\\u0a82\\u0abc\\u0ac1-\\u0ac5\\u0ac7\\u0ac8\\u0acd\\u0ae2\\u0ae3\\u0b01\\u0b3c\\u0b3e\\u0b3f\\u0b41-\\u0b44\\u0b4d\\u0b56\\u0b57\\u0b62\\u0b63\\u0b82\\u0bbe\\u0bc0\\u0bcd\\u0bd7\\u0c3e-\\u0c40\\u0c46-\\u0c48\\u0c4a-\\u0c4d\\u0c55\\u0c56\\u0c62\\u0c63\\u0cbc\\u0cbf\\u0cc2\\u0cc6\\u0ccc\\u0ccd\\u0cd5\\u0cd6\\u0ce2\\u0ce3\\u0d3e\\u0d41-\\u0d44\\u0d4d\\u0d57\\u0d62\\u0d63\\u0dca\\u0dcf\\u0dd2-\\u0dd4\\u0dd6\\u0ddf\\u0e31\\u0e34-\\u0e3a\\u0e47-\\u0e4e\\u0eb1\\u0eb4-\\u0eb9\\u0ebb\\u0ebc\\u0ec8-\\u0ecd\\u0f18\\u0f19\\u0f35\\u0f37\\u0f39\\u0f71-\\u0f7e\\u0f80-\\u0f84\\u0f86\\u0f87\\u0f90-\\u0f97\\u0f99-\\u0fbc\\u0fc6\\u102d-\\u1030\\u1032-\\u1037\\u1039\\u103a\\u103d\\u103e\\u1058\\u1059\\u105e-\\u1060\\u1071-\\u1074\\u1082\\u1085\\u1086\\u108d\\u109d\\u135f\\u1712-\\u1714\\u1732-\\u1734\\u1752\\u1753\\u1772\\u1773\\u17b7-\\u17bd\\u17c6\\u17c9-\\u17d3\\u17dd\\u180b-\\u180d\\u18a9\\u1920-\\u1922\\u1927\\u1928\\u1932\\u1939-\\u193b\\u1a17\\u1a18\\u1a56\\u1a58-\\u1a5e\\u1a60\\u1a62\\u1a65-\\u1a6c\\u1a73-\\u1a7c\\u1a7f\\u1b00-\\u1b03\\u1b34\\u1b36-\\u1b3a\\u1b3c\\u1b42\\u1b6b-\\u1b73\\u1b80\\u1b81\\u1ba2-\\u1ba5\\u1ba8\\u1ba9\\u1c2c-\\u1c33\\u1c36\\u1c37\\u1cd0-\\u1cd2\\u1cd4-\\u1ce0\\u1ce2-\\u1ce8\\u1ced\\u1dc0-\\u1de6\\u1dfd-\\u1dff\\u200c\\u200d\\u20d0-\\u20f0\\u2cef-\\u2cf1\\u2de0-\\u2dff\\u302a-\\u302f\\u3099\\u309a\\ua66f-\\ua672\\ua67c\\ua67d\\ua6f0\\ua6f1\\ua802\\ua806\\ua80b\\ua825\\ua826\\ua8c4\\ua8e0-\\ua8f1\\ua926-\\ua92d\\ua947-\\ua951\\ua980-\\ua982\\ua9b3\\ua9b6-\\ua9b9\\ua9bc\\uaa29-\\uaa2e\\uaa31\\uaa32\\uaa35\\uaa36\\uaa43\\uaa4c\\uaab0\\uaab2-\\uaab4\\uaab7\\uaab8\\uaabe\\uaabf\\uaac1\\uabe5\\uabe8\\uabed\\udc00-\\udfff\\ufb1e\\ufe00-\\ufe0f\\ufe20-\\ufe26\\uff9e\\uff9f]/;\r\n  function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); }\r\n\r\n  // DOM UTILITIES\r\n\r\n  function elt(tag, content, className, style) {\r\n    var e = document.createElement(tag);\r\n    if (className) e.className = className;\r\n    if (style) e.style.cssText = style;\r\n    if (typeof content == \"string\") e.appendChild(document.createTextNode(content));\r\n    else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);\r\n    return e;\r\n  }\r\n\r\n  var range;\r\n  if (document.createRange) range = function(node, start, end, endNode) {\r\n    var r = document.createRange();\r\n    r.setEnd(endNode || node, end);\r\n    r.setStart(node, start);\r\n    return r;\r\n  };\r\n  else range = function(node, start, end) {\r\n    var r = document.body.createTextRange();\r\n    try { r.moveToElementText(node.parentNode); }\r\n    catch(e) { return r; }\r\n    r.collapse(true);\r\n    r.moveEnd(\"character\", end);\r\n    r.moveStart(\"character\", start);\r\n    return r;\r\n  };\r\n\r\n  function removeChildren(e) {\r\n    for (var count = e.childNodes.length; count > 0; --count)\r\n      e.removeChild(e.firstChild);\r\n    return e;\r\n  }\r\n\r\n  function removeChildrenAndAdd(parent, e) {\r\n    return removeChildren(parent).appendChild(e);\r\n  }\r\n\r\n  var contains = CodeMirror.contains = function(parent, child) {\r\n    if (child.nodeType == 3) // Android browser always returns false when child is a textnode\r\n      child = child.parentNode;\r\n    if (parent.contains)\r\n      return parent.contains(child);\r\n    do {\r\n      if (child.nodeType == 11) child = child.host;\r\n      if (child == parent) return true;\r\n    } while (child = child.parentNode);\r\n  };\r\n\r\n  function activeElt() {\r\n    var activeElement = document.activeElement;\r\n    while (activeElement && activeElement.root && activeElement.root.activeElement)\r\n      activeElement = activeElement.root.activeElement;\r\n    return activeElement;\r\n  }\r\n  // Older versions of IE throws unspecified error when touching\r\n  // document.activeElement in some cases (during loading, in iframe)\r\n  if (ie && ie_version < 11) activeElt = function() {\r\n    try { return document.activeElement; }\r\n    catch(e) { return document.body; }\r\n  };\r\n\r\n  function classTest(cls) { return new RegExp(\"(^|\\\\s)\" + cls + \"(?:$|\\\\s)\\\\s*\"); }\r\n  var rmClass = CodeMirror.rmClass = function(node, cls) {\r\n    var current = node.className;\r\n    var match = classTest(cls).exec(current);\r\n    if (match) {\r\n      var after = current.slice(match.index + match[0].length);\r\n      node.className = current.slice(0, match.index) + (after ? match[1] + after : \"\");\r\n    }\r\n  };\r\n  var addClass = CodeMirror.addClass = function(node, cls) {\r\n    var current = node.className;\r\n    if (!classTest(cls).test(current)) node.className += (current ? \" \" : \"\") + cls;\r\n  };\r\n  function joinClasses(a, b) {\r\n    var as = a.split(\" \");\r\n    for (var i = 0; i < as.length; i++)\r\n      if (as[i] && !classTest(as[i]).test(b)) b += \" \" + as[i];\r\n    return b;\r\n  }\r\n\r\n  // WINDOW-WIDE EVENTS\r\n\r\n  // These must be handled carefully, because naively registering a\r\n  // handler for each editor will cause the editors to never be\r\n  // garbage collected.\r\n\r\n  function forEachCodeMirror(f) {\r\n    if (!document.body.getElementsByClassName) return;\r\n    var byClass = document.body.getElementsByClassName(\"CodeMirror\");\r\n    for (var i = 0; i < byClass.length; i++) {\r\n      var cm = byClass[i].CodeMirror;\r\n      if (cm) f(cm);\r\n    }\r\n  }\r\n\r\n  var globalsRegistered = false;\r\n  function ensureGlobalHandlers() {\r\n    if (globalsRegistered) return;\r\n    registerGlobalHandlers();\r\n    globalsRegistered = true;\r\n  }\r\n  function registerGlobalHandlers() {\r\n    // When the window resizes, we need to refresh active editors.\r\n    var resizeTimer;\r\n    on(window, \"resize\", function() {\r\n      if (resizeTimer == null) resizeTimer = setTimeout(function() {\r\n        resizeTimer = null;\r\n        forEachCodeMirror(onResize);\r\n      }, 100);\r\n    });\r\n    // When the window loses focus, we want to show the editor as blurred\r\n    on(window, \"blur\", function() {\r\n      forEachCodeMirror(onBlur);\r\n    });\r\n  }\r\n\r\n  // FEATURE DETECTION\r\n\r\n  // Detect drag-and-drop\r\n  var dragAndDrop = function() {\r\n    // There is *some* kind of drag-and-drop support in IE6-8, but I\r\n    // couldn't get it to work yet.\r\n    if (ie && ie_version < 9) return false;\r\n    var div = elt('div');\r\n    return \"draggable\" in div || \"dragDrop\" in div;\r\n  }();\r\n\r\n  var zwspSupported;\r\n  function zeroWidthElement(measure) {\r\n    if (zwspSupported == null) {\r\n      var test = elt(\"span\", \"\\u200b\");\r\n      removeChildrenAndAdd(measure, elt(\"span\", [test, document.createTextNode(\"x\")]));\r\n      if (measure.firstChild.offsetHeight != 0)\r\n        zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8);\r\n    }\r\n    var node = zwspSupported ? elt(\"span\", \"\\u200b\") :\r\n      elt(\"span\", \"\\u00a0\", null, \"display: inline-block; width: 1px; margin-right: -1px\");\r\n    node.setAttribute(\"cm-text\", \"\");\r\n    return node;\r\n  }\r\n\r\n  // Feature-detect IE's crummy client rect reporting for bidi text\r\n  var badBidiRects;\r\n  function hasBadBidiRects(measure) {\r\n    if (badBidiRects != null) return badBidiRects;\r\n    var txt = removeChildrenAndAdd(measure, document.createTextNode(\"A\\u062eA\"));\r\n    var r0 = range(txt, 0, 1).getBoundingClientRect();\r\n    if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780)\r\n    var r1 = range(txt, 1, 2).getBoundingClientRect();\r\n    return badBidiRects = (r1.right - r0.right < 3);\r\n  }\r\n\r\n  // See if \"\".split is the broken IE version, if so, provide an\r\n  // alternative way to split lines.\r\n  var splitLinesAuto = CodeMirror.splitLines = \"\\n\\nb\".split(/\\n/).length != 3 ? function(string) {\r\n    var pos = 0, result = [], l = string.length;\r\n    while (pos <= l) {\r\n      var nl = string.indexOf(\"\\n\", pos);\r\n      if (nl == -1) nl = string.length;\r\n      var line = string.slice(pos, string.charAt(nl - 1) == \"\\r\" ? nl - 1 : nl);\r\n      var rt = line.indexOf(\"\\r\");\r\n      if (rt != -1) {\r\n        result.push(line.slice(0, rt));\r\n        pos += rt + 1;\r\n      } else {\r\n        result.push(line);\r\n        pos = nl + 1;\r\n      }\r\n    }\r\n    return result;\r\n  } : function(string){return string.split(/\\r\\n?|\\n/);};\r\n\r\n  var hasSelection = window.getSelection ? function(te) {\r\n    try { return te.selectionStart != te.selectionEnd; }\r\n    catch(e) { return false; }\r\n  } : function(te) {\r\n    try {var range = te.ownerDocument.selection.createRange();}\r\n    catch(e) {}\r\n    if (!range || range.parentElement() != te) return false;\r\n    return range.compareEndPoints(\"StartToEnd\", range) != 0;\r\n  };\r\n\r\n  var hasCopyEvent = (function() {\r\n    var e = elt(\"div\");\r\n    if (\"oncopy\" in e) return true;\r\n    e.setAttribute(\"oncopy\", \"return;\");\r\n    return typeof e.oncopy == \"function\";\r\n  })();\r\n\r\n  var badZoomedRects = null;\r\n  function hasBadZoomedRects(measure) {\r\n    if (badZoomedRects != null) return badZoomedRects;\r\n    var node = removeChildrenAndAdd(measure, elt(\"span\", \"x\"));\r\n    var normal = node.getBoundingClientRect();\r\n    var fromRange = range(node, 0, 1).getBoundingClientRect();\r\n    return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1;\r\n  }\r\n\r\n  // KEY NAMES\r\n\r\n  var keyNames = CodeMirror.keyNames = {\r\n    3: \"Enter\", 8: \"Backspace\", 9: \"Tab\", 13: \"Enter\", 16: \"Shift\", 17: \"Ctrl\", 18: \"Alt\",\r\n    19: \"Pause\", 20: \"CapsLock\", 27: \"Esc\", 32: \"Space\", 33: \"PageUp\", 34: \"PageDown\", 35: \"End\",\r\n    36: \"Home\", 37: \"Left\", 38: \"Up\", 39: \"Right\", 40: \"Down\", 44: \"PrintScrn\", 45: \"Insert\",\r\n    46: \"Delete\", 59: \";\", 61: \"=\", 91: \"Mod\", 92: \"Mod\", 93: \"Mod\",\r\n    106: \"*\", 107: \"=\", 109: \"-\", 110: \".\", 111: \"/\", 127: \"Delete\",\r\n    173: \"-\", 186: \";\", 187: \"=\", 188: \",\", 189: \"-\", 190: \".\", 191: \"/\", 192: \"`\", 219: \"[\", 220: \"\\\\\",\r\n    221: \"]\", 222: \"'\", 63232: \"Up\", 63233: \"Down\", 63234: \"Left\", 63235: \"Right\", 63272: \"Delete\",\r\n    63273: \"Home\", 63275: \"End\", 63276: \"PageUp\", 63277: \"PageDown\", 63302: \"Insert\"\r\n  };\r\n  (function() {\r\n    // Number keys\r\n    for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i);\r\n    // Alphabetic keys\r\n    for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);\r\n    // Function keys\r\n    for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = \"F\" + i;\r\n  })();\r\n\r\n  // BIDI HELPERS\r\n\r\n  function iterateBidiSections(order, from, to, f) {\r\n    if (!order) return f(from, to, \"ltr\");\r\n    var found = false;\r\n    for (var i = 0; i < order.length; ++i) {\r\n      var part = order[i];\r\n      if (part.from < to && part.to > from || from == to && part.to == from) {\r\n        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? \"rtl\" : \"ltr\");\r\n        found = true;\r\n      }\r\n    }\r\n    if (!found) f(from, to, \"ltr\");\r\n  }\r\n\r\n  function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }\r\n  function bidiRight(part) { return part.level % 2 ? part.from : part.to; }\r\n\r\n  function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }\r\n  function lineRight(line) {\r\n    var order = getOrder(line);\r\n    if (!order) return line.text.length;\r\n    return bidiRight(lst(order));\r\n  }\r\n\r\n  function lineStart(cm, lineN) {\r\n    var line = getLine(cm.doc, lineN);\r\n    var visual = visualLine(line);\r\n    if (visual != line) lineN = lineNo(visual);\r\n    var order = getOrder(visual);\r\n    var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);\r\n    return Pos(lineN, ch);\r\n  }\r\n  function lineEnd(cm, lineN) {\r\n    var merged, line = getLine(cm.doc, lineN);\r\n    while (merged = collapsedSpanAtEnd(line)) {\r\n      line = merged.find(1, true).line;\r\n      lineN = null;\r\n    }\r\n    var order = getOrder(line);\r\n    var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);\r\n    return Pos(lineN == null ? lineNo(line) : lineN, ch);\r\n  }\r\n  function lineStartSmart(cm, pos) {\r\n    var start = lineStart(cm, pos.line);\r\n    var line = getLine(cm.doc, start.line);\r\n    var order = getOrder(line);\r\n    if (!order || order[0].level == 0) {\r\n      var firstNonWS = Math.max(0, line.text.search(/\\S/));\r\n      var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;\r\n      return Pos(start.line, inWS ? 0 : firstNonWS);\r\n    }\r\n    return start;\r\n  }\r\n\r\n  function compareBidiLevel(order, a, b) {\r\n    var linedir = order[0].level;\r\n    if (a == linedir) return true;\r\n    if (b == linedir) return false;\r\n    return a < b;\r\n  }\r\n  var bidiOther;\r\n  function getBidiPartAt(order, pos) {\r\n    bidiOther = null;\r\n    for (var i = 0, found; i < order.length; ++i) {\r\n      var cur = order[i];\r\n      if (cur.from < pos && cur.to > pos) return i;\r\n      if ((cur.from == pos || cur.to == pos)) {\r\n        if (found == null) {\r\n          found = i;\r\n        } else if (compareBidiLevel(order, cur.level, order[found].level)) {\r\n          if (cur.from != cur.to) bidiOther = found;\r\n          return i;\r\n        } else {\r\n          if (cur.from != cur.to) bidiOther = i;\r\n          return found;\r\n        }\r\n      }\r\n    }\r\n    return found;\r\n  }\r\n\r\n  function moveInLine(line, pos, dir, byUnit) {\r\n    if (!byUnit) return pos + dir;\r\n    do pos += dir;\r\n    while (pos > 0 && isExtendingChar(line.text.charAt(pos)));\r\n    return pos;\r\n  }\r\n\r\n  // This is needed in order to move 'visually' through bi-directional\r\n  // text -- i.e., pressing left should make the cursor go left, even\r\n  // when in RTL text. The tricky part is the 'jumps', where RTL and\r\n  // LTR text touch each other. This often requires the cursor offset\r\n  // to move more than one unit, in order to visually move one unit.\r\n  function moveVisually(line, start, dir, byUnit) {\r\n    var bidi = getOrder(line);\r\n    if (!bidi) return moveLogically(line, start, dir, byUnit);\r\n    var pos = getBidiPartAt(bidi, start), part = bidi[pos];\r\n    var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);\r\n\r\n    for (;;) {\r\n      if (target > part.from && target < part.to) return target;\r\n      if (target == part.from || target == part.to) {\r\n        if (getBidiPartAt(bidi, target) == pos) return target;\r\n        part = bidi[pos += dir];\r\n        return (dir > 0) == part.level % 2 ? part.to : part.from;\r\n      } else {\r\n        part = bidi[pos += dir];\r\n        if (!part) return null;\r\n        if ((dir > 0) == part.level % 2)\r\n          target = moveInLine(line, part.to, -1, byUnit);\r\n        else\r\n          target = moveInLine(line, part.from, 1, byUnit);\r\n      }\r\n    }\r\n  }\r\n\r\n  function moveLogically(line, start, dir, byUnit) {\r\n    var target = start + dir;\r\n    if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir;\r\n    return target < 0 || target > line.text.length ? null : target;\r\n  }\r\n\r\n  // Bidirectional ordering algorithm\r\n  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm\r\n  // that this (partially) implements.\r\n\r\n  // One-char codes used for character types:\r\n  // L (L):   Left-to-Right\r\n  // R (R):   Right-to-Left\r\n  // r (AL):  Right-to-Left Arabic\r\n  // 1 (EN):  European Number\r\n  // + (ES):  European Number Separator\r\n  // % (ET):  European Number Terminator\r\n  // n (AN):  Arabic Number\r\n  // , (CS):  Common Number Separator\r\n  // m (NSM): Non-Spacing Mark\r\n  // b (BN):  Boundary Neutral\r\n  // s (B):   Paragraph Separator\r\n  // t (S):   Segment Separator\r\n  // w (WS):  Whitespace\r\n  // N (ON):  Other Neutrals\r\n\r\n  // Returns null if characters are ordered as they appear\r\n  // (left-to-right), or an array of sections ({from, to, level}\r\n  // objects) in the order in which they occur visually.\r\n  var bidiOrdering = (function() {\r\n    // Character types for codepoints 0 to 0xff\r\n    var lowTypes = \"bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN\";\r\n    // Character types for codepoints 0x600 to 0x6ff\r\n    var arabicTypes = \"rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm\";\r\n    function charType(code) {\r\n      if (code <= 0xf7) return lowTypes.charAt(code);\r\n      else if (0x590 <= code && code <= 0x5f4) return \"R\";\r\n      else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600);\r\n      else if (0x6ee <= code && code <= 0x8ac) return \"r\";\r\n      else if (0x2000 <= code && code <= 0x200b) return \"w\";\r\n      else if (code == 0x200c) return \"b\";\r\n      else return \"L\";\r\n    }\r\n\r\n    var bidiRE = /[\\u0590-\\u05f4\\u0600-\\u06ff\\u0700-\\u08ac]/;\r\n    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;\r\n    // Browsers seem to always treat the boundaries of block elements as being L.\r\n    var outerType = \"L\";\r\n\r\n    function BidiSpan(level, from, to) {\r\n      this.level = level;\r\n      this.from = from; this.to = to;\r\n    }\r\n\r\n    return function(str) {\r\n      if (!bidiRE.test(str)) return false;\r\n      var len = str.length, types = [];\r\n      for (var i = 0, type; i < len; ++i)\r\n        types.push(type = charType(str.charCodeAt(i)));\r\n\r\n      // W1. Examine each non-spacing mark (NSM) in the level run, and\r\n      // change the type of the NSM to the type of the previous\r\n      // character. If the NSM is at the start of the level run, it will\r\n      // get the type of sor.\r\n      for (var i = 0, prev = outerType; i < len; ++i) {\r\n        var type = types[i];\r\n        if (type == \"m\") types[i] = prev;\r\n        else prev = type;\r\n      }\r\n\r\n      // W2. Search backwards from each instance of a European number\r\n      // until the first strong type (R, L, AL, or sor) is found. If an\r\n      // AL is found, change the type of the European number to Arabic\r\n      // number.\r\n      // W3. Change all ALs to R.\r\n      for (var i = 0, cur = outerType; i < len; ++i) {\r\n        var type = types[i];\r\n        if (type == \"1\" && cur == \"r\") types[i] = \"n\";\r\n        else if (isStrong.test(type)) { cur = type; if (type == \"r\") types[i] = \"R\"; }\r\n      }\r\n\r\n      // W4. A single European separator between two European numbers\r\n      // changes to a European number. A single common separator between\r\n      // two numbers of the same type changes to that type.\r\n      for (var i = 1, prev = types[0]; i < len - 1; ++i) {\r\n        var type = types[i];\r\n        if (type == \"+\" && prev == \"1\" && types[i+1] == \"1\") types[i] = \"1\";\r\n        else if (type == \",\" && prev == types[i+1] &&\r\n                 (prev == \"1\" || prev == \"n\")) types[i] = prev;\r\n        prev = type;\r\n      }\r\n\r\n      // W5. A sequence of European terminators adjacent to European\r\n      // numbers changes to all European numbers.\r\n      // W6. Otherwise, separators and terminators change to Other\r\n      // Neutral.\r\n      for (var i = 0; i < len; ++i) {\r\n        var type = types[i];\r\n        if (type == \",\") types[i] = \"N\";\r\n        else if (type == \"%\") {\r\n          for (var end = i + 1; end < len && types[end] == \"%\"; ++end) {}\r\n          var replace = (i && types[i-1] == \"!\") || (end < len && types[end] == \"1\") ? \"1\" : \"N\";\r\n          for (var j = i; j < end; ++j) types[j] = replace;\r\n          i = end - 1;\r\n        }\r\n      }\r\n\r\n      // W7. Search backwards from each instance of a European number\r\n      // until the first strong type (R, L, or sor) is found. If an L is\r\n      // found, then change the type of the European number to L.\r\n      for (var i = 0, cur = outerType; i < len; ++i) {\r\n        var type = types[i];\r\n        if (cur == \"L\" && type == \"1\") types[i] = \"L\";\r\n        else if (isStrong.test(type)) cur = type;\r\n      }\r\n\r\n      // N1. A sequence of neutrals takes the direction of the\r\n      // surrounding strong text if the text on both sides has the same\r\n      // direction. European and Arabic numbers act as if they were R in\r\n      // terms of their influence on neutrals. Start-of-level-run (sor)\r\n      // and end-of-level-run (eor) are used at level run boundaries.\r\n      // N2. Any remaining neutrals take the embedding direction.\r\n      for (var i = 0; i < len; ++i) {\r\n        if (isNeutral.test(types[i])) {\r\n          for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}\r\n          var before = (i ? types[i-1] : outerType) == \"L\";\r\n          var after = (end < len ? types[end] : outerType) == \"L\";\r\n          var replace = before || after ? \"L\" : \"R\";\r\n          for (var j = i; j < end; ++j) types[j] = replace;\r\n          i = end - 1;\r\n        }\r\n      }\r\n\r\n      // Here we depart from the documented algorithm, in order to avoid\r\n      // building up an actual levels array. Since there are only three\r\n      // levels (0, 1, 2) in an implementation that doesn't take\r\n      // explicit embedding into account, we can build up the order on\r\n      // the fly, without following the level-based algorithm.\r\n      var order = [], m;\r\n      for (var i = 0; i < len;) {\r\n        if (countsAsLeft.test(types[i])) {\r\n          var start = i;\r\n          for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}\r\n          order.push(new BidiSpan(0, start, i));\r\n        } else {\r\n          var pos = i, at = order.length;\r\n          for (++i; i < len && types[i] != \"L\"; ++i) {}\r\n          for (var j = pos; j < i;) {\r\n            if (countsAsNum.test(types[j])) {\r\n              if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j));\r\n              var nstart = j;\r\n              for (++j; j < i && countsAsNum.test(types[j]); ++j) {}\r\n              order.splice(at, 0, new BidiSpan(2, nstart, j));\r\n              pos = j;\r\n            } else ++j;\r\n          }\r\n          if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i));\r\n        }\r\n      }\r\n      if (order[0].level == 1 && (m = str.match(/^\\s+/))) {\r\n        order[0].from = m[0].length;\r\n        order.unshift(new BidiSpan(0, 0, m[0].length));\r\n      }\r\n      if (lst(order).level == 1 && (m = str.match(/\\s+$/))) {\r\n        lst(order).to -= m[0].length;\r\n        order.push(new BidiSpan(0, len - m[0].length, len));\r\n      }\r\n      if (order[0].level == 2)\r\n        order.unshift(new BidiSpan(1, order[0].to, order[0].to));\r\n      if (order[0].level != lst(order).level)\r\n        order.push(new BidiSpan(order[0].level, len, len));\r\n\r\n      return order;\r\n    };\r\n  })();\r\n\r\n  // THE END\r\n\r\n  CodeMirror.version = \"5.9.1\";\r\n\r\n  return CodeMirror;\r\n});\r\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\r\n// Distributed under an MIT license: http://codemirror.net/LICENSE\r\n\r\n(function(mod) {\r\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\r\n    mod(require(\"../../lib/codemirror\"), require(\"../markdown/markdown\"), require(\"../../addon/mode/overlay\"));\r\n  else if (typeof define == \"function\" && define.amd) // AMD\r\n    define([\"../../lib/codemirror\", \"../markdown/markdown\", \"../../addon/mode/overlay\"], mod);\r\n  else // Plain browser env\r\n    mod(CodeMirror);\r\n})(function(CodeMirror) {\r\n\"use strict\";\r\n\r\nvar urlRE = /^((?:(?:aaas?|about|acap|adiumxtra|af[ps]|aim|apt|attachment|aw|beshare|bitcoin|bolo|callto|cap|chrome(?:-extension)?|cid|coap|com-eventbrite-attendee|content|crid|cvs|data|dav|dict|dlna-(?:playcontainer|playsingle)|dns|doi|dtn|dvb|ed2k|facetime|feed|file|finger|fish|ftp|geo|gg|git|gizmoproject|go|gopher|gtalk|h323|hcp|https?|iax|icap|icon|im|imap|info|ipn|ipp|irc[6s]?|iris(?:\\.beep|\\.lwz|\\.xpc|\\.xpcs)?|itms|jar|javascript|jms|keyparc|lastfm|ldaps?|magnet|mailto|maps|market|message|mid|mms|ms-help|msnim|msrps?|mtqp|mumble|mupdate|mvn|news|nfs|nih?|nntp|notes|oid|opaquelocktoken|palm|paparazzi|platform|pop|pres|proxy|psyc|query|res(?:ource)?|rmi|rsync|rtmp|rtsp|secondlife|service|session|sftp|sgn|shttp|sieve|sips?|skype|sm[bs]|snmp|soap\\.beeps?|soldat|spotify|ssh|steam|svn|tag|teamspeak|tel(?:net)?|tftp|things|thismessage|tip|tn3270|tv|udp|unreal|urn|ut2004|vemmi|ventrilo|view-source|webcal|wss?|wtai|wyciwyg|xcon(?:-userid)?|xfire|xmlrpc\\.beeps?|xmpp|xri|ymsgr|z39\\.50[rs]?):(?:\\/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}\\/)(?:[^\\s()<>]|\\([^\\s()<>]*\\))+(?:\\([^\\s()<>]*\\)|[^\\s`*!()\\[\\]{};:'\".,<>?«»“”‘’]))/i\r\n\r\nCodeMirror.defineMode(\"gfm\", function(config, modeConfig) {\r\n  var codeDepth = 0;\r\n  function blankLine(state) {\r\n    state.code = false;\r\n    return null;\r\n  }\r\n  var gfmOverlay = {\r\n    startState: function() {\r\n      return {\r\n        code: false,\r\n        codeBlock: false,\r\n        ateSpace: false\r\n      };\r\n    },\r\n    copyState: function(s) {\r\n      return {\r\n        code: s.code,\r\n        codeBlock: s.codeBlock,\r\n        ateSpace: s.ateSpace\r\n      };\r\n    },\r\n    token: function(stream, state) {\r\n      state.combineTokens = null;\r\n\r\n      // Hack to prevent formatting override inside code blocks (block and inline)\r\n      if (state.codeBlock) {\r\n        if (stream.match(/^```+/)) {\r\n          state.codeBlock = false;\r\n          return null;\r\n        }\r\n        stream.skipToEnd();\r\n        return null;\r\n      }\r\n      if (stream.sol()) {\r\n        state.code = false;\r\n      }\r\n      if (stream.sol() && stream.match(/^```+/)) {\r\n        stream.skipToEnd();\r\n        state.codeBlock = true;\r\n        return null;\r\n      }\r\n      // If this block is changed, it may need to be updated in Markdown mode\r\n      if (stream.peek() === '`') {\r\n        stream.next();\r\n        var before = stream.pos;\r\n        stream.eatWhile('`');\r\n        var difference = 1 + stream.pos - before;\r\n        if (!state.code) {\r\n          codeDepth = difference;\r\n          state.code = true;\r\n        } else {\r\n          if (difference === codeDepth) { // Must be exact\r\n            state.code = false;\r\n          }\r\n        }\r\n        return null;\r\n      } else if (state.code) {\r\n        stream.next();\r\n        return null;\r\n      }\r\n      // Check if space. If so, links can be formatted later on\r\n      if (stream.eatSpace()) {\r\n        state.ateSpace = true;\r\n        return null;\r\n      }\r\n      if (stream.sol() || state.ateSpace) {\r\n        state.ateSpace = false;\r\n        if (modeConfig.gitHubSpice !== false) {\r\n          if(stream.match(/^(?:[a-zA-Z0-9\\-_]+\\/)?(?:[a-zA-Z0-9\\-_]+@)?(?:[a-f0-9]{7,40}\\b)/)) {\r\n            // User/Project@SHA\r\n            // User@SHA\r\n            // SHA\r\n            state.combineTokens = true;\r\n            return \"link\";\r\n          } else if (stream.match(/^(?:[a-zA-Z0-9\\-_]+\\/)?(?:[a-zA-Z0-9\\-_]+)?#[0-9]+\\b/)) {\r\n            // User/Project#Num\r\n            // User#Num\r\n            // #Num\r\n            state.combineTokens = true;\r\n            return \"link\";\r\n          }\r\n        }\r\n      }\r\n      if (stream.match(urlRE) &&\r\n          stream.string.slice(stream.start - 2, stream.start) != \"](\" &&\r\n          (stream.start == 0 || /\\W/.test(stream.string.charAt(stream.start - 1)))) {\r\n        // URLs\r\n        // Taken from http://daringfireball.net/2010/07/improved_regex_for_matching_urls\r\n        // And then (issue #1160) simplified to make it not crash the Chrome Regexp engine\r\n        // And then limited url schemes to the CommonMark list, so foo:bar isn't matched as a URL\r\n        state.combineTokens = true;\r\n        return \"link\";\r\n      }\r\n      stream.next();\r\n      return null;\r\n    },\r\n    blankLine: blankLine\r\n  };\r\n\r\n  var markdownConfig = {\r\n    underscoresBreakWords: false,\r\n    taskLists: true,\r\n    fencedCodeBlocks: '```',\r\n    strikethrough: true\r\n  };\r\n  for (var attr in modeConfig) {\r\n    markdownConfig[attr] = modeConfig[attr];\r\n  }\r\n  markdownConfig.name = \"markdown\";\r\n  return CodeMirror.overlayMode(CodeMirror.getMode(config, markdownConfig), gfmOverlay);\r\n\r\n}, \"markdown\");\r\n\r\n  CodeMirror.defineMIME(\"text/x-gfm\", \"gfm\");\r\n});\r\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\r\n// Distributed under an MIT license: http://codemirror.net/LICENSE\r\n\r\n(function(mod) {\r\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\r\n    mod(require(\"../../lib/codemirror\"), require(\"../xml/xml\"), require(\"../meta\"));\r\n  else if (typeof define == \"function\" && define.amd) // AMD\r\n    define([\"../../lib/codemirror\", \"../xml/xml\", \"../meta\"], mod);\r\n  else // Plain browser env\r\n    mod(CodeMirror);\r\n})(function(CodeMirror) {\r\n\"use strict\";\r\n\r\nCodeMirror.defineMode(\"markdown\", function(cmCfg, modeCfg) {\r\n\r\n  var htmlFound = CodeMirror.modes.hasOwnProperty(\"xml\");\r\n  var htmlMode = CodeMirror.getMode(cmCfg, htmlFound ? {name: \"xml\", htmlMode: true} : \"text/plain\");\r\n\r\n  function getMode(name) {\r\n    if (CodeMirror.findModeByName) {\r\n      var found = CodeMirror.findModeByName(name);\r\n      if (found) name = found.mime || found.mimes[0];\r\n    }\r\n    var mode = CodeMirror.getMode(cmCfg, name);\r\n    return mode.name == \"null\" ? null : mode;\r\n  }\r\n\r\n  // Should characters that affect highlighting be highlighted separate?\r\n  // Does not include characters that will be output (such as `1.` and `-` for lists)\r\n  if (modeCfg.highlightFormatting === undefined)\r\n    modeCfg.highlightFormatting = false;\r\n\r\n  // Maximum number of nested blockquotes. Set to 0 for infinite nesting.\r\n  // Excess `>` will emit `error` token.\r\n  if (modeCfg.maxBlockquoteDepth === undefined)\r\n    modeCfg.maxBlockquoteDepth = 0;\r\n\r\n  // Should underscores in words open/close em/strong?\r\n  if (modeCfg.underscoresBreakWords === undefined)\r\n    modeCfg.underscoresBreakWords = true;\r\n\r\n  // Use `fencedCodeBlocks` to configure fenced code blocks. false to\r\n  // disable, string to specify a precise regexp that the fence should\r\n  // match, and true to allow three or more backticks or tildes (as\r\n  // per CommonMark).\r\n\r\n  // Turn on task lists? (\"- [ ] \" and \"- [x] \")\r\n  if (modeCfg.taskLists === undefined) modeCfg.taskLists = false;\r\n\r\n  // Turn on strikethrough syntax\r\n  if (modeCfg.strikethrough === undefined)\r\n    modeCfg.strikethrough = false;\r\n\r\n  // Allow token types to be overridden by user-provided token types.\r\n  if (modeCfg.tokenTypeOverrides === undefined)\r\n    modeCfg.tokenTypeOverrides = {};\r\n\r\n  var codeDepth = 0;\r\n\r\n  var tokenTypes = {\r\n    header: \"header\",\r\n    code: \"comment\",\r\n    quote: \"quote\",\r\n    list1: \"variable-2\",\r\n    list2: \"variable-3\",\r\n    list3: \"keyword\",\r\n    hr: \"hr\",\r\n    image: \"tag\",\r\n    formatting: \"formatting\",\r\n    linkInline: \"link\",\r\n    linkEmail: \"link\",\r\n    linkText: \"link\",\r\n    linkHref: \"string\",\r\n    em: \"em\",\r\n    strong: \"strong\",\r\n    strikethrough: \"strikethrough\"\r\n  };\r\n\r\n  for (var tokenType in tokenTypes) {\r\n    if (tokenTypes.hasOwnProperty(tokenType) && modeCfg.tokenTypeOverrides[tokenType]) {\r\n      tokenTypes[tokenType] = modeCfg.tokenTypeOverrides[tokenType];\r\n    }\r\n  }\r\n\r\n  var hrRE = /^([*\\-_])(?:\\s*\\1){2,}\\s*$/\r\n  ,   ulRE = /^[*\\-+]\\s+/\r\n  ,   olRE = /^[0-9]+([.)])\\s+/\r\n  ,   taskListRE = /^\\[(x| )\\](?=\\s)/ // Must follow ulRE or olRE\r\n  ,   atxHeaderRE = modeCfg.allowAtxHeaderWithoutSpace ? /^(#+)/ : /^(#+)(?: |$)/\r\n  ,   setextHeaderRE = /^ *(?:\\={1,}|-{1,})\\s*$/\r\n  ,   textRE = /^[^#!\\[\\]*_\\\\<>` \"'(~]+/\r\n  ,   fencedCodeRE = new RegExp(\"^(\" + (modeCfg.fencedCodeBlocks === true ? \"~~~+|```+\" : modeCfg.fencedCodeBlocks) +\r\n                                \")[ \\\\t]*([\\\\w+#]*)\");\r\n\r\n  function switchInline(stream, state, f) {\r\n    state.f = state.inline = f;\r\n    return f(stream, state);\r\n  }\r\n\r\n  function switchBlock(stream, state, f) {\r\n    state.f = state.block = f;\r\n    return f(stream, state);\r\n  }\r\n\r\n  function lineIsEmpty(line) {\r\n    return !line || !/\\S/.test(line.string)\r\n  }\r\n\r\n  // Blocks\r\n\r\n  function blankLine(state) {\r\n    // Reset linkTitle state\r\n    state.linkTitle = false;\r\n    // Reset EM state\r\n    state.em = false;\r\n    // Reset STRONG state\r\n    state.strong = false;\r\n    // Reset strikethrough state\r\n    state.strikethrough = false;\r\n    // Reset state.quote\r\n    state.quote = 0;\r\n    // Reset state.indentedCode\r\n    state.indentedCode = false;\r\n    if (!htmlFound && state.f == htmlBlock) {\r\n      state.f = inlineNormal;\r\n      state.block = blockNormal;\r\n    }\r\n    // Reset state.trailingSpace\r\n    state.trailingSpace = 0;\r\n    state.trailingSpaceNewLine = false;\r\n    // Mark this line as blank\r\n    state.prevLine = state.thisLine\r\n    state.thisLine = null\r\n    return null;\r\n  }\r\n\r\n  function blockNormal(stream, state) {\r\n\r\n    var sol = stream.sol();\r\n\r\n    var prevLineIsList = state.list !== false,\r\n        prevLineIsIndentedCode = state.indentedCode;\r\n\r\n    state.indentedCode = false;\r\n\r\n    if (prevLineIsList) {\r\n      if (state.indentationDiff >= 0) { // Continued list\r\n        if (state.indentationDiff < 4) { // Only adjust indentation if *not* a code block\r\n          state.indentation -= state.indentationDiff;\r\n        }\r\n        state.list = null;\r\n      } else if (state.indentation > 0) {\r\n        state.list = null;\r\n        state.listDepth = Math.floor(state.indentation / 4);\r\n      } else { // No longer a list\r\n        state.list = false;\r\n        state.listDepth = 0;\r\n      }\r\n    }\r\n\r\n    var match = null;\r\n    if (state.indentationDiff >= 4) {\r\n      stream.skipToEnd();\r\n      if (prevLineIsIndentedCode || lineIsEmpty(state.prevLine)) {\r\n        state.indentation -= 4;\r\n        state.indentedCode = true;\r\n        return tokenTypes.code;\r\n      } else {\r\n        return null;\r\n      }\r\n    } else if (stream.eatSpace()) {\r\n      return null;\r\n    } else if ((match = stream.match(atxHeaderRE)) && match[1].length <= 6) {\r\n      state.header = match[1].length;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"header\";\r\n      state.f = state.inline;\r\n      return getType(state);\r\n    } else if (!lineIsEmpty(state.prevLine) && !state.quote && !prevLineIsList &&\r\n               !prevLineIsIndentedCode && (match = stream.match(setextHeaderRE))) {\r\n      state.header = match[0].charAt(0) == '=' ? 1 : 2;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"header\";\r\n      state.f = state.inline;\r\n      return getType(state);\r\n    } else if (stream.eat('>')) {\r\n      state.quote = sol ? 1 : state.quote + 1;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"quote\";\r\n      stream.eatSpace();\r\n      return getType(state);\r\n    } else if (stream.peek() === '[') {\r\n      return switchInline(stream, state, footnoteLink);\r\n    } else if (stream.match(hrRE, true)) {\r\n      state.hr = true;\r\n      return tokenTypes.hr;\r\n    } else if ((lineIsEmpty(state.prevLine) || prevLineIsList) && (stream.match(ulRE, false) || stream.match(olRE, false))) {\r\n      var listType = null;\r\n      if (stream.match(ulRE, true)) {\r\n        listType = 'ul';\r\n      } else {\r\n        stream.match(olRE, true);\r\n        listType = 'ol';\r\n      }\r\n      state.indentation = stream.column() + stream.current().length;\r\n      state.list = true;\r\n      state.listDepth++;\r\n      if (modeCfg.taskLists && stream.match(taskListRE, false)) {\r\n        state.taskList = true;\r\n      }\r\n      state.f = state.inline;\r\n      if (modeCfg.highlightFormatting) state.formatting = [\"list\", \"list-\" + listType];\r\n      return getType(state);\r\n    } else if (modeCfg.fencedCodeBlocks && (match = stream.match(fencedCodeRE, true))) {\r\n      state.fencedChars = match[1]\r\n      // try switching mode\r\n      state.localMode = getMode(match[2]);\r\n      if (state.localMode) state.localState = state.localMode.startState();\r\n      state.f = state.block = local;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"code-block\";\r\n      state.code = true;\r\n      return getType(state);\r\n    }\r\n\r\n    return switchInline(stream, state, state.inline);\r\n  }\r\n\r\n  function htmlBlock(stream, state) {\r\n    var style = htmlMode.token(stream, state.htmlState);\r\n    if ((htmlFound && state.htmlState.tagStart === null &&\r\n         (!state.htmlState.context && state.htmlState.tokenize.isInText)) ||\r\n        (state.md_inside && stream.current().indexOf(\">\") > -1)) {\r\n      state.f = inlineNormal;\r\n      state.block = blockNormal;\r\n      state.htmlState = null;\r\n    }\r\n    return style;\r\n  }\r\n\r\n  function local(stream, state) {\r\n    if (stream.sol() && state.fencedChars && stream.match(state.fencedChars, false)) {\r\n      state.localMode = state.localState = null;\r\n      state.f = state.block = leavingLocal;\r\n      return null;\r\n    } else if (state.localMode) {\r\n      return state.localMode.token(stream, state.localState);\r\n    } else {\r\n      stream.skipToEnd();\r\n      return tokenTypes.code;\r\n    }\r\n  }\r\n\r\n  function leavingLocal(stream, state) {\r\n    stream.match(state.fencedChars);\r\n    state.block = blockNormal;\r\n    state.f = inlineNormal;\r\n    state.fencedChars = null;\r\n    if (modeCfg.highlightFormatting) state.formatting = \"code-block\";\r\n    state.code = true;\r\n    var returnType = getType(state);\r\n    state.code = false;\r\n    return returnType;\r\n  }\r\n\r\n  // Inline\r\n  function getType(state) {\r\n    var styles = [];\r\n\r\n    if (state.formatting) {\r\n      styles.push(tokenTypes.formatting);\r\n\r\n      if (typeof state.formatting === \"string\") state.formatting = [state.formatting];\r\n\r\n      for (var i = 0; i < state.formatting.length; i++) {\r\n        styles.push(tokenTypes.formatting + \"-\" + state.formatting[i]);\r\n\r\n        if (state.formatting[i] === \"header\") {\r\n          styles.push(tokenTypes.formatting + \"-\" + state.formatting[i] + \"-\" + state.header);\r\n        }\r\n\r\n        // Add `formatting-quote` and `formatting-quote-#` for blockquotes\r\n        // Add `error` instead if the maximum blockquote nesting depth is passed\r\n        if (state.formatting[i] === \"quote\") {\r\n          if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {\r\n            styles.push(tokenTypes.formatting + \"-\" + state.formatting[i] + \"-\" + state.quote);\r\n          } else {\r\n            styles.push(\"error\");\r\n          }\r\n        }\r\n      }\r\n    }\r\n\r\n    if (state.taskOpen) {\r\n      styles.push(\"meta\");\r\n      return styles.length ? styles.join(' ') : null;\r\n    }\r\n    if (state.taskClosed) {\r\n      styles.push(\"property\");\r\n      return styles.length ? styles.join(' ') : null;\r\n    }\r\n\r\n    if (state.linkHref) {\r\n      styles.push(tokenTypes.linkHref, \"url\");\r\n    } else { // Only apply inline styles to non-url text\r\n      if (state.strong) { styles.push(tokenTypes.strong); }\r\n      if (state.em) { styles.push(tokenTypes.em); }\r\n      if (state.strikethrough) { styles.push(tokenTypes.strikethrough); }\r\n      if (state.linkText) { styles.push(tokenTypes.linkText); }\r\n      if (state.code) { styles.push(tokenTypes.code); }\r\n    }\r\n\r\n    if (state.header) { styles.push(tokenTypes.header, tokenTypes.header + \"-\" + state.header); }\r\n\r\n    if (state.quote) {\r\n      styles.push(tokenTypes.quote);\r\n\r\n      // Add `quote-#` where the maximum for `#` is modeCfg.maxBlockquoteDepth\r\n      if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {\r\n        styles.push(tokenTypes.quote + \"-\" + state.quote);\r\n      } else {\r\n        styles.push(tokenTypes.quote + \"-\" + modeCfg.maxBlockquoteDepth);\r\n      }\r\n    }\r\n\r\n    if (state.list !== false) {\r\n      var listMod = (state.listDepth - 1) % 3;\r\n      if (!listMod) {\r\n        styles.push(tokenTypes.list1);\r\n      } else if (listMod === 1) {\r\n        styles.push(tokenTypes.list2);\r\n      } else {\r\n        styles.push(tokenTypes.list3);\r\n      }\r\n    }\r\n\r\n    if (state.trailingSpaceNewLine) {\r\n      styles.push(\"trailing-space-new-line\");\r\n    } else if (state.trailingSpace) {\r\n      styles.push(\"trailing-space-\" + (state.trailingSpace % 2 ? \"a\" : \"b\"));\r\n    }\r\n\r\n    return styles.length ? styles.join(' ') : null;\r\n  }\r\n\r\n  function handleText(stream, state) {\r\n    if (stream.match(textRE, true)) {\r\n      return getType(state);\r\n    }\r\n    return undefined;\r\n  }\r\n\r\n  function inlineNormal(stream, state) {\r\n    var style = state.text(stream, state);\r\n    if (typeof style !== 'undefined')\r\n      return style;\r\n\r\n    if (state.list) { // List marker (*, +, -, 1., etc)\r\n      state.list = null;\r\n      return getType(state);\r\n    }\r\n\r\n    if (state.taskList) {\r\n      var taskOpen = stream.match(taskListRE, true)[1] !== \"x\";\r\n      if (taskOpen) state.taskOpen = true;\r\n      else state.taskClosed = true;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"task\";\r\n      state.taskList = false;\r\n      return getType(state);\r\n    }\r\n\r\n    state.taskOpen = false;\r\n    state.taskClosed = false;\r\n\r\n    if (state.header && stream.match(/^#+$/, true)) {\r\n      if (modeCfg.highlightFormatting) state.formatting = \"header\";\r\n      return getType(state);\r\n    }\r\n\r\n    // Get sol() value now, before character is consumed\r\n    var sol = stream.sol();\r\n\r\n    var ch = stream.next();\r\n\r\n    if (ch === '\\\\') {\r\n      stream.next();\r\n      if (modeCfg.highlightFormatting) {\r\n        var type = getType(state);\r\n        var formattingEscape = tokenTypes.formatting + \"-escape\";\r\n        return type ? type + \" \" + formattingEscape : formattingEscape;\r\n      }\r\n    }\r\n\r\n    // Matches link titles present on next line\r\n    if (state.linkTitle) {\r\n      state.linkTitle = false;\r\n      var matchCh = ch;\r\n      if (ch === '(') {\r\n        matchCh = ')';\r\n      }\r\n      matchCh = (matchCh+'').replace(/([.?*+^$[\\]\\\\(){}|-])/g, \"\\\\$1\");\r\n      var regex = '^\\\\s*(?:[^' + matchCh + '\\\\\\\\]+|\\\\\\\\\\\\\\\\|\\\\\\\\.)' + matchCh;\r\n      if (stream.match(new RegExp(regex), true)) {\r\n        return tokenTypes.linkHref;\r\n      }\r\n    }\r\n\r\n    // If this block is changed, it may need to be updated in GFM mode\r\n    if (ch === '`') {\r\n      var previousFormatting = state.formatting;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"code\";\r\n      var t = getType(state);\r\n      var before = stream.pos;\r\n      stream.eatWhile('`');\r\n      var difference = 1 + stream.pos - before;\r\n      if (!state.code) {\r\n        codeDepth = difference;\r\n        state.code = true;\r\n        return getType(state);\r\n      } else {\r\n        if (difference === codeDepth) { // Must be exact\r\n          state.code = false;\r\n          return t;\r\n        }\r\n        state.formatting = previousFormatting;\r\n        return getType(state);\r\n      }\r\n    } else if (state.code) {\r\n      return getType(state);\r\n    }\r\n\r\n    if (ch === '!' && stream.match(/\\[[^\\]]*\\] ?(?:\\(|\\[)/, false)) {\r\n      stream.match(/\\[[^\\]]*\\]/);\r\n      state.inline = state.f = linkHref;\r\n      return tokenTypes.image;\r\n    }\r\n\r\n    if (ch === '[' && stream.match(/.*\\](\\(.*\\)| ?\\[.*\\])/, false)) {\r\n      state.linkText = true;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"link\";\r\n      return getType(state);\r\n    }\r\n\r\n    if (ch === ']' && state.linkText && stream.match(/\\(.*\\)| ?\\[.*\\]/, false)) {\r\n      if (modeCfg.highlightFormatting) state.formatting = \"link\";\r\n      var type = getType(state);\r\n      state.linkText = false;\r\n      state.inline = state.f = linkHref;\r\n      return type;\r\n    }\r\n\r\n    if (ch === '<' && stream.match(/^(https?|ftps?):\\/\\/(?:[^\\\\>]|\\\\.)+>/, false)) {\r\n      state.f = state.inline = linkInline;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"link\";\r\n      var type = getType(state);\r\n      if (type){\r\n        type += \" \";\r\n      } else {\r\n        type = \"\";\r\n      }\r\n      return type + tokenTypes.linkInline;\r\n    }\r\n\r\n    if (ch === '<' && stream.match(/^[^> \\\\]+@(?:[^\\\\>]|\\\\.)+>/, false)) {\r\n      state.f = state.inline = linkInline;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"link\";\r\n      var type = getType(state);\r\n      if (type){\r\n        type += \" \";\r\n      } else {\r\n        type = \"\";\r\n      }\r\n      return type + tokenTypes.linkEmail;\r\n    }\r\n\r\n    if (ch === '<' && stream.match(/^(!--|\\w)/, false)) {\r\n      var end = stream.string.indexOf(\">\", stream.pos);\r\n      if (end != -1) {\r\n        var atts = stream.string.substring(stream.start, end);\r\n        if (/markdown\\s*=\\s*('|\"){0,1}1('|\"){0,1}/.test(atts)) state.md_inside = true;\r\n      }\r\n      stream.backUp(1);\r\n      state.htmlState = CodeMirror.startState(htmlMode);\r\n      return switchBlock(stream, state, htmlBlock);\r\n    }\r\n\r\n    if (ch === '<' && stream.match(/^\\/\\w*?>/)) {\r\n      state.md_inside = false;\r\n      return \"tag\";\r\n    }\r\n\r\n    var ignoreUnderscore = false;\r\n    if (!modeCfg.underscoresBreakWords) {\r\n      if (ch === '_' && stream.peek() !== '_' && stream.match(/(\\w)/, false)) {\r\n        var prevPos = stream.pos - 2;\r\n        if (prevPos >= 0) {\r\n          var prevCh = stream.string.charAt(prevPos);\r\n          if (prevCh !== '_' && prevCh.match(/(\\w)/, false)) {\r\n            ignoreUnderscore = true;\r\n          }\r\n        }\r\n      }\r\n    }\r\n    if (ch === '*' || (ch === '_' && !ignoreUnderscore)) {\r\n      if (sol && stream.peek() === ' ') {\r\n        // Do nothing, surrounded by newline and space\r\n      } else if (state.strong === ch && stream.eat(ch)) { // Remove STRONG\r\n        if (modeCfg.highlightFormatting) state.formatting = \"strong\";\r\n        var t = getType(state);\r\n        state.strong = false;\r\n        return t;\r\n      } else if (!state.strong && stream.eat(ch)) { // Add STRONG\r\n        state.strong = ch;\r\n        if (modeCfg.highlightFormatting) state.formatting = \"strong\";\r\n        return getType(state);\r\n      } else if (state.em === ch) { // Remove EM\r\n        if (modeCfg.highlightFormatting) state.formatting = \"em\";\r\n        var t = getType(state);\r\n        state.em = false;\r\n        return t;\r\n      } else if (!state.em) { // Add EM\r\n        state.em = ch;\r\n        if (modeCfg.highlightFormatting) state.formatting = \"em\";\r\n        return getType(state);\r\n      }\r\n    } else if (ch === ' ') {\r\n      if (stream.eat('*') || stream.eat('_')) { // Probably surrounded by spaces\r\n        if (stream.peek() === ' ') { // Surrounded by spaces, ignore\r\n          return getType(state);\r\n        } else { // Not surrounded by spaces, back up pointer\r\n          stream.backUp(1);\r\n        }\r\n      }\r\n    }\r\n\r\n    if (modeCfg.strikethrough) {\r\n      if (ch === '~' && stream.eatWhile(ch)) {\r\n        if (state.strikethrough) {// Remove strikethrough\r\n          if (modeCfg.highlightFormatting) state.formatting = \"strikethrough\";\r\n          var t = getType(state);\r\n          state.strikethrough = false;\r\n          return t;\r\n        } else if (stream.match(/^[^\\s]/, false)) {// Add strikethrough\r\n          state.strikethrough = true;\r\n          if (modeCfg.highlightFormatting) state.formatting = \"strikethrough\";\r\n          return getType(state);\r\n        }\r\n      } else if (ch === ' ') {\r\n        if (stream.match(/^~~/, true)) { // Probably surrounded by space\r\n          if (stream.peek() === ' ') { // Surrounded by spaces, ignore\r\n            return getType(state);\r\n          } else { // Not surrounded by spaces, back up pointer\r\n            stream.backUp(2);\r\n          }\r\n        }\r\n      }\r\n    }\r\n\r\n    if (ch === ' ') {\r\n      if (stream.match(/ +$/, false)) {\r\n        state.trailingSpace++;\r\n      } else if (state.trailingSpace) {\r\n        state.trailingSpaceNewLine = true;\r\n      }\r\n    }\r\n\r\n    return getType(state);\r\n  }\r\n\r\n  function linkInline(stream, state) {\r\n    var ch = stream.next();\r\n\r\n    if (ch === \">\") {\r\n      state.f = state.inline = inlineNormal;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"link\";\r\n      var type = getType(state);\r\n      if (type){\r\n        type += \" \";\r\n      } else {\r\n        type = \"\";\r\n      }\r\n      return type + tokenTypes.linkInline;\r\n    }\r\n\r\n    stream.match(/^[^>]+/, true);\r\n\r\n    return tokenTypes.linkInline;\r\n  }\r\n\r\n  function linkHref(stream, state) {\r\n    // Check if space, and return NULL if so (to avoid marking the space)\r\n    if(stream.eatSpace()){\r\n      return null;\r\n    }\r\n    var ch = stream.next();\r\n    if (ch === '(' || ch === '[') {\r\n      state.f = state.inline = getLinkHrefInside(ch === \"(\" ? \")\" : \"]\");\r\n      if (modeCfg.highlightFormatting) state.formatting = \"link-string\";\r\n      state.linkHref = true;\r\n      return getType(state);\r\n    }\r\n    return 'error';\r\n  }\r\n\r\n  function getLinkHrefInside(endChar) {\r\n    return function(stream, state) {\r\n      var ch = stream.next();\r\n\r\n      if (ch === endChar) {\r\n        state.f = state.inline = inlineNormal;\r\n        if (modeCfg.highlightFormatting) state.formatting = \"link-string\";\r\n        var returnState = getType(state);\r\n        state.linkHref = false;\r\n        return returnState;\r\n      }\r\n\r\n      if (stream.match(inlineRE(endChar), true)) {\r\n        stream.backUp(1);\r\n      }\r\n\r\n      state.linkHref = true;\r\n      return getType(state);\r\n    };\r\n  }\r\n\r\n  function footnoteLink(stream, state) {\r\n    if (stream.match(/^[^\\]]*\\]:/, false)) {\r\n      state.f = footnoteLinkInside;\r\n      stream.next(); // Consume [\r\n      if (modeCfg.highlightFormatting) state.formatting = \"link\";\r\n      state.linkText = true;\r\n      return getType(state);\r\n    }\r\n    return switchInline(stream, state, inlineNormal);\r\n  }\r\n\r\n  function footnoteLinkInside(stream, state) {\r\n    if (stream.match(/^\\]:/, true)) {\r\n      state.f = state.inline = footnoteUrl;\r\n      if (modeCfg.highlightFormatting) state.formatting = \"link\";\r\n      var returnType = getType(state);\r\n      state.linkText = false;\r\n      return returnType;\r\n    }\r\n\r\n    stream.match(/^[^\\]]+/, true);\r\n\r\n    return tokenTypes.linkText;\r\n  }\r\n\r\n  function footnoteUrl(stream, state) {\r\n    // Check if space, and return NULL if so (to avoid marking the space)\r\n    if(stream.eatSpace()){\r\n      return null;\r\n    }\r\n    // Match URL\r\n    stream.match(/^[^\\s]+/, true);\r\n    // Check for link title\r\n    if (stream.peek() === undefined) { // End of line, set flag to check next line\r\n      state.linkTitle = true;\r\n    } else { // More content on line, check if link title\r\n      stream.match(/^(?:\\s+(?:\"(?:[^\"\\\\]|\\\\\\\\|\\\\.)+\"|'(?:[^'\\\\]|\\\\\\\\|\\\\.)+'|\\((?:[^)\\\\]|\\\\\\\\|\\\\.)+\\)))?/, true);\r\n    }\r\n    state.f = state.inline = inlineNormal;\r\n    return tokenTypes.linkHref + \" url\";\r\n  }\r\n\r\n  var savedInlineRE = [];\r\n  function inlineRE(endChar) {\r\n    if (!savedInlineRE[endChar]) {\r\n      // Escape endChar for RegExp (taken from http://stackoverflow.com/a/494122/526741)\r\n      endChar = (endChar+'').replace(/([.?*+^$[\\]\\\\(){}|-])/g, \"\\\\$1\");\r\n      // Match any non-endChar, escaped character, as well as the closing\r\n      // endChar.\r\n      savedInlineRE[endChar] = new RegExp('^(?:[^\\\\\\\\]|\\\\\\\\.)*?(' + endChar + ')');\r\n    }\r\n    return savedInlineRE[endChar];\r\n  }\r\n\r\n  var mode = {\r\n    startState: function() {\r\n      return {\r\n        f: blockNormal,\r\n\r\n        prevLine: null,\r\n        thisLine: null,\r\n\r\n        block: blockNormal,\r\n        htmlState: null,\r\n        indentation: 0,\r\n\r\n        inline: inlineNormal,\r\n        text: handleText,\r\n\r\n        formatting: false,\r\n        linkText: false,\r\n        linkHref: false,\r\n        linkTitle: false,\r\n        em: false,\r\n        strong: false,\r\n        header: 0,\r\n        hr: false,\r\n        taskList: false,\r\n        list: false,\r\n        listDepth: 0,\r\n        quote: 0,\r\n        trailingSpace: 0,\r\n        trailingSpaceNewLine: false,\r\n        strikethrough: false,\r\n        fencedChars: null\r\n      };\r\n    },\r\n\r\n    copyState: function(s) {\r\n      return {\r\n        f: s.f,\r\n\r\n        prevLine: s.prevLine,\r\n        thisLine: s.thisLine,\r\n\r\n        block: s.block,\r\n        htmlState: s.htmlState && CodeMirror.copyState(htmlMode, s.htmlState),\r\n        indentation: s.indentation,\r\n\r\n        localMode: s.localMode,\r\n        localState: s.localMode ? CodeMirror.copyState(s.localMode, s.localState) : null,\r\n\r\n        inline: s.inline,\r\n        text: s.text,\r\n        formatting: false,\r\n        linkTitle: s.linkTitle,\r\n        code: s.code,\r\n        em: s.em,\r\n        strong: s.strong,\r\n        strikethrough: s.strikethrough,\r\n        header: s.header,\r\n        hr: s.hr,\r\n        taskList: s.taskList,\r\n        list: s.list,\r\n        listDepth: s.listDepth,\r\n        quote: s.quote,\r\n        indentedCode: s.indentedCode,\r\n        trailingSpace: s.trailingSpace,\r\n        trailingSpaceNewLine: s.trailingSpaceNewLine,\r\n        md_inside: s.md_inside,\r\n        fencedChars: s.fencedChars\r\n      };\r\n    },\r\n\r\n    token: function(stream, state) {\r\n\r\n      // Reset state.formatting\r\n      state.formatting = false;\r\n\r\n      if (stream != state.thisLine) {\r\n        var forceBlankLine = state.header || state.hr;\r\n\r\n        // Reset state.header and state.hr\r\n        state.header = 0;\r\n        state.hr = false;\r\n\r\n        if (stream.match(/^\\s*$/, true) || forceBlankLine) {\r\n          blankLine(state);\r\n          if (!forceBlankLine) return null\r\n          state.prevLine = null\r\n        }\r\n\r\n        state.prevLine = state.thisLine\r\n        state.thisLine = stream\r\n\r\n        // Reset state.taskList\r\n        state.taskList = false;\r\n\r\n        // Reset state.trailingSpace\r\n        state.trailingSpace = 0;\r\n        state.trailingSpaceNewLine = false;\r\n\r\n        state.f = state.block;\r\n        var indentation = stream.match(/^\\s*/, true)[0].replace(/\\t/g, '    ').length;\r\n        var difference = Math.floor((indentation - state.indentation) / 4) * 4;\r\n        if (difference > 4) difference = 4;\r\n        var adjustedIndentation = state.indentation + difference;\r\n        state.indentationDiff = adjustedIndentation - state.indentation;\r\n        state.indentation = adjustedIndentation;\r\n        if (indentation > 0) return null;\r\n      }\r\n      return state.f(stream, state);\r\n    },\r\n\r\n    innerMode: function(state) {\r\n      if (state.block == htmlBlock) return {state: state.htmlState, mode: htmlMode};\r\n      if (state.localState) return {state: state.localState, mode: state.localMode};\r\n      return {state: state, mode: mode};\r\n    },\r\n\r\n    blankLine: blankLine,\r\n\r\n    getType: getType,\r\n\r\n    fold: \"markdown\"\r\n  };\r\n  return mode;\r\n}, \"xml\");\r\n\r\nCodeMirror.defineMIME(\"text/x-markdown\", \"markdown\");\r\n\r\n});\r\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\r\n// Distributed under an MIT license: http://codemirror.net/LICENSE\r\n\r\n(function(mod) {\r\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\r\n    mod(require(\"../lib/codemirror\"));\r\n  else if (typeof define == \"function\" && define.amd) // AMD\r\n    define([\"../lib/codemirror\"], mod);\r\n  else // Plain browser env\r\n    mod(CodeMirror);\r\n})(function(CodeMirror) {\r\n  \"use strict\";\r\n\r\n  CodeMirror.modeInfo = [\r\n    {name: \"APL\", mime: \"text/apl\", mode: \"apl\", ext: [\"dyalog\", \"apl\"]},\r\n    {name: \"PGP\", mimes: [\"application/pgp\", \"application/pgp-keys\", \"application/pgp-signature\"], mode: \"asciiarmor\", ext: [\"pgp\"]},\r\n    {name: \"ASN.1\", mime: \"text/x-ttcn-asn\", mode: \"asn.1\", ext: [\"asn\", \"asn1\"]},\r\n    {name: \"Asterisk\", mime: \"text/x-asterisk\", mode: \"asterisk\", file: /^extensions\\.conf$/i},\r\n    {name: \"Brainfuck\", mime: \"text/x-brainfuck\", mode: \"brainfuck\", ext: [\"b\", \"bf\"]},\r\n    {name: \"C\", mime: \"text/x-csrc\", mode: \"clike\", ext: [\"c\", \"h\"]},\r\n    {name: \"C++\", mime: \"text/x-c++src\", mode: \"clike\", ext: [\"cpp\", \"c++\", \"cc\", \"cxx\", \"hpp\", \"h++\", \"hh\", \"hxx\"], alias: [\"cpp\"]},\r\n    {name: \"Cobol\", mime: \"text/x-cobol\", mode: \"cobol\", ext: [\"cob\", \"cpy\"]},\r\n    {name: \"C#\", mime: \"text/x-csharp\", mode: \"clike\", ext: [\"cs\"], alias: [\"csharp\"]},\r\n    {name: \"Clojure\", mime: \"text/x-clojure\", mode: \"clojure\", ext: [\"clj\"]},\r\n    {name: \"Closure Stylesheets (GSS)\", mime: \"text/x-gss\", mode: \"css\", ext: [\"gss\"]},\r\n    {name: \"CMake\", mime: \"text/x-cmake\", mode: \"cmake\", ext: [\"cmake\", \"cmake.in\"], file: /^CMakeLists.txt$/},\r\n    {name: \"CoffeeScript\", mime: \"text/x-coffeescript\", mode: \"coffeescript\", ext: [\"coffee\"], alias: [\"coffee\", \"coffee-script\"]},\r\n    {name: \"Common Lisp\", mime: \"text/x-common-lisp\", mode: \"commonlisp\", ext: [\"cl\", \"lisp\", \"el\"], alias: [\"lisp\"]},\r\n    {name: \"Cypher\", mime: \"application/x-cypher-query\", mode: \"cypher\", ext: [\"cyp\", \"cypher\"]},\r\n    {name: \"Cython\", mime: \"text/x-cython\", mode: \"python\", ext: [\"pyx\", \"pxd\", \"pxi\"]},\r\n    {name: \"CSS\", mime: \"text/css\", mode: \"css\", ext: [\"css\"]},\r\n    {name: \"CQL\", mime: \"text/x-cassandra\", mode: \"sql\", ext: [\"cql\"]},\r\n    {name: \"D\", mime: \"text/x-d\", mode: \"d\", ext: [\"d\"]},\r\n    {name: \"Dart\", mimes: [\"application/dart\", \"text/x-dart\"], mode: \"dart\", ext: [\"dart\"]},\r\n    {name: \"diff\", mime: \"text/x-diff\", mode: \"diff\", ext: [\"diff\", \"patch\"]},\r\n    {name: \"Django\", mime: \"text/x-django\", mode: \"django\"},\r\n    {name: \"Dockerfile\", mime: \"text/x-dockerfile\", mode: \"dockerfile\", file: /^Dockerfile$/},\r\n    {name: \"DTD\", mime: \"application/xml-dtd\", mode: \"dtd\", ext: [\"dtd\"]},\r\n    {name: \"Dylan\", mime: \"text/x-dylan\", mode: \"dylan\", ext: [\"dylan\", \"dyl\", \"intr\"]},\r\n    {name: \"EBNF\", mime: \"text/x-ebnf\", mode: \"ebnf\"},\r\n    {name: \"ECL\", mime: \"text/x-ecl\", mode: \"ecl\", ext: [\"ecl\"]},\r\n    {name: \"Eiffel\", mime: \"text/x-eiffel\", mode: \"eiffel\", ext: [\"e\"]},\r\n    {name: \"Elm\", mime: \"text/x-elm\", mode: \"elm\", ext: [\"elm\"]},\r\n    {name: \"Embedded Javascript\", mime: \"application/x-ejs\", mode: \"htmlembedded\", ext: [\"ejs\"]},\r\n    {name: \"Embedded Ruby\", mime: \"application/x-erb\", mode: \"htmlembedded\", ext: [\"erb\"]},\r\n    {name: \"Erlang\", mime: \"text/x-erlang\", mode: \"erlang\", ext: [\"erl\"]},\r\n    {name: \"Factor\", mime: \"text/x-factor\", mode: \"factor\", ext: [\"factor\"]},\r\n    {name: \"Forth\", mime: \"text/x-forth\", mode: \"forth\", ext: [\"forth\", \"fth\", \"4th\"]},\r\n    {name: \"Fortran\", mime: \"text/x-fortran\", mode: \"fortran\", ext: [\"f\", \"for\", \"f77\", \"f90\"]},\r\n    {name: \"F#\", mime: \"text/x-fsharp\", mode: \"mllike\", ext: [\"fs\"], alias: [\"fsharp\"]},\r\n    {name: \"Gas\", mime: \"text/x-gas\", mode: \"gas\", ext: [\"s\"]},\r\n    {name: \"Gherkin\", mime: \"text/x-feature\", mode: \"gherkin\", ext: [\"feature\"]},\r\n    {name: \"GitHub Flavored Markdown\", mime: \"text/x-gfm\", mode: \"gfm\", file: /^(readme|contributing|history).md$/i},\r\n    {name: \"Go\", mime: \"text/x-go\", mode: \"go\", ext: [\"go\"]},\r\n    {name: \"Groovy\", mime: \"text/x-groovy\", mode: \"groovy\", ext: [\"groovy\"]},\r\n    {name: \"HAML\", mime: \"text/x-haml\", mode: \"haml\", ext: [\"haml\"]},\r\n    {name: \"Haskell\", mime: \"text/x-haskell\", mode: \"haskell\", ext: [\"hs\"]},\r\n    {name: \"Haxe\", mime: \"text/x-haxe\", mode: \"haxe\", ext: [\"hx\"]},\r\n    {name: \"HXML\", mime: \"text/x-hxml\", mode: \"haxe\", ext: [\"hxml\"]},\r\n    {name: \"ASP.NET\", mime: \"application/x-aspx\", mode: \"htmlembedded\", ext: [\"aspx\"], alias: [\"asp\", \"aspx\"]},\r\n    {name: \"HTML\", mime: \"text/html\", mode: \"htmlmixed\", ext: [\"html\", \"htm\"], alias: [\"xhtml\"]},\r\n    {name: \"HTTP\", mime: \"message/http\", mode: \"http\"},\r\n    {name: \"IDL\", mime: \"text/x-idl\", mode: \"idl\", ext: [\"pro\"]},\r\n    {name: \"Jade\", mime: \"text/x-jade\", mode: \"jade\", ext: [\"jade\"]},\r\n    {name: \"Java\", mime: \"text/x-java\", mode: \"clike\", ext: [\"java\"]},\r\n    {name: \"Java Server Pages\", mime: \"application/x-jsp\", mode: \"htmlembedded\", ext: [\"jsp\"], alias: [\"jsp\"]},\r\n    {name: \"JavaScript\", mimes: [\"text/javascript\", \"text/ecmascript\", \"application/javascript\", \"application/x-javascript\", \"application/ecmascript\"],\r\n     mode: \"javascript\", ext: [\"js\"], alias: [\"ecmascript\", \"js\", \"node\"]},\r\n    {name: \"JSON\", mimes: [\"application/json\", \"application/x-json\"], mode: \"javascript\", ext: [\"json\", \"map\"], alias: [\"json5\"]},\r\n    {name: \"JSON-LD\", mime: \"application/ld+json\", mode: \"javascript\", ext: [\"jsonld\"], alias: [\"jsonld\"]},\r\n    {name: \"Jinja2\", mime: \"null\", mode: \"jinja2\"},\r\n    {name: \"Julia\", mime: \"text/x-julia\", mode: \"julia\", ext: [\"jl\"]},\r\n    {name: \"Kotlin\", mime: \"text/x-kotlin\", mode: \"clike\", ext: [\"kt\"]},\r\n    {name: \"LESS\", mime: \"text/x-less\", mode: \"css\", ext: [\"less\"]},\r\n    {name: \"LiveScript\", mime: \"text/x-livescript\", mode: \"livescript\", ext: [\"ls\"], alias: [\"ls\"]},\r\n    {name: \"Lua\", mime: \"text/x-lua\", mode: \"lua\", ext: [\"lua\"]},\r\n    {name: \"Markdown\", mime: \"text/x-markdown\", mode: \"markdown\", ext: [\"markdown\", \"md\", \"mkd\"]},\r\n    {name: \"mIRC\", mime: \"text/mirc\", mode: \"mirc\"},\r\n    {name: \"MariaDB SQL\", mime: \"text/x-mariadb\", mode: \"sql\"},\r\n    {name: \"Mathematica\", mime: \"text/x-mathematica\", mode: \"mathematica\", ext: [\"m\", \"nb\"]},\r\n    {name: \"Modelica\", mime: \"text/x-modelica\", mode: \"modelica\", ext: [\"mo\"]},\r\n    {name: \"MUMPS\", mime: \"text/x-mumps\", mode: \"mumps\"},\r\n    {name: \"MS SQL\", mime: \"text/x-mssql\", mode: \"sql\"},\r\n    {name: \"MySQL\", mime: \"text/x-mysql\", mode: \"sql\"},\r\n    {name: \"Nginx\", mime: \"text/x-nginx-conf\", mode: \"nginx\", file: /nginx.*\\.conf$/i},\r\n    {name: \"NSIS\", mime: \"text/x-nsis\", mode: \"nsis\", ext: [\"nsh\", \"nsi\"]},\r\n    {name: \"NTriples\", mime: \"text/n-triples\", mode: \"ntriples\", ext: [\"nt\"]},\r\n    {name: \"Objective C\", mime: \"text/x-objectivec\", mode: \"clike\", ext: [\"m\", \"mm\"]},\r\n    {name: \"OCaml\", mime: \"text/x-ocaml\", mode: \"mllike\", ext: [\"ml\", \"mli\", \"mll\", \"mly\"]},\r\n    {name: \"Octave\", mime: \"text/x-octave\", mode: \"octave\", ext: [\"m\"]},\r\n    {name: \"Oz\", mime: \"text/x-oz\", mode: \"oz\", ext: [\"oz\"]},\r\n    {name: \"Pascal\", mime: \"text/x-pascal\", mode: \"pascal\", ext: [\"p\", \"pas\"]},\r\n    {name: \"PEG.js\", mime: \"null\", mode: \"pegjs\", ext: [\"jsonld\"]},\r\n    {name: \"Perl\", mime: \"text/x-perl\", mode: \"perl\", ext: [\"pl\", \"pm\"]},\r\n    {name: \"PHP\", mime: \"application/x-httpd-php\", mode: \"php\", ext: [\"php\", \"php3\", \"php4\", \"php5\", \"phtml\"]},\r\n    {name: \"Pig\", mime: \"text/x-pig\", mode: \"pig\", ext: [\"pig\"]},\r\n    {name: \"Plain Text\", mime: \"text/plain\", mode: \"null\", ext: [\"txt\", \"text\", \"conf\", \"def\", \"list\", \"log\"]},\r\n    {name: \"PLSQL\", mime: \"text/x-plsql\", mode: \"sql\", ext: [\"pls\"]},\r\n    {name: \"Properties files\", mime: \"text/x-properties\", mode: \"properties\", ext: [\"properties\", \"ini\", \"in\"], alias: [\"ini\", \"properties\"]},\r\n    {name: \"Python\", mime: \"text/x-python\", mode: \"python\", ext: [\"py\", \"pyw\"]},\r\n    {name: \"Puppet\", mime: \"text/x-puppet\", mode: \"puppet\", ext: [\"pp\"]},\r\n    {name: \"Q\", mime: \"text/x-q\", mode: \"q\", ext: [\"q\"]},\r\n    {name: \"R\", mime: \"text/x-rsrc\", mode: \"r\", ext: [\"r\"], alias: [\"rscript\"]},\r\n    {name: \"reStructuredText\", mime: \"text/x-rst\", mode: \"rst\", ext: [\"rst\"], alias: [\"rst\"]},\r\n    {name: \"RPM Changes\", mime: \"text/x-rpm-changes\", mode: \"rpm\"},\r\n    {name: \"RPM Spec\", mime: \"text/x-rpm-spec\", mode: \"rpm\", ext: [\"spec\"]},\r\n    {name: \"Ruby\", mime: \"text/x-ruby\", mode: \"ruby\", ext: [\"rb\"], alias: [\"jruby\", \"macruby\", \"rake\", \"rb\", \"rbx\"]},\r\n    {name: \"Rust\", mime: \"text/x-rustsrc\", mode: \"rust\", ext: [\"rs\"]},\r\n    {name: \"Sass\", mime: \"text/x-sass\", mode: \"sass\", ext: [\"sass\"]},\r\n    {name: \"Scala\", mime: \"text/x-scala\", mode: \"clike\", ext: [\"scala\"]},\r\n    {name: \"Scheme\", mime: \"text/x-scheme\", mode: \"scheme\", ext: [\"scm\", \"ss\"]},\r\n    {name: \"SCSS\", mime: \"text/x-scss\", mode: \"css\", ext: [\"scss\"]},\r\n    {name: \"Shell\", mime: \"text/x-sh\", mode: \"shell\", ext: [\"sh\", \"ksh\", \"bash\"], alias: [\"bash\", \"sh\", \"zsh\"], file: /^PKGBUILD$/},\r\n    {name: \"Sieve\", mime: \"application/sieve\", mode: \"sieve\", ext: [\"siv\", \"sieve\"]},\r\n    {name: \"Slim\", mimes: [\"text/x-slim\", \"application/x-slim\"], mode: \"slim\", ext: [\"slim\"]},\r\n    {name: \"Smalltalk\", mime: \"text/x-stsrc\", mode: \"smalltalk\", ext: [\"st\"]},\r\n    {name: \"Smarty\", mime: \"text/x-smarty\", mode: \"smarty\", ext: [\"tpl\"]},\r\n    {name: \"Solr\", mime: \"text/x-solr\", mode: \"solr\"},\r\n    {name: \"Soy\", mime: \"text/x-soy\", mode: \"soy\", ext: [\"soy\"], alias: [\"closure template\"]},\r\n    {name: \"SPARQL\", mime: \"application/sparql-query\", mode: \"sparql\", ext: [\"rq\", \"sparql\"], alias: [\"sparul\"]},\r\n    {name: \"Spreadsheet\", mime: \"text/x-spreadsheet\", mode: \"spreadsheet\", alias: [\"excel\", \"formula\"]},\r\n    {name: \"SQL\", mime: \"text/x-sql\", mode: \"sql\", ext: [\"sql\"]},\r\n    {name: \"Squirrel\", mime: \"text/x-squirrel\", mode: \"clike\", ext: [\"nut\"]},\r\n    {name: \"Swift\", mime: \"text/x-swift\", mode: \"swift\", ext: [\"swift\"]},\r\n    {name: \"MariaDB\", mime: \"text/x-mariadb\", mode: \"sql\"},\r\n    {name: \"sTeX\", mime: \"text/x-stex\", mode: \"stex\"},\r\n    {name: \"LaTeX\", mime: \"text/x-latex\", mode: \"stex\", ext: [\"text\", \"ltx\"], alias: [\"tex\"]},\r\n    {name: \"SystemVerilog\", mime: \"text/x-systemverilog\", mode: \"verilog\", ext: [\"v\"]},\r\n    {name: \"Tcl\", mime: \"text/x-tcl\", mode: \"tcl\", ext: [\"tcl\"]},\r\n    {name: \"Textile\", mime: \"text/x-textile\", mode: \"textile\", ext: [\"textile\"]},\r\n    {name: \"TiddlyWiki \", mime: \"text/x-tiddlywiki\", mode: \"tiddlywiki\"},\r\n    {name: \"Tiki wiki\", mime: \"text/tiki\", mode: \"tiki\"},\r\n    {name: \"TOML\", mime: \"text/x-toml\", mode: \"toml\", ext: [\"toml\"]},\r\n    {name: \"Tornado\", mime: \"text/x-tornado\", mode: \"tornado\"},\r\n    {name: \"troff\", mime: \"troff\", mode: \"troff\", ext: [\"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\"]},\r\n    {name: \"TTCN\", mime: \"text/x-ttcn\", mode: \"ttcn\", ext: [\"ttcn\", \"ttcn3\", \"ttcnpp\"]},\r\n    {name: \"TTCN_CFG\", mime: \"text/x-ttcn-cfg\", mode: \"ttcn-cfg\", ext: [\"cfg\"]},\r\n    {name: \"Turtle\", mime: \"text/turtle\", mode: \"turtle\", ext: [\"ttl\"]},\r\n    {name: \"TypeScript\", mime: \"application/typescript\", mode: \"javascript\", ext: [\"ts\"], alias: [\"ts\"]},\r\n    {name: \"Twig\", mime: \"text/x-twig\", mode: \"twig\"},\r\n    {name: \"VB.NET\", mime: \"text/x-vb\", mode: \"vb\", ext: [\"vb\"]},\r\n    {name: \"VBScript\", mime: \"text/vbscript\", mode: \"vbscript\", ext: [\"vbs\"]},\r\n    {name: \"Velocity\", mime: \"text/velocity\", mode: \"velocity\", ext: [\"vtl\"]},\r\n    {name: \"Verilog\", mime: \"text/x-verilog\", mode: \"verilog\", ext: [\"v\"]},\r\n    {name: \"VHDL\", mime: \"text/x-vhdl\", mode: \"vhdl\", ext: [\"vhd\", \"vhdl\"]},\r\n    {name: \"XML\", mimes: [\"application/xml\", \"text/xml\"], mode: \"xml\", ext: [\"xml\", \"xsl\", \"xsd\"], alias: [\"rss\", \"wsdl\", \"xsd\"]},\r\n    {name: \"XQuery\", mime: \"application/xquery\", mode: \"xquery\", ext: [\"xy\", \"xquery\"]},\r\n    {name: \"YAML\", mime: \"text/x-yaml\", mode: \"yaml\", ext: [\"yaml\", \"yml\"], alias: [\"yml\"]},\r\n    {name: \"Z80\", mime: \"text/x-z80\", mode: \"z80\", ext: [\"z80\"]},\r\n    {name: \"mscgen\", mime: \"text/x-mscgen\", mode: \"mscgen\", ext: [\"mscgen\", \"mscin\", \"msc\"]},\r\n    {name: \"xu\", mime: \"text/x-xu\", mode: \"mscgen\", ext: [\"xu\"]},\r\n    {name: \"msgenny\", mime: \"text/x-msgenny\", mode: \"mscgen\", ext: [\"msgenny\"]}\r\n  ];\r\n  // Ensure all modes have a mime property for backwards compatibility\r\n  for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\r\n    var info = CodeMirror.modeInfo[i];\r\n    if (info.mimes) info.mime = info.mimes[0];\r\n  }\r\n\r\n  CodeMirror.findModeByMIME = function(mime) {\r\n    mime = mime.toLowerCase();\r\n    for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\r\n      var info = CodeMirror.modeInfo[i];\r\n      if (info.mime == mime) return info;\r\n      if (info.mimes) for (var j = 0; j < info.mimes.length; j++)\r\n        if (info.mimes[j] == mime) return info;\r\n    }\r\n  };\r\n\r\n  CodeMirror.findModeByExtension = function(ext) {\r\n    for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\r\n      var info = CodeMirror.modeInfo[i];\r\n      if (info.ext) for (var j = 0; j < info.ext.length; j++)\r\n        if (info.ext[j] == ext) return info;\r\n    }\r\n  };\r\n\r\n  CodeMirror.findModeByFileName = function(filename) {\r\n    for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\r\n      var info = CodeMirror.modeInfo[i];\r\n      if (info.file && info.file.test(filename)) return info;\r\n    }\r\n    var dot = filename.lastIndexOf(\".\");\r\n    var ext = dot > -1 && filename.substring(dot + 1, filename.length);\r\n    if (ext) return CodeMirror.findModeByExtension(ext);\r\n  };\r\n\r\n  CodeMirror.findModeByName = function(name) {\r\n    name = name.toLowerCase();\r\n    for (var i = 0; i < CodeMirror.modeInfo.length; i++) {\r\n      var info = CodeMirror.modeInfo[i];\r\n      if (info.name.toLowerCase() == name) return info;\r\n      if (info.alias) for (var j = 0; j < info.alias.length; j++)\r\n        if (info.alias[j].toLowerCase() == name) return info;\r\n    }\r\n  };\r\n});\r\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\r\n// Distributed under an MIT license: http://codemirror.net/LICENSE\r\n\r\n(function(mod) {\r\n  if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\r\n    mod(require(\"../../lib/codemirror\"));\r\n  else if (typeof define == \"function\" && define.amd) // AMD\r\n    define([\"../../lib/codemirror\"], mod);\r\n  else // Plain browser env\r\n    mod(CodeMirror);\r\n})(function(CodeMirror) {\r\n\"use strict\";\r\n\r\nCodeMirror.defineMode(\"xml\", function(config, parserConfig) {\r\n  var indentUnit = config.indentUnit;\r\n  var multilineTagIndentFactor = parserConfig.multilineTagIndentFactor || 1;\r\n  var multilineTagIndentPastTag = parserConfig.multilineTagIndentPastTag;\r\n  if (multilineTagIndentPastTag == null) multilineTagIndentPastTag = true;\r\n\r\n  var Kludges = parserConfig.htmlMode ? {\r\n    autoSelfClosers: {'area': true, 'base': true, 'br': true, 'col': true, 'command': true,\r\n                      'embed': true, 'frame': true, 'hr': true, 'img': true, 'input': true,\r\n                      'keygen': true, 'link': true, 'meta': true, 'param': true, 'source': true,\r\n                      'track': true, 'wbr': true, 'menuitem': true},\r\n    implicitlyClosed: {'dd': true, 'li': true, 'optgroup': true, 'option': true, 'p': true,\r\n                       'rp': true, 'rt': true, 'tbody': true, 'td': true, 'tfoot': true,\r\n                       'th': true, 'tr': true},\r\n    contextGrabbers: {\r\n      'dd': {'dd': true, 'dt': true},\r\n      'dt': {'dd': true, 'dt': true},\r\n      'li': {'li': true},\r\n      'option': {'option': true, 'optgroup': true},\r\n      'optgroup': {'optgroup': true},\r\n      'p': {'address': true, 'article': true, 'aside': true, 'blockquote': true, 'dir': true,\r\n            'div': true, 'dl': true, 'fieldset': true, 'footer': true, 'form': true,\r\n            'h1': true, 'h2': true, 'h3': true, 'h4': true, 'h5': true, 'h6': true,\r\n            'header': true, 'hgroup': true, 'hr': true, 'menu': true, 'nav': true, 'ol': true,\r\n            'p': true, 'pre': true, 'section': true, 'table': true, 'ul': true},\r\n      'rp': {'rp': true, 'rt': true},\r\n      'rt': {'rp': true, 'rt': true},\r\n      'tbody': {'tbody': true, 'tfoot': true},\r\n      'td': {'td': true, 'th': true},\r\n      'tfoot': {'tbody': true},\r\n      'th': {'td': true, 'th': true},\r\n      'thead': {'tbody': true, 'tfoot': true},\r\n      'tr': {'tr': true}\r\n    },\r\n    doNotIndent: {\"pre\": true},\r\n    allowUnquoted: true,\r\n    allowMissing: true,\r\n    caseFold: true\r\n  } : {\r\n    autoSelfClosers: {},\r\n    implicitlyClosed: {},\r\n    contextGrabbers: {},\r\n    doNotIndent: {},\r\n    allowUnquoted: false,\r\n    allowMissing: false,\r\n    caseFold: false\r\n  };\r\n  var alignCDATA = parserConfig.alignCDATA;\r\n\r\n  // Return variables for tokenizers\r\n  var type, setStyle;\r\n\r\n  function inText(stream, state) {\r\n    function chain(parser) {\r\n      state.tokenize = parser;\r\n      return parser(stream, state);\r\n    }\r\n\r\n    var ch = stream.next();\r\n    if (ch == \"<\") {\r\n      if (stream.eat(\"!\")) {\r\n        if (stream.eat(\"[\")) {\r\n          if (stream.match(\"CDATA[\")) return chain(inBlock(\"atom\", \"]]>\"));\r\n          else return null;\r\n        } else if (stream.match(\"--\")) {\r\n          return chain(inBlock(\"comment\", \"-->\"));\r\n        } else if (stream.match(\"DOCTYPE\", true, true)) {\r\n          stream.eatWhile(/[\\w\\._\\-]/);\r\n          return chain(doctype(1));\r\n        } else {\r\n          return null;\r\n        }\r\n      } else if (stream.eat(\"?\")) {\r\n        stream.eatWhile(/[\\w\\._\\-]/);\r\n        state.tokenize = inBlock(\"meta\", \"?>\");\r\n        return \"meta\";\r\n      } else {\r\n        type = stream.eat(\"/\") ? \"closeTag\" : \"openTag\";\r\n        state.tokenize = inTag;\r\n        return \"tag bracket\";\r\n      }\r\n    } else if (ch == \"&\") {\r\n      var ok;\r\n      if (stream.eat(\"#\")) {\r\n        if (stream.eat(\"x\")) {\r\n          ok = stream.eatWhile(/[a-fA-F\\d]/) && stream.eat(\";\");\r\n        } else {\r\n          ok = stream.eatWhile(/[\\d]/) && stream.eat(\";\");\r\n        }\r\n      } else {\r\n        ok = stream.eatWhile(/[\\w\\.\\-:]/) && stream.eat(\";\");\r\n      }\r\n      return ok ? \"atom\" : \"error\";\r\n    } else {\r\n      stream.eatWhile(/[^&<]/);\r\n      return null;\r\n    }\r\n  }\r\n  inText.isInText = true;\r\n\r\n  function inTag(stream, state) {\r\n    var ch = stream.next();\r\n    if (ch == \">\" || (ch == \"/\" && stream.eat(\">\"))) {\r\n      state.tokenize = inText;\r\n      type = ch == \">\" ? \"endTag\" : \"selfcloseTag\";\r\n      return \"tag bracket\";\r\n    } else if (ch == \"=\") {\r\n      type = \"equals\";\r\n      return null;\r\n    } else if (ch == \"<\") {\r\n      state.tokenize = inText;\r\n      state.state = baseState;\r\n      state.tagName = state.tagStart = null;\r\n      var next = state.tokenize(stream, state);\r\n      return next ? next + \" tag error\" : \"tag error\";\r\n    } else if (/[\\'\\\"]/.test(ch)) {\r\n      state.tokenize = inAttribute(ch);\r\n      state.stringStartCol = stream.column();\r\n      return state.tokenize(stream, state);\r\n    } else {\r\n      stream.match(/^[^\\s\\u00a0=<>\\\"\\']*[^\\s\\u00a0=<>\\\"\\'\\/]/);\r\n      return \"word\";\r\n    }\r\n  }\r\n\r\n  function inAttribute(quote) {\r\n    var closure = function(stream, state) {\r\n      while (!stream.eol()) {\r\n        if (stream.next() == quote) {\r\n          state.tokenize = inTag;\r\n          break;\r\n        }\r\n      }\r\n      return \"string\";\r\n    };\r\n    closure.isInAttribute = true;\r\n    return closure;\r\n  }\r\n\r\n  function inBlock(style, terminator) {\r\n    return function(stream, state) {\r\n      while (!stream.eol()) {\r\n        if (stream.match(terminator)) {\r\n          state.tokenize = inText;\r\n          break;\r\n        }\r\n        stream.next();\r\n      }\r\n      return style;\r\n    };\r\n  }\r\n  function doctype(depth) {\r\n    return function(stream, state) {\r\n      var ch;\r\n      while ((ch = stream.next()) != null) {\r\n        if (ch == \"<\") {\r\n          state.tokenize = doctype(depth + 1);\r\n          return state.tokenize(stream, state);\r\n        } else if (ch == \">\") {\r\n          if (depth == 1) {\r\n            state.tokenize = inText;\r\n            break;\r\n          } else {\r\n            state.tokenize = doctype(depth - 1);\r\n            return state.tokenize(stream, state);\r\n          }\r\n        }\r\n      }\r\n      return \"meta\";\r\n    };\r\n  }\r\n\r\n  function Context(state, tagName, startOfLine) {\r\n    this.prev = state.context;\r\n    this.tagName = tagName;\r\n    this.indent = state.indented;\r\n    this.startOfLine = startOfLine;\r\n    if (Kludges.doNotIndent.hasOwnProperty(tagName) || (state.context && state.context.noIndent))\r\n      this.noIndent = true;\r\n  }\r\n  function popContext(state) {\r\n    if (state.context) state.context = state.context.prev;\r\n  }\r\n  function maybePopContext(state, nextTagName) {\r\n    var parentTagName;\r\n    while (true) {\r\n      if (!state.context) {\r\n        return;\r\n      }\r\n      parentTagName = state.context.tagName;\r\n      if (!Kludges.contextGrabbers.hasOwnProperty(parentTagName) ||\r\n          !Kludges.contextGrabbers[parentTagName].hasOwnProperty(nextTagName)) {\r\n        return;\r\n      }\r\n      popContext(state);\r\n    }\r\n  }\r\n\r\n  function baseState(type, stream, state) {\r\n    if (type == \"openTag\") {\r\n      state.tagStart = stream.column();\r\n      return tagNameState;\r\n    } else if (type == \"closeTag\") {\r\n      return closeTagNameState;\r\n    } else {\r\n      return baseState;\r\n    }\r\n  }\r\n  function tagNameState(type, stream, state) {\r\n    if (type == \"word\") {\r\n      state.tagName = stream.current();\r\n      setStyle = \"tag\";\r\n      return attrState;\r\n    } else {\r\n      setStyle = \"error\";\r\n      return tagNameState;\r\n    }\r\n  }\r\n  function closeTagNameState(type, stream, state) {\r\n    if (type == \"word\") {\r\n      var tagName = stream.current();\r\n      if (state.context && state.context.tagName != tagName &&\r\n          Kludges.implicitlyClosed.hasOwnProperty(state.context.tagName))\r\n        popContext(state);\r\n      if (state.context && state.context.tagName == tagName) {\r\n        setStyle = \"tag\";\r\n        return closeState;\r\n      } else {\r\n        setStyle = \"tag error\";\r\n        return closeStateErr;\r\n      }\r\n    } else {\r\n      setStyle = \"error\";\r\n      return closeStateErr;\r\n    }\r\n  }\r\n\r\n  function closeState(type, _stream, state) {\r\n    if (type != \"endTag\") {\r\n      setStyle = \"error\";\r\n      return closeState;\r\n    }\r\n    popContext(state);\r\n    return baseState;\r\n  }\r\n  function closeStateErr(type, stream, state) {\r\n    setStyle = \"error\";\r\n    return closeState(type, stream, state);\r\n  }\r\n\r\n  function attrState(type, _stream, state) {\r\n    if (type == \"word\") {\r\n      setStyle = \"attribute\";\r\n      return attrEqState;\r\n    } else if (type == \"endTag\" || type == \"selfcloseTag\") {\r\n      var tagName = state.tagName, tagStart = state.tagStart;\r\n      state.tagName = state.tagStart = null;\r\n      if (type == \"selfcloseTag\" ||\r\n          Kludges.autoSelfClosers.hasOwnProperty(tagName)) {\r\n        maybePopContext(state, tagName);\r\n      } else {\r\n        maybePopContext(state, tagName);\r\n        state.context = new Context(state, tagName, tagStart == state.indented);\r\n      }\r\n      return baseState;\r\n    }\r\n    setStyle = \"error\";\r\n    return attrState;\r\n  }\r\n  function attrEqState(type, stream, state) {\r\n    if (type == \"equals\") return attrValueState;\r\n    if (!Kludges.allowMissing) setStyle = \"error\";\r\n    return attrState(type, stream, state);\r\n  }\r\n  function attrValueState(type, stream, state) {\r\n    if (type == \"string\") return attrContinuedState;\r\n    if (type == \"word\" && Kludges.allowUnquoted) {setStyle = \"string\"; return attrState;}\r\n    setStyle = \"error\";\r\n    return attrState(type, stream, state);\r\n  }\r\n  function attrContinuedState(type, stream, state) {\r\n    if (type == \"string\") return attrContinuedState;\r\n    return attrState(type, stream, state);\r\n  }\r\n\r\n  return {\r\n    startState: function() {\r\n      return {tokenize: inText,\r\n              state: baseState,\r\n              indented: 0,\r\n              tagName: null, tagStart: null,\r\n              context: null};\r\n    },\r\n\r\n    token: function(stream, state) {\r\n      if (!state.tagName && stream.sol())\r\n        state.indented = stream.indentation();\r\n\r\n      if (stream.eatSpace()) return null;\r\n      type = null;\r\n      var style = state.tokenize(stream, state);\r\n      if ((style || type) && style != \"comment\") {\r\n        setStyle = null;\r\n        state.state = state.state(type || style, stream, state);\r\n        if (setStyle)\r\n          style = setStyle == \"error\" ? style + \" error\" : setStyle;\r\n      }\r\n      return style;\r\n    },\r\n\r\n    indent: function(state, textAfter, fullLine) {\r\n      var context = state.context;\r\n      // Indent multi-line strings (e.g. css).\r\n      if (state.tokenize.isInAttribute) {\r\n        if (state.tagStart == state.indented)\r\n          return state.stringStartCol + 1;\r\n        else\r\n          return state.indented + indentUnit;\r\n      }\r\n      if (context && context.noIndent) return CodeMirror.Pass;\r\n      if (state.tokenize != inTag && state.tokenize != inText)\r\n        return fullLine ? fullLine.match(/^(\\s*)/)[0].length : 0;\r\n      // Indent the starts of attribute names.\r\n      if (state.tagName) {\r\n        if (multilineTagIndentPastTag)\r\n          return state.tagStart + state.tagName.length + 2;\r\n        else\r\n          return state.tagStart + indentUnit * multilineTagIndentFactor;\r\n      }\r\n      if (alignCDATA && /<!\\[CDATA\\[/.test(textAfter)) return 0;\r\n      var tagAfter = textAfter && /^<(\\/)?([\\w_:\\.-]*)/.exec(textAfter);\r\n      if (tagAfter && tagAfter[1]) { // Closing tag spotted\r\n        while (context) {\r\n          if (context.tagName == tagAfter[2]) {\r\n            context = context.prev;\r\n            break;\r\n          } else if (Kludges.implicitlyClosed.hasOwnProperty(context.tagName)) {\r\n            context = context.prev;\r\n          } else {\r\n            break;\r\n          }\r\n        }\r\n      } else if (tagAfter) { // Opening tag spotted\r\n        while (context) {\r\n          var grabbers = Kludges.contextGrabbers[context.tagName];\r\n          if (grabbers && grabbers.hasOwnProperty(tagAfter[2]))\r\n            context = context.prev;\r\n          else\r\n            break;\r\n        }\r\n      }\r\n      while (context && !context.startOfLine)\r\n        context = context.prev;\r\n      if (context) return context.indent + indentUnit;\r\n      else return 0;\r\n    },\r\n\r\n    electricInput: /<\\/[\\s\\w:]+>$/,\r\n    blockCommentStart: \"<!--\",\r\n    blockCommentEnd: \"-->\",\r\n\r\n    configuration: parserConfig.htmlMode ? \"html\" : \"xml\",\r\n    helperType: parserConfig.htmlMode ? \"html\" : \"xml\"\r\n  };\r\n});\r\n\r\nCodeMirror.defineMIME(\"text/xml\", \"xml\");\r\nCodeMirror.defineMIME(\"application/xml\", \"xml\");\r\nif (!CodeMirror.mimeModes.hasOwnProperty(\"text/html\"))\r\n  CodeMirror.defineMIME(\"text/html\", {name: \"xml\", htmlMode: true});\r\n\r\n});\r\n","/**\r\n * marked - a markdown parser\r\n * Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)\r\n * https://github.com/chjj/marked\r\n */\r\n\r\n;(function() {\r\n\r\n/**\r\n * Block-Level Grammar\r\n */\r\n\r\nvar block = {\r\n  newline: /^\\n+/,\r\n  code: /^( {4}[^\\n]+\\n*)+/,\r\n  fences: noop,\r\n  hr: /^( *[-*_]){3,} *(?:\\n+|$)/,\r\n  heading: /^ *(#{1,6}) *([^\\n]+?) *#* *(?:\\n+|$)/,\r\n  nptable: noop,\r\n  lheading: /^([^\\n]+)\\n *(=|-){2,} *(?:\\n+|$)/,\r\n  blockquote: /^( *>[^\\n]+(\\n(?!def)[^\\n]+)*\\n*)+/,\r\n  list: /^( *)(bull) [\\s\\S]+?(?:hr|def|\\n{2,}(?! )(?!\\1bull )\\n*|\\s*$)/,\r\n  html: /^ *(?:comment *(?:\\n|\\s*$)|closed *(?:\\n{2,}|\\s*$)|closing *(?:\\n{2,}|\\s*$))/,\r\n  def: /^ *\\[([^\\]]+)\\]: *<?([^\\s>]+)>?(?: +[\"(]([^\\n]+)[\")])? *(?:\\n+|$)/,\r\n  table: noop,\r\n  paragraph: /^((?:[^\\n]+\\n?(?!hr|heading|lheading|blockquote|tag|def))+)\\n*/,\r\n  text: /^[^\\n]+/\r\n};\r\n\r\nblock.bullet = /(?:[*+-]|\\d+\\.)/;\r\nblock.item = /^( *)(bull) [^\\n]*(?:\\n(?!\\1bull )[^\\n]*)*/;\r\nblock.item = replace(block.item, 'gm')\r\n  (/bull/g, block.bullet)\r\n  ();\r\n\r\nblock.list = replace(block.list)\r\n  (/bull/g, block.bullet)\r\n  ('hr', '\\\\n+(?=\\\\1?(?:[-*_] *){3,}(?:\\\\n+|$))')\r\n  ('def', '\\\\n+(?=' + block.def.source + ')')\r\n  ();\r\n\r\nblock.blockquote = replace(block.blockquote)\r\n  ('def', block.def)\r\n  ();\r\n\r\nblock._tag = '(?!(?:'\r\n  + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code'\r\n  + '|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo'\r\n  + '|span|br|wbr|ins|del|img)\\\\b)\\\\w+(?!:/|[^\\\\w\\\\s@]*@)\\\\b';\r\n\r\nblock.html = replace(block.html)\r\n  ('comment', /<!--[\\s\\S]*?-->/)\r\n  ('closed', /<(tag)[\\s\\S]+?<\\/\\1>/)\r\n  ('closing', /<tag(?:\"[^\"]*\"|'[^']*'|[^'\">])*?>/)\r\n  (/tag/g, block._tag)\r\n  ();\r\n\r\nblock.paragraph = replace(block.paragraph)\r\n  ('hr', block.hr)\r\n  ('heading', block.heading)\r\n  ('lheading', block.lheading)\r\n  ('blockquote', block.blockquote)\r\n  ('tag', '<' + block._tag)\r\n  ('def', block.def)\r\n  ();\r\n\r\n/**\r\n * Normal Block Grammar\r\n */\r\n\r\nblock.normal = merge({}, block);\r\n\r\n/**\r\n * GFM Block Grammar\r\n */\r\n\r\nblock.gfm = merge({}, block.normal, {\r\n  fences: /^ *(`{3,}|~{3,})[ \\.]*(\\S+)? *\\n([\\s\\S]*?)\\s*\\1 *(?:\\n+|$)/,\r\n  paragraph: /^/,\r\n  heading: /^ *(#{1,6}) +([^\\n]+?) *#* *(?:\\n+|$)/\r\n});\r\n\r\nblock.gfm.paragraph = replace(block.paragraph)\r\n  ('(?!', '(?!'\r\n    + block.gfm.fences.source.replace('\\\\1', '\\\\2') + '|'\r\n    + block.list.source.replace('\\\\1', '\\\\3') + '|')\r\n  ();\r\n\r\n/**\r\n * GFM + Tables Block Grammar\r\n */\r\n\r\nblock.tables = merge({}, block.gfm, {\r\n  nptable: /^ *(\\S.*\\|.*)\\n *([-:]+ *\\|[-| :]*)\\n((?:.*\\|.*(?:\\n|$))*)\\n*/,\r\n  table: /^ *\\|(.+)\\n *\\|( *[-:]+[-| :]*)\\n((?: *\\|.*(?:\\n|$))*)\\n*/\r\n});\r\n\r\n/**\r\n * Block Lexer\r\n */\r\n\r\nfunction Lexer(options) {\r\n  this.tokens = [];\r\n  this.tokens.links = {};\r\n  this.options = options || marked.defaults;\r\n  this.rules = block.normal;\r\n\r\n  if (this.options.gfm) {\r\n    if (this.options.tables) {\r\n      this.rules = block.tables;\r\n    } else {\r\n      this.rules = block.gfm;\r\n    }\r\n  }\r\n}\r\n\r\n/**\r\n * Expose Block Rules\r\n */\r\n\r\nLexer.rules = block;\r\n\r\n/**\r\n * Static Lex Method\r\n */\r\n\r\nLexer.lex = function(src, options) {\r\n  var lexer = new Lexer(options);\r\n  return lexer.lex(src);\r\n};\r\n\r\n/**\r\n * Preprocessing\r\n */\r\n\r\nLexer.prototype.lex = function(src) {\r\n  src = src\r\n    .replace(/\\r\\n|\\r/g, '\\n')\r\n    .replace(/\\t/g, '    ')\r\n    .replace(/\\u00a0/g, ' ')\r\n    .replace(/\\u2424/g, '\\n');\r\n\r\n  return this.token(src, true);\r\n};\r\n\r\n/**\r\n * Lexing\r\n */\r\n\r\nLexer.prototype.token = function(src, top, bq) {\r\n  var src = src.replace(/^ +$/gm, '')\r\n    , next\r\n    , loose\r\n    , cap\r\n    , bull\r\n    , b\r\n    , item\r\n    , space\r\n    , i\r\n    , l;\r\n\r\n  while (src) {\r\n    // newline\r\n    if (cap = this.rules.newline.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      if (cap[0].length > 1) {\r\n        this.tokens.push({\r\n          type: 'space'\r\n        });\r\n      }\r\n    }\r\n\r\n    // code\r\n    if (cap = this.rules.code.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      cap = cap[0].replace(/^ {4}/gm, '');\r\n      this.tokens.push({\r\n        type: 'code',\r\n        text: !this.options.pedantic\r\n          ? cap.replace(/\\n+$/, '')\r\n          : cap\r\n      });\r\n      continue;\r\n    }\r\n\r\n    // fences (gfm)\r\n    if (cap = this.rules.fences.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      this.tokens.push({\r\n        type: 'code',\r\n        lang: cap[2],\r\n        text: cap[3] || ''\r\n      });\r\n      continue;\r\n    }\r\n\r\n    // heading\r\n    if (cap = this.rules.heading.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      this.tokens.push({\r\n        type: 'heading',\r\n        depth: cap[1].length,\r\n        text: cap[2]\r\n      });\r\n      continue;\r\n    }\r\n\r\n    // table no leading pipe (gfm)\r\n    if (top && (cap = this.rules.nptable.exec(src))) {\r\n      src = src.substring(cap[0].length);\r\n\r\n      item = {\r\n        type: 'table',\r\n        header: cap[1].replace(/^ *| *\\| *$/g, '').split(/ *\\| */),\r\n        align: cap[2].replace(/^ *|\\| *$/g, '').split(/ *\\| */),\r\n        cells: cap[3].replace(/\\n$/, '').split('\\n')\r\n      };\r\n\r\n      for (i = 0; i < item.align.length; i++) {\r\n        if (/^ *-+: *$/.test(item.align[i])) {\r\n          item.align[i] = 'right';\r\n        } else if (/^ *:-+: *$/.test(item.align[i])) {\r\n          item.align[i] = 'center';\r\n        } else if (/^ *:-+ *$/.test(item.align[i])) {\r\n          item.align[i] = 'left';\r\n        } else {\r\n          item.align[i] = null;\r\n        }\r\n      }\r\n\r\n      for (i = 0; i < item.cells.length; i++) {\r\n        item.cells[i] = item.cells[i].split(/ *\\| */);\r\n      }\r\n\r\n      this.tokens.push(item);\r\n\r\n      continue;\r\n    }\r\n\r\n    // lheading\r\n    if (cap = this.rules.lheading.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      this.tokens.push({\r\n        type: 'heading',\r\n        depth: cap[2] === '=' ? 1 : 2,\r\n        text: cap[1]\r\n      });\r\n      continue;\r\n    }\r\n\r\n    // hr\r\n    if (cap = this.rules.hr.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      this.tokens.push({\r\n        type: 'hr'\r\n      });\r\n      continue;\r\n    }\r\n\r\n    // blockquote\r\n    if (cap = this.rules.blockquote.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n\r\n      this.tokens.push({\r\n        type: 'blockquote_start'\r\n      });\r\n\r\n      cap = cap[0].replace(/^ *> ?/gm, '');\r\n\r\n      // Pass `top` to keep the current\r\n      // \"toplevel\" state. This is exactly\r\n      // how markdown.pl works.\r\n      this.token(cap, top, true);\r\n\r\n      this.tokens.push({\r\n        type: 'blockquote_end'\r\n      });\r\n\r\n      continue;\r\n    }\r\n\r\n    // list\r\n    if (cap = this.rules.list.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      bull = cap[2];\r\n\r\n      this.tokens.push({\r\n        type: 'list_start',\r\n        ordered: bull.length > 1\r\n      });\r\n\r\n      // Get each top-level item.\r\n      cap = cap[0].match(this.rules.item);\r\n\r\n      next = false;\r\n      l = cap.length;\r\n      i = 0;\r\n\r\n      for (; i < l; i++) {\r\n        item = cap[i];\r\n\r\n        // Remove the list item's bullet\r\n        // so it is seen as the next token.\r\n        space = item.length;\r\n        item = item.replace(/^ *([*+-]|\\d+\\.) +/, '');\r\n\r\n        // Outdent whatever the\r\n        // list item contains. Hacky.\r\n        if (~item.indexOf('\\n ')) {\r\n          space -= item.length;\r\n          item = !this.options.pedantic\r\n            ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '')\r\n            : item.replace(/^ {1,4}/gm, '');\r\n        }\r\n\r\n        // Determine whether the next list item belongs here.\r\n        // Backpedal if it does not belong in this list.\r\n        if (this.options.smartLists && i !== l - 1) {\r\n          b = block.bullet.exec(cap[i + 1])[0];\r\n          if (bull !== b && !(bull.length > 1 && b.length > 1)) {\r\n            src = cap.slice(i + 1).join('\\n') + src;\r\n            i = l - 1;\r\n          }\r\n        }\r\n\r\n        // Determine whether item is loose or not.\r\n        // Use: /(^|\\n)(?! )[^\\n]+\\n\\n(?!\\s*$)/\r\n        // for discount behavior.\r\n        loose = next || /\\n\\n(?!\\s*$)/.test(item);\r\n        if (i !== l - 1) {\r\n          next = item.charAt(item.length - 1) === '\\n';\r\n          if (!loose) loose = next;\r\n        }\r\n\r\n        this.tokens.push({\r\n          type: loose\r\n            ? 'loose_item_start'\r\n            : 'list_item_start'\r\n        });\r\n\r\n        // Recurse.\r\n        this.token(item, false, bq);\r\n\r\n        this.tokens.push({\r\n          type: 'list_item_end'\r\n        });\r\n      }\r\n\r\n      this.tokens.push({\r\n        type: 'list_end'\r\n      });\r\n\r\n      continue;\r\n    }\r\n\r\n    // html\r\n    if (cap = this.rules.html.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      this.tokens.push({\r\n        type: this.options.sanitize\r\n          ? 'paragraph'\r\n          : 'html',\r\n        pre: !this.options.sanitizer\r\n          && (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),\r\n        text: cap[0]\r\n      });\r\n      continue;\r\n    }\r\n\r\n    // def\r\n    if ((!bq && top) && (cap = this.rules.def.exec(src))) {\r\n      src = src.substring(cap[0].length);\r\n      this.tokens.links[cap[1].toLowerCase()] = {\r\n        href: cap[2],\r\n        title: cap[3]\r\n      };\r\n      continue;\r\n    }\r\n\r\n    // table (gfm)\r\n    if (top && (cap = this.rules.table.exec(src))) {\r\n      src = src.substring(cap[0].length);\r\n\r\n      item = {\r\n        type: 'table',\r\n        header: cap[1].replace(/^ *| *\\| *$/g, '').split(/ *\\| */),\r\n        align: cap[2].replace(/^ *|\\| *$/g, '').split(/ *\\| */),\r\n        cells: cap[3].replace(/(?: *\\| *)?\\n$/, '').split('\\n')\r\n      };\r\n\r\n      for (i = 0; i < item.align.length; i++) {\r\n        if (/^ *-+: *$/.test(item.align[i])) {\r\n          item.align[i] = 'right';\r\n        } else if (/^ *:-+: *$/.test(item.align[i])) {\r\n          item.align[i] = 'center';\r\n        } else if (/^ *:-+ *$/.test(item.align[i])) {\r\n          item.align[i] = 'left';\r\n        } else {\r\n          item.align[i] = null;\r\n        }\r\n      }\r\n\r\n      for (i = 0; i < item.cells.length; i++) {\r\n        item.cells[i] = item.cells[i]\r\n          .replace(/^ *\\| *| *\\| *$/g, '')\r\n          .split(/ *\\| */);\r\n      }\r\n\r\n      this.tokens.push(item);\r\n\r\n      continue;\r\n    }\r\n\r\n    // top-level paragraph\r\n    if (top && (cap = this.rules.paragraph.exec(src))) {\r\n      src = src.substring(cap[0].length);\r\n      this.tokens.push({\r\n        type: 'paragraph',\r\n        text: cap[1].charAt(cap[1].length - 1) === '\\n'\r\n          ? cap[1].slice(0, -1)\r\n          : cap[1]\r\n      });\r\n      continue;\r\n    }\r\n\r\n    // text\r\n    if (cap = this.rules.text.exec(src)) {\r\n      // Top-level should never reach here.\r\n      src = src.substring(cap[0].length);\r\n      this.tokens.push({\r\n        type: 'text',\r\n        text: cap[0]\r\n      });\r\n      continue;\r\n    }\r\n\r\n    if (src) {\r\n      throw new\r\n        Error('Infinite loop on byte: ' + src.charCodeAt(0));\r\n    }\r\n  }\r\n\r\n  return this.tokens;\r\n};\r\n\r\n/**\r\n * Inline-Level Grammar\r\n */\r\n\r\nvar inline = {\r\n  escape: /^\\\\([\\\\`*{}\\[\\]()#+\\-.!_>])/,\r\n  autolink: /^<([^ >]+(@|:\\/)[^ >]+)>/,\r\n  url: noop,\r\n  tag: /^<!--[\\s\\S]*?-->|^<\\/?\\w+(?:\"[^\"]*\"|'[^']*'|[^'\">])*?>/,\r\n  link: /^!?\\[(inside)\\]\\(href\\)/,\r\n  reflink: /^!?\\[(inside)\\]\\s*\\[([^\\]]*)\\]/,\r\n  nolink: /^!?\\[((?:\\[[^\\]]*\\]|[^\\[\\]])*)\\]/,\r\n  strong: /^__([\\s\\S]+?)__(?!_)|^\\*\\*([\\s\\S]+?)\\*\\*(?!\\*)/,\r\n  em: /^\\b_((?:[^_]|__)+?)_\\b|^\\*((?:\\*\\*|[\\s\\S])+?)\\*(?!\\*)/,\r\n  code: /^(`+)\\s*([\\s\\S]*?[^`])\\s*\\1(?!`)/,\r\n  br: /^ {2,}\\n(?!\\s*$)/,\r\n  del: noop,\r\n  text: /^[\\s\\S]+?(?=[\\\\<!\\[_*`]| {2,}\\n|$)/\r\n};\r\n\r\ninline._inside = /(?:\\[[^\\]]*\\]|[^\\[\\]]|\\](?=[^\\[]*\\]))*/;\r\ninline._href = /\\s*<?([\\s\\S]*?)>?(?:\\s+['\"]([\\s\\S]*?)['\"])?\\s*/;\r\n\r\ninline.link = replace(inline.link)\r\n  ('inside', inline._inside)\r\n  ('href', inline._href)\r\n  ();\r\n\r\ninline.reflink = replace(inline.reflink)\r\n  ('inside', inline._inside)\r\n  ();\r\n\r\n/**\r\n * Normal Inline Grammar\r\n */\r\n\r\ninline.normal = merge({}, inline);\r\n\r\n/**\r\n * Pedantic Inline Grammar\r\n */\r\n\r\ninline.pedantic = merge({}, inline.normal, {\r\n  strong: /^__(?=\\S)([\\s\\S]*?\\S)__(?!_)|^\\*\\*(?=\\S)([\\s\\S]*?\\S)\\*\\*(?!\\*)/,\r\n  em: /^_(?=\\S)([\\s\\S]*?\\S)_(?!_)|^\\*(?=\\S)([\\s\\S]*?\\S)\\*(?!\\*)/\r\n});\r\n\r\n/**\r\n * GFM Inline Grammar\r\n */\r\n\r\ninline.gfm = merge({}, inline.normal, {\r\n  escape: replace(inline.escape)('])', '~|])')(),\r\n  url: /^(https?:\\/\\/[^\\s<]+[^<.,:;\"')\\]\\s])/,\r\n  del: /^~~(?=\\S)([\\s\\S]*?\\S)~~/,\r\n  text: replace(inline.text)\r\n    (']|', '~]|')\r\n    ('|', '|https?://|')\r\n    ()\r\n});\r\n\r\n/**\r\n * GFM + Line Breaks Inline Grammar\r\n */\r\n\r\ninline.breaks = merge({}, inline.gfm, {\r\n  br: replace(inline.br)('{2,}', '*')(),\r\n  text: replace(inline.gfm.text)('{2,}', '*')()\r\n});\r\n\r\n/**\r\n * Inline Lexer & Compiler\r\n */\r\n\r\nfunction InlineLexer(links, options) {\r\n  this.options = options || marked.defaults;\r\n  this.links = links;\r\n  this.rules = inline.normal;\r\n  this.renderer = this.options.renderer || new Renderer;\r\n  this.renderer.options = this.options;\r\n\r\n  if (!this.links) {\r\n    throw new\r\n      Error('Tokens array requires a `links` property.');\r\n  }\r\n\r\n  if (this.options.gfm) {\r\n    if (this.options.breaks) {\r\n      this.rules = inline.breaks;\r\n    } else {\r\n      this.rules = inline.gfm;\r\n    }\r\n  } else if (this.options.pedantic) {\r\n    this.rules = inline.pedantic;\r\n  }\r\n}\r\n\r\n/**\r\n * Expose Inline Rules\r\n */\r\n\r\nInlineLexer.rules = inline;\r\n\r\n/**\r\n * Static Lexing/Compiling Method\r\n */\r\n\r\nInlineLexer.output = function(src, links, options) {\r\n  var inline = new InlineLexer(links, options);\r\n  return inline.output(src);\r\n};\r\n\r\n/**\r\n * Lexing/Compiling\r\n */\r\n\r\nInlineLexer.prototype.output = function(src) {\r\n  var out = ''\r\n    , link\r\n    , text\r\n    , href\r\n    , cap;\r\n\r\n  while (src) {\r\n    // escape\r\n    if (cap = this.rules.escape.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      out += cap[1];\r\n      continue;\r\n    }\r\n\r\n    // autolink\r\n    if (cap = this.rules.autolink.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      if (cap[2] === '@') {\r\n        text = cap[1].charAt(6) === ':'\r\n          ? this.mangle(cap[1].substring(7))\r\n          : this.mangle(cap[1]);\r\n        href = this.mangle('mailto:') + text;\r\n      } else {\r\n        text = escape(cap[1]);\r\n        href = text;\r\n      }\r\n      out += this.renderer.link(href, null, text);\r\n      continue;\r\n    }\r\n\r\n    // url (gfm)\r\n    if (!this.inLink && (cap = this.rules.url.exec(src))) {\r\n      src = src.substring(cap[0].length);\r\n      text = escape(cap[1]);\r\n      href = text;\r\n      out += this.renderer.link(href, null, text);\r\n      continue;\r\n    }\r\n\r\n    // tag\r\n    if (cap = this.rules.tag.exec(src)) {\r\n      if (!this.inLink && /^<a /i.test(cap[0])) {\r\n        this.inLink = true;\r\n      } else if (this.inLink && /^<\\/a>/i.test(cap[0])) {\r\n        this.inLink = false;\r\n      }\r\n      src = src.substring(cap[0].length);\r\n      out += this.options.sanitize\r\n        ? this.options.sanitizer\r\n          ? this.options.sanitizer(cap[0])\r\n          : escape(cap[0])\r\n        : cap[0]\r\n      continue;\r\n    }\r\n\r\n    // link\r\n    if (cap = this.rules.link.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      this.inLink = true;\r\n      out += this.outputLink(cap, {\r\n        href: cap[2],\r\n        title: cap[3]\r\n      });\r\n      this.inLink = false;\r\n      continue;\r\n    }\r\n\r\n    // reflink, nolink\r\n    if ((cap = this.rules.reflink.exec(src))\r\n        || (cap = this.rules.nolink.exec(src))) {\r\n      src = src.substring(cap[0].length);\r\n      link = (cap[2] || cap[1]).replace(/\\s+/g, ' ');\r\n      link = this.links[link.toLowerCase()];\r\n      if (!link || !link.href) {\r\n        out += cap[0].charAt(0);\r\n        src = cap[0].substring(1) + src;\r\n        continue;\r\n      }\r\n      this.inLink = true;\r\n      out += this.outputLink(cap, link);\r\n      this.inLink = false;\r\n      continue;\r\n    }\r\n\r\n    // strong\r\n    if (cap = this.rules.strong.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      out += this.renderer.strong(this.output(cap[2] || cap[1]));\r\n      continue;\r\n    }\r\n\r\n    // em\r\n    if (cap = this.rules.em.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      out += this.renderer.em(this.output(cap[2] || cap[1]));\r\n      continue;\r\n    }\r\n\r\n    // code\r\n    if (cap = this.rules.code.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      out += this.renderer.codespan(escape(cap[2], true));\r\n      continue;\r\n    }\r\n\r\n    // br\r\n    if (cap = this.rules.br.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      out += this.renderer.br();\r\n      continue;\r\n    }\r\n\r\n    // del (gfm)\r\n    if (cap = this.rules.del.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      out += this.renderer.del(this.output(cap[1]));\r\n      continue;\r\n    }\r\n\r\n    // text\r\n    if (cap = this.rules.text.exec(src)) {\r\n      src = src.substring(cap[0].length);\r\n      out += this.renderer.text(escape(this.smartypants(cap[0])));\r\n      continue;\r\n    }\r\n\r\n    if (src) {\r\n      throw new\r\n        Error('Infinite loop on byte: ' + src.charCodeAt(0));\r\n    }\r\n  }\r\n\r\n  return out;\r\n};\r\n\r\n/**\r\n * Compile Link\r\n */\r\n\r\nInlineLexer.prototype.outputLink = function(cap, link) {\r\n  var href = escape(link.href)\r\n    , title = link.title ? escape(link.title) : null;\r\n\r\n  return cap[0].charAt(0) !== '!'\r\n    ? this.renderer.link(href, title, this.output(cap[1]))\r\n    : this.renderer.image(href, title, escape(cap[1]));\r\n};\r\n\r\n/**\r\n * Smartypants Transformations\r\n */\r\n\r\nInlineLexer.prototype.smartypants = function(text) {\r\n  if (!this.options.smartypants) return text;\r\n  return text\r\n    // em-dashes\r\n    .replace(/---/g, '\\u2014')\r\n    // en-dashes\r\n    .replace(/--/g, '\\u2013')\r\n    // opening singles\r\n    .replace(/(^|[-\\u2014/(\\[{\"\\s])'/g, '$1\\u2018')\r\n    // closing singles & apostrophes\r\n    .replace(/'/g, '\\u2019')\r\n    // opening doubles\r\n    .replace(/(^|[-\\u2014/(\\[{\\u2018\\s])\"/g, '$1\\u201c')\r\n    // closing doubles\r\n    .replace(/\"/g, '\\u201d')\r\n    // ellipses\r\n    .replace(/\\.{3}/g, '\\u2026');\r\n};\r\n\r\n/**\r\n * Mangle Links\r\n */\r\n\r\nInlineLexer.prototype.mangle = function(text) {\r\n  if (!this.options.mangle) return text;\r\n  var out = ''\r\n    , l = text.length\r\n    , i = 0\r\n    , ch;\r\n\r\n  for (; i < l; i++) {\r\n    ch = text.charCodeAt(i);\r\n    if (Math.random() > 0.5) {\r\n      ch = 'x' + ch.toString(16);\r\n    }\r\n    out += '&#' + ch + ';';\r\n  }\r\n\r\n  return out;\r\n};\r\n\r\n/**\r\n * Renderer\r\n */\r\n\r\nfunction Renderer(options) {\r\n  this.options = options || {};\r\n}\r\n\r\nRenderer.prototype.code = function(code, lang, escaped) {\r\n  if (this.options.highlight) {\r\n    var out = this.options.highlight(code, lang);\r\n    if (out != null && out !== code) {\r\n      escaped = true;\r\n      code = out;\r\n    }\r\n  }\r\n\r\n  if (!lang) {\r\n    return '<pre><code>'\r\n      + (escaped ? code : escape(code, true))\r\n      + '\\n</code></pre>';\r\n  }\r\n\r\n  return '<pre><code class=\"'\r\n    + this.options.langPrefix\r\n    + escape(lang, true)\r\n    + '\">'\r\n    + (escaped ? code : escape(code, true))\r\n    + '\\n</code></pre>\\n';\r\n};\r\n\r\nRenderer.prototype.blockquote = function(quote) {\r\n  return '<blockquote>\\n' + quote + '</blockquote>\\n';\r\n};\r\n\r\nRenderer.prototype.html = function(html) {\r\n  return html;\r\n};\r\n\r\nRenderer.prototype.heading = function(text, level, raw) {\r\n  return '<h'\r\n    + level\r\n    + ' id=\"'\r\n    + this.options.headerPrefix\r\n    + raw.toLowerCase().replace(/[^\\w]+/g, '-')\r\n    + '\">'\r\n    + text\r\n    + '</h'\r\n    + level\r\n    + '>\\n';\r\n};\r\n\r\nRenderer.prototype.hr = function() {\r\n  return this.options.xhtml ? '<hr/>\\n' : '<hr>\\n';\r\n};\r\n\r\nRenderer.prototype.list = function(body, ordered) {\r\n  var type = ordered ? 'ol' : 'ul';\r\n  return '<' + type + '>\\n' + body + '</' + type + '>\\n';\r\n};\r\n\r\nRenderer.prototype.listitem = function(text) {\r\n  return '<li>' + text + '</li>\\n';\r\n};\r\n\r\nRenderer.prototype.paragraph = function(text) {\r\n  return '<p>' + text + '</p>\\n';\r\n};\r\n\r\nRenderer.prototype.table = function(header, body) {\r\n  return '<table>\\n'\r\n    + '<thead>\\n'\r\n    + header\r\n    + '</thead>\\n'\r\n    + '<tbody>\\n'\r\n    + body\r\n    + '</tbody>\\n'\r\n    + '</table>\\n';\r\n};\r\n\r\nRenderer.prototype.tablerow = function(content) {\r\n  return '<tr>\\n' + content + '</tr>\\n';\r\n};\r\n\r\nRenderer.prototype.tablecell = function(content, flags) {\r\n  var type = flags.header ? 'th' : 'td';\r\n  var tag = flags.align\r\n    ? '<' + type + ' style=\"text-align:' + flags.align + '\">'\r\n    : '<' + type + '>';\r\n  return tag + content + '</' + type + '>\\n';\r\n};\r\n\r\n// span level renderer\r\nRenderer.prototype.strong = function(text) {\r\n  return '<strong>' + text + '</strong>';\r\n};\r\n\r\nRenderer.prototype.em = function(text) {\r\n  return '<em>' + text + '</em>';\r\n};\r\n\r\nRenderer.prototype.codespan = function(text) {\r\n  return '<code>' + text + '</code>';\r\n};\r\n\r\nRenderer.prototype.br = function() {\r\n  return this.options.xhtml ? '<br/>' : '<br>';\r\n};\r\n\r\nRenderer.prototype.del = function(text) {\r\n  return '<del>' + text + '</del>';\r\n};\r\n\r\nRenderer.prototype.link = function(href, title, text) {\r\n  if (this.options.sanitize) {\r\n    try {\r\n      var prot = decodeURIComponent(unescape(href))\r\n        .replace(/[^\\w:]/g, '')\r\n        .toLowerCase();\r\n    } catch (e) {\r\n      return '';\r\n    }\r\n    if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0) {\r\n      return '';\r\n    }\r\n  }\r\n  var out = '<a href=\"' + href + '\"';\r\n  if (title) {\r\n    out += ' title=\"' + title + '\"';\r\n  }\r\n  out += '>' + text + '</a>';\r\n  return out;\r\n};\r\n\r\nRenderer.prototype.image = function(href, title, text) {\r\n  var out = '<img src=\"' + href + '\" alt=\"' + text + '\"';\r\n  if (title) {\r\n    out += ' title=\"' + title + '\"';\r\n  }\r\n  out += this.options.xhtml ? '/>' : '>';\r\n  return out;\r\n};\r\n\r\nRenderer.prototype.text = function(text) {\r\n  return text;\r\n};\r\n\r\n/**\r\n * Parsing & Compiling\r\n */\r\n\r\nfunction Parser(options) {\r\n  this.tokens = [];\r\n  this.token = null;\r\n  this.options = options || marked.defaults;\r\n  this.options.renderer = this.options.renderer || new Renderer;\r\n  this.renderer = this.options.renderer;\r\n  this.renderer.options = this.options;\r\n}\r\n\r\n/**\r\n * Static Parse Method\r\n */\r\n\r\nParser.parse = function(src, options, renderer) {\r\n  var parser = new Parser(options, renderer);\r\n  return parser.parse(src);\r\n};\r\n\r\n/**\r\n * Parse Loop\r\n */\r\n\r\nParser.prototype.parse = function(src) {\r\n  this.inline = new InlineLexer(src.links, this.options, this.renderer);\r\n  this.tokens = src.reverse();\r\n\r\n  var out = '';\r\n  while (this.next()) {\r\n    out += this.tok();\r\n  }\r\n\r\n  return out;\r\n};\r\n\r\n/**\r\n * Next Token\r\n */\r\n\r\nParser.prototype.next = function() {\r\n  return this.token = this.tokens.pop();\r\n};\r\n\r\n/**\r\n * Preview Next Token\r\n */\r\n\r\nParser.prototype.peek = function() {\r\n  return this.tokens[this.tokens.length - 1] || 0;\r\n};\r\n\r\n/**\r\n * Parse Text Tokens\r\n */\r\n\r\nParser.prototype.parseText = function() {\r\n  var body = this.token.text;\r\n\r\n  while (this.peek().type === 'text') {\r\n    body += '\\n' + this.next().text;\r\n  }\r\n\r\n  return this.inline.output(body);\r\n};\r\n\r\n/**\r\n * Parse Current Token\r\n */\r\n\r\nParser.prototype.tok = function() {\r\n  switch (this.token.type) {\r\n    case 'space': {\r\n      return '';\r\n    }\r\n    case 'hr': {\r\n      return this.renderer.hr();\r\n    }\r\n    case 'heading': {\r\n      return this.renderer.heading(\r\n        this.inline.output(this.token.text),\r\n        this.token.depth,\r\n        this.token.text);\r\n    }\r\n    case 'code': {\r\n      return this.renderer.code(this.token.text,\r\n        this.token.lang,\r\n        this.token.escaped);\r\n    }\r\n    case 'table': {\r\n      var header = ''\r\n        , body = ''\r\n        , i\r\n        , row\r\n        , cell\r\n        , flags\r\n        , j;\r\n\r\n      // header\r\n      cell = '';\r\n      for (i = 0; i < this.token.header.length; i++) {\r\n        flags = { header: true, align: this.token.align[i] };\r\n        cell += this.renderer.tablecell(\r\n          this.inline.output(this.token.header[i]),\r\n          { header: true, align: this.token.align[i] }\r\n        );\r\n      }\r\n      header += this.renderer.tablerow(cell);\r\n\r\n      for (i = 0; i < this.token.cells.length; i++) {\r\n        row = this.token.cells[i];\r\n\r\n        cell = '';\r\n        for (j = 0; j < row.length; j++) {\r\n          cell += this.renderer.tablecell(\r\n            this.inline.output(row[j]),\r\n            { header: false, align: this.token.align[j] }\r\n          );\r\n        }\r\n\r\n        body += this.renderer.tablerow(cell);\r\n      }\r\n      return this.renderer.table(header, body);\r\n    }\r\n    case 'blockquote_start': {\r\n      var body = '';\r\n\r\n      while (this.next().type !== 'blockquote_end') {\r\n        body += this.tok();\r\n      }\r\n\r\n      return this.renderer.blockquote(body);\r\n    }\r\n    case 'list_start': {\r\n      var body = ''\r\n        , ordered = this.token.ordered;\r\n\r\n      while (this.next().type !== 'list_end') {\r\n        body += this.tok();\r\n      }\r\n\r\n      return this.renderer.list(body, ordered);\r\n    }\r\n    case 'list_item_start': {\r\n      var body = '';\r\n\r\n      while (this.next().type !== 'list_item_end') {\r\n        body += this.token.type === 'text'\r\n          ? this.parseText()\r\n          : this.tok();\r\n      }\r\n\r\n      return this.renderer.listitem(body);\r\n    }\r\n    case 'loose_item_start': {\r\n      var body = '';\r\n\r\n      while (this.next().type !== 'list_item_end') {\r\n        body += this.tok();\r\n      }\r\n\r\n      return this.renderer.listitem(body);\r\n    }\r\n    case 'html': {\r\n      var html = !this.token.pre && !this.options.pedantic\r\n        ? this.inline.output(this.token.text)\r\n        : this.token.text;\r\n      return this.renderer.html(html);\r\n    }\r\n    case 'paragraph': {\r\n      return this.renderer.paragraph(this.inline.output(this.token.text));\r\n    }\r\n    case 'text': {\r\n      return this.renderer.paragraph(this.parseText());\r\n    }\r\n  }\r\n};\r\n\r\n/**\r\n * Helpers\r\n */\r\n\r\nfunction escape(html, encode) {\r\n  return html\r\n    .replace(!encode ? /&(?!#?\\w+;)/g : /&/g, '&amp;')\r\n    .replace(/</g, '&lt;')\r\n    .replace(/>/g, '&gt;')\r\n    .replace(/\"/g, '&quot;')\r\n    .replace(/'/g, '&#39;');\r\n}\r\n\r\nfunction unescape(html) {\r\n  return html.replace(/&([#\\w]+);/g, function(_, n) {\r\n    n = n.toLowerCase();\r\n    if (n === 'colon') return ':';\r\n    if (n.charAt(0) === '#') {\r\n      return n.charAt(1) === 'x'\r\n        ? String.fromCharCode(parseInt(n.substring(2), 16))\r\n        : String.fromCharCode(+n.substring(1));\r\n    }\r\n    return '';\r\n  });\r\n}\r\n\r\nfunction replace(regex, opt) {\r\n  regex = regex.source;\r\n  opt = opt || '';\r\n  return function self(name, val) {\r\n    if (!name) return new RegExp(regex, opt);\r\n    val = val.source || val;\r\n    val = val.replace(/(^|[^\\[])\\^/g, '$1');\r\n    regex = regex.replace(name, val);\r\n    return self;\r\n  };\r\n}\r\n\r\nfunction noop() {}\r\nnoop.exec = noop;\r\n\r\nfunction merge(obj) {\r\n  var i = 1\r\n    , target\r\n    , key;\r\n\r\n  for (; i < arguments.length; i++) {\r\n    target = arguments[i];\r\n    for (key in target) {\r\n      if (Object.prototype.hasOwnProperty.call(target, key)) {\r\n        obj[key] = target[key];\r\n      }\r\n    }\r\n  }\r\n\r\n  return obj;\r\n}\r\n\r\n\r\n/**\r\n * Marked\r\n */\r\n\r\nfunction marked(src, opt, callback) {\r\n  if (callback || typeof opt === 'function') {\r\n    if (!callback) {\r\n      callback = opt;\r\n      opt = null;\r\n    }\r\n\r\n    opt = merge({}, marked.defaults, opt || {});\r\n\r\n    var highlight = opt.highlight\r\n      , tokens\r\n      , pending\r\n      , i = 0;\r\n\r\n    try {\r\n      tokens = Lexer.lex(src, opt)\r\n    } catch (e) {\r\n      return callback(e);\r\n    }\r\n\r\n    pending = tokens.length;\r\n\r\n    var done = function(err) {\r\n      if (err) {\r\n        opt.highlight = highlight;\r\n        return callback(err);\r\n      }\r\n\r\n      var out;\r\n\r\n      try {\r\n        out = Parser.parse(tokens, opt);\r\n      } catch (e) {\r\n        err = e;\r\n      }\r\n\r\n      opt.highlight = highlight;\r\n\r\n      return err\r\n        ? callback(err)\r\n        : callback(null, out);\r\n    };\r\n\r\n    if (!highlight || highlight.length < 3) {\r\n      return done();\r\n    }\r\n\r\n    delete opt.highlight;\r\n\r\n    if (!pending) return done();\r\n\r\n    for (; i < tokens.length; i++) {\r\n      (function(token) {\r\n        if (token.type !== 'code') {\r\n          return --pending || done();\r\n        }\r\n        return highlight(token.text, token.lang, function(err, code) {\r\n          if (err) return done(err);\r\n          if (code == null || code === token.text) {\r\n            return --pending || done();\r\n          }\r\n          token.text = code;\r\n          token.escaped = true;\r\n          --pending || done();\r\n        });\r\n      })(tokens[i]);\r\n    }\r\n\r\n    return;\r\n  }\r\n  try {\r\n    if (opt) opt = merge({}, marked.defaults, opt);\r\n    return Parser.parse(Lexer.lex(src, opt), opt);\r\n  } catch (e) {\r\n    e.message += '\\nPlease report this to https://github.com/chjj/marked.';\r\n    if ((opt || marked.defaults).silent) {\r\n      return '<p>An error occured:</p><pre>'\r\n        + escape(e.message + '', true)\r\n        + '</pre>';\r\n    }\r\n    throw e;\r\n  }\r\n}\r\n\r\n/**\r\n * Options\r\n */\r\n\r\nmarked.options =\r\nmarked.setOptions = function(opt) {\r\n  merge(marked.defaults, opt);\r\n  return marked;\r\n};\r\n\r\nmarked.defaults = {\r\n  gfm: true,\r\n  tables: true,\r\n  breaks: false,\r\n  pedantic: false,\r\n  sanitize: false,\r\n  sanitizer: null,\r\n  mangle: true,\r\n  smartLists: false,\r\n  silent: false,\r\n  highlight: null,\r\n  langPrefix: 'lang-',\r\n  smartypants: false,\r\n  headerPrefix: '',\r\n  renderer: new Renderer,\r\n  xhtml: false\r\n};\r\n\r\n/**\r\n * Expose\r\n */\r\n\r\nmarked.Parser = Parser;\r\nmarked.parser = Parser.parse;\r\n\r\nmarked.Renderer = Renderer;\r\n\r\nmarked.Lexer = Lexer;\r\nmarked.lexer = Lexer.lex;\r\n\r\nmarked.InlineLexer = InlineLexer;\r\nmarked.inlineLexer = InlineLexer.output;\r\n\r\nmarked.parse = marked;\r\n\r\nif (typeof module !== 'undefined' && typeof exports === 'object') {\r\n  module.exports = marked;\r\n} else if (typeof define === 'function' && define.amd) {\r\n  define(function() { return marked; });\r\n} else {\r\n  this.marked = marked;\r\n}\r\n\r\n}).call(function() {\r\n  return this || (typeof window !== 'undefined' ? window : global);\r\n}());\r\n","// CodeMirror, copyright (c) by Marijn Haverbeke and others\r\n// Distributed under an MIT license: http://codemirror.net/LICENSE\r\n\r\nvar CodeMirror = require(\"codemirror\");\r\n\r\nCodeMirror.commands.tabAndIndentMarkdownList = function (cm) {\r\n\tvar ranges = cm.listSelections();\r\n\tvar pos = ranges[0].head;\r\n\tvar eolState = cm.getStateAfter(pos.line);\r\n\tvar inList = eolState.list !== false;\r\n\r\n\tif (inList) {\r\n\t\tcm.execCommand(\"indentMore\");\r\n\t\treturn;\r\n\t}\r\n\r\n\tif (cm.options.indentWithTabs) {\r\n\t\tcm.execCommand(\"insertTab\");\r\n\t}\r\n\telse {\r\n\t\tvar spaces = Array(cm.options.tabSize + 1).join(\" \");\r\n\t\tcm.replaceSelection(spaces);\r\n\t}\r\n};\r\n\r\nCodeMirror.commands.shiftTabAndUnindentMarkdownList = function (cm) {\r\n\tvar ranges = cm.listSelections();\r\n\tvar pos = ranges[0].head;\r\n\tvar eolState = cm.getStateAfter(pos.line);\r\n\tvar inList = eolState.list !== false;\r\n\r\n\tif (inList) {\r\n\t\tcm.execCommand(\"indentLess\");\r\n\t\treturn;\r\n\t}\r\n\r\n\tif (cm.options.indentWithTabs) {\r\n\t\tcm.execCommand(\"insertTab\");\r\n\t}\r\n\telse {\r\n\t\tvar spaces = Array(cm.options.tabSize + 1).join(\" \");\r\n\t\tcm.replaceSelection(spaces);\r\n\t}\r\n};\r\n","/*global require,module*/\n\"use strict\";\nvar CodeMirror = require(\"codemirror\");\nrequire(\"codemirror/addon/edit/continuelist.js\");\nrequire(\"./codemirror/tablist\");\nrequire(\"codemirror/addon/display/fullscreen.js\");\nrequire(\"codemirror/mode/markdown/markdown.js\");\nrequire(\"codemirror/addon/mode/overlay.js\");\nrequire(\"codemirror/mode/gfm/gfm.js\");\nrequire(\"codemirror/mode/xml/xml.js\");\nrequire(\"spell-checker\");\nvar marked = require(\"marked\");\n\n\n// Some variables\nvar isMac = /Mac/.test(navigator.platform);\n\nvar shortcuts = {\n\t\"Cmd-B\": toggleBold,\n\t\"Cmd-I\": toggleItalic,\n\t\"Cmd-K\": drawLink,\n\t\"Cmd-H\": toggleHeadingSmaller,\n\t\"Shift-Cmd-H\": toggleHeadingBigger,\n\t\"Cmd-Alt-I\": drawImage,\n\t\"Cmd-'\": toggleBlockquote,\n\t\"Cmd-Alt-L\": toggleOrderedList,\n\t\"Cmd-L\": toggleUnorderedList,\n\t\"Cmd-Alt-C\": toggleCodeBlock,\n\t\"Cmd-P\": togglePreview\n};\n\nvar isMobile = function() {\n\tvar check = false;\n\t(function(a) {\n\t\tif(/(android|bb\\d+|meego).+mobile|avantgo|bada\\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(a) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\\-(n|u)|c55\\/|capi|ccwa|cdm\\-|cell|chtm|cldc|cmd\\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\\-s|devi|dica|dmob|do(c|p)o|ds(12|\\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\\-|_)|g1 u|g560|gene|gf\\-5|g\\-mo|go(\\.w|od)|gr(ad|un)|haie|hcit|hd\\-(m|p|t)|hei\\-|hi(pt|ta)|hp( i|ip)|hs\\-c|ht(c(\\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\\-(20|go|ma)|i230|iac( |\\-|\\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\\/)|klon|kpt |kwc\\-|kyo(c|k)|le(no|xi)|lg( g|\\/(k|l|u)|50|54|\\-[a-w])|libw|lynx|m1\\-w|m3ga|m50\\/|ma(te|ui|xo)|mc(01|21|ca)|m\\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\\-2|po(ck|rt|se)|prox|psio|pt\\-g|qa\\-a|qc(07|12|21|32|60|\\-[2-7]|i\\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\\-|oo|p\\-)|sdk\\/|se(c(\\-|0|1)|47|mc|nd|ri)|sgh\\-|shar|sie(\\-|m)|sk\\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\\-|v\\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\\-|tdg\\-|tel(i|m)|tim\\-|t\\-mo|to(pl|sh)|ts(70|m\\-|m3|m5)|tx\\-9|up(\\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\\-|your|zeto|zte\\-/i.test(a.substr(0, 4))) check = true;\n\t})(navigator.userAgent || navigator.vendor || window.opera);\n\treturn check;\n};\n\n\n/**\n * Fix shortcut. Mac use Command, others use Ctrl.\n */\nfunction fixShortcut(name) {\n\tif(isMac) {\n\t\tname = name.replace(\"Ctrl\", \"Cmd\");\n\t} else {\n\t\tname = name.replace(\"Cmd\", \"Ctrl\");\n\t}\n\treturn name;\n}\n\n\n/**\n * Create icon element for toolbar.\n */\nfunction createIcon(options, enableTooltips) {\n\toptions = options || {};\n\tvar el = document.createElement(\"a\");\n\tenableTooltips = (enableTooltips == undefined) ? true : enableTooltips;\n\n\tif(options.title && enableTooltips) {\n\t\tel.title = options.title;\n\n\t\tif(isMac) {\n\t\t\tel.title = el.title.replace(\"Ctrl\", \"⌘\");\n\t\t\tel.title = el.title.replace(\"Alt\", \"⌥\");\n\t\t}\n\t}\n\n\tel.tabIndex = -1;\n\tel.className = options.className;\n\treturn el;\n}\n\nfunction createSep() {\n\tvar el = document.createElement(\"i\");\n\tel.className = \"separator\";\n\tel.innerHTML = \"|\";\n\treturn el;\n}\n\n\n/**\n * The state of CodeMirror at the given position.\n */\nfunction getState(cm, pos) {\n\tpos = pos || cm.getCursor(\"start\");\n\tvar stat = cm.getTokenAt(pos);\n\tif(!stat.type) return {};\n\n\tvar types = stat.type.split(\" \");\n\n\tvar ret = {},\n\t\tdata, text;\n\tfor(var i = 0; i < types.length; i++) {\n\t\tdata = types[i];\n\t\tif(data === \"strong\") {\n\t\t\tret.bold = true;\n\t\t} else if(data === \"variable-2\") {\n\t\t\ttext = cm.getLine(pos.line);\n\t\t\tif(/^\\s*\\d+\\.\\s/.test(text)) {\n\t\t\t\tret[\"ordered-list\"] = true;\n\t\t\t} else {\n\t\t\t\tret[\"unordered-list\"] = true;\n\t\t\t}\n\t\t} else if(data === \"atom\") {\n\t\t\tret.quote = true;\n\t\t} else if(data === \"em\") {\n\t\t\tret.italic = true;\n\t\t} else if(data === \"quote\") {\n\t\t\tret.quote = true;\n\t\t} else if(data === \"strikethrough\") {\n\t\t\tret.strikethrough = true;\n\t\t} else if(data === \"comment\") {\n\t\t\tret.code = true;\n\t\t}\n\t}\n\treturn ret;\n}\n\n\n// Saved overflow setting\nvar saved_overflow = \"\";\n\n/**\n * Toggle full screen of the editor.\n */\nfunction toggleFullScreen(editor) {\n\t// Set fullscreen\n\tvar cm = editor.codemirror;\n\tcm.setOption(\"fullScreen\", !cm.getOption(\"fullScreen\"));\n\n\n\t// Prevent scrolling on body during fullscreen active\n\tif(cm.getOption(\"fullScreen\")) {\n\t\tsaved_overflow = document.body.style.overflow;\n\t\tdocument.body.style.overflow = \"hidden\";\n\t} else {\n\t\tdocument.body.style.overflow = saved_overflow;\n\t}\n\n\n\t// Update toolbar class\n\tvar wrap = cm.getWrapperElement();\n\n\tif(!/fullscreen/.test(wrap.previousSibling.className)) {\n\t\twrap.previousSibling.className += \" fullscreen\";\n\t} else {\n\t\twrap.previousSibling.className = wrap.previousSibling.className.replace(/\\s*fullscreen\\b/, \"\");\n\t}\n\n\n\t// Update toolbar button\n\tvar toolbarButton = editor.toolbarElements.fullscreen;\n\n\tif(!/active/.test(toolbarButton.className)) {\n\t\ttoolbarButton.className += \" active\";\n\t} else {\n\t\ttoolbarButton.className = toolbarButton.className.replace(/\\s*active\\s*/g, \"\");\n\t}\n\n\n\t// Hide side by side if needed\n\tvar sidebyside = cm.getWrapperElement().nextSibling;\n\tif(/editor-preview-active-side/.test(sidebyside.className))\n\t\ttoggleSideBySide(editor);\n}\n\n\n/**\n * Action for toggling bold.\n */\nfunction toggleBold(editor) {\n\t_toggleBlock(editor, \"bold\", editor.options.blockStyles.bold);\n}\n\n\n/**\n * Action for toggling italic.\n */\nfunction toggleItalic(editor) {\n\t_toggleBlock(editor, \"italic\", editor.options.blockStyles.italic);\n}\n\n\n/**\n * Action for toggling strikethrough.\n */\nfunction toggleStrikethrough(editor) {\n\t_toggleBlock(editor, \"strikethrough\", \"~~\");\n}\n\n/**\n * Action for toggling code block.\n */\nfunction toggleCodeBlock(editor) {\n\t_toggleBlock(editor, \"code\", \"```\\r\\n\", \"\\r\\n```\");\n}\n\n/**\n * Action for toggling blockquote.\n */\nfunction toggleBlockquote(editor) {\n\tvar cm = editor.codemirror;\n\t_toggleLine(cm, \"quote\");\n}\n\n/**\n * Action for toggling heading size: normal -> h1 -> h2 -> h3 -> h4 -> h5 -> h6 -> normal\n */\nfunction toggleHeadingSmaller(editor) {\n\tvar cm = editor.codemirror;\n\t_toggleHeading(cm, \"smaller\");\n}\n\n/**\n * Action for toggling heading size: normal -> h6 -> h5 -> h4 -> h3 -> h2 -> h1 -> normal\n */\nfunction toggleHeadingBigger(editor) {\n\tvar cm = editor.codemirror;\n\t_toggleHeading(cm, \"bigger\");\n}\n\n/**\n * Action for toggling heading size 1\n */\nfunction toggleHeading1(editor) {\n\tvar cm = editor.codemirror;\n\t_toggleHeading(cm, undefined, 1);\n}\n\n/**\n * Action for toggling heading size 2\n */\nfunction toggleHeading2(editor) {\n\tvar cm = editor.codemirror;\n\t_toggleHeading(cm, undefined, 2);\n}\n\n/**\n * Action for toggling heading size 3\n */\nfunction toggleHeading3(editor) {\n\tvar cm = editor.codemirror;\n\t_toggleHeading(cm, undefined, 3);\n}\n\n\n/**\n * Action for toggling ul.\n */\nfunction toggleUnorderedList(editor) {\n\tvar cm = editor.codemirror;\n\t_toggleLine(cm, \"unordered-list\");\n}\n\n\n/**\n * Action for toggling ol.\n */\nfunction toggleOrderedList(editor) {\n\tvar cm = editor.codemirror;\n\t_toggleLine(cm, \"ordered-list\");\n}\n\n/**\n * Action for drawing a link.\n */\nfunction drawLink(editor) {\n\tvar cm = editor.codemirror;\n\tvar stat = getState(cm);\n\tvar options = editor.options;\n\t_replaceSelection(cm, stat.link, options.insertTexts.link);\n}\n\n/**\n * Action for drawing an img.\n */\nfunction drawImage(editor) {\n\tvar cm = editor.codemirror;\n\tvar stat = getState(cm);\n\tvar options = editor.options;\n\t_replaceSelection(cm, stat.image, options.insertTexts.image);\n}\n\n/**\n * Action for drawing a table.\n */\nfunction drawTable(editor) {\n\tvar cm = editor.codemirror;\n\tvar stat = getState(cm);\n\tvar options = editor.options;\n\t_replaceSelection(cm, stat.table, options.insertTexts.table);\n}\n\n/**\n * Action for drawing a horizontal rule.\n */\nfunction drawHorizontalRule(editor) {\n\tvar cm = editor.codemirror;\n\tvar stat = getState(cm);\n\tvar options = editor.options;\n\t_replaceSelection(cm, stat.image, options.insertTexts.horizontalRule);\n}\n\n\n/**\n * Undo action.\n */\nfunction undo(editor) {\n\tvar cm = editor.codemirror;\n\tcm.undo();\n\tcm.focus();\n}\n\n\n/**\n * Redo action.\n */\nfunction redo(editor) {\n\tvar cm = editor.codemirror;\n\tcm.redo();\n\tcm.focus();\n}\n\n\n/**\n * Toggle side by side preview\n */\nfunction toggleSideBySide(editor) {\n\tvar cm = editor.codemirror;\n\tvar wrapper = cm.getWrapperElement();\n\tvar preview = wrapper.nextSibling;\n\tvar toolbarButton = editor.toolbarElements[\"side-by-side\"];\n\n\tif(/editor-preview-active-side/.test(preview.className)) {\n\t\tpreview.className = preview.className.replace(\n\t\t\t/\\s*editor-preview-active-side\\s*/g, \"\"\n\t\t);\n\t\ttoolbarButton.className = toolbarButton.className.replace(/\\s*active\\s*/g, \"\");\n\t\twrapper.className = wrapper.className.replace(/\\s*CodeMirror-sided\\s*/g, \" \");\n\t} else {\n\t\t// When the preview button is clicked for the first time,\n\t\t// give some time for the transition from editor.css to fire and the view to slide from right to left,\n\t\t// instead of just appearing.\n\t\tsetTimeout(function() {\n\t\t\tif(!cm.getOption(\"fullScreen\"))\n\t\t\t\ttoggleFullScreen(editor);\n\t\t\tpreview.className += \" editor-preview-active-side\";\n\t\t}, 1);\n\t\ttoolbarButton.className += \" active\";\n\t\twrapper.className += \" CodeMirror-sided\";\n\t}\n\n\t// Hide normal preview if active\n\tvar previewNormal = wrapper.lastChild;\n\tif(/editor-preview-active/.test(previewNormal.className)) {\n\t\tpreviewNormal.className = previewNormal.className.replace(\n\t\t\t/\\s*editor-preview-active\\s*/g, \"\"\n\t\t);\n\t\tvar toolbar = editor.toolbarElements.preview;\n\t\tvar toolbar_div = wrapper.previousSibling;\n\t\ttoolbar.className = toolbar.className.replace(/\\s*active\\s*/g, \"\");\n\t\ttoolbar_div.className = toolbar_div.className.replace(/\\s*disabled-for-preview*/g, \"\");\n\t}\n\n\t// Start preview with the current text\n\tpreview.innerHTML = editor.options.previewRender(editor.value(), preview);\n\n\t// Updates preview\n\tcm.on(\"update\", function() {\n\t\tpreview.innerHTML = editor.options.previewRender(editor.value(), preview);\n\t});\n}\n\n\n/**\n * Preview action.\n */\nfunction togglePreview(editor) {\n\tvar cm = editor.codemirror;\n\tvar wrapper = cm.getWrapperElement();\n\tvar toolbar_div = wrapper.previousSibling;\n\tvar toolbar = editor.toolbarElements.preview;\n\tvar preview = wrapper.lastChild;\n\tif(!preview || !/editor-preview/.test(preview.className)) {\n\t\tpreview = document.createElement(\"div\");\n\t\tpreview.className = \"editor-preview\";\n\t\twrapper.appendChild(preview);\n\t}\n\tif(/editor-preview-active/.test(preview.className)) {\n\t\tpreview.className = preview.className.replace(\n\t\t\t/\\s*editor-preview-active\\s*/g, \"\"\n\t\t);\n\t\ttoolbar.className = toolbar.className.replace(/\\s*active\\s*/g, \"\");\n\t\ttoolbar_div.className = toolbar_div.className.replace(/\\s*disabled-for-preview*/g, \"\");\n\t} else {\n\t\t// When the preview button is clicked for the first time,\n\t\t// give some time for the transition from editor.css to fire and the view to slide from right to left,\n\t\t// instead of just appearing.\n\t\tsetTimeout(function() {\n\t\t\tpreview.className += \" editor-preview-active\";\n\t\t}, 1);\n\t\ttoolbar.className += \" active\";\n\t\ttoolbar_div.className += \" disabled-for-preview\";\n\t}\n\tpreview.innerHTML = editor.options.previewRender(editor.value(), preview);\n\n\t// Turn off side by side if needed\n\tvar sidebyside = cm.getWrapperElement().nextSibling;\n\tif(/editor-preview-active-side/.test(sidebyside.className))\n\t\ttoggleSideBySide(editor);\n}\n\nfunction _replaceSelection(cm, active, startEnd) {\n\tif(/editor-preview-active/.test(cm.getWrapperElement().lastChild.className))\n\t\treturn;\n\n\tvar text;\n\tvar start = startEnd[0];\n\tvar end = startEnd[1];\n\tvar startPoint = cm.getCursor(\"start\");\n\tvar endPoint = cm.getCursor(\"end\");\n\tif(active) {\n\t\ttext = cm.getLine(startPoint.line);\n\t\tstart = text.slice(0, startPoint.ch);\n\t\tend = text.slice(startPoint.ch);\n\t\tcm.replaceRange(start + end, {\n\t\t\tline: startPoint.line,\n\t\t\tch: 0\n\t\t});\n\t} else {\n\t\ttext = cm.getSelection();\n\t\tcm.replaceSelection(start + text + end);\n\n\t\tstartPoint.ch += start.length;\n\t\tif(startPoint !== endPoint) {\n\t\t\tendPoint.ch += start.length;\n\t\t}\n\t}\n\tcm.setSelection(startPoint, endPoint);\n\tcm.focus();\n}\n\n\nfunction _toggleHeading(cm, direction, size) {\n\tif(/editor-preview-active/.test(cm.getWrapperElement().lastChild.className))\n\t\treturn;\n\n\tvar startPoint = cm.getCursor(\"start\");\n\tvar endPoint = cm.getCursor(\"end\");\n\tfor(var i = startPoint.line; i <= endPoint.line; i++) {\n\t\t(function(i) {\n\t\t\tvar text = cm.getLine(i);\n\t\t\tvar currHeadingLevel = text.search(/[^#]/);\n\n\t\t\tif(direction !== undefined) {\n\t\t\t\tif(currHeadingLevel <= 0) {\n\t\t\t\t\tif(direction == \"bigger\") {\n\t\t\t\t\t\ttext = \"###### \" + text;\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttext = \"# \" + text;\n\t\t\t\t\t}\n\t\t\t\t} else if(currHeadingLevel == 6 && direction == \"smaller\") {\n\t\t\t\t\ttext = text.substr(7);\n\t\t\t\t} else if(currHeadingLevel == 1 && direction == \"bigger\") {\n\t\t\t\t\ttext = text.substr(2);\n\t\t\t\t} else {\n\t\t\t\t\tif(direction == \"bigger\") {\n\t\t\t\t\t\ttext = text.substr(1);\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttext = \"#\" + text;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tif(size == 1) {\n\t\t\t\t\tif(currHeadingLevel <= 0) {\n\t\t\t\t\t\ttext = \"# \" + text;\n\t\t\t\t\t} else if(currHeadingLevel == size) {\n\t\t\t\t\t\ttext = text.substr(currHeadingLevel + 1);\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttext = \"# \" + text.substr(currHeadingLevel + 1);\n\t\t\t\t\t}\n\t\t\t\t} else if(size == 2) {\n\t\t\t\t\tif(currHeadingLevel <= 0) {\n\t\t\t\t\t\ttext = \"## \" + text;\n\t\t\t\t\t} else if(currHeadingLevel == size) {\n\t\t\t\t\t\ttext = text.substr(currHeadingLevel + 1);\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttext = \"## \" + text.substr(currHeadingLevel + 1);\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tif(currHeadingLevel <= 0) {\n\t\t\t\t\t\ttext = \"### \" + text;\n\t\t\t\t\t} else if(currHeadingLevel == size) {\n\t\t\t\t\t\ttext = text.substr(currHeadingLevel + 1);\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttext = \"### \" + text.substr(currHeadingLevel + 1);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tcm.replaceRange(text, {\n\t\t\t\tline: i,\n\t\t\t\tch: 0\n\t\t\t}, {\n\t\t\t\tline: i,\n\t\t\t\tch: 99999999999999\n\t\t\t});\n\t\t})(i);\n\t}\n\tcm.focus();\n}\n\n\nfunction _toggleLine(cm, name) {\n\tif(/editor-preview-active/.test(cm.getWrapperElement().lastChild.className))\n\t\treturn;\n\n\tvar stat = getState(cm);\n\tvar startPoint = cm.getCursor(\"start\");\n\tvar endPoint = cm.getCursor(\"end\");\n\tvar repl = {\n\t\t\"quote\": /^(\\s*)\\>\\s+/,\n\t\t\"unordered-list\": /^(\\s*)(\\*|\\-|\\+)\\s+/,\n\t\t\"ordered-list\": /^(\\s*)\\d+\\.\\s+/\n\t};\n\tvar map = {\n\t\t\"quote\": \"> \",\n\t\t\"unordered-list\": \"* \",\n\t\t\"ordered-list\": \"1. \"\n\t};\n\tfor(var i = startPoint.line; i <= endPoint.line; i++) {\n\t\t(function(i) {\n\t\t\tvar text = cm.getLine(i);\n\t\t\tif(stat[name]) {\n\t\t\t\ttext = text.replace(repl[name], \"$1\");\n\t\t\t} else {\n\t\t\t\ttext = map[name] + text;\n\t\t\t}\n\t\t\tcm.replaceRange(text, {\n\t\t\t\tline: i,\n\t\t\t\tch: 0\n\t\t\t}, {\n\t\t\t\tline: i,\n\t\t\t\tch: 99999999999999\n\t\t\t});\n\t\t})(i);\n\t}\n\tcm.focus();\n}\n\nfunction _toggleBlock(editor, type, start_chars, end_chars) {\n\tif(/editor-preview-active/.test(editor.codemirror.getWrapperElement().lastChild.className))\n\t\treturn;\n\n\tend_chars = (typeof end_chars === \"undefined\") ? start_chars : end_chars;\n\tvar cm = editor.codemirror;\n\tvar stat = getState(cm);\n\n\tvar text;\n\tvar start = start_chars;\n\tvar end = end_chars;\n\n\tvar startPoint = cm.getCursor(\"start\");\n\tvar endPoint = cm.getCursor(\"end\");\n\n\tif(stat[type]) {\n\t\ttext = cm.getLine(startPoint.line);\n\t\tstart = text.slice(0, startPoint.ch);\n\t\tend = text.slice(startPoint.ch);\n\t\tif(type == \"bold\") {\n\t\t\tstart = start.replace(/(\\*\\*|__)(?![\\s\\S]*(\\*\\*|__))/, \"\");\n\t\t\tend = end.replace(/(\\*\\*|__)/, \"\");\n\t\t} else if(type == \"italic\") {\n\t\t\tstart = start.replace(/(\\*|_)(?![\\s\\S]*(\\*|_))/, \"\");\n\t\t\tend = end.replace(/(\\*|_)/, \"\");\n\t\t} else if(type == \"strikethrough\") {\n\t\t\tstart = start.replace(/(\\*\\*|~~)(?![\\s\\S]*(\\*\\*|~~))/, \"\");\n\t\t\tend = end.replace(/(\\*\\*|~~)/, \"\");\n\t\t}\n\t\tcm.replaceRange(start + end, {\n\t\t\tline: startPoint.line,\n\t\t\tch: 0\n\t\t}, {\n\t\t\tline: startPoint.line,\n\t\t\tch: 99999999999999\n\t\t});\n\n\t\tif(type == \"bold\" || type == \"strikethrough\") {\n\t\t\tstartPoint.ch -= 2;\n\t\t\tif(startPoint !== endPoint) {\n\t\t\t\tendPoint.ch -= 2;\n\t\t\t}\n\t\t} else if(type == \"italic\") {\n\t\t\tstartPoint.ch -= 1;\n\t\t\tif(startPoint !== endPoint) {\n\t\t\t\tendPoint.ch -= 1;\n\t\t\t}\n\t\t}\n\t} else {\n\t\ttext = cm.getSelection();\n\t\tif(type == \"bold\") {\n\t\t\ttext = text.split(\"**\").join(\"\");\n\t\t\ttext = text.split(\"__\").join(\"\");\n\t\t} else if(type == \"italic\") {\n\t\t\ttext = text.split(\"*\").join(\"\");\n\t\t\ttext = text.split(\"_\").join(\"\");\n\t\t} else if(type == \"strikethrough\") {\n\t\t\ttext = text.split(\"~~\").join(\"\");\n\t\t}\n\t\tcm.replaceSelection(start + text + end);\n\n\t\tstartPoint.ch += start_chars.length;\n\t\tendPoint.ch = startPoint.ch + text.length;\n\t}\n\n\tcm.setSelection(startPoint, endPoint);\n\tcm.focus();\n}\n\n// Merge the properties of one object into another.\nfunction _mergeProperties(target, source) {\n\tfor(var property in source) {\n\t\tif(source.hasOwnProperty(property)) {\n\t\t\tif(source[property] instanceof Array) {\n\t\t\t\ttarget[property] = source[property].concat(target[property] instanceof Array ? target[property] : []);\n\t\t\t} else if(\n\t\t\t\tsource[property] !== null &&\n\t\t\t\ttypeof source[property] === \"object\" &&\n\t\t\t\tsource[property].constructor === Object\n\t\t\t) {\n\t\t\t\ttarget[property] = _mergeProperties(target[property] || {}, source[property]);\n\t\t\t} else {\n\t\t\t\ttarget[property] = source[property];\n\t\t\t}\n\t\t}\n\t}\n\n\treturn target;\n}\n\n// Merge an arbitrary number of objects into one.\nfunction extend(target) {\n\tfor(var i = 1; i < arguments.length; i++) {\n\t\ttarget = _mergeProperties(target, arguments[i]);\n\t}\n\n\treturn target;\n}\n\n/* The right word count in respect for CJK. */\nfunction wordCount(data) {\n\tvar pattern = /[a-zA-Z0-9_\\u0392-\\u03c9]+|[\\u4E00-\\u9FFF\\u3400-\\u4dbf\\uf900-\\ufaff\\u3040-\\u309f\\uac00-\\ud7af]+/g;\n\tvar m = data.match(pattern);\n\tvar count = 0;\n\tif(m === null) return count;\n\tfor(var i = 0; i < m.length; i++) {\n\t\tif(m[i].charCodeAt(0) >= 0x4E00) {\n\t\t\tcount += m[i].length;\n\t\t} else {\n\t\t\tcount += 1;\n\t\t}\n\t}\n\treturn count;\n}\n\nvar toolbarBuiltInButtons = {\n\t\"bold\": {\n\t\tname: \"bold\",\n\t\taction: toggleBold,\n\t\tclassName: \"fa fa-bold\",\n\t\ttitle: \"Bold (Ctrl+B)\",\n\t\tdefault: true\n\t},\n\t\"italic\": {\n\t\tname: \"italic\",\n\t\taction: toggleItalic,\n\t\tclassName: \"fa fa-italic\",\n\t\ttitle: \"Italic (Ctrl+I)\",\n\t\tdefault: true\n\t},\n\t\"strikethrough\": {\n\t\tname: \"strikethrough\",\n\t\taction: toggleStrikethrough,\n\t\tclassName: \"fa fa-strikethrough\",\n\t\ttitle: \"Strikethrough\"\n\t},\n\t\"heading\": {\n\t\tname: \"heading\",\n\t\taction: toggleHeadingSmaller,\n\t\tclassName: \"fa fa-header\",\n\t\ttitle: \"Heading (Ctrl+H)\",\n\t\tdefault: true\n\t},\n\t\"heading-smaller\": {\n\t\tname: \"heading-smaller\",\n\t\taction: toggleHeadingSmaller,\n\t\tclassName: \"fa fa-header fa-header-x fa-header-smaller\",\n\t\ttitle: \"Smaller Heading (Ctrl+H)\"\n\t},\n\t\"heading-bigger\": {\n\t\tname: \"heading-bigger\",\n\t\taction: toggleHeadingBigger,\n\t\tclassName: \"fa fa-header fa-header-x fa-header-bigger\",\n\t\ttitle: \"Bigger Heading (Shift+Ctrl+H)\"\n\t},\n\t\"heading-1\": {\n\t\tname: \"heading-1\",\n\t\taction: toggleHeading1,\n\t\tclassName: \"fa fa-header fa-header-x fa-header-1\",\n\t\ttitle: \"Big Heading\"\n\t},\n\t\"heading-2\": {\n\t\tname: \"heading-2\",\n\t\taction: toggleHeading2,\n\t\tclassName: \"fa fa-header fa-header-x fa-header-2\",\n\t\ttitle: \"Medium Heading\"\n\t},\n\t\"heading-3\": {\n\t\tname: \"heading-3\",\n\t\taction: toggleHeading3,\n\t\tclassName: \"fa fa-header fa-header-x fa-header-3\",\n\t\ttitle: \"Small Heading\"\n\t},\n\t\"separator-1\": {\n\t\tname: \"separator-1\"\n\t},\n\t\"code\": {\n\t\tname: \"code\",\n\t\taction: toggleCodeBlock,\n\t\tclassName: \"fa fa-code\",\n\t\ttitle: \"Code (Ctrl+Alt+C)\"\n\t},\n\t\"quote\": {\n\t\tname: \"quote\",\n\t\taction: toggleBlockquote,\n\t\tclassName: \"fa fa-quote-left\",\n\t\ttitle: \"Quote (Ctrl+')\",\n\t\tdefault: true\n\t},\n\t\"unordered-list\": {\n\t\tname: \"unordered-list\",\n\t\taction: toggleUnorderedList,\n\t\tclassName: \"fa fa-list-ul\",\n\t\ttitle: \"Generic List (Ctrl+L)\",\n\t\tdefault: true\n\t},\n\t\"ordered-list\": {\n\t\tname: \"ordered-list\",\n\t\taction: toggleOrderedList,\n\t\tclassName: \"fa fa-list-ol\",\n\t\ttitle: \"Numbered List (Ctrl+Alt+L)\",\n\t\tdefault: true\n\t},\n\t\"separator-2\": {\n\t\tname: \"separator-2\"\n\t},\n\t\"link\": {\n\t\tname: \"link\",\n\t\taction: drawLink,\n\t\tclassName: \"fa fa-link\",\n\t\ttitle: \"Create Link (Ctrl+K)\",\n\t\tdefault: true\n\t},\n\t\"image\": {\n\t\tname: \"image\",\n\t\taction: drawImage,\n\t\tclassName: \"fa fa-picture-o\",\n\t\ttitle: \"Insert Image (Ctrl+Alt+I)\",\n\t\tdefault: true\n\t},\n\t\"table\": {\n\t\tname: \"table\",\n\t\taction: drawTable,\n\t\tclassName: \"fa fa-table\",\n\t\ttitle: \"Insert Table\"\n\t},\n\t\"horizontal-rule\": {\n\t\tname: \"horizontal-rule\",\n\t\taction: drawHorizontalRule,\n\t\tclassName: \"fa fa-minus\",\n\t\ttitle: \"Insert Horizontal Line\"\n\t},\n\t\"separator-3\": {\n\t\tname: \"separator-3\"\n\t},\n\t\"preview\": {\n\t\tname: \"preview\",\n\t\taction: togglePreview,\n\t\tclassName: \"fa fa-eye no-disable\",\n\t\ttitle: \"Toggle Preview (Ctrl+P)\",\n\t\tdefault: true\n\t},\n\t\"side-by-side\": {\n\t\tname: \"side-by-side\",\n\t\taction: toggleSideBySide,\n\t\tclassName: \"fa fa-columns no-disable no-mobile\",\n\t\ttitle: \"Toggle Side by Side (F9)\",\n\t\tdefault: true\n\t},\n\t\"fullscreen\": {\n\t\tname: \"fullscreen\",\n\t\taction: toggleFullScreen,\n\t\tclassName: \"fa fa-arrows-alt no-disable no-mobile\",\n\t\ttitle: \"Toggle Fullscreen (F11)\",\n\t\tdefault: true\n\t},\n\t\"guide\": {\n\t\tname: \"guide\",\n\t\taction: \"http://nextstepwebs.github.io/simplemde-markdown-editor/markdown-guide\",\n\t\tclassName: \"fa fa-question-circle\",\n\t\ttitle: \"Markdown Guide\",\n\t\tdefault: true\n\t}\n};\n\nvar insertTexts = {\n\tlink: [\"[\", \"](http://)\"],\n\timage: [\"![](http://\", \")\"],\n\ttable: [\"\", \"\\n\\n| Column 1 | Column 2 | Column 3 |\\n| -------- | -------- | -------- |\\n| Text     | Text      | Text     |\\n\\n\"],\n\thorizontalRule: [\"\", \"\\n\\n-----\\n\\n\"]\n};\n\nvar blockStyles = {\n\t\"bold\": \"**\",\n\t\"italic\": \"*\"\n};\n\n/**\n * Interface of SimpleMDE.\n */\nfunction SimpleMDE(options) {\n\t// Handle options parameter\n\toptions = options || {};\n\n\n\t// Used later to refer to it\"s parent\n\toptions.parent = this;\n\n\n\t// Check if Font Awesome needs to be auto downloaded\n\tvar autoDownloadFA = true;\n\n\tif(options.autoDownloadFontAwesome === false) {\n\t\tautoDownloadFA = false;\n\t}\n\n\tif(options.autoDownloadFontAwesome !== true) {\n\t\tvar styleSheets = document.styleSheets;\n\t\tfor(var i = 0; i < styleSheets.length; i++) {\n\t\t\tif(!styleSheets[i].href)\n\t\t\t\tcontinue;\n\n\t\t\tif(styleSheets[i].href.indexOf(\"//maxcdn.bootstrapcdn.com/font-awesome/\") > -1) {\n\t\t\t\tautoDownloadFA = false;\n\t\t\t}\n\t\t}\n\t}\n\n\tif(autoDownloadFA) {\n\t\tvar link = document.createElement(\"link\");\n\t\tlink.rel = \"stylesheet\";\n\t\tlink.href = \"https://maxcdn.bootstrapcdn.com/font-awesome/latest/css/font-awesome.min.css\";\n\t\tdocument.getElementsByTagName(\"head\")[0].appendChild(link);\n\t}\n\n\n\t// Find the textarea to use\n\tif(options.element) {\n\t\tthis.element = options.element;\n\t} else if(options.element === null) {\n\t\t// This means that the element option was specified, but no element was found\n\t\tconsole.log(\"SimpleMDE: Error. No element was found.\");\n\t\treturn;\n\t}\n\n\n\t// Handle toolbar\n\tif(options.toolbar === undefined) {\n\t\t// Initialize\n\t\toptions.toolbar = [];\n\n\n\t\t// Loop over the built in buttons, to get the preferred order\n\t\tfor(var key in toolbarBuiltInButtons) {\n\t\t\tif(toolbarBuiltInButtons.hasOwnProperty(key)) {\n\t\t\t\tif(key.indexOf(\"separator-\") != -1) {\n\t\t\t\t\toptions.toolbar.push(\"|\");\n\t\t\t\t}\n\n\t\t\t\tif(toolbarBuiltInButtons[key].default === true || (options.showIcons && options.showIcons.constructor === Array && options.showIcons.indexOf(key) != -1)) {\n\t\t\t\t\toptions.toolbar.push(key);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\n\t// Handle status bar\n\tif(!options.hasOwnProperty(\"status\")) {\n\t\toptions.status = [\"autosave\", \"lines\", \"words\", \"cursor\"];\n\t}\n\n\n\t// Add default preview rendering function\n\tif(!options.previewRender) {\n\t\toptions.previewRender = function(plainText) {\n\t\t\t// Note: \"this\" refers to the options object\n\t\t\treturn this.parent.markdown(plainText);\n\t\t};\n\t}\n\n\n\t// Set default options for parsing config\n\toptions.parsingConfig = options.parsingConfig || {};\n\n\n\t// Merging the insertTexts, with the given options\n\toptions.insertTexts = extend({}, insertTexts, options.insertTexts || {});\n\n\n\t// Merging the blockStyles, with the given options\n\toptions.blockStyles = extend({}, blockStyles, options.blockStyles || {});\n\n\n\t// Change unique_id to uniqueId for backwards compatibility\n\tif(options.autosave != undefined && options.autosave.unique_id != undefined && options.autosave.unique_id != \"\")\n\t\toptions.autosave.uniqueId = options.autosave.unique_id;\n\n\n\t// Update this options\n\tthis.options = options;\n\n\n\t// Auto render\n\tthis.render();\n\n\n\t// The codemirror component is only available after rendering\n\t// so, the setter for the initialValue can only run after\n\t// the element has been rendered\n\tif(options.initialValue && (!this.options.autosave || this.options.autosave.foundSavedValue !== true)) {\n\t\tthis.value(options.initialValue);\n\t}\n}\n\n/**\n * Default markdown render.\n */\nSimpleMDE.prototype.markdown = function(text) {\n\tif(marked) {\n\t\t// Initialize\n\t\tvar markedOptions = {};\n\n\n\t\t// Update options\n\t\tif(this.options && this.options.renderingConfig && this.options.renderingConfig.singleLineBreaks !== false) {\n\t\t\tmarkedOptions.breaks = true;\n\t\t}\n\n\t\tif(this.options && this.options.renderingConfig && this.options.renderingConfig.codeSyntaxHighlighting === true && window.hljs) {\n\t\t\tmarkedOptions.highlight = function(code) {\n\t\t\t\treturn window.hljs.highlightAuto(code).value;\n\t\t\t};\n\t\t}\n\n\n\t\t// Set options\n\t\tmarked.setOptions(markedOptions);\n\n\n\t\t// Return\n\t\treturn marked(text);\n\t}\n};\n\n/**\n * Render editor to the given element.\n */\nSimpleMDE.prototype.render = function(el) {\n\tif(!el) {\n\t\tel = this.element || document.getElementsByTagName(\"textarea\")[0];\n\t}\n\n\tif(this._rendered && this._rendered === el) {\n\t\t// Already rendered.\n\t\treturn;\n\t}\n\n\tthis.element = el;\n\tvar options = this.options;\n\n\tvar self = this;\n\tvar keyMaps = {};\n\n\tfor(var key in shortcuts) {\n\t\t(function(key) {\n\t\t\tkeyMaps[fixShortcut(key)] = function() {\n\t\t\t\tshortcuts[key](self);\n\t\t\t};\n\t\t})(key);\n\t}\n\n\tkeyMaps[\"Enter\"] = \"newlineAndIndentContinueMarkdownList\";\n\tkeyMaps[\"Tab\"] = \"tabAndIndentMarkdownList\";\n\tkeyMaps[\"Shift-Tab\"] = \"shiftTabAndUnindentMarkdownList\";\n\tkeyMaps[\"F11\"] = function() {\n\t\ttoggleFullScreen(self);\n\t};\n\tkeyMaps[\"F9\"] = function() {\n\t\ttoggleSideBySide(self);\n\t};\n\tkeyMaps[\"Esc\"] = function(cm) {\n\t\tif(cm.getOption(\"fullScreen\")) toggleFullScreen(self);\n\t};\n\n\tdocument.addEventListener(\"keydown\", function(e) {\n\t\te = e || window.event;\n\n\t\tif(e.keyCode == 27) {\n\t\t\tif(self.codemirror.getOption(\"fullScreen\")) toggleFullScreen(self);\n\t\t}\n\t}, false);\n\n\tvar mode, backdrop;\n\tif(options.spellChecker !== false) {\n\t\tmode = \"spell-checker\";\n\t\tbackdrop = options.parsingConfig;\n\t\tbackdrop.name = \"gfm\";\n\t\tbackdrop.gitHubSpice = false;\n\t} else {\n\t\tmode = options.parsingConfig;\n\t\tmode.name = \"gfm\";\n\t\tmode.gitHubSpice = false;\n\t}\n\n\tthis.codemirror = CodeMirror.fromTextArea(el, {\n\t\tmode: mode,\n\t\tbackdrop: backdrop,\n\t\ttheme: \"paper\",\n\t\ttabSize: (options.tabSize != undefined) ? options.tabSize : 2,\n\t\tindentUnit: (options.tabSize != undefined) ? options.tabSize : 2,\n\t\tindentWithTabs: (options.indentWithTabs === false) ? false : true,\n\t\tlineNumbers: false,\n\t\tautofocus: (options.autofocus === true) ? true : false,\n\t\textraKeys: keyMaps,\n\t\tlineWrapping: (options.lineWrapping === false) ? false : true,\n\t\tallowDropFileTypes: [\"text/plain\"]\n\t});\n\n\tif(options.toolbar !== false) {\n\t\tthis.createToolbar();\n\t}\n\tif(options.status !== false) {\n\t\tthis.createStatusbar();\n\t}\n\tif(options.autosave != undefined && options.autosave.enabled === true) {\n\t\tthis.autosave();\n\t}\n\n\tthis.createSideBySide();\n\n\tthis._rendered = this.element;\n};\n\nSimpleMDE.prototype.autosave = function() {\n\tif(localStorage) {\n\t\tvar simplemde = this;\n\n\t\tif(this.options.autosave.uniqueId == undefined || this.options.autosave.uniqueId == \"\") {\n\t\t\tconsole.log(\"SimpleMDE: You must set a uniqueId to use the autosave feature\");\n\t\t\treturn;\n\t\t}\n\n\t\tif(simplemde.element.form != null && simplemde.element.form != undefined) {\n\t\t\tsimplemde.element.form.addEventListener(\"submit\", function() {\n\t\t\t\tlocalStorage.removeItem(\"smde_\" + simplemde.options.autosave.uniqueId);\n\t\t\t});\n\t\t}\n\n\t\tif(this.options.autosave.loaded !== true) {\n\t\t\tif(typeof localStorage.getItem(\"smde_\" + this.options.autosave.uniqueId) == \"string\" && localStorage.getItem(\"smde_\" + this.options.autosave.uniqueId) != \"\") {\n\t\t\t\tthis.codemirror.setValue(localStorage.getItem(\"smde_\" + this.options.autosave.uniqueId));\n\t\t\t\tthis.options.autosave.foundSavedValue = true;\n\t\t\t}\n\n\t\t\tthis.options.autosave.loaded = true;\n\t\t}\n\n\t\tlocalStorage.setItem(\"smde_\" + this.options.autosave.uniqueId, simplemde.value());\n\n\t\tvar el = document.getElementById(\"autosaved\");\n\t\tif(el != null && el != undefined && el != \"\") {\n\t\t\tvar d = new Date();\n\t\t\tvar hh = d.getHours();\n\t\t\tvar m = d.getMinutes();\n\t\t\tvar dd = \"am\";\n\t\t\tvar h = hh;\n\t\t\tif(h >= 12) {\n\t\t\t\th = hh - 12;\n\t\t\t\tdd = \"pm\";\n\t\t\t}\n\t\t\tif(h == 0) {\n\t\t\t\th = 12;\n\t\t\t}\n\t\t\tm = m < 10 ? \"0\" + m : m;\n\n\t\t\tel.innerHTML = \"Autosaved: \" + h + \":\" + m + \" \" + dd;\n\t\t}\n\n\t\tsetTimeout(function() {\n\t\t\tsimplemde.autosave();\n\t\t}, this.options.autosave.delay || 10000);\n\t} else {\n\t\tconsole.log(\"SimpleMDE: localStorage not available, cannot autosave\");\n\t}\n};\n\nSimpleMDE.prototype.clearAutosavedValue = function() {\n\tif(localStorage) {\n\t\tif(this.options.autosave.uniqueId == undefined || this.options.autosave.uniqueId == \"\") {\n\t\t\tconsole.log(\"SimpleMDE: You must set a uniqueId to use the autosave feature\");\n\t\t\treturn;\n\t\t}\n\n\t\tlocalStorage.removeItem(\"smde_\" + this.options.autosave.uniqueId);\n\t} else {\n\t\tconsole.log(\"SimpleMDE: localStorage not available, cannot autosave\");\n\t}\n};\n\nSimpleMDE.prototype.createSideBySide = function() {\n\tvar cm = this.codemirror;\n\tvar wrapper = cm.getWrapperElement();\n\tvar preview = wrapper.nextSibling;\n\n\tif(!preview || !/editor-preview-side/.test(preview.className)) {\n\t\tpreview = document.createElement(\"div\");\n\t\tpreview.className = \"editor-preview-side\";\n\t\twrapper.parentNode.insertBefore(preview, wrapper.nextSibling);\n\t}\n\n\t// Syncs scroll  editor -> preview\n\tvar cScroll = false;\n\tvar pScroll = false;\n\tcm.on(\"scroll\", function(v) {\n\t\tif(cScroll) {\n\t\t\tcScroll = false;\n\t\t\treturn;\n\t\t}\n\t\tpScroll = true;\n\t\tvar height = v.getScrollInfo().height - v.getScrollInfo().clientHeight;\n\t\tvar ratio = parseFloat(v.getScrollInfo().top) / height;\n\t\tvar move = (preview.scrollHeight - preview.clientHeight) * ratio;\n\t\tpreview.scrollTop = move;\n\t});\n\n\t// Syncs scroll  preview -> editor\n\tpreview.onscroll = function() {\n\t\tif(pScroll) {\n\t\t\tpScroll = false;\n\t\t\treturn;\n\t\t}\n\t\tcScroll = true;\n\t\tvar height = preview.scrollHeight - preview.clientHeight;\n\t\tvar ratio = parseFloat(preview.scrollTop) / height;\n\t\tvar move = (cm.getScrollInfo().height - cm.getScrollInfo().clientHeight) * ratio;\n\t\tcm.scrollTo(0, move);\n\t};\n\treturn true;\n};\n\nSimpleMDE.prototype.createToolbar = function(items) {\n\titems = items || this.options.toolbar;\n\n\tif(!items || items.length === 0) {\n\t\treturn;\n\t}\n\tvar i;\n\tfor(i = 0; i < items.length; i++) {\n\t\tif(toolbarBuiltInButtons[items[i]] != undefined) {\n\t\t\titems[i] = toolbarBuiltInButtons[items[i]];\n\t\t}\n\t}\n\n\tvar bar = document.createElement(\"div\");\n\tbar.className = \"editor-toolbar\";\n\n\tvar self = this;\n\n\tvar toolbar_data = {};\n\tself.toolbar = items;\n\n\tfor(i = 0; i < items.length; i++) {\n\t\tif(items[i].name == \"guide\" && self.options.toolbarGuideIcon === false)\n\t\t\tcontinue;\n\n\t\tif(self.options.hideIcons && self.options.hideIcons.indexOf(items[i].name) != -1)\n\t\t\tcontinue;\n\n\t\t// Fullscreen does not work well on mobile devices (even tablets)\n\t\t// In the future, hopefully this can be resolved\n\t\tif((items[i].name == \"fullscreen\" || items[i].name == \"side-by-side\") && isMobile())\n\t\t\tcontinue;\n\n\t\t(function(item) {\n\t\t\tvar el;\n\t\t\tif(item === \"|\") {\n\t\t\t\tel = createSep();\n\t\t\t} else {\n\t\t\t\tel = createIcon(item, self.options.toolbarTips);\n\t\t\t}\n\n\t\t\t// bind events, special for info\n\t\t\tif(item.action) {\n\t\t\t\tif(typeof item.action === \"function\") {\n\t\t\t\t\tel.onclick = function() {\n\t\t\t\t\t\titem.action(self);\n\t\t\t\t\t};\n\t\t\t\t} else if(typeof item.action === \"string\") {\n\t\t\t\t\tel.href = item.action;\n\t\t\t\t\tel.target = \"_blank\";\n\t\t\t\t}\n\t\t\t}\n\t\t\ttoolbar_data[item.name || item] = el;\n\t\t\tbar.appendChild(el);\n\t\t})(items[i]);\n\t}\n\n\tself.toolbarElements = toolbar_data;\n\n\tvar cm = this.codemirror;\n\tcm.on(\"cursorActivity\", function() {\n\t\tvar stat = getState(cm);\n\n\t\tfor(var key in toolbar_data) {\n\t\t\t(function(key) {\n\t\t\t\tvar el = toolbar_data[key];\n\t\t\t\tif(stat[key]) {\n\t\t\t\t\tel.className += \" active\";\n\t\t\t\t} else if(key != \"fullscreen\" && key != \"side-by-side\") {\n\t\t\t\t\tel.className = el.className.replace(/\\s*active\\s*/g, \"\");\n\t\t\t\t}\n\t\t\t})(key);\n\t\t}\n\t});\n\n\tvar cmWrapper = cm.getWrapperElement();\n\tcmWrapper.parentNode.insertBefore(bar, cmWrapper);\n\treturn bar;\n};\n\nSimpleMDE.prototype.createStatusbar = function(status) {\n\tstatus = status || this.options.status;\n\tvar options = this.options;\n\n\tif(!status || status.length === 0) return;\n\n\tvar bar = document.createElement(\"div\");\n\tbar.className = \"editor-statusbar\";\n\n\tvar pos, cm = this.codemirror;\n\tfor(var i = 0; i < status.length; i++) {\n\t\t(function(name) {\n\t\t\tvar el = document.createElement(\"span\");\n\t\t\tel.className = name;\n\t\t\tif(name === \"words\") {\n\t\t\t\tel.innerHTML = \"0\";\n\t\t\t\tcm.on(\"update\", function() {\n\t\t\t\t\tel.innerHTML = wordCount(cm.getValue());\n\t\t\t\t});\n\t\t\t} else if(name === \"lines\") {\n\t\t\t\tel.innerHTML = \"0\";\n\t\t\t\tcm.on(\"update\", function() {\n\t\t\t\t\tel.innerHTML = cm.lineCount();\n\t\t\t\t});\n\t\t\t} else if(name === \"cursor\") {\n\t\t\t\tel.innerHTML = \"0:0\";\n\t\t\t\tcm.on(\"cursorActivity\", function() {\n\t\t\t\t\tpos = cm.getCursor();\n\t\t\t\t\tel.innerHTML = pos.line + \":\" + pos.ch;\n\t\t\t\t});\n\t\t\t} else if(name === \"autosave\") {\n\t\t\t\tif(options.autosave != undefined && options.autosave.enabled === true) {\n\t\t\t\t\tel.setAttribute(\"id\", \"autosaved\");\n\t\t\t\t}\n\t\t\t}\n\t\t\tbar.appendChild(el);\n\t\t})(status[i]);\n\t}\n\n\tvar cmWrapper = this.codemirror.getWrapperElement();\n\tcmWrapper.parentNode.insertBefore(bar, cmWrapper.nextSibling);\n\treturn bar;\n};\n\n/**\n * Get or set the text content.\n */\nSimpleMDE.prototype.value = function(val) {\n\tif(val === undefined) {\n\t\treturn this.codemirror.getValue();\n\t} else {\n\t\tthis.codemirror.getDoc().setValue(val);\n\t\treturn this;\n\t}\n};\n\n\n/**\n * Bind static methods for exports.\n */\nSimpleMDE.toggleBold = toggleBold;\nSimpleMDE.toggleItalic = toggleItalic;\nSimpleMDE.toggleStrikethrough = toggleStrikethrough;\nSimpleMDE.toggleBlockquote = toggleBlockquote;\nSimpleMDE.toggleHeadingSmaller = toggleHeadingSmaller;\nSimpleMDE.toggleHeadingBigger = toggleHeadingBigger;\nSimpleMDE.toggleHeading1 = toggleHeading1;\nSimpleMDE.toggleHeading2 = toggleHeading2;\nSimpleMDE.toggleHeading3 = toggleHeading3;\nSimpleMDE.toggleCodeBlock = toggleCodeBlock;\nSimpleMDE.toggleUnorderedList = toggleUnorderedList;\nSimpleMDE.toggleOrderedList = toggleOrderedList;\nSimpleMDE.drawLink = drawLink;\nSimpleMDE.drawImage = drawImage;\nSimpleMDE.drawTable = drawTable;\nSimpleMDE.drawHorizontalRule = drawHorizontalRule;\nSimpleMDE.undo = undo;\nSimpleMDE.redo = redo;\nSimpleMDE.togglePreview = togglePreview;\nSimpleMDE.toggleSideBySide = toggleSideBySide;\nSimpleMDE.toggleFullScreen = toggleFullScreen;\n\n/**\n * Bind instance methods for exports.\n */\nSimpleMDE.prototype.toggleBold = function() {\n\ttoggleBold(this);\n};\nSimpleMDE.prototype.toggleItalic = function() {\n\ttoggleItalic(this);\n};\nSimpleMDE.prototype.toggleStrikethrough = function() {\n\ttoggleStrikethrough(this);\n};\nSimpleMDE.prototype.toggleBlockquote = function() {\n\ttoggleBlockquote(this);\n};\nSimpleMDE.prototype.toggleHeadingSmaller = function() {\n\ttoggleHeadingSmaller(this);\n};\nSimpleMDE.prototype.toggleHeadingBigger = function() {\n\ttoggleHeadingBigger(this);\n};\nSimpleMDE.prototype.toggleHeading1 = function() {\n\ttoggleHeading1(this);\n};\nSimpleMDE.prototype.toggleHeading2 = function() {\n\ttoggleHeading2(this);\n};\nSimpleMDE.prototype.toggleHeading3 = function() {\n\ttoggleHeading3(this);\n};\nSimpleMDE.prototype.toggleCodeBlock = function() {\n\ttoggleCodeBlock(this);\n};\nSimpleMDE.prototype.toggleUnorderedList = function() {\n\ttoggleUnorderedList(this);\n};\nSimpleMDE.prototype.toggleOrderedList = function() {\n\ttoggleOrderedList(this);\n};\nSimpleMDE.prototype.drawLink = function() {\n\tdrawLink(this);\n};\nSimpleMDE.prototype.drawImage = function() {\n\tdrawImage(this);\n};\nSimpleMDE.prototype.drawTable = function() {\n\tdrawTable(this);\n};\nSimpleMDE.prototype.drawHorizontalRule = function() {\n\tdrawHorizontalRule(this);\n};\nSimpleMDE.prototype.undo = function() {\n\tundo(this);\n};\nSimpleMDE.prototype.redo = function() {\n\tredo(this);\n};\nSimpleMDE.prototype.togglePreview = function() {\n\ttogglePreview(this);\n};\nSimpleMDE.prototype.toggleSideBySide = function() {\n\ttoggleSideBySide(this);\n};\nSimpleMDE.prototype.toggleFullScreen = function() {\n\ttoggleFullScreen(this);\n};\n\nSimpleMDE.prototype.isPreviewActive = function() {\n\tvar cm = this.codemirror;\n\tvar wrapper = cm.getWrapperElement();\n\tvar preview = wrapper.lastChild;\n\n\treturn /editor-preview-active/.test(preview.className);\n};\n\nSimpleMDE.prototype.isSideBySideActive = function() {\n\tvar cm = this.codemirror;\n\tvar wrapper = cm.getWrapperElement();\n\tvar preview = wrapper.nextSibling;\n\n\treturn /editor-preview-active-side/.test(preview.className);\n};\n\nSimpleMDE.prototype.isFullscreenActive = function() {\n\tvar cm = this.codemirror;\n\n\treturn cm.getOption(\"fullScreen\");\n};\n\nmodule.exports = SimpleMDE;\n"]}

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