openrat-cms

Unnamed repository; edit this file 'description' to name the repository.
Log | Files | Refs | README

markdown.js (28709B)


      1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
      2 // Distributed under an MIT license: http://codemirror.net/LICENSE
      3 
      4 (function(mod) {
      5   if (typeof exports == "object" && typeof module == "object") // CommonJS
      6     mod(require("../../lib/codemirror"), require("../xml/xml"), require("../meta"));
      7   else if (typeof define == "function" && define.amd) // AMD
      8     define(["../../lib/codemirror", "../xml/xml", "../meta"], mod);
      9   else // Plain browser env
     10     mod(CodeMirror);
     11 })(function(CodeMirror) {
     12 "use strict";
     13 
     14 CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
     15 
     16   var htmlMode = CodeMirror.getMode(cmCfg, "text/html");
     17   var htmlModeMissing = htmlMode.name == "null"
     18 
     19   function getMode(name) {
     20     if (CodeMirror.findModeByName) {
     21       var found = CodeMirror.findModeByName(name);
     22       if (found) name = found.mime || found.mimes[0];
     23     }
     24     var mode = CodeMirror.getMode(cmCfg, name);
     25     return mode.name == "null" ? null : mode;
     26   }
     27 
     28   // Should characters that affect highlighting be highlighted separate?
     29   // Does not include characters that will be output (such as `1.` and `-` for lists)
     30   if (modeCfg.highlightFormatting === undefined)
     31     modeCfg.highlightFormatting = false;
     32 
     33   // Maximum number of nested blockquotes. Set to 0 for infinite nesting.
     34   // Excess `>` will emit `error` token.
     35   if (modeCfg.maxBlockquoteDepth === undefined)
     36     modeCfg.maxBlockquoteDepth = 0;
     37 
     38   // Turn on task lists? ("- [ ] " and "- [x] ")
     39   if (modeCfg.taskLists === undefined) modeCfg.taskLists = false;
     40 
     41   // Turn on strikethrough syntax
     42   if (modeCfg.strikethrough === undefined)
     43     modeCfg.strikethrough = false;
     44 
     45   if (modeCfg.emoji === undefined)
     46     modeCfg.emoji = false;
     47 
     48   if (modeCfg.fencedCodeBlockHighlighting === undefined)
     49     modeCfg.fencedCodeBlockHighlighting = true;
     50 
     51   if (modeCfg.xml === undefined)
     52     modeCfg.xml = true;
     53 
     54   // Allow token types to be overridden by user-provided token types.
     55   if (modeCfg.tokenTypeOverrides === undefined)
     56     modeCfg.tokenTypeOverrides = {};
     57 
     58   var tokenTypes = {
     59     header: "header",
     60     code: "comment",
     61     quote: "quote",
     62     list1: "variable-2",
     63     list2: "variable-3",
     64     list3: "keyword",
     65     hr: "hr",
     66     image: "image",
     67     imageAltText: "image-alt-text",
     68     imageMarker: "image-marker",
     69     formatting: "formatting",
     70     linkInline: "link",
     71     linkEmail: "link",
     72     linkText: "link",
     73     linkHref: "string",
     74     em: "em",
     75     strong: "strong",
     76     strikethrough: "strikethrough",
     77     emoji: "builtin"
     78   };
     79 
     80   for (var tokenType in tokenTypes) {
     81     if (tokenTypes.hasOwnProperty(tokenType) && modeCfg.tokenTypeOverrides[tokenType]) {
     82       tokenTypes[tokenType] = modeCfg.tokenTypeOverrides[tokenType];
     83     }
     84   }
     85 
     86   var hrRE = /^([*\-_])(?:\s*\1){2,}\s*$/
     87   ,   listRE = /^(?:[*\-+]|^[0-9]+([.)]))\s+/
     88   ,   taskListRE = /^\[(x| )\](?=\s)/i // Must follow listRE
     89   ,   atxHeaderRE = modeCfg.allowAtxHeaderWithoutSpace ? /^(#+)/ : /^(#+)(?: |$)/
     90   ,   setextHeaderRE = /^ *(?:\={1,}|-{1,})\s*$/
     91   ,   textRE = /^[^#!\[\]*_\\<>` "'(~:]+/
     92   ,   fencedCodeRE = /^(~~~+|```+)[ \t]*([\w+#-]*)[^\n`]*$/
     93   ,   linkDefRE = /^\s*\[[^\]]+?\]:\s*\S+(\s*\S*\s*)?$/ // naive link-definition
     94   ,   punctuation = /[!\"#$%&\'()*+,\-\.\/:;<=>?@\[\\\]^_`{|}~—]/
     95   ,   expandedTab = "    " // CommonMark specifies tab as 4 spaces
     96 
     97   function switchInline(stream, state, f) {
     98     state.f = state.inline = f;
     99     return f(stream, state);
    100   }
    101 
    102   function switchBlock(stream, state, f) {
    103     state.f = state.block = f;
    104     return f(stream, state);
    105   }
    106 
    107   function lineIsEmpty(line) {
    108     return !line || !/\S/.test(line.string)
    109   }
    110 
    111   // Blocks
    112 
    113   function blankLine(state) {
    114     // Reset linkTitle state
    115     state.linkTitle = false;
    116     // Reset EM state
    117     state.em = false;
    118     // Reset STRONG state
    119     state.strong = false;
    120     // Reset strikethrough state
    121     state.strikethrough = false;
    122     // Reset state.quote
    123     state.quote = 0;
    124     // Reset state.indentedCode
    125     state.indentedCode = false;
    126     if (state.f == htmlBlock) {
    127       state.f = inlineNormal;
    128       state.block = blockNormal;
    129     }
    130     // Reset state.trailingSpace
    131     state.trailingSpace = 0;
    132     state.trailingSpaceNewLine = false;
    133     // Mark this line as blank
    134     state.prevLine = state.thisLine
    135     state.thisLine = {stream: null}
    136     return null;
    137   }
    138 
    139   function blockNormal(stream, state) {
    140     var firstTokenOnLine = stream.column() === state.indentation;
    141     var prevLineLineIsEmpty = lineIsEmpty(state.prevLine.stream);
    142     var prevLineIsIndentedCode = state.indentedCode;
    143     var prevLineIsHr = state.prevLine.hr;
    144     var prevLineIsList = state.list !== false;
    145     var maxNonCodeIndentation = (state.listStack[state.listStack.length - 1] || 0) + 3;
    146 
    147     state.indentedCode = false;
    148 
    149     var lineIndentation = state.indentation;
    150     // compute once per line (on first token)
    151     if (state.indentationDiff === null) {
    152       state.indentationDiff = state.indentation;
    153       if (prevLineIsList) {
    154         state.list = null;
    155         // While this list item's marker's indentation is less than the deepest
    156         //  list item's content's indentation,pop the deepest list item
    157         //  indentation off the stack, and update block indentation state
    158         while (lineIndentation < state.listStack[state.listStack.length - 1]) {
    159           state.listStack.pop();
    160           if (state.listStack.length) {
    161             state.indentation = state.listStack[state.listStack.length - 1];
    162           // less than the first list's indent -> the line is no longer a list
    163           } else {
    164             state.list = false;
    165           }
    166         }
    167         if (state.list !== false) {
    168           state.indentationDiff = lineIndentation - state.listStack[state.listStack.length - 1]
    169         }
    170       }
    171     }
    172 
    173     // not comprehensive (currently only for setext detection purposes)
    174     var allowsInlineContinuation = (
    175         !prevLineLineIsEmpty && !prevLineIsHr && !state.prevLine.header &&
    176         (!prevLineIsList || !prevLineIsIndentedCode) &&
    177         !state.prevLine.fencedCodeEnd
    178     );
    179 
    180     var isHr = (state.list === false || prevLineIsHr || prevLineLineIsEmpty) &&
    181       state.indentation <= maxNonCodeIndentation && stream.match(hrRE);
    182 
    183     var match = null;
    184     if (state.indentationDiff >= 4 && (prevLineIsIndentedCode || state.prevLine.fencedCodeEnd ||
    185          state.prevLine.header || prevLineLineIsEmpty)) {
    186       stream.skipToEnd();
    187       state.indentedCode = true;
    188       return tokenTypes.code;
    189     } else if (stream.eatSpace()) {
    190       return null;
    191     } else if (firstTokenOnLine && state.indentation <= maxNonCodeIndentation && (match = stream.match(atxHeaderRE)) && match[1].length <= 6) {
    192       state.quote = 0;
    193       state.header = match[1].length;
    194       state.thisLine.header = true;
    195       if (modeCfg.highlightFormatting) state.formatting = "header";
    196       state.f = state.inline;
    197       return getType(state);
    198     } else if (state.indentation <= maxNonCodeIndentation && stream.eat('>')) {
    199       state.quote = firstTokenOnLine ? 1 : state.quote + 1;
    200       if (modeCfg.highlightFormatting) state.formatting = "quote";
    201       stream.eatSpace();
    202       return getType(state);
    203     } else if (!isHr && !state.setext && firstTokenOnLine && state.indentation <= maxNonCodeIndentation && (match = stream.match(listRE))) {
    204       var listType = match[1] ? "ol" : "ul";
    205 
    206       state.indentation = lineIndentation + stream.current().length;
    207       state.list = true;
    208       state.quote = 0;
    209 
    210       // Add this list item's content's indentation to the stack
    211       state.listStack.push(state.indentation);
    212 
    213       if (modeCfg.taskLists && stream.match(taskListRE, false)) {
    214         state.taskList = true;
    215       }
    216       state.f = state.inline;
    217       if (modeCfg.highlightFormatting) state.formatting = ["list", "list-" + listType];
    218       return getType(state);
    219     } else if (firstTokenOnLine && state.indentation <= maxNonCodeIndentation && (match = stream.match(fencedCodeRE, true))) {
    220       state.quote = 0;
    221       state.fencedEndRE = new RegExp(match[1] + "+ *$");
    222       // try switching mode
    223       state.localMode = modeCfg.fencedCodeBlockHighlighting && getMode(match[2]);
    224       if (state.localMode) state.localState = CodeMirror.startState(state.localMode);
    225       state.f = state.block = local;
    226       if (modeCfg.highlightFormatting) state.formatting = "code-block";
    227       state.code = -1
    228       return getType(state);
    229     // SETEXT has lowest block-scope precedence after HR, so check it after
    230     //  the others (code, blockquote, list...)
    231     } else if (
    232       // if setext set, indicates line after ---/===
    233       state.setext || (
    234         // line before ---/===
    235         (!allowsInlineContinuation || !prevLineIsList) && !state.quote && state.list === false &&
    236         !state.code && !isHr && !linkDefRE.test(stream.string) &&
    237         (match = stream.lookAhead(1)) && (match = match.match(setextHeaderRE))
    238       )
    239     ) {
    240       if ( !state.setext ) {
    241         state.header = match[0].charAt(0) == '=' ? 1 : 2;
    242         state.setext = state.header;
    243       } else {
    244         state.header = state.setext;
    245         // has no effect on type so we can reset it now
    246         state.setext = 0;
    247         stream.skipToEnd();
    248         if (modeCfg.highlightFormatting) state.formatting = "header";
    249       }
    250       state.thisLine.header = true;
    251       state.f = state.inline;
    252       return getType(state);
    253     } else if (isHr) {
    254       stream.skipToEnd();
    255       state.hr = true;
    256       state.thisLine.hr = true;
    257       return tokenTypes.hr;
    258     } else if (stream.peek() === '[') {
    259       return switchInline(stream, state, footnoteLink);
    260     }
    261 
    262     return switchInline(stream, state, state.inline);
    263   }
    264 
    265   function htmlBlock(stream, state) {
    266     var style = htmlMode.token(stream, state.htmlState);
    267     if (!htmlModeMissing) {
    268       var inner = CodeMirror.innerMode(htmlMode, state.htmlState)
    269       if ((inner.mode.name == "xml" && inner.state.tagStart === null &&
    270            (!inner.state.context && inner.state.tokenize.isInText)) ||
    271           (state.md_inside && stream.current().indexOf(">") > -1)) {
    272         state.f = inlineNormal;
    273         state.block = blockNormal;
    274         state.htmlState = null;
    275       }
    276     }
    277     return style;
    278   }
    279 
    280   function local(stream, state) {
    281     var currListInd = state.listStack[state.listStack.length - 1] || 0;
    282     var hasExitedList = state.indentation < currListInd;
    283     var maxFencedEndInd = currListInd + 3;
    284     if (state.fencedEndRE && state.indentation <= maxFencedEndInd && (hasExitedList || stream.match(state.fencedEndRE))) {
    285       if (modeCfg.highlightFormatting) state.formatting = "code-block";
    286       var returnType;
    287       if (!hasExitedList) returnType = getType(state)
    288       state.localMode = state.localState = null;
    289       state.block = blockNormal;
    290       state.f = inlineNormal;
    291       state.fencedEndRE = null;
    292       state.code = 0
    293       state.thisLine.fencedCodeEnd = true;
    294       if (hasExitedList) return switchBlock(stream, state, state.block);
    295       return returnType;
    296     } else if (state.localMode) {
    297       return state.localMode.token(stream, state.localState);
    298     } else {
    299       stream.skipToEnd();
    300       return tokenTypes.code;
    301     }
    302   }
    303 
    304   // Inline
    305   function getType(state) {
    306     var styles = [];
    307 
    308     if (state.formatting) {
    309       styles.push(tokenTypes.formatting);
    310 
    311       if (typeof state.formatting === "string") state.formatting = [state.formatting];
    312 
    313       for (var i = 0; i < state.formatting.length; i++) {
    314         styles.push(tokenTypes.formatting + "-" + state.formatting[i]);
    315 
    316         if (state.formatting[i] === "header") {
    317           styles.push(tokenTypes.formatting + "-" + state.formatting[i] + "-" + state.header);
    318         }
    319 
    320         // Add `formatting-quote` and `formatting-quote-#` for blockquotes
    321         // Add `error` instead if the maximum blockquote nesting depth is passed
    322         if (state.formatting[i] === "quote") {
    323           if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {
    324             styles.push(tokenTypes.formatting + "-" + state.formatting[i] + "-" + state.quote);
    325           } else {
    326             styles.push("error");
    327           }
    328         }
    329       }
    330     }
    331 
    332     if (state.taskOpen) {
    333       styles.push("meta");
    334       return styles.length ? styles.join(' ') : null;
    335     }
    336     if (state.taskClosed) {
    337       styles.push("property");
    338       return styles.length ? styles.join(' ') : null;
    339     }
    340 
    341     if (state.linkHref) {
    342       styles.push(tokenTypes.linkHref, "url");
    343     } else { // Only apply inline styles to non-url text
    344       if (state.strong) { styles.push(tokenTypes.strong); }
    345       if (state.em) { styles.push(tokenTypes.em); }
    346       if (state.strikethrough) { styles.push(tokenTypes.strikethrough); }
    347       if (state.emoji) { styles.push(tokenTypes.emoji); }
    348       if (state.linkText) { styles.push(tokenTypes.linkText); }
    349       if (state.code) { styles.push(tokenTypes.code); }
    350       if (state.image) { styles.push(tokenTypes.image); }
    351       if (state.imageAltText) { styles.push(tokenTypes.imageAltText, "link"); }
    352       if (state.imageMarker) { styles.push(tokenTypes.imageMarker); }
    353     }
    354 
    355     if (state.header) { styles.push(tokenTypes.header, tokenTypes.header + "-" + state.header); }
    356 
    357     if (state.quote) {
    358       styles.push(tokenTypes.quote);
    359 
    360       // Add `quote-#` where the maximum for `#` is modeCfg.maxBlockquoteDepth
    361       if (!modeCfg.maxBlockquoteDepth || modeCfg.maxBlockquoteDepth >= state.quote) {
    362         styles.push(tokenTypes.quote + "-" + state.quote);
    363       } else {
    364         styles.push(tokenTypes.quote + "-" + modeCfg.maxBlockquoteDepth);
    365       }
    366     }
    367 
    368     if (state.list !== false) {
    369       var listMod = (state.listStack.length - 1) % 3;
    370       if (!listMod) {
    371         styles.push(tokenTypes.list1);
    372       } else if (listMod === 1) {
    373         styles.push(tokenTypes.list2);
    374       } else {
    375         styles.push(tokenTypes.list3);
    376       }
    377     }
    378 
    379     if (state.trailingSpaceNewLine) {
    380       styles.push("trailing-space-new-line");
    381     } else if (state.trailingSpace) {
    382       styles.push("trailing-space-" + (state.trailingSpace % 2 ? "a" : "b"));
    383     }
    384 
    385     return styles.length ? styles.join(' ') : null;
    386   }
    387 
    388   function handleText(stream, state) {
    389     if (stream.match(textRE, true)) {
    390       return getType(state);
    391     }
    392     return undefined;
    393   }
    394 
    395   function inlineNormal(stream, state) {
    396     var style = state.text(stream, state);
    397     if (typeof style !== 'undefined')
    398       return style;
    399 
    400     if (state.list) { // List marker (*, +, -, 1., etc)
    401       state.list = null;
    402       return getType(state);
    403     }
    404 
    405     if (state.taskList) {
    406       var taskOpen = stream.match(taskListRE, true)[1] === " ";
    407       if (taskOpen) state.taskOpen = true;
    408       else state.taskClosed = true;
    409       if (modeCfg.highlightFormatting) state.formatting = "task";
    410       state.taskList = false;
    411       return getType(state);
    412     }
    413 
    414     state.taskOpen = false;
    415     state.taskClosed = false;
    416 
    417     if (state.header && stream.match(/^#+$/, true)) {
    418       if (modeCfg.highlightFormatting) state.formatting = "header";
    419       return getType(state);
    420     }
    421 
    422     var ch = stream.next();
    423 
    424     // Matches link titles present on next line
    425     if (state.linkTitle) {
    426       state.linkTitle = false;
    427       var matchCh = ch;
    428       if (ch === '(') {
    429         matchCh = ')';
    430       }
    431       matchCh = (matchCh+'').replace(/([.?*+^\[\]\\(){}|-])/g, "\\$1");
    432       var regex = '^\\s*(?:[^' + matchCh + '\\\\]+|\\\\\\\\|\\\\.)' + matchCh;
    433       if (stream.match(new RegExp(regex), true)) {
    434         return tokenTypes.linkHref;
    435       }
    436     }
    437 
    438     // If this block is changed, it may need to be updated in GFM mode
    439     if (ch === '`') {
    440       var previousFormatting = state.formatting;
    441       if (modeCfg.highlightFormatting) state.formatting = "code";
    442       stream.eatWhile('`');
    443       var count = stream.current().length
    444       if (state.code == 0 && (!state.quote || count == 1)) {
    445         state.code = count
    446         return getType(state)
    447       } else if (count == state.code) { // Must be exact
    448         var t = getType(state)
    449         state.code = 0
    450         return t
    451       } else {
    452         state.formatting = previousFormatting
    453         return getType(state)
    454       }
    455     } else if (state.code) {
    456       return getType(state);
    457     }
    458 
    459     if (ch === '\\') {
    460       stream.next();
    461       if (modeCfg.highlightFormatting) {
    462         var type = getType(state);
    463         var formattingEscape = tokenTypes.formatting + "-escape";
    464         return type ? type + " " + formattingEscape : formattingEscape;
    465       }
    466     }
    467 
    468     if (ch === '!' && stream.match(/\[[^\]]*\] ?(?:\(|\[)/, false)) {
    469       state.imageMarker = true;
    470       state.image = true;
    471       if (modeCfg.highlightFormatting) state.formatting = "image";
    472       return getType(state);
    473     }
    474 
    475     if (ch === '[' && state.imageMarker && stream.match(/[^\]]*\](\(.*?\)| ?\[.*?\])/, false)) {
    476       state.imageMarker = false;
    477       state.imageAltText = true
    478       if (modeCfg.highlightFormatting) state.formatting = "image";
    479       return getType(state);
    480     }
    481 
    482     if (ch === ']' && state.imageAltText) {
    483       if (modeCfg.highlightFormatting) state.formatting = "image";
    484       var type = getType(state);
    485       state.imageAltText = false;
    486       state.image = false;
    487       state.inline = state.f = linkHref;
    488       return type;
    489     }
    490 
    491     if (ch === '[' && !state.image) {
    492       state.linkText = true;
    493       if (modeCfg.highlightFormatting) state.formatting = "link";
    494       return getType(state);
    495     }
    496 
    497     if (ch === ']' && state.linkText) {
    498       if (modeCfg.highlightFormatting) state.formatting = "link";
    499       var type = getType(state);
    500       state.linkText = false;
    501       state.inline = state.f = stream.match(/\(.*?\)| ?\[.*?\]/, false) ? linkHref : inlineNormal
    502       return type;
    503     }
    504 
    505     if (ch === '<' && stream.match(/^(https?|ftps?):\/\/(?:[^\\>]|\\.)+>/, false)) {
    506       state.f = state.inline = linkInline;
    507       if (modeCfg.highlightFormatting) state.formatting = "link";
    508       var type = getType(state);
    509       if (type){
    510         type += " ";
    511       } else {
    512         type = "";
    513       }
    514       return type + tokenTypes.linkInline;
    515     }
    516 
    517     if (ch === '<' && stream.match(/^[^> \\]+@(?:[^\\>]|\\.)+>/, false)) {
    518       state.f = state.inline = linkInline;
    519       if (modeCfg.highlightFormatting) state.formatting = "link";
    520       var type = getType(state);
    521       if (type){
    522         type += " ";
    523       } else {
    524         type = "";
    525       }
    526       return type + tokenTypes.linkEmail;
    527     }
    528 
    529     if (modeCfg.xml && ch === '<' && stream.match(/^(!--|[a-z]+(?:\s+[a-z_:.\-]+(?:\s*=\s*[^ >]+)?)*\s*>)/i, false)) {
    530       var end = stream.string.indexOf(">", stream.pos);
    531       if (end != -1) {
    532         var atts = stream.string.substring(stream.start, end);
    533         if (/markdown\s*=\s*('|"){0,1}1('|"){0,1}/.test(atts)) state.md_inside = true;
    534       }
    535       stream.backUp(1);
    536       state.htmlState = CodeMirror.startState(htmlMode);
    537       return switchBlock(stream, state, htmlBlock);
    538     }
    539 
    540     if (modeCfg.xml && ch === '<' && stream.match(/^\/\w*?>/)) {
    541       state.md_inside = false;
    542       return "tag";
    543     } else if (ch === "*" || ch === "_") {
    544       var len = 1, before = stream.pos == 1 ? " " : stream.string.charAt(stream.pos - 2)
    545       while (len < 3 && stream.eat(ch)) len++
    546       var after = stream.peek() || " "
    547       // See http://spec.commonmark.org/0.27/#emphasis-and-strong-emphasis
    548       var leftFlanking = !/\s/.test(after) && (!punctuation.test(after) || /\s/.test(before) || punctuation.test(before))
    549       var rightFlanking = !/\s/.test(before) && (!punctuation.test(before) || /\s/.test(after) || punctuation.test(after))
    550       var setEm = null, setStrong = null
    551       if (len % 2) { // Em
    552         if (!state.em && leftFlanking && (ch === "*" || !rightFlanking || punctuation.test(before)))
    553           setEm = true
    554         else if (state.em == ch && rightFlanking && (ch === "*" || !leftFlanking || punctuation.test(after)))
    555           setEm = false
    556       }
    557       if (len > 1) { // Strong
    558         if (!state.strong && leftFlanking && (ch === "*" || !rightFlanking || punctuation.test(before)))
    559           setStrong = true
    560         else if (state.strong == ch && rightFlanking && (ch === "*" || !leftFlanking || punctuation.test(after)))
    561           setStrong = false
    562       }
    563       if (setStrong != null || setEm != null) {
    564         if (modeCfg.highlightFormatting) state.formatting = setEm == null ? "strong" : setStrong == null ? "em" : "strong em"
    565         if (setEm === true) state.em = ch
    566         if (setStrong === true) state.strong = ch
    567         var t = getType(state)
    568         if (setEm === false) state.em = false
    569         if (setStrong === false) state.strong = false
    570         return t
    571       }
    572     } else if (ch === ' ') {
    573       if (stream.eat('*') || stream.eat('_')) { // Probably surrounded by spaces
    574         if (stream.peek() === ' ') { // Surrounded by spaces, ignore
    575           return getType(state);
    576         } else { // Not surrounded by spaces, back up pointer
    577           stream.backUp(1);
    578         }
    579       }
    580     }
    581 
    582     if (modeCfg.strikethrough) {
    583       if (ch === '~' && stream.eatWhile(ch)) {
    584         if (state.strikethrough) {// Remove strikethrough
    585           if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
    586           var t = getType(state);
    587           state.strikethrough = false;
    588           return t;
    589         } else if (stream.match(/^[^\s]/, false)) {// Add strikethrough
    590           state.strikethrough = true;
    591           if (modeCfg.highlightFormatting) state.formatting = "strikethrough";
    592           return getType(state);
    593         }
    594       } else if (ch === ' ') {
    595         if (stream.match(/^~~/, true)) { // Probably surrounded by space
    596           if (stream.peek() === ' ') { // Surrounded by spaces, ignore
    597             return getType(state);
    598           } else { // Not surrounded by spaces, back up pointer
    599             stream.backUp(2);
    600           }
    601         }
    602       }
    603     }
    604 
    605     if (modeCfg.emoji && ch === ":" && stream.match(/^[a-z_\d+-]+:/)) {
    606       state.emoji = true;
    607       if (modeCfg.highlightFormatting) state.formatting = "emoji";
    608       var retType = getType(state);
    609       state.emoji = false;
    610       return retType;
    611     }
    612 
    613     if (ch === ' ') {
    614       if (stream.match(/ +$/, false)) {
    615         state.trailingSpace++;
    616       } else if (state.trailingSpace) {
    617         state.trailingSpaceNewLine = true;
    618       }
    619     }
    620 
    621     return getType(state);
    622   }
    623 
    624   function linkInline(stream, state) {
    625     var ch = stream.next();
    626 
    627     if (ch === ">") {
    628       state.f = state.inline = inlineNormal;
    629       if (modeCfg.highlightFormatting) state.formatting = "link";
    630       var type = getType(state);
    631       if (type){
    632         type += " ";
    633       } else {
    634         type = "";
    635       }
    636       return type + tokenTypes.linkInline;
    637     }
    638 
    639     stream.match(/^[^>]+/, true);
    640 
    641     return tokenTypes.linkInline;
    642   }
    643 
    644   function linkHref(stream, state) {
    645     // Check if space, and return NULL if so (to avoid marking the space)
    646     if(stream.eatSpace()){
    647       return null;
    648     }
    649     var ch = stream.next();
    650     if (ch === '(' || ch === '[') {
    651       state.f = state.inline = getLinkHrefInside(ch === "(" ? ")" : "]");
    652       if (modeCfg.highlightFormatting) state.formatting = "link-string";
    653       state.linkHref = true;
    654       return getType(state);
    655     }
    656     return 'error';
    657   }
    658 
    659   var linkRE = {
    660     ")": /^(?:[^\\\(\)]|\\.|\((?:[^\\\(\)]|\\.)*\))*?(?=\))/,
    661     "]": /^(?:[^\\\[\]]|\\.|\[(?:[^\\\[\]]|\\.)*\])*?(?=\])/
    662   }
    663 
    664   function getLinkHrefInside(endChar) {
    665     return function(stream, state) {
    666       var ch = stream.next();
    667 
    668       if (ch === endChar) {
    669         state.f = state.inline = inlineNormal;
    670         if (modeCfg.highlightFormatting) state.formatting = "link-string";
    671         var returnState = getType(state);
    672         state.linkHref = false;
    673         return returnState;
    674       }
    675 
    676       stream.match(linkRE[endChar])
    677       state.linkHref = true;
    678       return getType(state);
    679     };
    680   }
    681 
    682   function footnoteLink(stream, state) {
    683     if (stream.match(/^([^\]\\]|\\.)*\]:/, false)) {
    684       state.f = footnoteLinkInside;
    685       stream.next(); // Consume [
    686       if (modeCfg.highlightFormatting) state.formatting = "link";
    687       state.linkText = true;
    688       return getType(state);
    689     }
    690     return switchInline(stream, state, inlineNormal);
    691   }
    692 
    693   function footnoteLinkInside(stream, state) {
    694     if (stream.match(/^\]:/, true)) {
    695       state.f = state.inline = footnoteUrl;
    696       if (modeCfg.highlightFormatting) state.formatting = "link";
    697       var returnType = getType(state);
    698       state.linkText = false;
    699       return returnType;
    700     }
    701 
    702     stream.match(/^([^\]\\]|\\.)+/, true);
    703 
    704     return tokenTypes.linkText;
    705   }
    706 
    707   function footnoteUrl(stream, state) {
    708     // Check if space, and return NULL if so (to avoid marking the space)
    709     if(stream.eatSpace()){
    710       return null;
    711     }
    712     // Match URL
    713     stream.match(/^[^\s]+/, true);
    714     // Check for link title
    715     if (stream.peek() === undefined) { // End of line, set flag to check next line
    716       state.linkTitle = true;
    717     } else { // More content on line, check if link title
    718       stream.match(/^(?:\s+(?:"(?:[^"\\]|\\\\|\\.)+"|'(?:[^'\\]|\\\\|\\.)+'|\((?:[^)\\]|\\\\|\\.)+\)))?/, true);
    719     }
    720     state.f = state.inline = inlineNormal;
    721     return tokenTypes.linkHref + " url";
    722   }
    723 
    724   var mode = {
    725     startState: function() {
    726       return {
    727         f: blockNormal,
    728 
    729         prevLine: {stream: null},
    730         thisLine: {stream: null},
    731 
    732         block: blockNormal,
    733         htmlState: null,
    734         indentation: 0,
    735 
    736         inline: inlineNormal,
    737         text: handleText,
    738 
    739         formatting: false,
    740         linkText: false,
    741         linkHref: false,
    742         linkTitle: false,
    743         code: 0,
    744         em: false,
    745         strong: false,
    746         header: 0,
    747         setext: 0,
    748         hr: false,
    749         taskList: false,
    750         list: false,
    751         listStack: [],
    752         quote: 0,
    753         trailingSpace: 0,
    754         trailingSpaceNewLine: false,
    755         strikethrough: false,
    756         emoji: false,
    757         fencedEndRE: null
    758       };
    759     },
    760 
    761     copyState: function(s) {
    762       return {
    763         f: s.f,
    764 
    765         prevLine: s.prevLine,
    766         thisLine: s.thisLine,
    767 
    768         block: s.block,
    769         htmlState: s.htmlState && CodeMirror.copyState(htmlMode, s.htmlState),
    770         indentation: s.indentation,
    771 
    772         localMode: s.localMode,
    773         localState: s.localMode ? CodeMirror.copyState(s.localMode, s.localState) : null,
    774 
    775         inline: s.inline,
    776         text: s.text,
    777         formatting: false,
    778         linkText: s.linkText,
    779         linkTitle: s.linkTitle,
    780         code: s.code,
    781         em: s.em,
    782         strong: s.strong,
    783         strikethrough: s.strikethrough,
    784         emoji: s.emoji,
    785         header: s.header,
    786         setext: s.setext,
    787         hr: s.hr,
    788         taskList: s.taskList,
    789         list: s.list,
    790         listStack: s.listStack.slice(0),
    791         quote: s.quote,
    792         indentedCode: s.indentedCode,
    793         trailingSpace: s.trailingSpace,
    794         trailingSpaceNewLine: s.trailingSpaceNewLine,
    795         md_inside: s.md_inside,
    796         fencedEndRE: s.fencedEndRE
    797       };
    798     },
    799 
    800     token: function(stream, state) {
    801 
    802       // Reset state.formatting
    803       state.formatting = false;
    804 
    805       if (stream != state.thisLine.stream) {
    806         state.header = 0;
    807         state.hr = false;
    808 
    809         if (stream.match(/^\s*$/, true)) {
    810           blankLine(state);
    811           return null;
    812         }
    813 
    814         state.prevLine = state.thisLine
    815         state.thisLine = {stream: stream}
    816 
    817         // Reset state.taskList
    818         state.taskList = false;
    819 
    820         // Reset state.trailingSpace
    821         state.trailingSpace = 0;
    822         state.trailingSpaceNewLine = false;
    823 
    824         if (!state.localState) {
    825           state.f = state.block;
    826           if (state.f != htmlBlock) {
    827             var indentation = stream.match(/^\s*/, true)[0].replace(/\t/g, expandedTab).length;
    828             state.indentation = indentation;
    829             state.indentationDiff = null;
    830             if (indentation > 0) return null;
    831           }
    832         }
    833       }
    834       return state.f(stream, state);
    835     },
    836 
    837     innerMode: function(state) {
    838       if (state.block == htmlBlock) return {state: state.htmlState, mode: htmlMode};
    839       if (state.localState) return {state: state.localState, mode: state.localMode};
    840       return {state: state, mode: mode};
    841     },
    842 
    843     indent: function(state, textAfter, line) {
    844       if (state.block == htmlBlock && htmlMode.indent) return htmlMode.indent(state.htmlState, textAfter, line)
    845       if (state.localState && state.localMode.indent) return state.localMode.indent(state.localState, textAfter, line)
    846       return CodeMirror.Pass
    847     },
    848 
    849     blankLine: blankLine,
    850 
    851     getType: getType,
    852 
    853     closeBrackets: "()[]{}''\"\"``",
    854     fold: "markdown"
    855   };
    856   return mode;
    857 }, "xml");
    858 
    859 CodeMirror.defineMIME("text/x-markdown", "markdown");
    860 
    861 });