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showdown

Showdown.js 是一个基于 JavaScript 开发环境的 MarkDown 语法解释工具,能够支持服务端 Node.js 和客户端各大主流浏览器。

This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/488179/1413254/showdown.js

/*! showdown v 2.1.0 - 21-04-2022 */
// @ts-nocheck
(function (global, factory) {
  if (typeof exports === "object" && typeof module !== "undefined") {
    module.exports = factory();
  } else {
    global = typeof globalThis !== "undefined" ? globalThis : global || self;
    global.showdown = factory();
  }
})(typeof window !== "undefined" ? window : this, function () {
  /**
   * Created by Tivie on 13-07-2015.
   */

  function getDefaultOpts(simple) {
    "use strict";

    var defaultOptions = {
      omitExtraWLInCodeBlocks: {
        defaultValue: false,
        describe: "Omit the default extra whiteline added to code blocks",
        type: "boolean",
      },
      noHeaderId: {
        defaultValue: false,
        describe: "Turn on/off generated header id",
        type: "boolean",
      },
      prefixHeaderId: {
        defaultValue: false,
        describe:
          "Add a prefix to the generated header ids. Passing a string will prefix that string to the header id. Setting to true will add a generic 'section-' prefix",
        type: "string",
      },
      rawPrefixHeaderId: {
        defaultValue: false,
        describe:
          'Setting this option to true will prevent showdown from modifying the prefix. This might result in malformed IDs (if, for instance, the " char is used in the prefix)',
        type: "boolean",
      },
      ghCompatibleHeaderId: {
        defaultValue: false,
        describe:
          "Generate header ids compatible with github style (spaces are replaced with dashes, a bunch of non alphanumeric chars are removed)",
        type: "boolean",
      },
      rawHeaderId: {
        defaultValue: false,
        describe:
          "Remove only spaces, ' and \" from generated header ids (including prefixes), replacing them with dashes (-). WARNING: This might result in malformed ids",
        type: "boolean",
      },
      headerLevelStart: {
        defaultValue: false,
        describe: "The header blocks level start",
        type: "integer",
      },
      parseImgDimensions: {
        defaultValue: false,
        describe: "Turn on/off image dimension parsing",
        type: "boolean",
      },
      simplifiedAutoLink: {
        defaultValue: false,
        describe: "Turn on/off GFM autolink style",
        type: "boolean",
      },
      excludeTrailingPunctuationFromURLs: {
        defaultValue: false,
        describe:
          "Excludes trailing punctuation from links generated with autoLinking",
        type: "boolean",
      },
      literalMidWordUnderscores: {
        defaultValue: false,
        describe: "Parse midword underscores as literal underscores",
        type: "boolean",
      },
      literalMidWordAsterisks: {
        defaultValue: false,
        describe: "Parse midword asterisks as literal asterisks",
        type: "boolean",
      },
      strikethrough: {
        defaultValue: false,
        describe: "Turn on/off strikethrough support",
        type: "boolean",
      },
      tables: {
        defaultValue: false,
        describe: "Turn on/off tables support",
        type: "boolean",
      },
      tablesHeaderId: {
        defaultValue: false,
        describe: "Add an id to table headers",
        type: "boolean",
      },
      ghCodeBlocks: {
        defaultValue: true,
        describe: "Turn on/off GFM fenced code blocks support",
        type: "boolean",
      },
      tasklists: {
        defaultValue: false,
        describe: "Turn on/off GFM tasklist support",
        type: "boolean",
      },
      smoothLivePreview: {
        defaultValue: false,
        describe:
          "Prevents weird effects in live previews due to incomplete input",
        type: "boolean",
      },
      smartIndentationFix: {
        defaultValue: false,
        describe: "Tries to smartly fix indentation in es6 strings",
        type: "boolean",
      },
      disableForced4SpacesIndentedSublists: {
        defaultValue: false,
        describe:
          "Disables the requirement of indenting nested sublists by 4 spaces",
        type: "boolean",
      },
      simpleLineBreaks: {
        defaultValue: false,
        describe: "Parses simple line breaks as <br> (GFM Style)",
        type: "boolean",
      },
      requireSpaceBeforeHeadingText: {
        defaultValue: false,
        describe:
          "Makes adding a space between `#` and the header text mandatory (GFM Style)",
        type: "boolean",
      },
      ghMentions: {
        defaultValue: false,
        describe: "Enables github @mentions",
        type: "boolean",
      },
      ghMentionsLink: {
        defaultValue: "https://github.com/{u}",
        describe:
          "Changes the link generated by @mentions. Only applies if ghMentions option is enabled.",
        type: "string",
      },
      encodeEmails: {
        defaultValue: true,
        describe:
          "Encode e-mail addresses through the use of Character Entities, transforming ASCII e-mail addresses into its equivalent decimal entities",
        type: "boolean",
      },
      openLinksInNewWindow: {
        defaultValue: false,
        describe: "Open all links in new windows",
        type: "boolean",
      },
      backslashEscapesHTMLTags: {
        defaultValue: false,
        describe: "Support for HTML Tag escaping. ex: <div>foo</div>",
        type: "boolean",
      },
      emoji: {
        defaultValue: false,
        describe: "Enable emoji support. Ex: `this is a :smile: emoji`",
        type: "boolean",
      },
      underline: {
        defaultValue: false,
        describe:
          "Enable support for underline. Syntax is double or triple underscores: `__underline word__`. With this option enabled, underscores no longer parses into `<em>` and `<strong>`",
        type: "boolean",
      },
      ellipsis: {
        defaultValue: true,
        describe: "Replaces three dots with the ellipsis unicode character",
        type: "boolean",
      },
      completeHTMLDocument: {
        defaultValue: false,
        describe:
          "Outputs a complete html document, including `<html>`, `<head>` and `<body>` tags",
        type: "boolean",
      },
      metadata: {
        defaultValue: false,
        describe:
          "Enable support for document metadata (defined at the top of the document between `«««` and `»»»` or between `---` and `---`).",
        type: "boolean",
      },
      splitAdjacentBlockquotes: {
        defaultValue: false,
        describe: "Split adjacent blockquote blocks",
        type: "boolean",
      },
    };
    if (simple === false) {
      return JSON.parse(JSON.stringify(defaultOptions));
    }
    var ret = {};
    for (var opt in defaultOptions) {
      if (defaultOptions.hasOwnProperty(opt)) {
        ret[opt] = defaultOptions[opt].defaultValue;
      }
    }
    return ret;
  }

  function allOptionsOn() {
    "use strict";
    var options = getDefaultOpts(true),
      ret = {};
    for (var opt in options) {
      if (options.hasOwnProperty(opt)) {
        ret[opt] = true;
      }
    }
    return ret;
  }

  /**
   * Created by Tivie on 06-01-2015.
   */

  // Private properties
  var showdown = {},
    parsers = {},
    extensions = {},
    globalOptions = getDefaultOpts(true),
    setFlavor = "vanilla",
    flavor = {
      github: {
        omitExtraWLInCodeBlocks: true,
        simplifiedAutoLink: true,
        excludeTrailingPunctuationFromURLs: true,
        literalMidWordUnderscores: true,
        strikethrough: true,
        tables: true,
        tablesHeaderId: true,
        ghCodeBlocks: true,
        tasklists: true,
        disableForced4SpacesIndentedSublists: true,
        simpleLineBreaks: true,
        requireSpaceBeforeHeadingText: true,
        ghCompatibleHeaderId: true,
        ghMentions: true,
        backslashEscapesHTMLTags: true,
        emoji: true,
        splitAdjacentBlockquotes: true,
      },
      original: {
        noHeaderId: true,
        ghCodeBlocks: false,
      },
      ghost: {
        omitExtraWLInCodeBlocks: true,
        parseImgDimensions: true,
        simplifiedAutoLink: true,
        excludeTrailingPunctuationFromURLs: true,
        literalMidWordUnderscores: true,
        strikethrough: true,
        tables: true,
        tablesHeaderId: true,
        ghCodeBlocks: true,
        tasklists: true,
        smoothLivePreview: true,
        simpleLineBreaks: true,
        requireSpaceBeforeHeadingText: true,
        ghMentions: false,
        encodeEmails: true,
      },
      vanilla: getDefaultOpts(true),
      allOn: allOptionsOn(),
    };

  /**
   * helper namespace
   * @type {{}}
   */
  showdown.helper = {};

  /**
   * TODO LEGACY SUPPORT CODE
   * @type {{}}
   */
  showdown.extensions = {};

  /**
   * Set a global option
   * @static
   * @param {string} key
   * @param {*} value
   * @returns {showdown}
   */
  showdown.setOption = function (key, value) {
    "use strict";
    globalOptions[key] = value;
    return this;
  };

  /**
   * Get a global option
   * @static
   * @param {string} key
   * @returns {*}
   */
  showdown.getOption = function (key) {
    "use strict";
    return globalOptions[key];
  };

  /**
   * Get the global options
   * @static
   * @returns {{}}
   */
  showdown.getOptions = function () {
    "use strict";
    return globalOptions;
  };

  /**
   * Reset global options to the default values
   * @static
   */
  showdown.resetOptions = function () {
    "use strict";
    globalOptions = getDefaultOpts(true);
  };

  /**
   * Set the flavor showdown should use as default
   * @param {string} name
   */
  showdown.setFlavor = function (name) {
    "use strict";
    if (!flavor.hasOwnProperty(name)) {
      throw Error(name + " flavor was not found");
    }
    showdown.resetOptions();
    var preset = flavor[name];
    setFlavor = name;
    for (var option in preset) {
      if (preset.hasOwnProperty(option)) {
        globalOptions[option] = preset[option];
      }
    }
  };

  /**
   * Get the currently set flavor
   * @returns {string}
   */
  showdown.getFlavor = function () {
    "use strict";
    return setFlavor;
  };

  /**
   * Get the options of a specified flavor. Returns undefined if the flavor was not found
   * @param {string} name Name of the flavor
   * @returns {{}|undefined}
   */
  showdown.getFlavorOptions = function (name) {
    "use strict";
    if (flavor.hasOwnProperty(name)) {
      return flavor[name];
    }
  };

  /**
   * Get the default options
   * @static
   * @param {boolean} [simple=true]
   * @returns {{}}
   */
  showdown.getDefaultOptions = function (simple) {
    "use strict";
    return getDefaultOpts(simple);
  };

  /**
   * Get or set a subParser
   *
   * subParser(name)       - Get a registered subParser
   * subParser(name, func) - Register a subParser
   * @static
   * @param {string} name
   * @param {function} [func]
   * @returns {*}
   */
  showdown.subParser = function (name, func) {
    "use strict";
    if (showdown.helper.isString(name)) {
      if (typeof func !== "undefined") {
        parsers[name] = func;
      } else {
        if (parsers.hasOwnProperty(name)) {
          return parsers[name];
        } else {
          throw Error("SubParser named " + name + " not registered!");
        }
      }
    }
  };

  /**
   * Gets or registers an extension
   * @static
   * @param {string} name
   * @param {object|object[]|function=} ext
   * @returns {*}
   */
  showdown.extension = function (name, ext) {
    "use strict";

    if (!showdown.helper.isString(name)) {
      throw Error("Extension 'name' must be a string");
    }

    name = showdown.helper.stdExtName(name);

    // Getter
    if (showdown.helper.isUndefined(ext)) {
      if (!extensions.hasOwnProperty(name)) {
        throw Error("Extension named " + name + " is not registered!");
      }
      return extensions[name];

      // Setter
    } else {
      // Expand extension if it's wrapped in a function
      if (typeof ext === "function") {
        ext = ext();
      }

      // Ensure extension is an array
      if (!showdown.helper.isArray(ext)) {
        ext = [ext];
      }

      var validExtension = validate(ext, name);

      if (validExtension.valid) {
        extensions[name] = ext;
      } else {
        throw Error(validExtension.error);
      }
    }
  };

  /**
   * Gets all extensions registered
   * @returns {{}}
   */
  showdown.getAllExtensions = function () {
    "use strict";
    return extensions;
  };

  /**
   * Remove an extension
   * @param {string} name
   */
  showdown.removeExtension = function (name) {
    "use strict";
    delete extensions[name];
  };

  /**
   * Removes all extensions
   */
  showdown.resetExtensions = function () {
    "use strict";
    extensions = {};
  };

  /**
   * Validate extension
   * @param {array} extension
   * @param {string} name
   * @returns {{valid: boolean, error: string}}
   */
  function validate(extension, name) {
    "use strict";

    var errMsg = name
        ? "Error in " + name + " extension->"
        : "Error in unnamed extension",
      ret = {
        valid: true,
        error: "",
      };

    if (!showdown.helper.isArray(extension)) {
      extension = [extension];
    }

    for (var i = 0; i < extension.length; ++i) {
      var baseMsg = errMsg + " sub-extension " + i + ": ",
        ext = extension[i];
      if (typeof ext !== "object") {
        ret.valid = false;
        ret.error = baseMsg + "must be an object, but " + typeof ext + " given";
        return ret;
      }

      if (!showdown.helper.isString(ext.type)) {
        ret.valid = false;
        ret.error =
          baseMsg +
          'property "type" must be a string, but ' +
          typeof ext.type +
          " given";
        return ret;
      }

      var type = (ext.type = ext.type.toLowerCase());

      // normalize extension type
      if (type === "language") {
        type = ext.type = "lang";
      }

      if (type === "html") {
        type = ext.type = "output";
      }

      if (type !== "lang" && type !== "output" && type !== "listener") {
        ret.valid = false;
        ret.error =
          baseMsg +
          "type " +
          type +
          ' is not recognized. Valid values: "lang/language", "output/html" or "listener"';
        return ret;
      }

      if (type === "listener") {
        if (showdown.helper.isUndefined(ext.listeners)) {
          ret.valid = false;
          ret.error =
            baseMsg +
            '. Extensions of type "listener" must have a property called "listeners"';
          return ret;
        }
      } else {
        if (
          showdown.helper.isUndefined(ext.filter) &&
          showdown.helper.isUndefined(ext.regex)
        ) {
          ret.valid = false;
          ret.error =
            baseMsg +
            type +
            ' extensions must define either a "regex" property or a "filter" method';
          return ret;
        }
      }

      if (ext.listeners) {
        if (typeof ext.listeners !== "object") {
          ret.valid = false;
          ret.error =
            baseMsg +
            '"listeners" property must be an object but ' +
            typeof ext.listeners +
            " given";
          return ret;
        }
        for (var ln in ext.listeners) {
          if (ext.listeners.hasOwnProperty(ln)) {
            if (typeof ext.listeners[ln] !== "function") {
              ret.valid = false;
              ret.error =
                baseMsg +
                '"listeners" property must be an hash of [event name]: [callback]. listeners.' +
                ln +
                " must be a function but " +
                typeof ext.listeners[ln] +
                " given";
              return ret;
            }
          }
        }
      }

      if (ext.filter) {
        if (typeof ext.filter !== "function") {
          ret.valid = false;
          ret.error =
            baseMsg +
            '"filter" must be a function, but ' +
            typeof ext.filter +
            " given";
          return ret;
        }
      } else if (ext.regex) {
        if (showdown.helper.isString(ext.regex)) {
          ext.regex = new RegExp(ext.regex, "g");
        }
        if (!(ext.regex instanceof RegExp)) {
          ret.valid = false;
          ret.error =
            baseMsg +
            '"regex" property must either be a string or a RegExp object, but ' +
            typeof ext.regex +
            " given";
          return ret;
        }
        if (showdown.helper.isUndefined(ext.replace)) {
          ret.valid = false;
          ret.error =
            baseMsg +
            '"regex" extensions must implement a replace string or function';
          return ret;
        }
      }
    }
    return ret;
  }

  /**
   * Validate extension
   * @param {object} ext
   * @returns {boolean}
   */
  showdown.validateExtension = function (ext) {
    "use strict";

    var validateExtension = validate(ext, null);
    if (!validateExtension.valid) {
      console.warn(validateExtension.error);
      return false;
    }
    return true;
  };

  /**
   * showdownjs helper functions
   */

  if (!showdown.hasOwnProperty("helper")) {
    showdown.helper = {};
  }

  /**
   * Check if var is string
   * @static
   * @param {string} a
   * @returns {boolean}
   */
  showdown.helper.isString = function (a) {
    "use strict";
    return typeof a === "string" || a instanceof String;
  };

  /**
   * Check if var is a function
   * @static
   * @param {*} a
   * @returns {boolean}
   */
  showdown.helper.isFunction = function (a) {
    "use strict";
    var getType = {};
    return a && getType.toString.call(a) === "[object Function]";
  };

  /**
   * isArray helper function
   * @static
   * @param {*} a
   * @returns {boolean}
   */
  showdown.helper.isArray = function (a) {
    "use strict";
    return Array.isArray(a);
  };

  /**
   * Check if value is undefined
   * @static
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
   */
  showdown.helper.isUndefined = function (value) {
    "use strict";
    return typeof value === "undefined";
  };

  /**
   * ForEach helper function
   * Iterates over Arrays and Objects (own properties only)
   * @static
   * @param {*} obj
   * @param {function} callback Accepts 3 params: 1. value, 2. key, 3. the original array/object
   */
  showdown.helper.forEach = function (obj, callback) {
    "use strict";
    // check if obj is defined
    if (showdown.helper.isUndefined(obj)) {
      throw new Error("obj param is required");
    }

    if (showdown.helper.isUndefined(callback)) {
      throw new Error("callback param is required");
    }

    if (!showdown.helper.isFunction(callback)) {
      throw new Error("callback param must be a function/closure");
    }

    if (typeof obj.forEach === "function") {
      obj.forEach(callback);
    } else if (showdown.helper.isArray(obj)) {
      for (var i = 0; i < obj.length; i++) {
        callback(obj[i], i, obj);
      }
    } else if (typeof obj === "object") {
      for (var prop in obj) {
        if (obj.hasOwnProperty(prop)) {
          callback(obj[prop], prop, obj);
        }
      }
    } else {
      throw new Error("obj does not seem to be an array or an iterable object");
    }
  };

  /**
   * Standardidize extension name
   * @static
   * @param {string} s extension name
   * @returns {string}
   */
  showdown.helper.stdExtName = function (s) {
    "use strict";
    return s
      .replace(/[_?*+\/\\.^-]/g, "")
      .replace(/\s/g, "")
      .toLowerCase();
  };

  function escapeCharactersCallback(wholeMatch, m1) {
    "use strict";
    var charCodeToEscape = m1.charCodeAt(0);
    return "¨E" + charCodeToEscape + "E";
  }

  /**
   * Callback used to escape characters when passing through String.replace
   * @static
   * @param {string} wholeMatch
   * @param {string} m1
   * @returns {string}
   */
  showdown.helper.escapeCharactersCallback = escapeCharactersCallback;

  /**
   * Escape characters in a string
   * @static
   * @param {string} text
   * @param {string} charsToEscape
   * @param {boolean} afterBackslash
   * @returns {XML|string|void|*}
   */
  showdown.helper.escapeCharacters = function (
    text,
    charsToEscape,
    afterBackslash
  ) {
    "use strict";
    // First we have to escape the escape characters so that
    // we can build a character class out of them
    var regexString =
      "([" + charsToEscape.replace(/([\[\]\\])/g, "\\$1") + "])";

    if (afterBackslash) {
      regexString = "\\\\" + regexString;
    }

    var regex = new RegExp(regexString, "g");
    text = text.replace(regex, escapeCharactersCallback);

    return text;
  };

  /**
   * Unescape HTML entities
   * @param txt
   * @returns {string}
   */
  showdown.helper.unescapeHTMLEntities = function (txt) {
    "use strict";

    return txt
      .replace(/&quot;/g, '"')
      .replace(/&lt;/g, "<")
      .replace(/&gt;/g, ">")
      .replace(/&amp;/g, "&");
  };

  var rgxFindMatchPos = function (str, left, right, flags) {
    "use strict";
    var f = flags || "",
      g = f.indexOf("g") > -1,
      x = new RegExp(left + "|" + right, "g" + f.replace(/g/g, "")),
      l = new RegExp(left, f.replace(/g/g, "")),
      pos = [],
      t,
      s,
      m,
      start,
      end;

    do {
      t = 0;
      while ((m = x.exec(str))) {
        if (l.test(m[0])) {
          if (!t++) {
            s = x.lastIndex;
            start = s - m[0].length;
          }
        } else if (t) {
          if (!--t) {
            end = m.index + m[0].length;
            var obj = {
              left: { start: start, end: s },
              match: { start: s, end: m.index },
              right: { start: m.index, end: end },
              wholeMatch: { start: start, end: end },
            };
            pos.push(obj);
            if (!g) {
              return pos;
            }
          }
        }
      }
    } while (t && (x.lastIndex = s));

    return pos;
  };

  /**
   * matchRecursiveRegExp
   *
   * (c) 2007 Steven Levithan <stevenlevithan.com>
   * MIT License
   *
   * Accepts a string to search, a left and right format delimiter
   * as regex patterns, and optional regex flags. Returns an array
   * of matches, allowing nested instances of left/right delimiters.
   * Use the "g" flag to return all matches, otherwise only the
   * first is returned. Be careful to ensure that the left and
   * right format delimiters produce mutually exclusive matches.
   * Backreferences are not supported within the right delimiter
   * due to how it is internally combined with the left delimiter.
   * When matching strings whose format delimiters are unbalanced
   * to the left or right, the output is intentionally as a
   * conventional regex library with recursion support would
   * produce, e.g. "<<x>" and "<x>>" both produce ["x"] when using
   * "<" and ">" as the delimiters (both strings contain a single,
   * balanced instance of "<x>").
   *
   * examples:
   * matchRecursiveRegExp("test", "\\(", "\\)")
   * returns: []
   * matchRecursiveRegExp("<t<<e>><s>>t<>", "<", ">", "g")
   * returns: ["t<<e>><s>", ""]
   * matchRecursiveRegExp("<div id=\"x\">test</div>", "<div\\b[^>]*>", "</div>", "gi")
   * returns: ["test"]
   */
  showdown.helper.matchRecursiveRegExp = function (str, left, right, flags) {
    "use strict";

    var matchPos = rgxFindMatchPos(str, left, right, flags),
      results = [];

    for (var i = 0; i < matchPos.length; ++i) {
      results.push([
        str.slice(matchPos[i].wholeMatch.start, matchPos[i].wholeMatch.end),
        str.slice(matchPos[i].match.start, matchPos[i].match.end),
        str.slice(matchPos[i].left.start, matchPos[i].left.end),
        str.slice(matchPos[i].right.start, matchPos[i].right.end),
      ]);
    }
    return results;
  };

  /**
   *
   * @param {string} str
   * @param {string|function} replacement
   * @param {string} left
   * @param {string} right
   * @param {string} flags
   * @returns {string}
   */
  showdown.helper.replaceRecursiveRegExp = function (
    str,
    replacement,
    left,
    right,
    flags
  ) {
    "use strict";

    if (!showdown.helper.isFunction(replacement)) {
      var repStr = replacement;
      replacement = function () {
        return repStr;
      };
    }

    var matchPos = rgxFindMatchPos(str, left, right, flags),
      finalStr = str,
      lng = matchPos.length;

    if (lng > 0) {
      var bits = [];
      if (matchPos[0].wholeMatch.start !== 0) {
        bits.push(str.slice(0, matchPos[0].wholeMatch.start));
      }
      for (var i = 0; i < lng; ++i) {
        bits.push(
          replacement(
            str.slice(matchPos[i].wholeMatch.start, matchPos[i].wholeMatch.end),
            str.slice(matchPos[i].match.start, matchPos[i].match.end),
            str.slice(matchPos[i].left.start, matchPos[i].left.end),
            str.slice(matchPos[i].right.start, matchPos[i].right.end)
          )
        );
        if (i < lng - 1) {
          bits.push(
            str.slice(
              matchPos[i].wholeMatch.end,
              matchPos[i + 1].wholeMatch.start
            )
          );
        }
      }
      if (matchPos[lng - 1].wholeMatch.end < str.length) {
        bits.push(str.slice(matchPos[lng - 1].wholeMatch.end));
      }
      finalStr = bits.join("");
    }
    return finalStr;
  };

  /**
   * Returns the index within the passed String object of the first occurrence of the specified regex,
   * starting the search at fromIndex. Returns -1 if the value is not found.
   *
   * @param {string} str string to search
   * @param {RegExp} regex Regular expression to search
   * @param {int} [fromIndex = 0] Index to start the search
   * @returns {Number}
   * @throws InvalidArgumentError
   */
  showdown.helper.regexIndexOf = function (str, regex, fromIndex) {
    "use strict";
    if (!showdown.helper.isString(str)) {
      throw "InvalidArgumentError: first parameter of showdown.helper.regexIndexOf function must be a string";
    }
    if (regex instanceof RegExp === false) {
      throw "InvalidArgumentError: second parameter of showdown.helper.regexIndexOf function must be an instance of RegExp";
    }
    var indexOf = str.substring(fromIndex || 0).search(regex);
    return indexOf >= 0 ? indexOf + (fromIndex || 0) : indexOf;
  };

  /**
   * Splits the passed string object at the defined index, and returns an array composed of the two substrings
   * @param {string} str string to split
   * @param {int} index index to split string at
   * @returns {[string,string]}
   * @throws InvalidArgumentError
   */
  showdown.helper.splitAtIndex = function (str, index) {
    "use strict";
    if (!showdown.helper.isString(str)) {
      throw "InvalidArgumentError: first parameter of showdown.helper.regexIndexOf function must be a string";
    }
    return [str.substring(0, index), str.substring(index)];
  };

  /**
   * Obfuscate an e-mail address through the use of Character Entities,
   * transforming ASCII characters into their equivalent decimal or hex entities.
   *
   * Since it has a random component, subsequent calls to this function produce different results
   *
   * @param {string} mail
   * @returns {string}
   */
  showdown.helper.encodeEmailAddress = function (mail) {
    "use strict";
    var encode = [
      function (ch) {
        return "&#" + ch.charCodeAt(0) + ";";
      },
      function (ch) {
        return "&#x" + ch.charCodeAt(0).toString(16) + ";";
      },
      function (ch) {
        return ch;
      },
    ];

    mail = mail.replace(/./g, function (ch) {
      if (ch === "@") {
        // this *must* be encoded. I insist.
        ch = encode[Math.floor(Math.random() * 2)](ch);
      } else {
        var r = Math.random();
        // roughly 10% raw, 45% hex, 45% dec
        ch = r > 0.9 ? encode[2](ch) : r > 0.45 ? encode[1](ch) : encode[0](ch);
      }
      return ch;
    });

    return mail;
  };

  /**
   *
   * @param str
   * @param targetLength
   * @param padString
   * @returns {string}
   */
  showdown.helper.padEnd = function padEnd(str, targetLength, padString) {
    "use strict";
    /*jshint bitwise: false*/
    // eslint-disable-next-line space-infix-ops
    targetLength = targetLength >> 0; //floor if number or convert non-number to 0;
    /*jshint bitwise: true*/
    padString = String(padString || " ");
    if (str.length > targetLength) {
      return String(str);
    } else {
      targetLength = targetLength - str.length;
      if (targetLength > padString.length) {
        padString += padString.repeat(targetLength / padString.length); //append to original to ensure we are longer than needed
      }
      return String(str) + padString.slice(0, targetLength);
    }
  };

  /**
   * POLYFILLS
   */
  // use this instead of builtin is undefined for IE8 compatibility
  if (typeof console === "undefined") {
    console = {
      warn: function (msg) {
        "use strict";
        alert(msg);
      },
      log: function (msg) {
        "use strict";
        alert(msg);
      },
      error: function (msg) {
        "use strict";
        throw msg;
      },
    };
  }

  /**
   * Common regexes.
   * We declare some common regexes to improve performance
   */
  showdown.helper.regexes = {
    asteriskDashAndColon: /([*_:~])/g,
  };

  /**
   * EMOJIS LIST
   */
  showdown.helper.emojis = {
    "+1": "\ud83d\udc4d",
    "-1": "\ud83d\udc4e",
    100: "\ud83d\udcaf",
    1234: "\ud83d\udd22",
    "1st_place_medal": "\ud83e\udd47",
    "2nd_place_medal": "\ud83e\udd48",
    "3rd_place_medal": "\ud83e\udd49",
    "8ball": "\ud83c\udfb1",
    a: "\ud83c\udd70\ufe0f",
    ab: "\ud83c\udd8e",
    abc: "\ud83d\udd24",
    abcd: "\ud83d\udd21",
    accept: "\ud83c\ude51",
    aerial_tramway: "\ud83d\udea1",
    airplane: "\u2708\ufe0f",
    alarm_clock: "\u23f0",
    alembic: "\u2697\ufe0f",
    alien: "\ud83d\udc7d",
    ambulance: "\ud83d\ude91",
    amphora: "\ud83c\udffa",
    anchor: "\u2693\ufe0f",
    angel: "\ud83d\udc7c",
    anger: "\ud83d\udca2",
    angry: "\ud83d\ude20",
    anguished: "\ud83d\ude27",
    ant: "\ud83d\udc1c",
    apple: "\ud83c\udf4e",
    aquarius: "\u2652\ufe0f",
    aries: "\u2648\ufe0f",
    arrow_backward: "\u25c0\ufe0f",
    arrow_double_down: "\u23ec",
    arrow_double_up: "\u23eb",
    arrow_down: "\u2b07\ufe0f",
    arrow_down_small: "\ud83d\udd3d",
    arrow_forward: "\u25b6\ufe0f",
    arrow_heading_down: "\u2935\ufe0f",
    arrow_heading_up: "\u2934\ufe0f",
    arrow_left: "\u2b05\ufe0f",
    arrow_lower_left: "\u2199\ufe0f",
    arrow_lower_right: "\u2198\ufe0f",
    arrow_right: "\u27a1\ufe0f",
    arrow_right_hook: "\u21aa\ufe0f",
    arrow_up: "\u2b06\ufe0f",
    arrow_up_down: "\u2195\ufe0f",
    arrow_up_small: "\ud83d\udd3c",
    arrow_upper_left: "\u2196\ufe0f",
    arrow_upper_right: "\u2197\ufe0f",
    arrows_clockwise: "\ud83d\udd03",
    arrows_counterclockwise: "\ud83d\udd04",
    art: "\ud83c\udfa8",
    articulated_lorry: "\ud83d\ude9b",
    artificial_satellite: "\ud83d\udef0",
    astonished: "\ud83d\ude32",
    athletic_shoe: "\ud83d\udc5f",
    atm: "\ud83c\udfe7",
    atom_symbol: "\u269b\ufe0f",
    avocado: "\ud83e\udd51",
    b: "\ud83c\udd71\ufe0f",
    baby: "\ud83d\udc76",
    baby_bottle: "\ud83c\udf7c",
    baby_chick: "\ud83d\udc24",
    baby_symbol: "\ud83d\udebc",
    back: "\ud83d\udd19",
    bacon: "\ud83e\udd53",
    badminton: "\ud83c\udff8",
    baggage_claim: "\ud83d\udec4",
    baguette_bread: "\ud83e\udd56",
    balance_scale: "\u2696\ufe0f",
    balloon: "\ud83c\udf88",
    ballot_box: "\ud83d\uddf3",
    ballot_box_with_check: "\u2611\ufe0f",
    bamboo: "\ud83c\udf8d",
    banana: "\ud83c\udf4c",
    bangbang: "\u203c\ufe0f",
    bank: "\ud83c\udfe6",
    bar_chart: "\ud83d\udcca",
    barber: "\ud83d\udc88",
    baseball: "\u26be\ufe0f",
    basketball: "\ud83c\udfc0",
    basketball_man: "\u26f9\ufe0f",
    basketball_woman: "\u26f9\ufe0f&zwj;\u2640\ufe0f",
    bat: "\ud83e\udd87",
    bath: "\ud83d\udec0",
    bathtub: "\ud83d\udec1",
    battery: "\ud83d\udd0b",
    beach_umbrella: "\ud83c\udfd6",
    bear: "\ud83d\udc3b",
    bed: "\ud83d\udecf",
    bee: "\ud83d\udc1d",
    beer: "\ud83c\udf7a",
    beers: "\ud83c\udf7b",
    beetle: "\ud83d\udc1e",
    beginner: "\ud83d\udd30",
    bell: "\ud83d\udd14",
    bellhop_bell: "\ud83d\udece",
    bento: "\ud83c\udf71",
    biking_man: "\ud83d\udeb4",
    bike: "\ud83d\udeb2",
    biking_woman: "\ud83d\udeb4&zwj;\u2640\ufe0f",
    bikini: "\ud83d\udc59",
    biohazard: "\u2623\ufe0f",
    bird: "\ud83d\udc26",
    birthday: "\ud83c\udf82",
    black_circle: "\u26ab\ufe0f",
    black_flag: "\ud83c\udff4",
    black_heart: "\ud83d\udda4",
    black_joker: "\ud83c\udccf",
    black_large_square: "\u2b1b\ufe0f",
    black_medium_small_square: "\u25fe\ufe0f",
    black_medium_square: "\u25fc\ufe0f",
    black_nib: "\u2712\ufe0f",
    black_small_square: "\u25aa\ufe0f",
    black_square_button: "\ud83d\udd32",
    blonde_man: "\ud83d\udc71",
    blonde_woman: "\ud83d\udc71&zwj;\u2640\ufe0f",
    blossom: "\ud83c\udf3c",
    blowfish: "\ud83d\udc21",
    blue_book: "\ud83d\udcd8",
    blue_car: "\ud83d\ude99",
    blue_heart: "\ud83d\udc99",
    blush: "\ud83d\ude0a",
    boar: "\ud83d\udc17",
    boat: "\u26f5\ufe0f",
    bomb: "\ud83d\udca3",
    book: "\ud83d\udcd6",
    bookmark: "\ud83d\udd16",
    bookmark_tabs: "\ud83d\udcd1",
    books: "\ud83d\udcda",
    boom: "\ud83d\udca5",
    boot: "\ud83d\udc62",
    bouquet: "\ud83d\udc90",
    bowing_man: "\ud83d\ude47",
    bow_and_arrow: "\ud83c\udff9",
    bowing_woman: "\ud83d\ude47&zwj;\u2640\ufe0f",
    bowling: "\ud83c\udfb3",
    boxing_glove: "\ud83e\udd4a",
    boy: "\ud83d\udc66",
    bread: "\ud83c\udf5e",
    bride_with_veil: "\ud83d\udc70",
    bridge_at_night: "\ud83c\udf09",
    briefcase: "\ud83d\udcbc",
    broken_heart: "\ud83d\udc94",
    bug: "\ud83d\udc1b",
    building_construction: "\ud83c\udfd7",
    bulb: "\ud83d\udca1",
    bullettrain_front: "\ud83d\ude85",
    bullettrain_side: "\ud83d\ude84",
    burrito: "\ud83c\udf2f",
    bus: "\ud83d\ude8c",
    business_suit_levitating: "\ud83d\udd74",
    busstop: "\ud83d\ude8f",
    bust_in_silhouette: "\ud83d\udc64",
    busts_in_silhouette: "\ud83d\udc65",
    butterfly: "\ud83e\udd8b",
    cactus: "\ud83c\udf35",
    cake: "\ud83c\udf70",
    calendar: "\ud83d\udcc6",
    call_me_hand: "\ud83e\udd19",
    calling: "\ud83d\udcf2",
    camel: "\ud83d\udc2b",
    camera: "\ud83d\udcf7",
    camera_flash: "\ud83d\udcf8",
    camping: "\ud83c\udfd5",
    cancer: "\u264b\ufe0f",
    candle: "\ud83d\udd6f",
    candy: "\ud83c\udf6c",
    canoe: "\ud83d\udef6",
    capital_abcd: "\ud83d\udd20",
    capricorn: "\u2651\ufe0f",
    car: "\ud83d\ude97",
    card_file_box: "\ud83d\uddc3",
    card_index: "\ud83d\udcc7",
    card_index_dividers: "\ud83d\uddc2",
    carousel_horse: "\ud83c\udfa0",
    carrot: "\ud83e\udd55",
    cat: "\ud83d\udc31",
    cat2: "\ud83d\udc08",
    cd: "\ud83d\udcbf",
    chains: "\u26d3",
    champagne: "\ud83c\udf7e",
    chart: "\ud83d\udcb9",
    chart_with_downwards_trend: "\ud83d\udcc9",
    chart_with_upwards_trend: "\ud83d\udcc8",
    checkered_flag: "\ud83c\udfc1",
    cheese: "\ud83e\uddc0",
    cherries: "\ud83c\udf52",
    cherry_blossom: "\ud83c\udf38",
    chestnut: "\ud83c\udf30",
    chicken: "\ud83d\udc14",
    children_crossing: "\ud83d\udeb8",
    chipmunk: "\ud83d\udc3f",
    chocolate_bar: "\ud83c\udf6b",
    christmas_tree: "\ud83c\udf84",
    church: "\u26ea\ufe0f",
    cinema: "\ud83c\udfa6",
    circus_tent: "\ud83c\udfaa",
    city_sunrise: "\ud83c\udf07",
    city_sunset: "\ud83c\udf06",
    cityscape: "\ud83c\udfd9",
    cl: "\ud83c\udd91",
    clamp: "\ud83d\udddc",
    clap: "\ud83d\udc4f",
    clapper: "\ud83c\udfac",
    classical_building: "\ud83c\udfdb",
    clinking_glasses: "\ud83e\udd42",
    clipboard: "\ud83d\udccb",
    clock1: "\ud83d\udd50",
    clock10: "\ud83d\udd59",
    clock1030: "\ud83d\udd65",
    clock11: "\ud83d\udd5a",
    clock1130: "\ud83d\udd66",
    clock12: "\ud83d\udd5b",
    clock1230: "\ud83d\udd67",
    clock130: "\ud83d\udd5c",
    clock2: "\ud83d\udd51",
    clock230: "\ud83d\udd5d",
    clock3: "\ud83d\udd52",
    clock330: "\ud83d\udd5e",
    clock4: "\ud83d\udd53",
    clock430: "\ud83d\udd5f",
    clock5: "\ud83d\udd54",
    clock530: "\ud83d\udd60",
    clock6: "\ud83d\udd55",
    clock630: "\ud83d\udd61",
    clock7: "\ud83d\udd56",
    clock730: "\ud83d\udd62",
    clock8: "\ud83d\udd57",
    clock830: "\ud83d\udd63",
    clock9: "\ud83d\udd58",
    clock930: "\ud83d\udd64",
    closed_book: "\ud83d\udcd5",
    closed_lock_with_key: "\ud83d\udd10",
    closed_umbrella: "\ud83c\udf02",
    cloud: "\u2601\ufe0f",
    cloud_with_lightning: "\ud83c\udf29",
    cloud_with_lightning_and_rain: "\u26c8",
    cloud_with_rain: "\ud83c\udf27",
    cloud_with_snow: "\ud83c\udf28",
    clown_face: "\ud83e\udd21",
    clubs: "\u2663\ufe0f",
    cocktail: "\ud83c\udf78",
    coffee: "\u2615\ufe0f",
    coffin: "\u26b0\ufe0f",
    cold_sweat: "\ud83d\ude30",
    comet: "\u2604\ufe0f",
    computer: "\ud83d\udcbb",
    computer_mouse: "\ud83d\uddb1",
    confetti_ball: "\ud83c\udf8a",
    confounded: "\ud83d\ude16",
    confused: "\ud83d\ude15",
    congratulations: "\u3297\ufe0f",
    construction: "\ud83d\udea7",
    construction_worker_man: "\ud83d\udc77",
    construction_worker_woman: "\ud83d\udc77&zwj;\u2640\ufe0f",
    control_knobs: "\ud83c\udf9b",
    convenience_store: "\ud83c\udfea",
    cookie: "\ud83c\udf6a",
    cool: "\ud83c\udd92",
    policeman: "\ud83d\udc6e",
    copyright: "\u00a9\ufe0f",
    corn: "\ud83c\udf3d",
    couch_and_lamp: "\ud83d\udecb",
    couple: "\ud83d\udc6b",
    couple_with_heart_woman_man: "\ud83d\udc91",
    couple_with_heart_man_man: "\ud83d\udc68&zwj;\u2764\ufe0f&zwj;\ud83d\udc68",
    couple_with_heart_woman_woman:
      "\ud83d\udc69&zwj;\u2764\ufe0f&zwj;\ud83d\udc69",
    couplekiss_man_man:
      "\ud83d\udc68&zwj;\u2764\ufe0f&zwj;\ud83d\udc8b&zwj;\ud83d\udc68",
    couplekiss_man_woman: "\ud83d\udc8f",
    couplekiss_woman_woman:
      "\ud83d\udc69&zwj;\u2764\ufe0f&zwj;\ud83d\udc8b&zwj;\ud83d\udc69",
    cow: "\ud83d\udc2e",
    cow2: "\ud83d\udc04",
    cowboy_hat_face: "\ud83e\udd20",
    crab: "\ud83e\udd80",
    crayon: "\ud83d\udd8d",
    credit_card: "\ud83d\udcb3",
    crescent_moon: "\ud83c\udf19",
    cricket: "\ud83c\udfcf",
    crocodile: "\ud83d\udc0a",
    croissant: "\ud83e\udd50",
    crossed_fingers: "\ud83e\udd1e",
    crossed_flags: "\ud83c\udf8c",
    crossed_swords: "\u2694\ufe0f",
    crown: "\ud83d\udc51",
    cry: "\ud83d\ude22",
    crying_cat_face: "\ud83d\ude3f",
    crystal_ball: "\ud83d\udd2e",
    cucumber: "\ud83e\udd52",
    cupid: "\ud83d\udc98",
    curly_loop: "\u27b0",
    currency_exchange: "\ud83d\udcb1",
    curry: "\ud83c\udf5b",
    custard: "\ud83c\udf6e",
    customs: "\ud83d\udec3",
    cyclone: "\ud83c\udf00",
    dagger: "\ud83d\udde1",
    dancer: "\ud83d\udc83",
    dancing_women: "\ud83d\udc6f",
    dancing_men: "\ud83d\udc6f&zwj;\u2642\ufe0f",
    dango: "\ud83c\udf61",
    dark_sunglasses: "\ud83d\udd76",
    dart: "\ud83c\udfaf",
    dash: "\ud83d\udca8",
    date: "\ud83d\udcc5",
    deciduous_tree: "\ud83c\udf33",
    deer: "\ud83e\udd8c",
    department_store: "\ud83c\udfec",
    derelict_house: "\ud83c\udfda",
    desert: "\ud83c\udfdc",
    desert_island: "\ud83c\udfdd",
    desktop_computer: "\ud83d\udda5",
    male_detective: "\ud83d\udd75\ufe0f",
    diamond_shape_with_a_dot_inside: "\ud83d\udca0",
    diamonds: "\u2666\ufe0f",
    disappointed: "\ud83d\ude1e",
    disappointed_relieved: "\ud83d\ude25",
    dizzy: "\ud83d\udcab",
    dizzy_face: "\ud83d\ude35",
    do_not_litter: "\ud83d\udeaf",
    dog: "\ud83d\udc36",
    dog2: "\ud83d\udc15",
    dollar: "\ud83d\udcb5",
    dolls: "\ud83c\udf8e",
    dolphin: "\ud83d\udc2c",
    door: "\ud83d\udeaa",
    doughnut: "\ud83c\udf69",
    dove: "\ud83d\udd4a",
    dragon: "\ud83d\udc09",
    dragon_face: "\ud83d\udc32",
    dress: "\ud83d\udc57",
    dromedary_camel: "\ud83d\udc2a",
    drooling_face: "\ud83e\udd24",
    droplet: "\ud83d\udca7",
    drum: "\ud83e\udd41",
    duck: "\ud83e\udd86",
    dvd: "\ud83d\udcc0",
    "e-mail": "\ud83d\udce7",
    eagle: "\ud83e\udd85",
    ear: "\ud83d\udc42",
    ear_of_rice: "\ud83c\udf3e",
    earth_africa: "\ud83c\udf0d",
    earth_americas: "\ud83c\udf0e",
    earth_asia: "\ud83c\udf0f",
    egg: "\ud83e\udd5a",
    eggplant: "\ud83c\udf46",
    eight_pointed_black_star: "\u2734\ufe0f",
    eight_spoked_asterisk: "\u2733\ufe0f",
    electric_plug: "\ud83d\udd0c",
    elephant: "\ud83d\udc18",
    email: "\u2709\ufe0f",
    end: "\ud83d\udd1a",
    envelope_with_arrow: "\ud83d\udce9",
    euro: "\ud83d\udcb6",
    european_castle: "\ud83c\udff0",
    european_post_office: "\ud83c\udfe4",
    evergreen_tree: "\ud83c\udf32",
    exclamation: "\u2757\ufe0f",
    expressionless: "\ud83d\ude11",
    eye: "\ud83d\udc41",
    eye_speech_bubble: "\ud83d\udc41&zwj;\ud83d\udde8",
    eyeglasses: "\ud83d\udc53",
    eyes: "\ud83d\udc40",
    face_with_head_bandage: "\ud83e\udd15",
    face_with_thermometer: "\ud83e\udd12",
    fist_oncoming: "\ud83d\udc4a",
    factory: "\ud83c\udfed",
    fallen_leaf: "\ud83c\udf42",
    family_man_woman_boy: "\ud83d\udc6a",
    family_man_boy: "\ud83d\udc68&zwj;\ud83d\udc66",
    family_man_boy_boy: "\ud83d\udc68&zwj;\ud83d\udc66&zwj;\ud83d\udc66",
    family_man_girl: "\ud83d\udc68&zwj;\ud83d\udc67",
    family_man_girl_boy: "\ud83d\udc68&zwj;\ud83d\udc67&zwj;\ud83d\udc66",
    family_man_girl_girl: "\ud83d\udc68&zwj;\ud83d\udc67&zwj;\ud83d\udc67",
    family_man_man_boy: "\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc66",
    family_man_man_boy_boy:
      "\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc66&zwj;\ud83d\udc66",
    family_man_man_girl: "\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc67",
    family_man_man_girl_boy:
      "\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc67&zwj;\ud83d\udc66",
    family_man_man_girl_girl:
      "\ud83d\udc68&zwj;\ud83d\udc68&zwj;\ud83d\udc67&zwj;\ud83d\udc67",
    family_man_woman_boy_boy:
      "\ud83d\udc68&zwj;\ud83d\udc69&zwj;\ud83d\udc66&zwj;\ud83d\udc66",
    family_man_woman_girl: "\ud83d\udc68&zwj;\ud83d\udc69&zwj;\ud83d\udc67",
    family_man_woman_girl_boy:
      "\ud83d\udc68&zwj;\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc66",
    family_man_woman_girl_girl:
      "\ud83d\udc68&zwj;\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc67",
    family_woman_boy: "\ud83d\udc69&zwj;\ud83d\udc66",
    family_woman_boy_boy: "\ud83d\udc69&zwj;\ud83d\udc66&zwj;\ud83d\udc66",
    family_woman_girl: "\ud83d\udc69&zwj;\ud83d\udc67",
    family_woman_girl_boy: "\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc66",
    family_woman_girl_girl: "\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc67",
    family_woman_woman_boy: "\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc66",
    family_woman_woman_boy_boy:
      "\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc66&zwj;\ud83d\udc66",
    family_woman_woman_girl: "\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc67",
    family_woman_woman_girl_boy:
      "\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc66",
    family_woman_woman_girl_girl:
      "\ud83d\udc69&zwj;\ud83d\udc69&zwj;\ud83d\udc67&zwj;\ud83d\udc67",
    fast_forward: "\u23e9",
    fax: "\ud83d\udce0",
    fearful: "\ud83d\ude28",
    feet: "\ud83d\udc3e",
    female_detective: "\ud83d\udd75\ufe0f&zwj;\u2640\ufe0f",
    ferris_wheel: "\ud83c\udfa1",
    ferry: "\u26f4",
    field_hockey: "\ud83c\udfd1",
    file_cabinet: "\ud83d\uddc4",
    file_folder: "\ud83d\udcc1",
    film_projector: "\ud83d\udcfd",
    film_strip: "\ud83c\udf9e",
    fire: "\ud83d\udd25",
    fire_engine: "\ud83d\ude92",
    fireworks: "\ud83c\udf86",
    first_quarter_moon: "\ud83c\udf13",
    first_quarter_moon_with_face: "\ud83c\udf1b",
    fish: "\ud83d\udc1f",
    fish_cake: "\ud83c\udf65",
    fishing_pole_and_fish: "\ud83c\udfa3",
    fist_raised: "\u270a",
    fist_left: "\ud83e\udd1b",
    fist_right: "\ud83e\udd1c",
    flags: "\ud83c\udf8f",
    flashlight: "\ud83d\udd26",
    fleur_de_lis: "\u269c\ufe0f",
    flight_arrival: "\ud83d\udeec",
    flight_departure: "\ud83d\udeeb",
    floppy_disk: "\ud83d\udcbe",
    flower_playing_cards: "\ud83c\udfb4",
    flushed: "\ud83d\ude33",
    fog: "\ud83c\udf2b",
    foggy: "\ud83c\udf01",
    football: "\ud83c\udfc8",
    footprints: "\ud83d\udc63",
    fork_and_knife: "\ud83c\udf74",
    fountain: "\u26f2\ufe0f",
    fountain_pen: "\ud83d\udd8b",
    four_leaf_clover: "\ud83c\udf40",
    fox_face: "\ud83e\udd8a",
    framed_picture: "\ud83d\uddbc",
    free: "\ud83c\udd93",
    fried_egg: "\ud83c\udf73",
    fried_shrimp: "\ud83c\udf64",
    fries: "\ud83c\udf5f",
    frog: "\ud83d\udc38",
    frowning: "\ud83d\ude26",
    frowning_face: "\u2639\ufe0f",
    frowning_man: "\ud83d\ude4d&zwj;\u2642\ufe0f",
    frowning_woman: "\ud83d\ude4d",
    middle_finger: "\ud83d\udd95",
    fuelpump: "\u26fd\ufe0f",
    full_moon: "\ud83c\udf15",
    full_moon_with_face: "\ud83c\udf1d",
    funeral_urn: "\u26b1\ufe0f",
    game_die: "\ud83c\udfb2",
    gear: "\u2699\ufe0f",
    gem: "\ud83d\udc8e",
    gemini: "\u264a\ufe0f",
    ghost: "\ud83d\udc7b",
    gift: "\ud83c\udf81",
    gift_heart: "\ud83d\udc9d",
    girl: "\ud83d\udc67",
    globe_with_meridians: "\ud83c\udf10",
    goal_net: "\ud83e\udd45",
    goat: "\ud83d\udc10",
    golf: "\u26f3\ufe0f",
    golfing_man: "\ud83c\udfcc\ufe0f",
    golfing_woman: "\ud83c\udfcc\ufe0f&zwj;\u2640\ufe0f",
    gorilla: "\ud83e\udd8d",
    grapes: "\ud83c\udf47",
    green_apple: "\ud83c\udf4f",
    green_book: "\ud83d\udcd7",
    green_heart: "\ud83d\udc9a",
    green_salad: "\ud83e\udd57",
    grey_exclamation: "\u2755",
    grey_question: "\u2754",
    grimacing: "\ud83d\ude2c",
    grin: "\ud83d\ude01",
    grinning: "\ud83d\ude00",
    guardsman: "\ud83d\udc82",
    guardswoman: "\ud83d\udc82&zwj;\u2640\ufe0f",
    guitar: "\ud83c\udfb8",
    gun: "\ud83d\udd2b",
    haircut_woman: "\ud83d\udc87",
    haircut_man: "\ud83d\udc87&zwj;\u2642\ufe0f",
    hamburger: "\ud83c\udf54",
    hammer: "\ud83d\udd28",
    hammer_and_pick: "\u2692",
    hammer_and_wrench: "\ud83d\udee0",
    hamster: "\ud83d\udc39",
    hand: "\u270b",
    handbag: "\ud83d\udc5c",
    handshake: "\ud83e\udd1d",
    hankey: "\ud83d\udca9",
    hatched_chick: "\ud83d\udc25",
    hatching_chick: "\ud83d\udc23",
    headphones: "\ud83c\udfa7",
    hear_no_evil: "\ud83d\ude49",
    heart: "\u2764\ufe0f",
    heart_decoration: "\ud83d\udc9f",
    heart_eyes: "\ud83d\ude0d",
    heart_eyes_cat: "\ud83d\ude3b",
    heartbeat: "\ud83d\udc93",
    heartpulse: "\ud83d\udc97",
    hearts: "\u2665\ufe0f",
    heavy_check_mark: "\u2714\ufe0f",
    heavy_division_sign: "\u2797",
    heavy_dollar_sign: "\ud83d\udcb2",
    heavy_heart_exclamation: "\u2763\ufe0f",
    heavy_minus_sign: "\u2796",
    heavy_multiplication_x: "\u2716\ufe0f",
    heavy_plus_sign: "\u2795",
    helicopter: "\ud83d\ude81",
    herb: "\ud83c\udf3f",
    hibiscus: "\ud83c\udf3a",
    high_brightness: "\ud83d\udd06",
    high_heel: "\ud83d\udc60",
    hocho: "\ud83d\udd2a",
    hole: "\ud83d\udd73",
    honey_pot: "\ud83c\udf6f",
    horse: "\ud83d\udc34",
    horse_racing: "\ud83c\udfc7",
    hospital: "\ud83c\udfe5",
    hot_pepper: "\ud83c\udf36",
    hotdog: "\ud83c\udf2d",
    hotel: "\ud83c\udfe8",
    hotsprings: "\u2668\ufe0f",
    hourglass: "\u231b\ufe0f",
    hourglass_flowing_sand: "\u23f3",
    house: "\ud83c\udfe0",
    house_with_garden: "\ud83c\udfe1",
    houses: "\ud83c\udfd8",
    hugs: "\ud83e\udd17",
    hushed: "\ud83d\ude2f",
    ice_cream: "\ud83c\udf68",
    ice_hockey: "\ud83c\udfd2",
    ice_skate: "\u26f8",
    icecream: "\ud83c\udf66",
    id: "\ud83c\udd94",
    ideograph_advantage: "\ud83c\ude50",
    imp: "\ud83d\udc7f",
    inbox_tray: "\ud83d\udce5",
    incoming_envelope: "\ud83d\udce8",
    tipping_hand_woman: "\ud83d\udc81",
    information_source: "\u2139\ufe0f",
    innocent: "\ud83d\ude07",
    interrobang: "\u2049\ufe0f",
    iphone: "\ud83d\udcf1",
    izakaya_lantern: "\ud83c\udfee",
    jack_o_lantern: "\ud83c\udf83",
    japan: "\ud83d\uddfe",
    japanese_castle: "\ud83c\udfef",
    japanese_goblin: "\ud83d\udc7a",
    japanese_ogre: "\ud83d\udc79",
    jeans: "\ud83d\udc56",
    joy: "\ud83d\ude02",
    joy_cat: "\ud83d\ude39",
    joystick: "\ud83d\udd79",
    kaaba: "\ud83d\udd4b",
    key: "\ud83d\udd11",
    keyboard: "\u2328\ufe0f",
    keycap_ten: "\ud83d\udd1f",
    kick_scooter: "\ud83d\udef4",
    kimono: "\ud83d\udc58",
    kiss: "\ud83d\udc8b",
    kissing: "\ud83d\ude17",
    kissing_cat: "\ud83d\ude3d",
    kissing_closed_eyes: "\ud83d\ude1a",
    kissing_heart: "\ud83d\ude18",
    kissing_smiling_eyes: "\ud83d\ude19",
    kiwi_fruit: "\ud83e\udd5d",
    koala: "\ud83d\udc28",
    koko: "\ud83c\ude01",
    label: "\ud83c\udff7",
    large_blue_circle: "\ud83d\udd35",
    large_blue_diamond: "\ud83d\udd37",
    large_orange_diamond: "\ud83d\udd36",
    last_quarter_moon: "\ud83c\udf17",
    last_quarter_moon_with_face: "\ud83c\udf1c",
    latin_cross: "\u271d\ufe0f",
    laughing: "\ud83d\ude06",
    leaves: "\ud83c\udf43",
    ledger: "\ud83d\udcd2",
    left_luggage: "\ud83d\udec5",
    left_right_arrow: "\u2194\ufe0f",
    leftwards_arrow_with_hook: "\u21a9\ufe0f",
    lemon: "\ud83c\udf4b",
    leo: "\u264c\ufe0f",
    leopard: "\ud83d\udc06",
    level_slider: "\ud83c\udf9a",
    libra: "\u264e\ufe0f",
    light_rail: "\ud83d\ude88",
    link: "\ud83d\udd17",
    lion: "\ud83e\udd81",
    lips: "\ud83d\udc44",
    lipstick: "\ud83d\udc84",
    lizard: "\ud83e\udd8e",
    lock: "\ud83d\udd12",
    lock_with_ink_pen: "\ud83d\udd0f",
    lollipop: "\ud83c\udf6d",
    loop: "\u27bf",
    loud_sound: "\ud83d\udd0a",
    loudspeaker: "\ud83d\udce2",
    love_hotel: "\ud83c\udfe9",
    love_letter: "\ud83d\udc8c",
    low_brightness: "\ud83d\udd05",
    lying_face: "\ud83e\udd25",
    m: "\u24c2\ufe0f",
    mag: "\ud83d\udd0d",
    mag_right: "\ud83d\udd0e",
    mahjong: "\ud83c\udc04\ufe0f",
    mailbox: "\ud83d\udceb",
    mailbox_closed: "\ud83d\udcea",
    mailbox_with_mail: "\ud83d\udcec",
    mailbox_with_no_mail: "\ud83d\udced",
    man: "\ud83d\udc68",
    man_artist: "\ud83d\udc68&zwj;\ud83c\udfa8",
    man_astronaut: "\ud83d\udc68&zwj;\ud83d\ude80",
    man_cartwheeling: "\ud83e\udd38&zwj;\u2642\ufe0f",
    man_cook: "\ud83d\udc68&zwj;\ud83c\udf73",
    man_dancing: "\ud83d\udd7a",
    man_facepalming: "\ud83e\udd26&zwj;\u2642\ufe0f",
    man_factory_worker: "\ud83d\udc68&zwj;\ud83c\udfed",
    man_farmer: "\ud83d\udc68&zwj;\ud83c\udf3e",
    man_firefighter: "\ud83d\udc68&zwj;\ud83d\ude92",
    man_health_worker: "\ud83d\udc68&zwj;\u2695\ufe0f",
    man_in_tuxedo: "\ud83e\udd35",
    man_judge: "\ud83d\udc68&zwj;\u2696\ufe0f",
    man_juggling: "\ud83e\udd39&zwj;\u2642\ufe0f",
    man_mechanic: "\ud83d\udc68&zwj;\ud83d\udd27",
    man_office_worker: "\ud83d\udc68&zwj;\ud83d\udcbc",
    man_pilot: "\ud83d\udc68&zwj;\u2708\ufe0f",
    man_playing_handball: "\ud83e\udd3e&zwj;\u2642\ufe0f",
    man_playing_water_polo: "\ud83e\udd3d&zwj;\u2642\ufe0f",
    man_scientist: "\ud83d\udc68&zwj;\ud83d\udd2c",
    man_shrugging: "\ud83e\udd37&zwj;\u2642\ufe0f",
    man_singer: "\ud83d\udc68&zwj;\ud83c\udfa4",
    man_student: "\ud83d\udc68&zwj;\ud83c\udf93",
    man_teacher: "\ud83d\udc68&zwj;\ud83c\udfeb",
    man_technologist: "\ud83d\udc68&zwj;\ud83d\udcbb",
    man_with_gua_pi_mao: "\ud83d\udc72",
    man_with_turban: "\ud83d\udc73",
    tangerine: "\ud83c\udf4a",
    mans_shoe: "\ud83d\udc5e",
    mantelpiece_clock: "\ud83d\udd70",
    maple_leaf: "\ud83c\udf41",
    martial_arts_uniform: "\ud83e\udd4b",
    mask: "\ud83d\ude37",
    massage_woman: "\ud83d\udc86",
    massage_man: "\ud83d\udc86&zwj;\u2642\ufe0f",
    meat_on_bone: "\ud83c\udf56",
    medal_military: "\ud83c\udf96",
    medal_sports: "\ud83c\udfc5",
    mega: "\ud83d\udce3",
    melon: "\ud83c\udf48",
    memo: "\ud83d\udcdd",
    men_wrestling: "\ud83e\udd3c&zwj;\u2642\ufe0f",
    menorah: "\ud83d\udd4e",
    mens: "\ud83d\udeb9",
    metal: "\ud83e\udd18",
    metro: "\ud83d\ude87",
    microphone: "\ud83c\udfa4",
    microscope: "\ud83d\udd2c",
    milk_glass: "\ud83e\udd5b",
    milky_way: "\ud83c\udf0c",
    minibus: "\ud83d\ude90",
    minidisc: "\ud83d\udcbd",
    mobile_phone_off: "\ud83d\udcf4",
    money_mouth_face: "\ud83e\udd11",
    money_with_wings: "\ud83d\udcb8",
    moneybag: "\ud83d\udcb0",
    monkey: "\ud83d\udc12",
    monkey_face: "\ud83d\udc35",
    monorail: "\ud83d\ude9d",
    moon: "\ud83c\udf14",
    mortar_board: "\ud83c\udf93",
    mosque: "\ud83d\udd4c",
    motor_boat: "\ud83d\udee5",
    motor_scooter: "\ud83d\udef5",
    motorcycle: "\ud83c\udfcd",
    motorway: "\ud83d\udee3",
    mount_fuji: "\ud83d\uddfb",
    mountain: "\u26f0",
    mountain_biking_man: "\ud83d\udeb5",
    mountain_biking_woman: "\ud83d\udeb5&zwj;\u2640\ufe0f",
    mountain_cableway: "\ud83d\udea0",
    mountain_railway: "\ud83d\ude9e",
    mountain_snow: "\ud83c\udfd4",
    mouse: "\ud83d\udc2d",
    mouse2: "\ud83d\udc01",
    movie_camera: "\ud83c\udfa5",
    moyai: "\ud83d\uddff",
    mrs_claus: "\ud83e\udd36",
    muscle: "\ud83d\udcaa",
    mushroom: "\ud83c\udf44",
    musical_keyboard: "\ud83c\udfb9",
    musical_note: "\ud83c\udfb5",
    musical_score: "\ud83c\udfbc",
    mute: "\ud83d\udd07",
    nail_care: "\ud83d\udc85",
    name_badge: "\ud83d\udcdb",
    national_park: "\ud83c\udfde",
    nauseated_face: "\ud83e\udd22",
    necktie: "\ud83d\udc54",
    negative_squared_cross_mark: "\u274e",
    nerd_face: "\ud83e\udd13",
    neutral_face: "\ud83d\ude10",
    new: "\ud83c\udd95",
    new_moon: "\ud83c\udf11",
    new_moon_with_face: "\ud83c\udf1a",
    newspaper: "\ud83d\udcf0",
    newspaper_roll: "\ud83d\uddde",
    next_track_button: "\u23ed",
    ng: "\ud83c\udd96",
    no_good_man: "\ud83d\ude45&zwj;\u2642\ufe0f",
    no_good_woman: "\ud83d\ude45",
    night_with_stars: "\ud83c\udf03",
    no_bell: "\ud83d\udd15",
    no_bicycles: "\ud83d\udeb3",
    no_entry: "\u26d4\ufe0f",
    no_entry_sign: "\ud83d\udeab",
    no_mobile_phones: "\ud83d\udcf5",
    no_mouth: "\ud83d\ude36",
    no_pedestrians: "\ud83d\udeb7",
    no_smoking: "\ud83d\udead",
    "non-potable_water": "\ud83d\udeb1",
    nose: "\ud83d\udc43",
    notebook: "\ud83d\udcd3",
    notebook_with_decorative_cover: "\ud83d\udcd4",
    notes: "\ud83c\udfb6",
    nut_and_bolt: "\ud83d\udd29",
    o: "\u2b55\ufe0f",
    o2: "\ud83c\udd7e\ufe0f",
    ocean: "\ud83c\udf0a",
    octopus: "\ud83d\udc19",
    oden: "\ud83c\udf62",
    office: "\ud83c\udfe2",
    oil_drum: "\ud83d\udee2",
    ok: "\ud83c\udd97",
    ok_hand: "\ud83d\udc4c",
    ok_man: "\ud83d\ude46&zwj;\u2642\ufe0f",
    ok_woman: "\ud83d\ude46",
    old_key: "\ud83d\udddd",
    older_man: "\ud83d\udc74",
    older_woman: "\ud83d\udc75",
    om: "\ud83d\udd49",
    on: "\ud83d\udd1b",
    oncoming_automobile: "\ud83d\ude98",
    oncoming_bus: "\ud83d\ude8d",
    oncoming_police_car: "\ud83d\ude94",
    oncoming_taxi: "\ud83d\ude96",
    open_file_folder: "\ud83d\udcc2",
    open_hands: "\ud83d\udc50",
    open_mouth: "\ud83d\ude2e",
    open_umbrella: "\u2602\ufe0f",
    ophiuchus: "\u26ce",
    orange_book: "\ud83d\udcd9",
    orthodox_cross: "\u2626\ufe0f",
    outbox_tray: "\ud83d\udce4",
    owl: "\ud83e\udd89",
    ox: "\ud83d\udc02",
    package: "\ud83d\udce6",
    page_facing_up: "\ud83d\udcc4",
    page_with_curl: "\ud83d\udcc3",
    pager: "\ud83d\udcdf",
    paintbrush: "\ud83d\udd8c",
    palm_tree: "\ud83c\udf34",
    pancakes: "\ud83e\udd5e",
    panda_face: "\ud83d\udc3c",
    paperclip: "\ud83d\udcce",
    paperclips: "\ud83d\udd87",
    parasol_on_ground: "\u26f1",
    parking: "\ud83c\udd7f\ufe0f",
    part_alternation_mark: "\u303d\ufe0f",
    partly_sunny: "\u26c5\ufe0f",
    passenger_ship: "\ud83d\udef3",
    passport_control: "\ud83d\udec2",
    pause_button: "\u23f8",
    peace_symbol: "\u262e\ufe0f",
    peach: "\ud83c\udf51",
    peanuts: "\ud83e\udd5c",
    pear: "\ud83c\udf50",
    pen: "\ud83d\udd8a",
    pencil2: "\u270f\ufe0f",
    penguin: "\ud83d\udc27",
    pensive: "\ud83d\ude14",
    performing_arts: "\ud83c\udfad",
    persevere: "\ud83d\ude23",
    person_fencing: "\ud83e\udd3a",
    pouting_woman: "\ud83d\ude4e",
    phone: "\u260e\ufe0f",
    pick: "\u26cf",
    pig: "\ud83d\udc37",
    pig2: "\ud83d\udc16",
    pig_nose: "\ud83d\udc3d",
    pill: "\ud83d\udc8a",
    pineapple: "\ud83c\udf4d",
    ping_pong: "\ud83c\udfd3",
    pisces: "\u2653\ufe0f",
    pizza: "\ud83c\udf55",
    place_of_worship: "\ud83d\uded0",
    plate_with_cutlery: "\ud83c\udf7d",
    play_or_pause_button: "\u23ef",
    point_down: "\ud83d\udc47",
    point_left: "\ud83d\udc48",
    point_right: "\ud83d\udc49",
    point_up: "\u261d\ufe0f",
    point_up_2: "\ud83d\udc46",
    police_car: "\ud83d\ude93",
    policewoman: "\ud83d\udc6e&zwj;\u2640\ufe0f",
    poodle: "\ud83d\udc29",
    popcorn: "\ud83c\udf7f",
    post_office: "\ud83c\udfe3",
    postal_horn: "\ud83d\udcef",
    postbox: "\ud83d\udcee",
    potable_water: "\ud83d\udeb0",
    potato: "\ud83e\udd54",
    pouch: "\ud83d\udc5d",
    poultry_leg: "\ud83c\udf57",
    pound: "\ud83d\udcb7",
    rage: "\ud83d\ude21",
    pouting_cat: "\ud83d\ude3e",
    pouting_man: "\ud83d\ude4e&zwj;\u2642\ufe0f",
    pray: "\ud83d\ude4f",
    prayer_beads: "\ud83d\udcff",
    pregnant_woman: "\ud83e\udd30",
    previous_track_button: "\u23ee",
    prince: "\ud83e\udd34",
    princess: "\ud83d\udc78",
    printer: "\ud83d\udda8",
    purple_heart: "\ud83d\udc9c",
    purse: "\ud83d\udc5b",
    pushpin: "\ud83d\udccc",
    put_litter_in_its_place: "\ud83d\udeae",
    question: "\u2753",
    rabbit: "\ud83d\udc30",
    rabbit2: "\ud83d\udc07",
    racehorse: "\ud83d\udc0e",
    racing_car: "\ud83c\udfce",
    radio: "\ud83d\udcfb",
    radio_button: "\ud83d\udd18",
    radioactive: "\u2622\ufe0f",
    railway_car: "\ud83d\ude83",
    railway_track: "\ud83d\udee4",
    rainbow: "\ud83c\udf08",
    rainbow_flag: "\ud83c\udff3\ufe0f&zwj;\ud83c\udf08",
    raised_back_of_hand: "\ud83e\udd1a",
    raised_hand_with_fingers_splayed: "\ud83d\udd90",
    raised_hands: "\ud83d\ude4c",
    raising_hand_woman: "\ud83d\ude4b",
    raising_hand_man: "\ud83d\ude4b&zwj;\u2642\ufe0f",
    ram: "\ud83d\udc0f",
    ramen: "\ud83c\udf5c",
    rat: "\ud83d\udc00",
    record_button: "\u23fa",
    recycle: "\u267b\ufe0f",
    red_circle: "\ud83d\udd34",
    registered: "\u00ae\ufe0f",
    relaxed: "\u263a\ufe0f",
    relieved: "\ud83d\ude0c",
    reminder_ribbon: "\ud83c\udf97",
    repeat: "\ud83d\udd01",
    repeat_one: "\ud83d\udd02",
    rescue_worker_helmet: "\u26d1",
    restroom: "\ud83d\udebb",
    revolving_hearts: "\ud83d\udc9e",
    rewind: "\u23ea",
    rhinoceros: "\ud83e\udd8f",
    ribbon: "\ud83c\udf80",
    rice: "\ud83c\udf5a",
    rice_ball: "\ud83c\udf59",
    rice_cracker: "\ud83c\udf58",
    rice_scene: "\ud83c\udf91",
    right_anger_bubble: "\ud83d\uddef",
    ring: "\ud83d\udc8d",
    robot: "\ud83e\udd16",
    rocket: "\ud83d\ude80",
    rofl: "\ud83e\udd23",
    roll_eyes: "\ud83d\ude44",
    roller_coaster: "\ud83c\udfa2",
    rooster: "\ud83d\udc13",
    rose: "\ud83c\udf39",
    rosette: "\ud83c\udff5",
    rotating_light: "\ud83d\udea8",
    round_pushpin: "\ud83d\udccd",
    rowing_man: "\ud83d\udea3",
    rowing_woman: "\ud83d\udea3&zwj;\u2640\ufe0f",
    rugby_football: "\ud83c\udfc9",
    running_man: "\ud83c\udfc3",
    running_shirt_with_sash: "\ud83c\udfbd",
    running_woman: "\ud83c\udfc3&zwj;\u2640\ufe0f",
    sa: "\ud83c\ude02\ufe0f",
    sagittarius: "\u2650\ufe0f",
    sake: "\ud83c\udf76",
    sandal: "\ud83d\udc61",
    santa: "\ud83c\udf85",
    satellite: "\ud83d\udce1",
    saxophone: "\ud83c\udfb7",
    school: "\ud83c\udfeb",
    school_satchel: "\ud83c\udf92",
    scissors: "\u2702\ufe0f",
    scorpion: "\ud83e\udd82",
    scorpius: "\u264f\ufe0f",
    scream: "\ud83d\ude31",
    scream_cat: "\ud83d\ude40",
    scroll: "\ud83d\udcdc",
    seat: "\ud83d\udcba",
    secret: "\u3299\ufe0f",
    see_no_evil: "\ud83d\ude48",
    seedling: "\ud83c\udf31",
    selfie: "\ud83e\udd33",
    shallow_pan_of_food: "\ud83e\udd58",
    shamrock: "\u2618\ufe0f",
    shark: "\ud83e\udd88",
    shaved_ice: "\ud83c\udf67",
    sheep: "\ud83d\udc11",
    shell: "\ud83d\udc1a",
    shield: "\ud83d\udee1",
    shinto_shrine: "\u26e9",
    ship: "\ud83d\udea2",
    shirt: "\ud83d\udc55",
    shopping: "\ud83d\udecd",
    shopping_cart: "\ud83d\uded2",
    shower: "\ud83d\udebf",
    shrimp: "\ud83e\udd90",
    signal_strength: "\ud83d\udcf6",
    six_pointed_star: "\ud83d\udd2f",
    ski: "\ud83c\udfbf",
    skier: "\u26f7",
    skull: "\ud83d\udc80",
    skull_and_crossbones: "\u2620\ufe0f",
    sleeping: "\ud83d\ude34",
    sleeping_bed: "\ud83d\udecc",
    sleepy: "\ud83d\ude2a",
    slightly_frowning_face: "\ud83d\ude41",
    slightly_smiling_face: "\ud83d\ude42",
    slot_machine: "\ud83c\udfb0",
    small_airplane: "\ud83d\udee9",
    small_blue_diamond: "\ud83d\udd39",
    small_orange_diamond: "\ud83d\udd38",
    small_red_triangle: "\ud83d\udd3a",
    small_red_triangle_down: "\ud83d\udd3b",
    smile: "\ud83d\ude04",
    smile_cat: "\ud83d\ude38",
    smiley: "\ud83d\ude03",
    smiley_cat: "\ud83d\ude3a",
    smiling_imp: "\ud83d\ude08",
    smirk: "\ud83d\ude0f",
    smirk_cat: "\ud83d\ude3c",
    smoking: "\ud83d\udeac",
    snail: "\ud83d\udc0c",
    snake: "\ud83d\udc0d",
    sneezing_face: "\ud83e\udd27",
    snowboarder: "\ud83c\udfc2",
    snowflake: "\u2744\ufe0f",
    snowman: "\u26c4\ufe0f",
    snowman_with_snow: "\u2603\ufe0f",
    sob: "\ud83d\ude2d",
    soccer: "\u26bd\ufe0f",
    soon: "\ud83d\udd1c",
    sos: "\ud83c\udd98",
    sound: "\ud83d\udd09",
    space_invader: "\ud83d\udc7e",
    spades: "\u2660\ufe0f",
    spaghetti: "\ud83c\udf5d",
    sparkle: "\u2747\ufe0f",
    sparkler: "\ud83c\udf87",
    sparkles: "\u2728",
    sparkling_heart: "\ud83d\udc96",
    speak_no_evil: "\ud83d\ude4a",
    speaker: "\ud83d\udd08",
    speaking_head: "\ud83d\udde3",
    speech_balloon: "\ud83d\udcac",
    speedboat: "\ud83d\udea4",
    spider: "\ud83d\udd77",
    spider_web: "\ud83d\udd78",
    spiral_calendar: "\ud83d\uddd3",
    spiral_notepad: "\ud83d\uddd2",
    spoon: "\ud83e\udd44",
    squid: "\ud83e\udd91",
    stadium: "\ud83c\udfdf",
    star: "\u2b50\ufe0f",
    star2: "\ud83c\udf1f",
    star_and_crescent: "\u262a\ufe0f",
    star_of_david: "\u2721\ufe0f",
    stars: "\ud83c\udf20",
    station: "\ud83d\ude89",
    statue_of_liberty: "\ud83d\uddfd",
    steam_locomotive: "\ud83d\ude82",
    stew: "\ud83c\udf72",
    stop_button: "\u23f9",
    stop_sign: "\ud83d\uded1",
    stopwatch: "\u23f1",
    straight_ruler: "\ud83d\udccf",
    strawberry: "\ud83c\udf53",
    stuck_out_tongue: "\ud83d\ude1b",
    stuck_out_tongue_closed_eyes: "\ud83d\ude1d",
    stuck_out_tongue_winking_eye: "\ud83d\ude1c",
    studio_microphone: "\ud83c\udf99",
    stuffed_flatbread: "\ud83e\udd59",
    sun_behind_large_cloud: "\ud83c\udf25",
    sun_behind_rain_cloud: "\ud83c\udf26",
    sun_behind_small_cloud: "\ud83c\udf24",
    sun_with_face: "\ud83c\udf1e",
    sunflower: "\ud83c\udf3b",
    sunglasses: "\ud83d\ude0e",
    sunny: "\u2600\ufe0f",
    sunrise: "\ud83c\udf05",
    sunrise_over_mountains: "\ud83c\udf04",
    surfing_man: "\ud83c\udfc4",
    surfing_woman: "\ud83c\udfc4&zwj;\u2640\ufe0f",
    sushi: "\ud83c\udf63",
    suspension_railway: "\ud83d\ude9f",
    sweat: "\ud83d\ude13",
    sweat_drops: "\ud83d\udca6",
    sweat_smile: "\ud83d\ude05",
    sweet_potato: "\ud83c\udf60",
    swimming_man: "\ud83c\udfca",
    swimming_woman: "\ud83c\udfca&zwj;\u2640\ufe0f",
    symbols: "\ud83d\udd23",
    synagogue: "\ud83d\udd4d",
    syringe: "\ud83d\udc89",
    taco: "\ud83c\udf2e",
    tada: "\ud83c\udf89",
    tanabata_tree: "\ud83c\udf8b",
    taurus: "\u2649\ufe0f",
    taxi: "\ud83d\ude95",
    tea: "\ud83c\udf75",
    telephone_receiver: "\ud83d\udcde",
    telescope: "\ud83d\udd2d",
    tennis: "\ud83c\udfbe",
    tent: "\u26fa\ufe0f",
    thermometer: "\ud83c\udf21",
    thinking: "\ud83e\udd14",
    thought_balloon: "\ud83d\udcad",
    ticket: "\ud83c\udfab",
    tickets: "\ud83c\udf9f",
    tiger: "\ud83d\udc2f",
    tiger2: "\ud83d\udc05",
    timer_clock: "\u23f2",
    tipping_hand_man: "\ud83d\udc81&zwj;\u2642\ufe0f",
    tired_face: "\ud83d\ude2b",
    tm: "\u2122\ufe0f",
    toilet: "\ud83d\udebd",
    tokyo_tower: "\ud83d\uddfc",
    tomato: "\ud83c\udf45",
    tongue: "\ud83d\udc45",
    top: "\ud83d\udd1d",
    tophat: "\ud83c\udfa9",
    tornado: "\ud83c\udf2a",
    trackball: "\ud83d\uddb2",
    tractor: "\ud83d\ude9c",
    traffic_light: "\ud83d\udea5",
    train: "\ud83d\ude8b",
    train2: "\ud83d\ude86",
    tram: "\ud83d\ude8a",
    triangular_flag_on_post: "\ud83d\udea9",
    triangular_ruler: "\ud83d\udcd0",
    trident: "\ud83d\udd31",
    triumph: "\ud83d\ude24",
    trolleybus: "\ud83d\ude8e",
    trophy: "\ud83c\udfc6",
    tropical_drink: "\ud83c\udf79",
    tropical_fish: "\ud83d\udc20",
    truck: "\ud83d\ude9a",
    trumpet: "\ud83c\udfba",
    tulip: "\ud83c\udf37",
    tumbler_glass: "\ud83e\udd43",
    turkey: "\ud83e\udd83",
    turtle: "\ud83d\udc22",
    tv: "\ud83d\udcfa",
    twisted_rightwards_arrows: "\ud83d\udd00",
    two_hearts: "\ud83d\udc95",
    two_men_holding_hands: "\ud83d\udc6c",
    two_women_holding_hands: "\ud83d\udc6d",
    u5272: "\ud83c\ude39",
    u5408: "\ud83c\ude34",
    u55b6: "\ud83c\ude3a",
    u6307: "\ud83c\ude2f\ufe0f",
    u6708: "\ud83c\ude37\ufe0f",
    u6709: "\ud83c\ude36",
    u6e80: "\ud83c\ude35",
    u7121: "\ud83c\ude1a\ufe0f",
    u7533: "\ud83c\ude38",
    u7981: "\ud83c\ude32",
    u7a7a: "\ud83c\ude33",
    umbrella: "\u2614\ufe0f",
    unamused: "\ud83d\ude12",
    underage: "\ud83d\udd1e",
    unicorn: "\ud83e\udd84",
    unlock: "\ud83d\udd13",
    up: "\ud83c\udd99",
    upside_down_face: "\ud83d\ude43",
    v: "\u270c\ufe0f",
    vertical_traffic_light: "\ud83d\udea6",
    vhs: "\ud83d\udcfc",
    vibration_mode: "\ud83d\udcf3",
    video_camera: "\ud83d\udcf9",
    video_game: "\ud83c\udfae",
    violin: "\ud83c\udfbb",
    virgo: "\u264d\ufe0f",
    volcano: "\ud83c\udf0b",
    volleyball: "\ud83c\udfd0",
    vs: "\ud83c\udd9a",
    vulcan_salute: "\ud83d\udd96",
    walking_man: "\ud83d\udeb6",
    walking_woman: "\ud83d\udeb6&zwj;\u2640\ufe0f",
    waning_crescent_moon: "\ud83c\udf18",
    waning_gibbous_moon: "\ud83c\udf16",
    warning: "\u26a0\ufe0f",
    wastebasket: "\ud83d\uddd1",
    watch: "\u231a\ufe0f",
    water_buffalo: "\ud83d\udc03",
    watermelon: "\ud83c\udf49",
    wave: "\ud83d\udc4b",
    wavy_dash: "\u3030\ufe0f",
    waxing_crescent_moon: "\ud83c\udf12",
    wc: "\ud83d\udebe",
    weary: "\ud83d\ude29",
    wedding: "\ud83d\udc92",
    weight_lifting_man: "\ud83c\udfcb\ufe0f",
    weight_lifting_woman: "\ud83c\udfcb\ufe0f&zwj;\u2640\ufe0f",
    whale: "\ud83d\udc33",
    whale2: "\ud83d\udc0b",
    wheel_of_dharma: "\u2638\ufe0f",
    wheelchair: "\u267f\ufe0f",
    white_check_mark: "\u2705",
    white_circle: "\u26aa\ufe0f",
    white_flag: "\ud83c\udff3\ufe0f",
    white_flower: "\ud83d\udcae",
    white_large_square: "\u2b1c\ufe0f",
    white_medium_small_square: "\u25fd\ufe0f",
    white_medium_square: "\u25fb\ufe0f",
    white_small_square: "\u25ab\ufe0f",
    white_square_button: "\ud83d\udd33",
    wilted_flower: "\ud83e\udd40",
    wind_chime: "\ud83c\udf90",
    wind_face: "\ud83c\udf2c",
    wine_glass: "\ud83c\udf77",
    wink: "\ud83d\ude09",
    wolf: "\ud83d\udc3a",
    woman: "\ud83d\udc69",
    woman_artist: "\ud83d\udc69&zwj;\ud83c\udfa8",
    woman_astronaut: "\ud83d\udc69&zwj;\ud83d\ude80",
    woman_cartwheeling: "\ud83e\udd38&zwj;\u2640\ufe0f",
    woman_cook: "\ud83d\udc69&zwj;\ud83c\udf73",
    woman_facepalming: "\ud83e\udd26&zwj;\u2640\ufe0f",
    woman_factory_worker: "\ud83d\udc69&zwj;\ud83c\udfed",
    woman_farmer: "\ud83d\udc69&zwj;\ud83c\udf3e",
    woman_firefighter: "\ud83d\udc69&zwj;\ud83d\ude92",
    woman_health_worker: "\ud83d\udc69&zwj;\u2695\ufe0f",
    woman_judge: "\ud83d\udc69&zwj;\u2696\ufe0f",
    woman_juggling: "\ud83e\udd39&zwj;\u2640\ufe0f",
    woman_mechanic: "\ud83d\udc69&zwj;\ud83d\udd27",
    woman_office_worker: "\ud83d\udc69&zwj;\ud83d\udcbc",
    woman_pilot: "\ud83d\udc69&zwj;\u2708\ufe0f",
    woman_playing_handball: "\ud83e\udd3e&zwj;\u2640\ufe0f",
    woman_playing_water_polo: "\ud83e\udd3d&zwj;\u2640\ufe0f",
    woman_scientist: "\ud83d\udc69&zwj;\ud83d\udd2c",
    woman_shrugging: "\ud83e\udd37&zwj;\u2640\ufe0f",
    woman_singer: "\ud83d\udc69&zwj;\ud83c\udfa4",
    woman_student: "\ud83d\udc69&zwj;\ud83c\udf93",
    woman_teacher: "\ud83d\udc69&zwj;\ud83c\udfeb",
    woman_technologist: "\ud83d\udc69&zwj;\ud83d\udcbb",
    woman_with_turban: "\ud83d\udc73&zwj;\u2640\ufe0f",
    womans_clothes: "\ud83d\udc5a",
    womans_hat: "\ud83d\udc52",
    women_wrestling: "\ud83e\udd3c&zwj;\u2640\ufe0f",
    womens: "\ud83d\udeba",
    world_map: "\ud83d\uddfa",
    worried: "\ud83d\ude1f",
    wrench: "\ud83d\udd27",
    writing_hand: "\u270d\ufe0f",
    x: "\u274c",
    yellow_heart: "\ud83d\udc9b",
    yen: "\ud83d\udcb4",
    yin_yang: "\u262f\ufe0f",
    yum: "\ud83d\ude0b",
    zap: "\u26a1\ufe0f",
    zipper_mouth_face: "\ud83e\udd10",
    zzz: "\ud83d\udca4",

    /* special emojis :P */
    octocat:
      '<img alt=":octocat:" height="20" width="20" align="absmiddle" src="https://assets-cdn.github.com/images/icons/emoji/octocat.png">',
    showdown:
      "<span style=\"font-family: 'Anonymous Pro', monospace; text-decoration: underline; text-decoration-style: dashed; text-decoration-color: #3e8b8a;text-underline-position: under;\">S</span>",
  };

  /**
   * Created by Estevao on 31-05-2015.
   */

  /**
   * Showdown Converter class
   * @class
   * @param {object} [converterOptions]
   * @returns {Converter}
   */
  showdown.Converter = function (converterOptions) {
    "use strict";

    var /**
       * Options used by this converter
       * @private
       * @type {{}}
       */
      options = {},
      /**
       * Language extensions used by this converter
       * @private
       * @type {Array}
       */
      langExtensions = [],
      /**
       * Output modifiers extensions used by this converter
       * @private
       * @type {Array}
       */
      outputModifiers = [],
      /**
       * Event listeners
       * @private
       * @type {{}}
       */
      listeners = {},
      /**
       * The flavor set in this converter
       */
      setConvFlavor = setFlavor,
      /**
       * Metadata of the document
       * @type {{parsed: {}, raw: string, format: string}}
       */
      metadata = {
        parsed: {},
        raw: "",
        format: "",
      };

    _constructor();

    /**
     * Converter constructor
     * @private
     */
    function _constructor() {
      converterOptions = converterOptions || {};

      for (var gOpt in globalOptions) {
        if (globalOptions.hasOwnProperty(gOpt)) {
          options[gOpt] = globalOptions[gOpt];
        }
      }

      // Merge options
      if (typeof converterOptions === "object") {
        for (var opt in converterOptions) {
          if (converterOptions.hasOwnProperty(opt)) {
            options[opt] = converterOptions[opt];
          }
        }
      } else {
        throw Error(
          "Converter expects the passed parameter to be an object, but " +
            typeof converterOptions +
            " was passed instead."
        );
      }

      if (options.extensions) {
        showdown.helper.forEach(options.extensions, _parseExtension);
      }
    }

    /**
     * Parse extension
     * @param {*} ext
     * @param {string} [name='']
     * @private
     */
    function _parseExtension(ext, name) {
      name = name || null;
      // If it's a string, the extension was previously loaded
      if (showdown.helper.isString(ext)) {
        ext = showdown.helper.stdExtName(ext);
        name = ext;

        // LEGACY_SUPPORT CODE
        if (showdown.extensions[ext]) {
          console.warn(
            "DEPRECATION WARNING: " +
              ext +
              " is an old extension that uses a deprecated loading method." +
              "Please inform the developer that the extension should be updated!"
          );
          legacyExtensionLoading(showdown.extensions[ext], ext);
          return;
          // END LEGACY SUPPORT CODE
        } else if (!showdown.helper.isUndefined(extensions[ext])) {
          ext = extensions[ext];
        } else {
          throw Error(
            'Extension "' +
              ext +
              '" could not be loaded. It was either not found or is not a valid extension.'
          );
        }
      }

      if (typeof ext === "function") {
        ext = ext();
      }

      if (!showdown.helper.isArray(ext)) {
        ext = [ext];
      }

      var validExt = validate(ext, name);
      if (!validExt.valid) {
        throw Error(validExt.error);
      }

      for (var i = 0; i < ext.length; ++i) {
        switch (ext[i].type) {
          case "lang":
            langExtensions.push(ext[i]);
            break;

          case "output":
            outputModifiers.push(ext[i]);
            break;
        }
        if (ext[i].hasOwnProperty("listeners")) {
          for (var ln in ext[i].listeners) {
            if (ext[i].listeners.hasOwnProperty(ln)) {
              listen(ln, ext[i].listeners[ln]);
            }
          }
        }
      }
    }

    /**
     * LEGACY_SUPPORT
     * @param {*} ext
     * @param {string} name
     */
    function legacyExtensionLoading(ext, name) {
      if (typeof ext === "function") {
        ext = ext(new showdown.Converter());
      }
      if (!showdown.helper.isArray(ext)) {
        ext = [ext];
      }
      var valid = validate(ext, name);

      if (!valid.valid) {
        throw Error(valid.error);
      }

      for (var i = 0; i < ext.length; ++i) {
        switch (ext[i].type) {
          case "lang":
            langExtensions.push(ext[i]);
            break;
          case "output":
            outputModifiers.push(ext[i]);
            break;
          default: // should never reach here
            throw Error("Extension loader error: Type unrecognized!!!");
        }
      }
    }

    /**
     * Listen to an event
     * @param {string} name
     * @param {function} callback
     */
    function listen(name, callback) {
      if (!showdown.helper.isString(name)) {
        throw Error(
          "Invalid argument in converter.listen() method: name must be a string, but " +
            typeof name +
            " given"
        );
      }

      if (typeof callback !== "function") {
        throw Error(
          "Invalid argument in converter.listen() method: callback must be a function, but " +
            typeof callback +
            " given"
        );
      }

      if (!listeners.hasOwnProperty(name)) {
        listeners[name] = [];
      }
      listeners[name].push(callback);
    }

    function rTrimInputText(text) {
      var rsp = text.match(/^\s*/)[0].length,
        rgx = new RegExp("^\\s{0," + rsp + "}", "gm");
      return text.replace(rgx, "");
    }

    /**
     * Dispatch an event
     * @private
     * @param {string} evtName Event name
     * @param {string} text Text
     * @param {{}} options Converter Options
     * @param {{}} globals
     * @returns {string}
     */
    this._dispatch = function dispatch(evtName, text, options, globals) {
      if (listeners.hasOwnProperty(evtName)) {
        for (var ei = 0; ei < listeners[evtName].length; ++ei) {
          var nText = listeners[evtName][ei](
            evtName,
            text,
            this,
            options,
            globals
          );
          if (nText && typeof nText !== "undefined") {
            text = nText;
          }
        }
      }
      return text;
    };

    /**
     * Listen to an event
     * @param {string} name
     * @param {function} callback
     * @returns {showdown.Converter}
     */
    this.listen = function (name, callback) {
      listen(name, callback);
      return this;
    };

    /**
     * Converts a markdown string into HTML
     * @param {string} text
     * @returns {*}
     */
    this.makeHtml = function (text) {
      //check if text is not falsy
      if (!text) {
        return text;
      }

      var globals = {
        gHtmlBlocks: [],
        gHtmlMdBlocks: [],
        gHtmlSpans: [],
        gUrls: {},
        gTitles: {},
        gDimensions: {},
        gListLevel: 0,
        hashLinkCounts: {},
        langExtensions: langExtensions,
        outputModifiers: outputModifiers,
        converter: this,
        ghCodeBlocks: [],
        metadata: {
          parsed: {},
          raw: "",
          format: "",
        },
      };

      // This lets us use ¨ trema as an escape char to avoid md5 hashes
      // The choice of character is arbitrary; anything that isn't
      // magic in Markdown will work.
      text = text.replace(/¨/g, "¨T");

      // Replace $ with ¨D
      // RegExp interprets $ as a special character
      // when it's in a replacement string
      text = text.replace(/\$/g, "¨D");

      // Standardize line endings
      text = text.replace(/\r\n/g, "\n"); // DOS to Unix
      text = text.replace(/\r/g, "\n"); // Mac to Unix

      // Stardardize line spaces
      text = text.replace(/\u00A0/g, "&nbsp;");

      if (options.smartIndentationFix) {
        text = rTrimInputText(text);
      }

      // Make sure text begins and ends with a couple of newlines:
      text = "\n\n" + text + "\n\n";

      // detab
      text = showdown.subParser("detab")(text, options, globals);

      /**
       * Strip any lines consisting only of spaces and tabs.
       * This makes subsequent regexs easier to write, because we can
       * match consecutive blank lines with /\n+/ instead of something
       * contorted like /[ \t]*\n+/
       */
      text = text.replace(/^[ \t]+$/gm, "");

      //run languageExtensions
      showdown.helper.forEach(langExtensions, function (ext) {
        text = showdown.subParser("runExtension")(ext, text, options, globals);
      });

      // run the sub parsers
      text = showdown.subParser("metadata")(text, options, globals);
      text = showdown.subParser("hashPreCodeTags")(text, options, globals);
      text = showdown.subParser("githubCodeBlocks")(text, options, globals);
      text = showdown.subParser("hashHTMLBlocks")(text, options, globals);
      text = showdown.subParser("hashCodeTags")(text, options, globals);
      text = showdown.subParser("stripLinkDefinitions")(text, options, globals);
      text = showdown.subParser("blockGamut")(text, options, globals);
      text = showdown.subParser("unhashHTMLSpans")(text, options, globals);
      text = showdown.subParser("unescapeSpecialChars")(text, options, globals);

      // attacklab: Restore dollar signs
      text = text.replace(/¨D/g, "$$");

      // attacklab: Restore tremas
      text = text.replace(/¨T/g, "¨");

      // render a complete html document instead of a partial if the option is enabled
      text = showdown.subParser("completeHTMLDocument")(text, options, globals);

      // Run output modifiers
      showdown.helper.forEach(outputModifiers, function (ext) {
        text = showdown.subParser("runExtension")(ext, text, options, globals);
      });

      // update metadata
      metadata = globals.metadata;
      return text;
    };

    /**
     * Converts an HTML string into a markdown string
     * @param src
     * @param [HTMLParser] A WHATWG DOM and HTML parser, such as JSDOM. If none is supplied, window.document will be used.
     * @returns {string}
     */
    this.makeMarkdown = this.makeMd = function (src, HTMLParser) {
      // replace \r\n with \n
      src = src.replace(/\r\n/g, "\n");
      src = src.replace(/\r/g, "\n"); // old macs

      // due to an edge case, we need to find this: > <
      // to prevent removing of non silent white spaces
      // ex: <em>this is</em> <strong>sparta</strong>
      src = src.replace(/>[ \t]+</, ">¨NBSP;<");

      if (!HTMLParser) {
        if (window && window.document) {
          HTMLParser = window.document;
        } else {
          throw new Error(
            "HTMLParser is undefined. If in a webworker or nodejs environment, you need to provide a WHATWG DOM and HTML such as JSDOM"
          );
        }
      }

      var doc = HTMLParser.createElement("div");
      doc.innerHTML = src;

      var globals = {
        preList: substitutePreCodeTags(doc),
      };

      // remove all newlines and collapse spaces
      clean(doc);

      // some stuff, like accidental reference links must now be escaped
      // TODO
      // doc.innerHTML = doc.innerHTML.replace(/\[[\S\t ]]/);

      var nodes = doc.childNodes,
        mdDoc = "";

      for (var i = 0; i < nodes.length; i++) {
        mdDoc += showdown.subParser("makeMarkdown.node")(nodes[i], globals);
      }

      function clean(node) {
        for (var n = 0; n < node.childNodes.length; ++n) {
          var child = node.childNodes[n];
          if (child.nodeType === 3) {
            if (
              !/\S/.test(child.nodeValue) &&
              !/^[ ]+$/.test(child.nodeValue)
            ) {
              node.removeChild(child);
              --n;
            } else {
              child.nodeValue = child.nodeValue.split("\n").join(" ");
              child.nodeValue = child.nodeValue.replace(/(\s)+/g, "$1");
            }
          } else if (child.nodeType === 1) {
            clean(child);
          }
        }
      }

      // find all pre tags and replace contents with placeholder
      // we need this so that we can remove all indentation from html
      // to ease up parsing
      function substitutePreCodeTags(doc) {
        var pres = doc.querySelectorAll("pre"),
          presPH = [];

        for (var i = 0; i < pres.length; ++i) {
          if (
            pres[i].childElementCount === 1 &&
            pres[i].firstChild.tagName.toLowerCase() === "code"
          ) {
            var content = pres[i].firstChild.innerHTML.trim(),
              language = pres[i].firstChild.getAttribute("data-language") || "";

            // if data-language attribute is not defined, then we look for class language-*
            if (language === "") {
              var classes = pres[i].firstChild.className.split(" ");
              for (var c = 0; c < classes.length; ++c) {
                var matches = classes[c].match(/^language-(.+)$/);
                if (matches !== null) {
                  language = matches[1];
                  break;
                }
              }
            }

            // unescape html entities in content
            content = showdown.helper.unescapeHTMLEntities(content);

            presPH.push(content);
            pres[i].outerHTML =
              '<precode language="' +
              language +
              '" precodenum="' +
              i.toString() +
              '"></precode>';
          } else {
            presPH.push(pres[i].innerHTML);
            pres[i].innerHTML = "";
            pres[i].setAttribute("prenum", i.toString());
          }
        }
        return presPH;
      }

      return mdDoc;
    };

    /**
     * Set an option of this Converter instance
     * @param {string} key
     * @param {*} value
     */
    this.setOption = function (key, value) {
      options[key] = value;
    };

    /**
     * Get the option of this Converter instance
     * @param {string} key
     * @returns {*}
     */
    this.getOption = function (key) {
      return options[key];
    };

    /**
     * Get the options of this Converter instance
     * @returns {{}}
     */
    this.getOptions = function () {
      return options;
    };

    /**
     * Add extension to THIS converter
     * @param {{}} extension
     * @param {string} [name=null]
     */
    this.addExtension = function (extension, name) {
      name = name || null;
      _parseExtension(extension, name);
    };

    /**
     * Use a global registered extension with THIS converter
     * @param {string} extensionName Name of the previously registered extension
     */
    this.useExtension = function (extensionName) {
      _parseExtension(extensionName);
    };

    /**
     * Set the flavor THIS converter should use
     * @param {string} name
     */
    this.setFlavor = function (name) {
      if (!flavor.hasOwnProperty(name)) {
        throw Error(name + " flavor was not found");
      }
      var preset = flavor[name];
      setConvFlavor = name;
      for (var option in preset) {
        if (preset.hasOwnProperty(option)) {
          options[option] = preset[option];
        }
      }
    };

    /**
     * Get the currently set flavor of this converter
     * @returns {string}
     */
    this.getFlavor = function () {
      return setConvFlavor;
    };

    /**
     * Remove an extension from THIS converter.
     * Note: This is a costly operation. It's better to initialize a new converter
     * and specify the extensions you wish to use
     * @param {Array} extension
     */
    this.removeExtension = function (extension) {
      if (!showdown.helper.isArray(extension)) {
        extension = [extension];
      }
      for (var a = 0; a < extension.length; ++a) {
        var ext = extension[a];
        for (var i = 0; i < langExtensions.length; ++i) {
          if (langExtensions[i] === ext) {
            langExtensions.splice(i, 1);
          }
        }
        for (var ii = 0; ii < outputModifiers.length; ++ii) {
          if (outputModifiers[ii] === ext) {
            outputModifiers.splice(ii, 1);
          }
        }
      }
    };

    /**
     * Get all extension of THIS converter
     * @returns {{language: Array, output: Array}}
     */
    this.getAllExtensions = function () {
      return {
        language: langExtensions,
        output: outputModifiers,
      };
    };

    /**
     * Get the metadata of the previously parsed document
     * @param raw
     * @returns {string|{}}
     */
    this.getMetadata = function (raw) {
      if (raw) {
        return metadata.raw;
      } else {
        return metadata.parsed;
      }
    };

    /**
     * Get the metadata format of the previously parsed document
     * @returns {string}
     */
    this.getMetadataFormat = function () {
      return metadata.format;
    };

    /**
     * Private: set a single key, value metadata pair
     * @param {string} key
     * @param {string} value
     */
    this._setMetadataPair = function (key, value) {
      metadata.parsed[key] = value;
    };

    /**
     * Private: set metadata format
     * @param {string} format
     */
    this._setMetadataFormat = function (format) {
      metadata.format = format;
    };

    /**
     * Private: set metadata raw text
     * @param {string} raw
     */
    this._setMetadataRaw = function (raw) {
      metadata.raw = raw;
    };
  };

  /**
   * Turn Markdown link shortcuts into XHTML <a> tags.
   */
  showdown.subParser("anchors", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "anchors.before",
      text,
      options,
      globals
    );

    var writeAnchorTag = function (
      wholeMatch,
      linkText,
      linkId,
      url,
      m5,
      m6,
      title
    ) {
      if (showdown.helper.isUndefined(title)) {
        title = "";
      }
      linkId = linkId.toLowerCase();

      // Special case for explicit empty url
      if (wholeMatch.search(/\(<?\s*>? ?(['"].*['"])?\)$/m) > -1) {
        url = "";
      } else if (!url) {
        if (!linkId) {
          // lower-case and turn embedded newlines into spaces
          linkId = linkText.toLowerCase().replace(/ ?\n/g, " ");
        }
        url = "#" + linkId;

        if (!showdown.helper.isUndefined(globals.gUrls[linkId])) {
          url = globals.gUrls[linkId];
          if (!showdown.helper.isUndefined(globals.gTitles[linkId])) {
            title = globals.gTitles[linkId];
          }
        } else {
          return wholeMatch;
        }
      }

      //url = showdown.helper.escapeCharacters(url, '*_', false); // replaced line to improve performance
      url = url.replace(
        showdown.helper.regexes.asteriskDashAndColon,
        showdown.helper.escapeCharactersCallback
      );

      var result = '<a href="' + url + '"';

      if (title !== "" && title !== null) {
        title = title.replace(/"/g, "&quot;");
        //title = showdown.helper.escapeCharacters(title, '*_', false); // replaced line to improve performance
        title = title.replace(
          showdown.helper.regexes.asteriskDashAndColon,
          showdown.helper.escapeCharactersCallback
        );
        result += ' title="' + title + '"';
      }

      // optionLinksInNewWindow only applies
      // to external links. Hash links (#) open in same page
      if (options.openLinksInNewWindow && !/^#/.test(url)) {
        // escaped _
        result += ' rel="noopener noreferrer" target="¨E95Eblank"';
      }

      result += ">" + linkText + "</a>";

      return result;
    };

    // First, handle reference-style links: [link text] [id]
    text = text.replace(
      /\[((?:\[[^\]]*]|[^\[\]])*)] ?(?:\n *)?\[(.*?)]()()()()/g,
      writeAnchorTag
    );

    // Next, inline-style links: [link text](url "optional title")
    // cases with crazy urls like ./image/cat1).png
    text = text.replace(
      /\[((?:\[[^\]]*]|[^\[\]])*)]()[ \t]*\([ \t]?<([^>]*)>(?:[ \t]*((["'])([^"]*?)\5))?[ \t]?\)/g,
      writeAnchorTag
    );

    // normal cases
    text = text.replace(
      /\[((?:\[[^\]]*]|[^\[\]])*)]()[ \t]*\([ \t]?<?([\S]+?(?:\([\S]*?\)[\S]*?)?)>?(?:[ \t]*((["'])([^"]*?)\5))?[ \t]?\)/g,
      writeAnchorTag
    );

    // handle reference-style shortcuts: [link text]
    // These must come last in case you've also got [link test][1]
    // or [link test](/foo)
    text = text.replace(/\[([^\[\]]+)]()()()()()/g, writeAnchorTag);

    // Lastly handle GithubMentions if option is enabled
    if (options.ghMentions) {
      text = text.replace(
        /(^|\s)(\\)?(@([a-z\d]+(?:[a-z\d.-]+?[a-z\d]+)*))/gim,
        function (wm, st, escape, mentions, username) {
          if (escape === "\\") {
            return st + mentions;
          }

          //check if options.ghMentionsLink is a string
          if (!showdown.helper.isString(options.ghMentionsLink)) {
            throw new Error("ghMentionsLink option must be a string");
          }
          var lnk = options.ghMentionsLink.replace(/\{u}/g, username),
            target = "";
          if (options.openLinksInNewWindow) {
            target = ' rel="noopener noreferrer" target="¨E95Eblank"';
          }
          return (
            st + '<a href="' + lnk + '"' + target + ">" + mentions + "</a>"
          );
        }
      );
    }

    text = globals.converter._dispatch("anchors.after", text, options, globals);
    return text;
  });

  // url allowed chars [a-z\d_.~:/?#[]@!$&'()*+,;=-]

  var simpleURLRegex =
      /([*~_]+|\b)(((https?|ftp|dict):\/\/|www\.)[^'">\s]+?\.[^'">\s]+?)()(\1)?(?=\s|$)(?!["<>])/gi,
    simpleURLRegex2 =
      /([*~_]+|\b)(((https?|ftp|dict):\/\/|www\.)[^'">\s]+\.[^'">\s]+?)([.!?,()\[\]])?(\1)?(?=\s|$)(?!["<>])/gi,
    delimUrlRegex = /()<(((https?|ftp|dict):\/\/|www\.)[^'">\s]+)()>()/gi,
    simpleMailRegex =
      /(^|\s)(?:mailto:)?([A-Za-z0-9!#$%&'*+-/=?^_`{|}~.]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)(?=$|\s)/gim,
    delimMailRegex =
      /<()(?:mailto:)?([-.\w]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
    replaceLink = function (options) {
      "use strict";
      return function (
        wm,
        leadingMagicChars,
        link,
        m2,
        m3,
        trailingPunctuation,
        trailingMagicChars
      ) {
        link = link.replace(
          showdown.helper.regexes.asteriskDashAndColon,
          showdown.helper.escapeCharactersCallback
        );
        var lnkTxt = link,
          append = "",
          target = "",
          lmc = leadingMagicChars || "",
          tmc = trailingMagicChars || "";
        if (/^www\./i.test(link)) {
          link = link.replace(/^www\./i, "http://www.");
        }
        if (options.excludeTrailingPunctuationFromURLs && trailingPunctuation) {
          append = trailingPunctuation;
        }
        if (options.openLinksInNewWindow) {
          target = ' rel="noopener noreferrer" target="¨E95Eblank"';
        }
        return (
          lmc +
          '<a href="' +
          link +
          '"' +
          target +
          ">" +
          lnkTxt +
          "</a>" +
          append +
          tmc
        );
      };
    },
    replaceMail = function (options, globals) {
      "use strict";
      return function (wholeMatch, b, mail) {
        var href = "mailto:";
        b = b || "";
        mail = showdown.subParser("unescapeSpecialChars")(
          mail,
          options,
          globals
        );
        if (options.encodeEmails) {
          href = showdown.helper.encodeEmailAddress(href + mail);
          mail = showdown.helper.encodeEmailAddress(mail);
        } else {
          href = href + mail;
        }
        return b + '<a href="' + href + '">' + mail + "</a>";
      };
    };

  showdown.subParser("autoLinks", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "autoLinks.before",
      text,
      options,
      globals
    );

    text = text.replace(delimUrlRegex, replaceLink(options));
    text = text.replace(delimMailRegex, replaceMail(options, globals));

    text = globals.converter._dispatch(
      "autoLinks.after",
      text,
      options,
      globals
    );

    return text;
  });

  showdown.subParser("simplifiedAutoLinks", function (text, options, globals) {
    "use strict";

    if (!options.simplifiedAutoLink) {
      return text;
    }

    text = globals.converter._dispatch(
      "simplifiedAutoLinks.before",
      text,
      options,
      globals
    );

    if (options.excludeTrailingPunctuationFromURLs) {
      text = text.replace(simpleURLRegex2, replaceLink(options));
    } else {
      text = text.replace(simpleURLRegex, replaceLink(options));
    }
    text = text.replace(simpleMailRegex, replaceMail(options, globals));

    text = globals.converter._dispatch(
      "simplifiedAutoLinks.after",
      text,
      options,
      globals
    );

    return text;
  });

  /**
   * These are all the transformations that form block-level
   * tags like paragraphs, headers, and list items.
   */
  showdown.subParser("blockGamut", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "blockGamut.before",
      text,
      options,
      globals
    );

    // we parse blockquotes first so that we can have headings and hrs
    // inside blockquotes
    text = showdown.subParser("blockQuotes")(text, options, globals);
    text = showdown.subParser("headers")(text, options, globals);

    // Do Horizontal Rules:
    text = showdown.subParser("horizontalRule")(text, options, globals);

    text = showdown.subParser("lists")(text, options, globals);
    text = showdown.subParser("codeBlocks")(text, options, globals);
    text = showdown.subParser("tables")(text, options, globals);

    // We already ran _HashHTMLBlocks() before, in Markdown(), but that
    // was to escape raw HTML in the original Markdown source. This time,
    // we're escaping the markup we've just created, so that we don't wrap
    // <p> tags around block-level tags.
    text = showdown.subParser("hashHTMLBlocks")(text, options, globals);
    text = showdown.subParser("paragraphs")(text, options, globals);

    text = globals.converter._dispatch(
      "blockGamut.after",
      text,
      options,
      globals
    );

    return text;
  });

  showdown.subParser("blockQuotes", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "blockQuotes.before",
      text,
      options,
      globals
    );

    // add a couple extra lines after the text and endtext mark
    text = text + "\n\n";

    var rgx = /(^ {0,3}>[ \t]?.+\n(.+\n)*\n*)+/gm;

    if (options.splitAdjacentBlockquotes) {
      rgx = /^ {0,3}>[\s\S]*?(?:\n\n)/gm;
    }

    text = text.replace(rgx, function (bq) {
      // attacklab: hack around Konqueror 3.5.4 bug:
      // "----------bug".replace(/^-/g,"") == "bug"
      bq = bq.replace(/^[ \t]*>[ \t]?/gm, ""); // trim one level of quoting

      // attacklab: clean up hack
      bq = bq.replace(/¨0/g, "");

      bq = bq.replace(/^[ \t]+$/gm, ""); // trim whitespace-only lines
      bq = showdown.subParser("githubCodeBlocks")(bq, options, globals);
      bq = showdown.subParser("blockGamut")(bq, options, globals); // recurse

      bq = bq.replace(/(^|\n)/g, "$1  ");
      // These leading spaces screw with <pre> content, so we need to fix that:
      bq = bq.replace(/(\s*<pre>[^\r]+?<\/pre>)/gm, function (wholeMatch, m1) {
        var pre = m1;
        // attacklab: hack around Konqueror 3.5.4 bug:
        pre = pre.replace(/^  /gm, "¨0");
        pre = pre.replace(/¨0/g, "");
        return pre;
      });

      return showdown.subParser("hashBlock")(
        "<blockquote>\n" + bq + "\n</blockquote>",
        options,
        globals
      );
    });

    text = globals.converter._dispatch(
      "blockQuotes.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Process Markdown `<pre><code>` blocks.
   */
  showdown.subParser("codeBlocks", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "codeBlocks.before",
      text,
      options,
      globals
    );

    // sentinel workarounds for lack of \A and \Z, safari\khtml bug
    text += "¨0";

    var pattern =
      /(?:\n\n|^)((?:(?:[ ]{4}|\t).*\n+)+)(\n*[ ]{0,3}[^ \t\n]|(?=¨0))/g;
    text = text.replace(pattern, function (wholeMatch, m1, m2) {
      var codeblock = m1,
        nextChar = m2,
        end = "\n";

      codeblock = showdown.subParser("outdent")(codeblock, options, globals);
      codeblock = showdown.subParser("encodeCode")(codeblock, options, globals);
      codeblock = showdown.subParser("detab")(codeblock, options, globals);
      codeblock = codeblock.replace(/^\n+/g, ""); // trim leading newlines
      codeblock = codeblock.replace(/\n+$/g, ""); // trim trailing newlines

      if (options.omitExtraWLInCodeBlocks) {
        end = "";
      }

      codeblock = "<pre><code>" + codeblock + end + "</code></pre>";

      return (
        showdown.subParser("hashBlock")(codeblock, options, globals) + nextChar
      );
    });

    // strip sentinel
    text = text.replace(/¨0/, "");

    text = globals.converter._dispatch(
      "codeBlocks.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   *
   *   *  Backtick quotes are used for <code></code> spans.
   *
   *   *  You can use multiple backticks as the delimiters if you want to
   *     include literal backticks in the code span. So, this input:
   *
   *         Just type ``foo `bar` baz`` at the prompt.
   *
   *       Will translate to:
   *
   *         <p>Just type <code>foo `bar` baz</code> at the prompt.</p>
   *
   *    There's no arbitrary limit to the number of backticks you
   *    can use as delimters. If you need three consecutive backticks
   *    in your code, use four for delimiters, etc.
   *
   *  *  You can use spaces to get literal backticks at the edges:
   *
   *         ... type `` `bar` `` ...
   *
   *       Turns to:
   *
   *         ... type <code>`bar`</code> ...
   */
  showdown.subParser("codeSpans", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "codeSpans.before",
      text,
      options,
      globals
    );

    if (typeof text === "undefined") {
      text = "";
    }
    text = text.replace(
      /(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,
      function (wholeMatch, m1, m2, m3) {
        var c = m3;
        c = c.replace(/^([ \t]*)/g, ""); // leading whitespace
        c = c.replace(/[ \t]*$/g, ""); // trailing whitespace
        c = showdown.subParser("encodeCode")(c, options, globals);
        c = m1 + "<code>" + c + "</code>";
        c = showdown.subParser("hashHTMLSpans")(c, options, globals);
        return c;
      }
    );

    text = globals.converter._dispatch(
      "codeSpans.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Create a full HTML document from the processed markdown
   */
  showdown.subParser("completeHTMLDocument", function (text, options, globals) {
    "use strict";

    if (!options.completeHTMLDocument) {
      return text;
    }

    text = globals.converter._dispatch(
      "completeHTMLDocument.before",
      text,
      options,
      globals
    );

    var doctype = "html",
      doctypeParsed = "<!DOCTYPE HTML>\n",
      title = "",
      charset = '<meta charset="utf-8">\n',
      lang = "",
      metadata = "";

    if (typeof globals.metadata.parsed.doctype !== "undefined") {
      doctypeParsed = "<!DOCTYPE " + globals.metadata.parsed.doctype + ">\n";
      doctype = globals.metadata.parsed.doctype.toString().toLowerCase();
      if (doctype === "html" || doctype === "html5") {
        charset = '<meta charset="utf-8">';
      }
    }

    for (var meta in globals.metadata.parsed) {
      if (globals.metadata.parsed.hasOwnProperty(meta)) {
        switch (meta.toLowerCase()) {
          case "doctype":
            break;

          case "title":
            title = "<title>" + globals.metadata.parsed.title + "</title>\n";
            break;

          case "charset":
            if (doctype === "html" || doctype === "html5") {
              charset =
                '<meta charset="' + globals.metadata.parsed.charset + '">\n';
            } else {
              charset =
                '<meta name="charset" content="' +
                globals.metadata.parsed.charset +
                '">\n';
            }
            break;

          case "language":
          case "lang":
            lang = ' lang="' + globals.metadata.parsed[meta] + '"';
            metadata +=
              '<meta name="' +
              meta +
              '" content="' +
              globals.metadata.parsed[meta] +
              '">\n';
            break;

          default:
            metadata +=
              '<meta name="' +
              meta +
              '" content="' +
              globals.metadata.parsed[meta] +
              '">\n';
        }
      }
    }

    text =
      doctypeParsed +
      "<html" +
      lang +
      ">\n<head>\n" +
      title +
      charset +
      metadata +
      "</head>\n<body>\n" +
      text.trim() +
      "\n</body>\n</html>";

    text = globals.converter._dispatch(
      "completeHTMLDocument.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Convert all tabs to spaces
   */
  showdown.subParser("detab", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch("detab.before", text, options, globals);

    // expand first n-1 tabs
    text = text.replace(/\t(?=\t)/g, "    "); // g_tab_width

    // replace the nth with two sentinels
    text = text.replace(/\t/g, "¨A¨B");

    // use the sentinel to anchor our regex so it doesn't explode
    text = text.replace(/¨B(.+?)¨A/g, function (wholeMatch, m1) {
      var leadingText = m1,
        numSpaces = 4 - (leadingText.length % 4); // g_tab_width

      // there *must* be a better way to do this:
      for (var i = 0; i < numSpaces; i++) {
        leadingText += " ";
      }

      return leadingText;
    });

    // clean up sentinels
    text = text.replace(/¨A/g, "    "); // g_tab_width
    text = text.replace(/¨B/g, "");

    text = globals.converter._dispatch("detab.after", text, options, globals);
    return text;
  });

  showdown.subParser("ellipsis", function (text, options, globals) {
    "use strict";

    if (!options.ellipsis) {
      return text;
    }

    text = globals.converter._dispatch(
      "ellipsis.before",
      text,
      options,
      globals
    );

    text = text.replace(/\.\.\./g, "…");

    text = globals.converter._dispatch(
      "ellipsis.after",
      text,
      options,
      globals
    );

    return text;
  });

  /**
   * Turn emoji codes into emojis
   *
   * List of supported emojis: https://github.com/showdownjs/showdown/wiki/Emojis
   */
  showdown.subParser("emoji", function (text, options, globals) {
    "use strict";

    if (!options.emoji) {
      return text;
    }

    text = globals.converter._dispatch("emoji.before", text, options, globals);

    var emojiRgx = /:([\S]+?):/g;

    text = text.replace(emojiRgx, function (wm, emojiCode) {
      if (showdown.helper.emojis.hasOwnProperty(emojiCode)) {
        return showdown.helper.emojis[emojiCode];
      }
      return wm;
    });

    text = globals.converter._dispatch("emoji.after", text, options, globals);

    return text;
  });

  /**
   * Smart processing for ampersands and angle brackets that need to be encoded.
   */
  showdown.subParser("encodeAmpsAndAngles", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "encodeAmpsAndAngles.before",
      text,
      options,
      globals
    );

    // Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
    // http://bumppo.net/projects/amputator/
    text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g, "&amp;");

    // Encode naked <'s
    text = text.replace(/<(?![a-z\/?$!])/gi, "&lt;");

    // Encode <
    text = text.replace(/</g, "&lt;");

    // Encode >
    text = text.replace(/>/g, "&gt;");

    text = globals.converter._dispatch(
      "encodeAmpsAndAngles.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Returns the string, with after processing the following backslash escape sequences.
   *
   * attacklab: The polite way to do this is with the new escapeCharacters() function:
   *
   *    text = escapeCharacters(text,"\\",true);
   *    text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
   *
   * ...but we're sidestepping its use of the (slow) RegExp constructor
   * as an optimization for Firefox.  This function gets called a LOT.
   */
  showdown.subParser(
    "encodeBackslashEscapes",
    function (text, options, globals) {
      "use strict";
      text = globals.converter._dispatch(
        "encodeBackslashEscapes.before",
        text,
        options,
        globals
      );

      text = text.replace(/\\(\\)/g, showdown.helper.escapeCharactersCallback);
      text = text.replace(
        /\\([`*_{}\[\]()>#+.!~=|:-])/g,
        showdown.helper.escapeCharactersCallback
      );

      text = globals.converter._dispatch(
        "encodeBackslashEscapes.after",
        text,
        options,
        globals
      );
      return text;
    }
  );

  /**
   * Encode/escape certain characters inside Markdown code runs.
   * The point is that in code, these characters are literals,
   * and lose their special Markdown meanings.
   */
  showdown.subParser("encodeCode", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "encodeCode.before",
      text,
      options,
      globals
    );

    // Encode all ampersands; HTML entities are not
    // entities within a Markdown code span.
    text = text
      .replace(/&/g, "&amp;")
      // Do the angle bracket song and dance:
      .replace(/</g, "&lt;")
      .replace(/>/g, "&gt;")
      // Now, escape characters that are magic in Markdown:
      .replace(/([*_{}\[\]\\=~-])/g, showdown.helper.escapeCharactersCallback);

    text = globals.converter._dispatch(
      "encodeCode.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Within tags -- meaning between < and > -- encode [\ ` * _ ~ =] so they
   * don't conflict with their use in Markdown for code, italics and strong.
   */
  showdown.subParser(
    "escapeSpecialCharsWithinTagAttributes",
    function (text, options, globals) {
      "use strict";
      text = globals.converter._dispatch(
        "escapeSpecialCharsWithinTagAttributes.before",
        text,
        options,
        globals
      );

      // Build a regex to find HTML tags.
      var tags = /<\/?[a-z\d_:-]+(?:[\s]+[\s\S]+?)?>/gi,
        comments = /<!(--(?:(?:[^>-]|-[^>])(?:[^-]|-[^-])*)--)>/gi;

      text = text.replace(tags, function (wholeMatch) {
        return wholeMatch
          .replace(/(.)<\/?code>(?=.)/g, "$1`")
          .replace(/([\\`*_~=|])/g, showdown.helper.escapeCharactersCallback);
      });

      text = text.replace(comments, function (wholeMatch) {
        return wholeMatch.replace(
          /([\\`*_~=|])/g,
          showdown.helper.escapeCharactersCallback
        );
      });

      text = globals.converter._dispatch(
        "escapeSpecialCharsWithinTagAttributes.after",
        text,
        options,
        globals
      );
      return text;
    }
  );

  /**
   * Handle github codeblocks prior to running HashHTML so that
   * HTML contained within the codeblock gets escaped properly
   * Example:
   * ```ruby
   *     def hello_world(x)
   *       puts "Hello, #{x}"
   *     end
   * ```
   */
  showdown.subParser("githubCodeBlocks", function (text, options, globals) {
    "use strict";

    // early exit if option is not enabled
    if (!options.ghCodeBlocks) {
      return text;
    }

    text = globals.converter._dispatch(
      "githubCodeBlocks.before",
      text,
      options,
      globals
    );

    text += "¨0";

    text = text.replace(
      /(?:^|\n)(?: {0,3})(```+|~~~+)(?: *)([^\s`~]*)\n([\s\S]*?)\n(?: {0,3})\1/g,
      function (wholeMatch, delim, language, codeblock) {
        var end = options.omitExtraWLInCodeBlocks ? "" : "\n";

        // First parse the github code block
        codeblock = showdown.subParser("encodeCode")(
          codeblock,
          options,
          globals
        );
        codeblock = showdown.subParser("detab")(codeblock, options, globals);
        codeblock = codeblock.replace(/^\n+/g, ""); // trim leading newlines
        codeblock = codeblock.replace(/\n+$/g, ""); // trim trailing whitespace

        codeblock =
          "<pre><code" +
          (language
            ? ' class="' + language + " language-" + language + '"'
            : "") +
          ">" +
          codeblock +
          end +
          "</code></pre>";

        codeblock = showdown.subParser("hashBlock")(
          codeblock,
          options,
          globals
        );

        // Since GHCodeblocks can be false positives, we need to
        // store the primitive text and the parsed text in a global var,
        // and then return a token
        return (
          "\n\n¨G" +
          (globals.ghCodeBlocks.push({
            text: wholeMatch,
            codeblock: codeblock,
          }) -
            1) +
          "G\n\n"
        );
      }
    );

    // attacklab: strip sentinel
    text = text.replace(/¨0/, "");

    return globals.converter._dispatch(
      "githubCodeBlocks.after",
      text,
      options,
      globals
    );
  });

  showdown.subParser("hashBlock", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "hashBlock.before",
      text,
      options,
      globals
    );
    text = text.replace(/(^\n+|\n+$)/g, "");
    text = "\n\n¨K" + (globals.gHtmlBlocks.push(text) - 1) + "K\n\n";
    text = globals.converter._dispatch(
      "hashBlock.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Hash and escape <code> elements that should not be parsed as markdown
   */
  showdown.subParser("hashCodeTags", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "hashCodeTags.before",
      text,
      options,
      globals
    );

    var repFunc = function (wholeMatch, match, left, right) {
      var codeblock =
        left +
        showdown.subParser("encodeCode")(match, options, globals) +
        right;
      return "¨C" + (globals.gHtmlSpans.push(codeblock) - 1) + "C";
    };

    // Hash naked <code>
    text = showdown.helper.replaceRecursiveRegExp(
      text,
      repFunc,
      "<code\\b[^>]*>",
      "</code>",
      "gim"
    );

    text = globals.converter._dispatch(
      "hashCodeTags.after",
      text,
      options,
      globals
    );
    return text;
  });

  showdown.subParser("hashElement", function (text, options, globals) {
    "use strict";

    return function (wholeMatch, m1) {
      var blockText = m1;

      // Undo double lines
      blockText = blockText.replace(/\n\n/g, "\n");
      blockText = blockText.replace(/^\n/, "");

      // strip trailing blank lines
      blockText = blockText.replace(/\n+$/g, "");

      // Replace the element text with a marker ("¨KxK" where x is its key)
      blockText =
        "\n\n¨K" + (globals.gHtmlBlocks.push(blockText) - 1) + "K\n\n";

      return blockText;
    };
  });

  showdown.subParser("hashHTMLBlocks", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "hashHTMLBlocks.before",
      text,
      options,
      globals
    );

    var blockTags = [
        "pre",
        "div",
        "h1",
        "h2",
        "h3",
        "h4",
        "h5",
        "h6",
        "blockquote",
        "table",
        "dl",
        "ol",
        "ul",
        "script",
        "noscript",
        "form",
        "fieldset",
        "iframe",
        "math",
        "style",
        "section",
        "header",
        "footer",
        "nav",
        "article",
        "aside",
        "address",
        "audio",
        "canvas",
        "figure",
        "hgroup",
        "output",
        "video",
        "p",
      ],
      repFunc = function (wholeMatch, match, left, right) {
        var txt = wholeMatch;
        // check if this html element is marked as markdown
        // if so, it's contents should be parsed as markdown
        if (left.search(/\bmarkdown\b/) !== -1) {
          txt = left + globals.converter.makeHtml(match) + right;
        }
        return "\n\n¨K" + (globals.gHtmlBlocks.push(txt) - 1) + "K\n\n";
      };

    if (options.backslashEscapesHTMLTags) {
      // encode backslash escaped HTML tags
      text = text.replace(/\\<(\/?[^>]+?)>/g, function (wm, inside) {
        return "&lt;" + inside + "&gt;";
      });
    }

    // hash HTML Blocks
    for (var i = 0; i < blockTags.length; ++i) {
      var opTagPos,
        rgx1 = new RegExp("^ {0,3}(<" + blockTags[i] + "\\b[^>]*>)", "im"),
        patLeft = "<" + blockTags[i] + "\\b[^>]*>",
        patRight = "</" + blockTags[i] + ">";
      // 1. Look for the first position of the first opening HTML tag in the text
      while ((opTagPos = showdown.helper.regexIndexOf(text, rgx1)) !== -1) {
        // if the HTML tag is \ escaped, we need to escape it and break

        //2. Split the text in that position
        var subTexts = showdown.helper.splitAtIndex(text, opTagPos),
          //3. Match recursively
          newSubText1 = showdown.helper.replaceRecursiveRegExp(
            subTexts[1],
            repFunc,
            patLeft,
            patRight,
            "im"
          );

        // prevent an infinite loop
        if (newSubText1 === subTexts[1]) {
          break;
        }
        text = subTexts[0].concat(newSubText1);
      }
    }
    // HR SPECIAL CASE
    text = text.replace(
      /(\n {0,3}(<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,
      showdown.subParser("hashElement")(text, options, globals)
    );

    // Special case for standalone HTML comments
    text = showdown.helper.replaceRecursiveRegExp(
      text,
      function (txt) {
        return "\n\n¨K" + (globals.gHtmlBlocks.push(txt) - 1) + "K\n\n";
      },
      "^ {0,3}<!--",
      "-->",
      "gm"
    );

    // PHP and ASP-style processor instructions (<?...?> and <%...%>)
    text = text.replace(
      /(?:\n\n)( {0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,
      showdown.subParser("hashElement")(text, options, globals)
    );

    text = globals.converter._dispatch(
      "hashHTMLBlocks.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Hash span elements that should not be parsed as markdown
   */
  showdown.subParser("hashHTMLSpans", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "hashHTMLSpans.before",
      text,
      options,
      globals
    );

    function hashHTMLSpan(html) {
      return "¨C" + (globals.gHtmlSpans.push(html) - 1) + "C";
    }

    // Hash Self Closing tags
    text = text.replace(/<[^>]+?\/>/gi, function (wm) {
      return hashHTMLSpan(wm);
    });

    // Hash tags without properties
    text = text.replace(/<([^>]+?)>[\s\S]*?<\/\1>/g, function (wm) {
      return hashHTMLSpan(wm);
    });

    // Hash tags with properties
    text = text.replace(/<([^>]+?)\s[^>]+?>[\s\S]*?<\/\1>/g, function (wm) {
      return hashHTMLSpan(wm);
    });

    // Hash self closing tags without />
    text = text.replace(/<[^>]+?>/gi, function (wm) {
      return hashHTMLSpan(wm);
    });

    /*showdown.helper.matchRecursiveRegExp(text, '<code\\b[^>]*>', '</code>', 'gi');*/

    text = globals.converter._dispatch(
      "hashHTMLSpans.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Unhash HTML spans
   */
  showdown.subParser("unhashHTMLSpans", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "unhashHTMLSpans.before",
      text,
      options,
      globals
    );

    for (var i = 0; i < globals.gHtmlSpans.length; ++i) {
      var repText = globals.gHtmlSpans[i],
        // limiter to prevent infinite loop (assume 10 as limit for recurse)
        limit = 0;

      while (/¨C(\d+)C/.test(repText)) {
        var num = RegExp.$1;
        repText = repText.replace("¨C" + num + "C", globals.gHtmlSpans[num]);
        if (limit === 10) {
          console.error("maximum nesting of 10 spans reached!!!");
          break;
        }
        ++limit;
      }
      text = text.replace("¨C" + i + "C", repText);
    }

    text = globals.converter._dispatch(
      "unhashHTMLSpans.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Hash and escape <pre><code> elements that should not be parsed as markdown
   */
  showdown.subParser("hashPreCodeTags", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "hashPreCodeTags.before",
      text,
      options,
      globals
    );

    var repFunc = function (wholeMatch, match, left, right) {
      // encode html entities
      var codeblock =
        left +
        showdown.subParser("encodeCode")(match, options, globals) +
        right;
      return (
        "\n\n¨G" +
        (globals.ghCodeBlocks.push({ text: wholeMatch, codeblock: codeblock }) -
          1) +
        "G\n\n"
      );
    };

    // Hash <pre><code>
    text = showdown.helper.replaceRecursiveRegExp(
      text,
      repFunc,
      "^ {0,3}<pre\\b[^>]*>\\s*<code\\b[^>]*>",
      "^ {0,3}</code>\\s*</pre>",
      "gim"
    );

    text = globals.converter._dispatch(
      "hashPreCodeTags.after",
      text,
      options,
      globals
    );
    return text;
  });

  showdown.subParser("headers", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "headers.before",
      text,
      options,
      globals
    );

    var headerLevelStart = isNaN(parseInt(options.headerLevelStart))
        ? 1
        : parseInt(options.headerLevelStart),
      // Set text-style headers:
      //	Header 1
      //	========
      //
      //	Header 2
      //	--------
      //
      setextRegexH1 = options.smoothLivePreview
        ? /^(.+)[ \t]*\n={2,}[ \t]*\n+/gm
        : /^(.+)[ \t]*\n=+[ \t]*\n+/gm,
      setextRegexH2 = options.smoothLivePreview
        ? /^(.+)[ \t]*\n-{2,}[ \t]*\n+/gm
        : /^(.+)[ \t]*\n-+[ \t]*\n+/gm;

    text = text.replace(setextRegexH1, function (wholeMatch, m1) {
      var spanGamut = showdown.subParser("spanGamut")(m1, options, globals),
        hID = options.noHeaderId ? "" : ' id="' + headerId(m1) + '"',
        hLevel = headerLevelStart,
        hashBlock =
          "<h" + hLevel + hID + ">" + spanGamut + "</h" + hLevel + ">";
      return showdown.subParser("hashBlock")(hashBlock, options, globals);
    });

    text = text.replace(setextRegexH2, function (matchFound, m1) {
      var spanGamut = showdown.subParser("spanGamut")(m1, options, globals),
        hID = options.noHeaderId ? "" : ' id="' + headerId(m1) + '"',
        hLevel = headerLevelStart + 1,
        hashBlock =
          "<h" + hLevel + hID + ">" + spanGamut + "</h" + hLevel + ">";
      return showdown.subParser("hashBlock")(hashBlock, options, globals);
    });

    // atx-style headers:
    //  # Header 1
    //  ## Header 2
    //  ## Header 2 with closing hashes ##
    //  ...
    //  ###### Header 6
    //
    var atxStyle = options.requireSpaceBeforeHeadingText
      ? /^(#{1,6})[ \t]+(.+?)[ \t]*#*\n+/gm
      : /^(#{1,6})[ \t]*(.+?)[ \t]*#*\n+/gm;

    text = text.replace(atxStyle, function (wholeMatch, m1, m2) {
      var hText = m2;
      if (options.customizedHeaderId) {
        hText = m2.replace(/\s?\{([^{]+?)}\s*$/, "");
      }

      var span = showdown.subParser("spanGamut")(hText, options, globals),
        hID = options.noHeaderId ? "" : ' id="' + headerId(m2) + '"',
        hLevel = headerLevelStart - 1 + m1.length,
        header = "<h" + hLevel + hID + ">" + span + "</h" + hLevel + ">";

      return showdown.subParser("hashBlock")(header, options, globals);
    });

    function headerId(m) {
      var title, prefix;

      // It is separate from other options to allow combining prefix and customized
      if (options.customizedHeaderId) {
        var match = m.match(/\{([^{]+?)}\s*$/);
        if (match && match[1]) {
          m = match[1];
        }
      }

      title = m;

      // Prefix id to prevent causing inadvertent pre-existing style matches.
      if (showdown.helper.isString(options.prefixHeaderId)) {
        prefix = options.prefixHeaderId;
      } else if (options.prefixHeaderId === true) {
        prefix = "section-";
      } else {
        prefix = "";
      }

      if (!options.rawPrefixHeaderId) {
        title = prefix + title;
      }

      if (options.ghCompatibleHeaderId) {
        title = title
          .replace(/ /g, "-")
          // replace previously escaped chars (&, ¨ and $)
          .replace(/&amp;/g, "")
          .replace(/¨T/g, "")
          .replace(/¨D/g, "")
          // replace rest of the chars (&~$ are repeated as they might have been escaped)
          // borrowed from github's redcarpet (some they should produce similar results)
          .replace(/[&+$,\/:;=?@"#{}|^¨~\[\]`\\*)(%.!'<>]/g, "")
          .toLowerCase();
      } else if (options.rawHeaderId) {
        title = title
          .replace(/ /g, "-")
          // replace previously escaped chars (&, ¨ and $)
          .replace(/&amp;/g, "&")
          .replace(/¨T/g, "¨")
          .replace(/¨D/g, "$")
          // replace " and '
          .replace(/["']/g, "-")
          .toLowerCase();
      } else {
        title = title.replace(/[^\w]/g, "").toLowerCase();
      }

      if (options.rawPrefixHeaderId) {
        title = prefix + title;
      }

      if (globals.hashLinkCounts[title]) {
        title = title + "-" + globals.hashLinkCounts[title]++;
      } else {
        globals.hashLinkCounts[title] = 1;
      }
      return title;
    }

    text = globals.converter._dispatch("headers.after", text, options, globals);
    return text;
  });

  /**
   * Turn Markdown link shortcuts into XHTML <a> tags.
   */
  showdown.subParser("horizontalRule", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "horizontalRule.before",
      text,
      options,
      globals
    );

    var key = showdown.subParser("hashBlock")("<hr />", options, globals);
    text = text.replace(/^ {0,2}( ?-){3,}[ \t]*$/gm, key);
    text = text.replace(/^ {0,2}( ?\*){3,}[ \t]*$/gm, key);
    text = text.replace(/^ {0,2}( ?_){3,}[ \t]*$/gm, key);

    text = globals.converter._dispatch(
      "horizontalRule.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Turn Markdown image shortcuts into <img> tags.
   */
  showdown.subParser("images", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch("images.before", text, options, globals);

    var inlineRegExp =
        /!\[([^\]]*?)][ \t]*()\([ \t]?<?([\S]+?(?:\([\S]*?\)[\S]*?)?)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(["'])([^"]*?)\6)?[ \t]?\)/g,
      crazyRegExp =
        /!\[([^\]]*?)][ \t]*()\([ \t]?<([^>]*)>(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(?:(["'])([^"]*?)\6))?[ \t]?\)/g,
      base64RegExp =
        /!\[([^\]]*?)][ \t]*()\([ \t]?<?(data:.+?\/.+?;base64,[A-Za-z0-9+/=\n]+?)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*(?:(["'])([^"]*?)\6)?[ \t]?\)/g,
      referenceRegExp = /!\[([^\]]*?)] ?(?:\n *)?\[([\s\S]*?)]()()()()()/g,
      refShortcutRegExp = /!\[([^\[\]]+)]()()()()()/g;

    function writeImageTagBase64(
      wholeMatch,
      altText,
      linkId,
      url,
      width,
      height,
      m5,
      title
    ) {
      url = url.replace(/\s/g, "");
      return writeImageTag(
        wholeMatch,
        altText,
        linkId,
        url,
        width,
        height,
        m5,
        title
      );
    }

    function writeImageTag(
      wholeMatch,
      altText,
      linkId,
      url,
      width,
      height,
      m5,
      title
    ) {
      var gUrls = globals.gUrls,
        gTitles = globals.gTitles,
        gDims = globals.gDimensions;

      linkId = linkId.toLowerCase();

      if (!title) {
        title = "";
      }
      // Special case for explicit empty url
      if (wholeMatch.search(/\(<?\s*>? ?(['"].*['"])?\)$/m) > -1) {
        url = "";
      } else if (url === "" || url === null) {
        if (linkId === "" || linkId === null) {
          // lower-case and turn embedded newlines into spaces
          linkId = altText.toLowerCase().replace(/ ?\n/g, " ");
        }
        url = "#" + linkId;

        if (!showdown.helper.isUndefined(gUrls[linkId])) {
          url = gUrls[linkId];
          if (!showdown.helper.isUndefined(gTitles[linkId])) {
            title = gTitles[linkId];
          }
          if (!showdown.helper.isUndefined(gDims[linkId])) {
            width = gDims[linkId].width;
            height = gDims[linkId].height;
          }
        } else {
          return wholeMatch;
        }
      }

      altText = altText
        .replace(/"/g, "&quot;")
        //altText = showdown.helper.escapeCharacters(altText, '*_', false);
        .replace(
          showdown.helper.regexes.asteriskDashAndColon,
          showdown.helper.escapeCharactersCallback
        );
      //url = showdown.helper.escapeCharacters(url, '*_', false);
      url = url.replace(
        showdown.helper.regexes.asteriskDashAndColon,
        showdown.helper.escapeCharactersCallback
      );
      var result = '<img src="' + url + '" alt="' + altText + '"';

      if (title && showdown.helper.isString(title)) {
        title = title
          .replace(/"/g, "&quot;")
          //title = showdown.helper.escapeCharacters(title, '*_', false);
          .replace(
            showdown.helper.regexes.asteriskDashAndColon,
            showdown.helper.escapeCharactersCallback
          );
        result += ' title="' + title + '"';
      }

      if (width && height) {
        width = width === "*" ? "auto" : width;
        height = height === "*" ? "auto" : height;

        result += ' width="' + width + '"';
        result += ' height="' + height + '"';
      }

      result += " />";

      return result;
    }

    // First, handle reference-style labeled images: ![alt text][id]
    text = text.replace(referenceRegExp, writeImageTag);

    // Next, handle inline images:  ![alt text](url =<width>x<height> "optional title")

    // base64 encoded images
    text = text.replace(base64RegExp, writeImageTagBase64);

    // cases with crazy urls like ./image/cat1).png
    text = text.replace(crazyRegExp, writeImageTag);

    // normal cases
    text = text.replace(inlineRegExp, writeImageTag);

    // handle reference-style shortcuts: ![img text]
    text = text.replace(refShortcutRegExp, writeImageTag);

    text = globals.converter._dispatch("images.after", text, options, globals);
    return text;
  });

  showdown.subParser("italicsAndBold", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "italicsAndBold.before",
      text,
      options,
      globals
    );

    // it's faster to have 3 separate regexes for each case than have just one
    // because of backtracing, in some cases, it could lead to an exponential effect
    // called "catastrophic backtrace". Ominous!

    function parseInside(txt, left, right) {
      /*
          if (options.simplifiedAutoLink) {
            txt = showdown.subParser('simplifiedAutoLinks')(txt, options, globals);
          }
          */
      return left + txt + right;
    }

    // Parse underscores
    if (options.literalMidWordUnderscores) {
      text = text.replace(/\b___(\S[\s\S]*?)___\b/g, function (wm, txt) {
        return parseInside(txt, "<strong><em>", "</em></strong>");
      });
      text = text.replace(/\b__(\S[\s\S]*?)__\b/g, function (wm, txt) {
        return parseInside(txt, "<strong>", "</strong>");
      });
      text = text.replace(/\b_(\S[\s\S]*?)_\b/g, function (wm, txt) {
        return parseInside(txt, "<em>", "</em>");
      });
    } else {
      text = text.replace(/___(\S[\s\S]*?)___/g, function (wm, m) {
        return /\S$/.test(m)
          ? parseInside(m, "<strong><em>", "</em></strong>")
          : wm;
      });
      text = text.replace(/__(\S[\s\S]*?)__/g, function (wm, m) {
        return /\S$/.test(m) ? parseInside(m, "<strong>", "</strong>") : wm;
      });
      text = text.replace(/_([^\s_][\s\S]*?)_/g, function (wm, m) {
        // !/^_[^_]/.test(m) - test if it doesn't start with __ (since it seems redundant, we removed it)
        return /\S$/.test(m) ? parseInside(m, "<em>", "</em>") : wm;
      });
    }

    // Now parse asterisks
    if (options.literalMidWordAsterisks) {
      text = text.replace(
        /([^*]|^)\B\*\*\*(\S[\s\S]*?)\*\*\*\B(?!\*)/g,
        function (wm, lead, txt) {
          return parseInside(txt, lead + "<strong><em>", "</em></strong>");
        }
      );
      text = text.replace(
        /([^*]|^)\B\*\*(\S[\s\S]*?)\*\*\B(?!\*)/g,
        function (wm, lead, txt) {
          return parseInside(txt, lead + "<strong>", "</strong>");
        }
      );
      text = text.replace(
        /([^*]|^)\B\*(\S[\s\S]*?)\*\B(?!\*)/g,
        function (wm, lead, txt) {
          return parseInside(txt, lead + "<em>", "</em>");
        }
      );
    } else {
      text = text.replace(/\*\*\*(\S[\s\S]*?)\*\*\*/g, function (wm, m) {
        return /\S$/.test(m)
          ? parseInside(m, "<strong><em>", "</em></strong>")
          : wm;
      });
      text = text.replace(/\*\*(\S[\s\S]*?)\*\*/g, function (wm, m) {
        return /\S$/.test(m) ? parseInside(m, "<strong>", "</strong>") : wm;
      });
      text = text.replace(/\*([^\s*][\s\S]*?)\*/g, function (wm, m) {
        // !/^\*[^*]/.test(m) - test if it doesn't start with ** (since it seems redundant, we removed it)
        return /\S$/.test(m) ? parseInside(m, "<em>", "</em>") : wm;
      });
    }

    text = globals.converter._dispatch(
      "italicsAndBold.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Form HTML ordered (numbered) and unordered (bulleted) lists.
   */
  showdown.subParser("lists", function (text, options, globals) {
    "use strict";

    /**
     * Process the contents of a single ordered or unordered list, splitting it
     * into individual list items.
     * @param {string} listStr
     * @param {boolean} trimTrailing
     * @returns {string}
     */
    function processListItems(listStr, trimTrailing) {
      // The $g_list_level global keeps track of when we're inside a list.
      // Each time we enter a list, we increment it; when we leave a list,
      // we decrement. If it's zero, we're not in a list anymore.
      //
      // We do this because when we're not inside a list, we want to treat
      // something like this:
      //
      //    I recommend upgrading to version
      //    8. Oops, now this line is treated
      //    as a sub-list.
      //
      // As a single paragraph, despite the fact that the second line starts
      // with a digit-period-space sequence.
      //
      // Whereas when we're inside a list (or sub-list), that line will be
      // treated as the start of a sub-list. What a kludge, huh? This is
      // an aspect of Markdown's syntax that's hard to parse perfectly
      // without resorting to mind-reading. Perhaps the solution is to
      // change the syntax rules such that sub-lists must start with a
      // starting cardinal number; e.g. "1." or "a.".
      globals.gListLevel++;

      // trim trailing blank lines:
      listStr = listStr.replace(/\n{2,}$/, "\n");

      // attacklab: add sentinel to emulate \z
      listStr += "¨0";

      var rgx =
          /(\n)?(^ {0,3})([*+-]|\d+[.])[ \t]+((\[(x|X| )?])?[ \t]*[^\r]+?(\n{1,2}))(?=\n*(¨0| {0,3}([*+-]|\d+[.])[ \t]+))/gm,
        isParagraphed = /\n[ \t]*\n(?!¨0)/.test(listStr);

      // Since version 1.5, nesting sublists requires 4 spaces (or 1 tab) indentation,
      // which is a syntax breaking change
      // activating this option reverts to old behavior
      if (options.disableForced4SpacesIndentedSublists) {
        rgx =
          /(\n)?(^ {0,3})([*+-]|\d+[.])[ \t]+((\[(x|X| )?])?[ \t]*[^\r]+?(\n{1,2}))(?=\n*(¨0|\2([*+-]|\d+[.])[ \t]+))/gm;
      }

      listStr = listStr.replace(
        rgx,
        function (wholeMatch, m1, m2, m3, m4, taskbtn, checked) {
          checked = checked && checked.trim() !== "";

          var item = showdown.subParser("outdent")(m4, options, globals),
            bulletStyle = "";

          // Support for github tasklists
          if (taskbtn && options.tasklists) {
            bulletStyle =
              ' class="task-list-item" style="list-style-type: none;"';
            item = item.replace(/^[ \t]*\[(x|X| )?]/m, function () {
              var otp =
                '<input type="checkbox" disabled style="margin: 0px 0.35em 0.25em -1.6em; vertical-align: middle;"';
              if (checked) {
                otp += " checked";
              }
              otp += ">";
              return otp;
            });
          }

          // ISSUE #312
          // This input: - - - a
          // causes trouble to the parser, since it interprets it as:
          // <ul><li><li><li>a</li></li></li></ul>
          // instead of:
          // <ul><li>- - a</li></ul>
          // So, to prevent it, we will put a marker (¨A)in the beginning of the line
          // Kind of hackish/monkey patching, but seems more effective than overcomplicating the list parser
          item = item.replace(/^([-*+]|\d\.)[ \t]+[\S\n ]*/g, function (wm2) {
            return "¨A" + wm2;
          });

          // m1 - Leading line or
          // Has a double return (multi paragraph) or
          // Has sublist
          if (m1 || item.search(/\n{2,}/) > -1) {
            item = showdown.subParser("githubCodeBlocks")(
              item,
              options,
              globals
            );
            item = showdown.subParser("blockGamut")(item, options, globals);
          } else {
            // Recursion for sub-lists:
            item = showdown.subParser("lists")(item, options, globals);
            item = item.replace(/\n$/, ""); // chomp(item)
            item = showdown.subParser("hashHTMLBlocks")(item, options, globals);

            // Colapse double linebreaks
            item = item.replace(/\n\n+/g, "\n\n");
            if (isParagraphed) {
              item = showdown.subParser("paragraphs")(item, options, globals);
            } else {
              item = showdown.subParser("spanGamut")(item, options, globals);
            }
          }

          // now we need to remove the marker (¨A)
          item = item.replace("¨A", "");
          // we can finally wrap the line in list item tags
          item = "<li" + bulletStyle + ">" + item + "</li>\n";

          return item;
        }
      );

      // attacklab: strip sentinel
      listStr = listStr.replace(/¨0/g, "");

      globals.gListLevel--;

      if (trimTrailing) {
        listStr = listStr.replace(/\s+$/, "");
      }

      return listStr;
    }

    function styleStartNumber(list, listType) {
      // check if ol and starts by a number different than 1
      if (listType === "ol") {
        var res = list.match(/^ *(\d+)\./);
        if (res && res[1] !== "1") {
          return ' start="' + res[1] + '"';
        }
      }
      return "";
    }

    /**
     * Check and parse consecutive lists (better fix for issue #142)
     * @param {string} list
     * @param {string} listType
     * @param {boolean} trimTrailing
     * @returns {string}
     */
    function parseConsecutiveLists(list, listType, trimTrailing) {
      // check if we caught 2 or more consecutive lists by mistake
      // we use the counterRgx, meaning if listType is UL we look for OL and vice versa
      var olRgx = options.disableForced4SpacesIndentedSublists
          ? /^ ?\d+\.[ \t]/gm
          : /^ {0,3}\d+\.[ \t]/gm,
        ulRgx = options.disableForced4SpacesIndentedSublists
          ? /^ ?[*+-][ \t]/gm
          : /^ {0,3}[*+-][ \t]/gm,
        counterRxg = listType === "ul" ? olRgx : ulRgx,
        result = "";

      if (list.search(counterRxg) !== -1) {
        (function parseCL(txt) {
          var pos = txt.search(counterRxg),
            style = styleStartNumber(list, listType);
          if (pos !== -1) {
            // slice
            result +=
              "\n\n<" +
              listType +
              style +
              ">\n" +
              processListItems(txt.slice(0, pos), !!trimTrailing) +
              "</" +
              listType +
              ">\n";

            // invert counterType and listType
            listType = listType === "ul" ? "ol" : "ul";
            counterRxg = listType === "ul" ? olRgx : ulRgx;

            //recurse
            parseCL(txt.slice(pos));
          } else {
            result +=
              "\n\n<" +
              listType +
              style +
              ">\n" +
              processListItems(txt, !!trimTrailing) +
              "</" +
              listType +
              ">\n";
          }
        })(list);
      } else {
        var style = styleStartNumber(list, listType);
        result =
          "\n\n<" +
          listType +
          style +
          ">\n" +
          processListItems(list, !!trimTrailing) +
          "</" +
          listType +
          ">\n";
      }

      return result;
    }

    /** Start of list parsing **/
    text = globals.converter._dispatch("lists.before", text, options, globals);
    // add sentinel to hack around khtml/safari bug:
    // http://bugs.webkit.org/show_bug.cgi?id=11231
    text += "¨0";

    if (globals.gListLevel) {
      text = text.replace(
        /^(( {0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(¨0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm,
        function (wholeMatch, list, m2) {
          var listType = m2.search(/[*+-]/g) > -1 ? "ul" : "ol";
          return parseConsecutiveLists(list, listType, true);
        }
      );
    } else {
      text = text.replace(
        /(\n\n|^\n?)(( {0,3}([*+-]|\d+[.])[ \t]+)[^\r]+?(¨0|\n{2,}(?=\S)(?![ \t]*(?:[*+-]|\d+[.])[ \t]+)))/gm,
        function (wholeMatch, m1, list, m3) {
          var listType = m3.search(/[*+-]/g) > -1 ? "ul" : "ol";
          return parseConsecutiveLists(list, listType, false);
        }
      );
    }

    // strip sentinel
    text = text.replace(/¨0/, "");
    text = globals.converter._dispatch("lists.after", text, options, globals);
    return text;
  });

  /**
   * Parse metadata at the top of the document
   */
  showdown.subParser("metadata", function (text, options, globals) {
    "use strict";

    if (!options.metadata) {
      return text;
    }

    text = globals.converter._dispatch(
      "metadata.before",
      text,
      options,
      globals
    );

    function parseMetadataContents(content) {
      // raw is raw so it's not changed in any way
      globals.metadata.raw = content;

      // escape chars forbidden in html attributes
      // double quotes
      content = content
        // ampersand first
        .replace(/&/g, "&amp;")
        // double quotes
        .replace(/"/g, "&quot;");

      content = content.replace(/\n {4}/g, " ");
      content.replace(/^([\S ]+): +([\s\S]+?)$/gm, function (wm, key, value) {
        globals.metadata.parsed[key] = value;
        return "";
      });
    }

    text = text.replace(
      /^\s*«««+(\S*?)\n([\s\S]+?)\n»»»+\n/,
      function (wholematch, format, content) {
        parseMetadataContents(content);
        return "¨M";
      }
    );

    text = text.replace(
      /^\s*---+(\S*?)\n([\s\S]+?)\n---+\n/,
      function (wholematch, format, content) {
        if (format) {
          globals.metadata.format = format;
        }
        parseMetadataContents(content);
        return "¨M";
      }
    );

    text = text.replace(/¨M/g, "");

    text = globals.converter._dispatch(
      "metadata.after",
      text,
      options,
      globals
    );
    return text;
  });

  /**
   * Remove one level of line-leading tabs or spaces
   */
  showdown.subParser("outdent", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "outdent.before",
      text,
      options,
      globals
    );

    // attacklab: hack around Konqueror 3.5.4 bug:
    // "----------bug".replace(/^-/g,"") == "bug"
    text = text.replace(/^(\t|[ ]{1,4})/gm, "¨0"); // attacklab: g_tab_width

    // attacklab: clean up hack
    text = text.replace(/¨0/g, "");

    text = globals.converter._dispatch("outdent.after", text, options, globals);
    return text;
  });

  /**
   *
   */
  showdown.subParser("paragraphs", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "paragraphs.before",
      text,
      options,
      globals
    );
    // Strip leading and trailing lines:
    text = text.replace(/^\n+/g, "");
    text = text.replace(/\n+$/g, "");

    var grafs = text.split(/\n{2,}/g),
      grafsOut = [],
      end = grafs.length; // Wrap <p> tags

    for (var i = 0; i < end; i++) {
      var str = grafs[i];
      // if this is an HTML marker, copy it
      if (str.search(/¨(K|G)(\d+)\1/g) >= 0) {
        grafsOut.push(str);

        // test for presence of characters to prevent empty lines being parsed
        // as paragraphs (resulting in undesired extra empty paragraphs)
      } else if (str.search(/\S/) >= 0) {
        str = showdown.subParser("spanGamut")(str, options, globals);
        str = str.replace(/^([ \t]*)/g, "<p>");
        str += "</p>";
        grafsOut.push(str);
      }
    }

    /** Unhashify HTML blocks */
    end = grafsOut.length;
    for (i = 0; i < end; i++) {
      var blockText = "",
        grafsOutIt = grafsOut[i],
        codeFlag = false;
      // if this is a marker for an html block...
      // use RegExp.test instead of string.search because of QML bug
      while (/¨(K|G)(\d+)\1/.test(grafsOutIt)) {
        var delim = RegExp.$1,
          num = RegExp.$2;

        if (delim === "K") {
          blockText = globals.gHtmlBlocks[num];
        } else {
          // we need to check if ghBlock is a false positive
          if (codeFlag) {
            // use encoded version of all text
            blockText = showdown.subParser("encodeCode")(
              globals.ghCodeBlocks[num].text,
              options,
              globals
            );
          } else {
            blockText = globals.ghCodeBlocks[num].codeblock;
          }
        }
        blockText = blockText.replace(/\$/g, "$$$$"); // Escape any dollar signs

        grafsOutIt = grafsOutIt.replace(/(\n\n)?¨(K|G)\d+\2(\n\n)?/, blockText);
        // Check if grafsOutIt is a pre->code
        if (/^<pre\b[^>]*>\s*<code\b[^>]*>/.test(grafsOutIt)) {
          codeFlag = true;
        }
      }
      grafsOut[i] = grafsOutIt;
    }
    text = grafsOut.join("\n");
    // Strip leading and trailing lines:
    text = text.replace(/^\n+/g, "");
    text = text.replace(/\n+$/g, "");
    return globals.converter._dispatch(
      "paragraphs.after",
      text,
      options,
      globals
    );
  });

  /**
   * Run extension
   */
  showdown.subParser("runExtension", function (ext, text, options, globals) {
    "use strict";

    if (ext.filter) {
      text = ext.filter(text, globals.converter, options);
    } else if (ext.regex) {
      // TODO remove this when old extension loading mechanism is deprecated
      var re = ext.regex;
      if (!(re instanceof RegExp)) {
        re = new RegExp(re, "g");
      }
      text = text.replace(re, ext.replace);
    }

    return text;
  });

  /**
   * These are all the transformations that occur *within* block-level
   * tags like paragraphs, headers, and list items.
   */
  showdown.subParser("spanGamut", function (text, options, globals) {
    "use strict";

    text = globals.converter._dispatch(
      "spanGamut.before",
      text,
      options,
      globals
    );
    text = showdown.subParser("codeSpans")(text, options, globals);
    text = showdown.subParser("escapeSpecialCharsWithinTagAttributes")(
      text,
      options,
      globals
    );
    text = showdown.subParser("encodeBackslashEscapes")(text, options, globals);

    // Process anchor and image tags. Images must come first,
    // because ![foo][f] looks like an anchor.
    text = showdown.subParser("images")(text, options, globals);
    text = showdown.subParser("anchors")(text, options, globals);

    // Make links out of things like `<http://example.com/>`
    // Must come after anchors, because you can use < and >
    // delimiters in inline links like [this](<url>).
    text = showdown.subParser("autoLinks")(text, options, globals);
    text = showdown.subParser("simplifiedAutoLinks")(text, options, globals);
    text = showdown.subParser("emoji")(text, options, globals);
    text = showdown.subParser("underline")(text, options, globals);
    text = showdown.subParser("italicsAndBold")(text, options, globals);
    text = showdown.subParser("strikethrough")(text, options, globals);
    text = showdown.subParser("ellipsis")(text, options, globals);

    // we need to hash HTML tags inside spans
    text = showdown.subParser("hashHTMLSpans")(text, options, globals);

    // now we encode amps and angles
    text = showdown.subParser("encodeAmpsAndAngles")(text, options, globals);

    // Do hard breaks
    if (options.simpleLineBreaks) {
      // GFM style hard breaks
      // only add line breaks if the text does not contain a block (special case for lists)
      if (!/\n\n¨K/.test(text)) {
        text = text.replace(/\n+/g, "<br />\n");
      }
    } else {
      // Vanilla hard breaks
      text = text.replace(/  +\n/g, "<br />\n");
    }

    text = globals.converter._dispatch(
      "spanGamut.after",
      text,
      options,
      globals
    );
    return text;
  });

  showdown.subParser("strikethrough", function (text, options, globals) {
    "use strict";

    function parseInside(txt) {
      if (options.simplifiedAutoLink) {
        txt = showdown.subParser("simplifiedAutoLinks")(txt, options, globals);
      }
      return "<del>" + txt + "</del>";
    }

    if (options.strikethrough) {
      text = globals.converter._dispatch(
        "strikethrough.before",
        text,
        options,
        globals
      );
      text = text.replace(/(?:~){2}([\s\S]+?)(?:~){2}/g, function (wm, txt) {
        return parseInside(txt);
      });
      text = globals.converter._dispatch(
        "strikethrough.after",
        text,
        options,
        globals
      );
    }

    return text;
  });

  /**
   * Strips link definitions from text, stores the URLs and titles in
   * hash references.
   * Link defs are in the form: ^[id]: url "optional title"
   */
  showdown.subParser("stripLinkDefinitions", function (text, options, globals) {
    "use strict";

    var regex =
        /^ {0,3}\[([^\]]+)]:[ \t]*\n?[ \t]*<?([^>\s]+)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*\n?[ \t]*(?:(\n*)["|'(](.+?)["|')][ \t]*)?(?:\n+|(?=¨0))/gm,
      base64Regex =
        /^ {0,3}\[([^\]]+)]:[ \t]*\n?[ \t]*<?(data:.+?\/.+?;base64,[A-Za-z0-9+/=\n]+?)>?(?: =([*\d]+[A-Za-z%]{0,4})x([*\d]+[A-Za-z%]{0,4}))?[ \t]*\n?[ \t]*(?:(\n*)["|'(](.+?)["|')][ \t]*)?(?:\n\n|(?=¨0)|(?=\n\[))/gm;

    // attacklab: sentinel workarounds for lack of \A and \Z, safari\khtml bug
    text += "¨0";

    var replaceFunc = function (
      wholeMatch,
      linkId,
      url,
      width,
      height,
      blankLines,
      title
    ) {
      // if there aren't two instances of linkId it must not be a reference link so back out
      linkId = linkId.toLowerCase();
      if (text.toLowerCase().split(linkId).length - 1 < 2) {
        return wholeMatch;
      }
      if (url.match(/^data:.+?\/.+?;base64,/)) {
        // remove newlines
        globals.gUrls[linkId] = url.replace(/\s/g, "");
      } else {
        globals.gUrls[linkId] = showdown.subParser("encodeAmpsAndAngles")(
          url,
          options,
          globals
        ); // Link IDs are case-insensitive
      }

      if (blankLines) {
        // Oops, found blank lines, so it's not a title.
        // Put back the parenthetical statement we stole.
        return blankLines + title;
      } else {
        if (title) {
          globals.gTitles[linkId] = title.replace(/"|'/g, "&quot;");
        }
        if (options.parseImgDimensions && width && height) {
          globals.gDimensions[linkId] = {
            width: width,
            height: height,
          };
        }
      }
      // Completely remove the definition from the text
      return "";
    };

    // first we try to find base64 link references
    text = text.replace(base64Regex, replaceFunc);

    text = text.replace(regex, replaceFunc);

    // attacklab: strip sentinel
    text = text.replace(/¨0/, "");

    return text;
  });

  showdown.subParser("tables", function (text, options, globals) {
    "use strict";

    if (!options.tables) {
      return text;
    }

    var tableRgx =
        /^ {0,3}\|?.+\|.+\n {0,3}\|?[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*:?[ \t]*(?:[-=]){2,}[\s\S]+?(?:\n\n|¨0)/gm,
      //singeColTblRgx = /^ {0,3}\|.+\|\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n(?: {0,3}\|.+\|\n)+(?:\n\n|¨0)/gm;
      singeColTblRgx =
        /^ {0,3}\|.+\|[ \t]*\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n( {0,3}\|.+\|[ \t]*\n)*(?:\n|¨0)/gm;

    function parseStyles(sLine) {
      if (/^:[ \t]*--*$/.test(sLine)) {
        return ' style="text-align:left;"';
      } else if (/^--*[ \t]*:[ \t]*$/.test(sLine)) {
        return ' style="text-align:right;"';
      } else if (/^:[ \t]*--*[ \t]*:$/.test(sLine)) {
        return ' style="text-align:center;"';
      } else {
        return "";
      }
    }

    function parseHeaders(header, style) {
      var id = "";
      header = header.trim();
      // support both tablesHeaderId and tableHeaderId due to error in documentation so we don't break backwards compatibility
      if (options.tablesHeaderId || options.tableHeaderId) {
        id = ' id="' + header.replace(/ /g, "_").toLowerCase() + '"';
      }
      header = showdown.subParser("spanGamut")(header, options, globals);

      return "<th" + id + style + ">" + header + "</th>\n";
    }

    function parseCells(cell, style) {
      var subText = showdown.subParser("spanGamut")(cell, options, globals);
      return "<td" + style + ">" + subText + "</td>\n";
    }

    function buildTable(headers, cells) {
      var tb = "<table>\n<thead>\n<tr>\n",
        tblLgn = headers.length;

      for (var i = 0; i < tblLgn; ++i) {
        tb += headers[i];
      }
      tb += "</tr>\n</thead>\n<tbody>\n";

      for (i = 0; i < cells.length; ++i) {
        tb += "<tr>\n";
        for (var ii = 0; ii < tblLgn; ++ii) {
          tb += cells[i][ii];
        }
        tb += "</tr>\n";
      }
      tb += "</tbody>\n</table>\n";
      return tb;
    }

    function parseTable(rawTable) {
      var i,
        tableLines = rawTable.split("\n");

      for (i = 0; i < tableLines.length; ++i) {
        // strip wrong first and last column if wrapped tables are used
        if (/^ {0,3}\|/.test(tableLines[i])) {
          tableLines[i] = tableLines[i].replace(/^ {0,3}\|/, "");
        }
        if (/\|[ \t]*$/.test(tableLines[i])) {
          tableLines[i] = tableLines[i].replace(/\|[ \t]*$/, "");
        }
        // parse code spans first, but we only support one line code spans
        tableLines[i] = showdown.subParser("codeSpans")(
          tableLines[i],
          options,
          globals
        );
      }

      var rawHeaders = tableLines[0].split("|").map(function (s) {
          return s.trim();
        }),
        rawStyles = tableLines[1].split("|").map(function (s) {
          return s.trim();
        }),
        rawCells = [],
        headers = [],
        styles = [],
        cells = [];

      tableLines.shift();
      tableLines.shift();

      for (i = 0; i < tableLines.length; ++i) {
        if (tableLines[i].trim() === "") {
          continue;
        }
        rawCells.push(
          tableLines[i].split("|").map(function (s) {
            return s.trim();
          })
        );
      }

      if (rawHeaders.length < rawStyles.length) {
        return rawTable;
      }

      for (i = 0; i < rawStyles.length; ++i) {
        styles.push(parseStyles(rawStyles[i]));
      }

      for (i = 0; i < rawHeaders.length; ++i) {
        if (showdown.helper.isUndefined(styles[i])) {
          styles[i] = "";
        }
        headers.push(parseHeaders(rawHeaders[i], styles[i]));
      }

      for (i = 0; i < rawCells.length; ++i) {
        var row = [];
        for (var ii = 0; ii < headers.length; ++ii) {
          if (showdown.helper.isUndefined(rawCells[i][ii])) {
          }
          row.push(parseCells(rawCells[i][ii], styles[ii]));
        }
        cells.push(row);
      }

      return buildTable(headers, cells);
    }

    text = globals.converter._dispatch("tables.before", text, options, globals);

    // find escaped pipe characters
    text = text.replace(/\\(\|)/g, showdown.helper.escapeCharactersCallback);

    // parse multi column tables
    text = text.replace(tableRgx, parseTable);

    // parse one column tables
    text = text.replace(singeColTblRgx, parseTable);

    text = globals.converter._dispatch("tables.after", text, options, globals);

    return text;
  });

  showdown.subParser("underline", function (text, options, globals) {
    "use strict";

    if (!options.underline) {
      return text;
    }

    text = globals.converter._dispatch(
      "underline.before",
      text,
      options,
      globals
    );

    if (options.literalMidWordUnderscores) {
      text = text.replace(/\b___(\S[\s\S]*?)___\b/g, function (wm, txt) {
        return "<u>" + txt + "</u>";
      });
      text = text.replace(/\b__(\S[\s\S]*?)__\b/g, function (wm, txt) {
        return "<u>" + txt + "</u>";
      });
    } else {
      text = text.replace(/___(\S[\s\S]*?)___/g, function (wm, m) {
        return /\S$/.test(m) ? "<u>" + m + "</u>" : wm;
      });
      text = text.replace(/__(\S[\s\S]*?)__/g, function (wm, m) {
        return /\S$/.test(m) ? "<u>" + m + "</u>" : wm;
      });
    }

    // escape remaining underscores to prevent them being parsed by italic and bold
    text = text.replace(/(_)/g, showdown.helper.escapeCharactersCallback);

    text = globals.converter._dispatch(
      "underline.after",
      text,
      options,
      globals
    );

    return text;
  });

  /**
   * Swap back in all the special characters we've hidden.
   */
  showdown.subParser("unescapeSpecialChars", function (text, options, globals) {
    "use strict";
    text = globals.converter._dispatch(
      "unescapeSpecialChars.before",
      text,
      options,
      globals
    );

    text = text.replace(/¨E(\d+)E/g, function (wholeMatch, m1) {
      var charCodeToReplace = parseInt(m1);
      return String.fromCharCode(charCodeToReplace);
    });

    text = globals.converter._dispatch(
      "unescapeSpecialChars.after",
      text,
      options,
      globals
    );
    return text;
  });

  showdown.subParser("makeMarkdown.blockquote", function (node, globals) {
    "use strict";

    var txt = "";
    if (node.hasChildNodes()) {
      var children = node.childNodes,
        childrenLength = children.length;

      for (var i = 0; i < childrenLength; ++i) {
        var innerTxt = showdown.subParser("makeMarkdown.node")(
          children[i],
          globals
        );

        if (innerTxt === "") {
          continue;
        }
        txt += innerTxt;
      }
    }
    // cleanup
    txt = txt.trim();
    txt = "> " + txt.split("\n").join("\n> ");
    return txt;
  });

  showdown.subParser("makeMarkdown.codeBlock", function (node, globals) {
    "use strict";

    var lang = node.getAttribute("language"),
      num = node.getAttribute("precodenum");
    return "```" + lang + "\n" + globals.preList[num] + "\n```";
  });

  showdown.subParser("makeMarkdown.codeSpan", function (node) {
    "use strict";

    return "`" + node.innerHTML + "`";
  });

  showdown.subParser("makeMarkdown.emphasis", function (node, globals) {
    "use strict";

    var txt = "";
    if (node.hasChildNodes()) {
      txt += "*";
      var children = node.childNodes,
        childrenLength = children.length;
      for (var i = 0; i < childrenLength; ++i) {
        txt += showdown.subParser("makeMarkdown.node")(children[i], globals);
      }
      txt += "*";
    }
    return txt;
  });

  showdown.subParser(
    "makeMarkdown.header",
    function (node, globals, headerLevel) {
      "use strict";

      var headerMark = new Array(headerLevel + 1).join("#"),
        txt = "";

      if (node.hasChildNodes()) {
        txt = headerMark + " ";
        var children = node.childNodes,
          childrenLength = children.length;

        for (var i = 0; i < childrenLength; ++i) {
          txt += showdown.subParser("makeMarkdown.node")(children[i], globals);
        }
      }
      return txt;
    }
  );

  showdown.subParser("makeMarkdown.hr", function () {
    "use strict";

    return "---";
  });

  showdown.subParser("makeMarkdown.image", function (node) {
    "use strict";

    var txt = "";
    if (node.hasAttribute("src")) {
      txt += "![" + node.getAttribute("alt") + "](";
      txt += "<" + node.getAttribute("src") + ">";
      if (node.hasAttribute("width") && node.hasAttribute("height")) {
        txt +=
          " =" + node.getAttribute("width") + "x" + node.getAttribute("height");
      }

      if (node.hasAttribute("title")) {
        txt += ' "' + node.getAttribute("title") + '"';
      }
      txt += ")";
    }
    return txt;
  });

  showdown.subParser("makeMarkdown.links", function (node, globals) {
    "use strict";

    var txt = "";
    if (node.hasChildNodes() && node.hasAttribute("href")) {
      var children = node.childNodes,
        childrenLength = children.length;
      txt = "[";
      for (var i = 0; i < childrenLength; ++i) {
        txt += showdown.subParser("makeMarkdown.node")(children[i], globals);
      }
      txt += "](";
      txt += "<" + node.getAttribute("href") + ">";
      if (node.hasAttribute("title")) {
        txt += ' "' + node.getAttribute("title") + '"';
      }
      txt += ")";
    }
    return txt;
  });

  showdown.subParser("makeMarkdown.list", function (node, globals, type) {
    "use strict";

    var txt = "";
    if (!node.hasChildNodes()) {
      return "";
    }
    var listItems = node.childNodes,
      listItemsLenght = listItems.length,
      listNum = node.getAttribute("start") || 1;

    for (var i = 0; i < listItemsLenght; ++i) {
      if (
        typeof listItems[i].tagName === "undefined" ||
        listItems[i].tagName.toLowerCase() !== "li"
      ) {
        continue;
      }

      // define the bullet to use in list
      var bullet = "";
      if (type === "ol") {
        bullet = listNum.toString() + ". ";
      } else {
        bullet = "- ";
      }

      // parse list item
      txt +=
        bullet +
        showdown.subParser("makeMarkdown.listItem")(listItems[i], globals);
      ++listNum;
    }

    // add comment at the end to prevent consecutive lists to be parsed as one
    txt += "\n<!-- -->\n";
    return txt.trim();
  });

  showdown.subParser("makeMarkdown.listItem", function (node, globals) {
    "use strict";

    var listItemTxt = "";

    var children = node.childNodes,
      childrenLenght = children.length;

    for (var i = 0; i < childrenLenght; ++i) {
      listItemTxt += showdown.subParser("makeMarkdown.node")(
        children[i],
        globals
      );
    }
    // if it's only one liner, we need to add a newline at the end
    if (!/\n$/.test(listItemTxt)) {
      listItemTxt += "\n";
    } else {
      // it's multiparagraph, so we need to indent
      listItemTxt = listItemTxt
        .split("\n")
        .join("\n    ")
        .replace(/^ {4}$/gm, "")
        .replace(/\n\n+/g, "\n\n");
    }

    return listItemTxt;
  });

  showdown.subParser("makeMarkdown.node", function (node, globals, spansOnly) {
    "use strict";

    spansOnly = spansOnly || false;

    var txt = "";

    // edge case of text without wrapper paragraph
    if (node.nodeType === 3) {
      return showdown.subParser("makeMarkdown.txt")(node, globals);
    }

    // HTML comment
    if (node.nodeType === 8) {
      return "<!--" + node.data + "-->\n\n";
    }

    // process only node elements
    if (node.nodeType !== 1) {
      return "";
    }

    var tagName = node.tagName.toLowerCase();

    switch (tagName) {
      //
      // BLOCKS
      //
      case "h1":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.header")(node, globals, 1) +
            "\n\n";
        }
        break;
      case "h2":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.header")(node, globals, 2) +
            "\n\n";
        }
        break;
      case "h3":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.header")(node, globals, 3) +
            "\n\n";
        }
        break;
      case "h4":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.header")(node, globals, 4) +
            "\n\n";
        }
        break;
      case "h5":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.header")(node, globals, 5) +
            "\n\n";
        }
        break;
      case "h6":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.header")(node, globals, 6) +
            "\n\n";
        }
        break;

      case "p":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.paragraph")(node, globals) +
            "\n\n";
        }
        break;

      case "blockquote":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.blockquote")(node, globals) +
            "\n\n";
        }
        break;

      case "hr":
        if (!spansOnly) {
          txt = showdown.subParser("makeMarkdown.hr")(node, globals) + "\n\n";
        }
        break;

      case "ol":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.list")(node, globals, "ol") +
            "\n\n";
        }
        break;

      case "ul":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.list")(node, globals, "ul") +
            "\n\n";
        }
        break;

      case "precode":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.codeBlock")(node, globals) +
            "\n\n";
        }
        break;

      case "pre":
        if (!spansOnly) {
          txt = showdown.subParser("makeMarkdown.pre")(node, globals) + "\n\n";
        }
        break;

      case "table":
        if (!spansOnly) {
          txt =
            showdown.subParser("makeMarkdown.table")(node, globals) + "\n\n";
        }
        break;

      //
      // SPANS
      //
      case "code":
        txt = showdown.subParser("makeMarkdown.codeSpan")(node, globals);
        break;

      case "em":
      case "i":
        txt = showdown.subParser("makeMarkdown.emphasis")(node, globals);
        break;

      case "strong":
      case "b":
        txt = showdown.subParser("makeMarkdown.strong")(node, globals);
        break;

      case "del":
        txt = showdown.subParser("makeMarkdown.strikethrough")(node, globals);
        break;

      case "a":
        txt = showdown.subParser("makeMarkdown.links")(node, globals);
        break;

      case "img":
        txt = showdown.subParser("makeMarkdown.image")(node, globals);
        break;

      default:
        txt = node.outerHTML + "\n\n";
    }

    // common normalization
    // TODO eventually

    return txt;
  });

  showdown.subParser("makeMarkdown.paragraph", function (node, globals) {
    "use strict";

    var txt = "";
    if (node.hasChildNodes()) {
      var children = node.childNodes,
        childrenLength = children.length;
      for (var i = 0; i < childrenLength; ++i) {
        txt += showdown.subParser("makeMarkdown.node")(children[i], globals);
      }
    }

    // some text normalization
    txt = txt.trim();

    return txt;
  });

  showdown.subParser("makeMarkdown.pre", function (node, globals) {
    "use strict";

    var num = node.getAttribute("prenum");
    return "<pre>" + globals.preList[num] + "</pre>";
  });

  showdown.subParser("makeMarkdown.strikethrough", function (node, globals) {
    "use strict";

    var txt = "";
    if (node.hasChildNodes()) {
      txt += "~~";
      var children = node.childNodes,
        childrenLength = children.length;
      for (var i = 0; i < childrenLength; ++i) {
        txt += showdown.subParser("makeMarkdown.node")(children[i], globals);
      }
      txt += "~~";
    }
    return txt;
  });

  showdown.subParser("makeMarkdown.strong", function (node, globals) {
    "use strict";

    var txt = "";
    if (node.hasChildNodes()) {
      txt += "**";
      var children = node.childNodes,
        childrenLength = children.length;
      for (var i = 0; i < childrenLength; ++i) {
        txt += showdown.subParser("makeMarkdown.node")(children[i], globals);
      }
      txt += "**";
    }
    return txt;
  });

  showdown.subParser("makeMarkdown.table", function (node, globals) {
    "use strict";

    var txt = "",
      tableArray = [[], []],
      headings = node.querySelectorAll("thead>tr>th"),
      rows = node.querySelectorAll("tbody>tr"),
      i,
      ii;
    for (i = 0; i < headings.length; ++i) {
      var headContent = showdown.subParser("makeMarkdown.tableCell")(
          headings[i],
          globals
        ),
        allign = "---";

      if (headings[i].hasAttribute("style")) {
        var style = headings[i]
          .getAttribute("style")
          .toLowerCase()
          .replace(/\s/g, "");
        switch (style) {
          case "text-align:left;":
            allign = ":---";
            break;
          case "text-align:right;":
            allign = "---:";
            break;
          case "text-align:center;":
            allign = ":---:";
            break;
        }
      }
      tableArray[0][i] = headContent.trim();
      tableArray[1][i] = allign;
    }

    for (i = 0; i < rows.length; ++i) {
      var r = tableArray.push([]) - 1,
        cols = rows[i].getElementsByTagName("td");

      for (ii = 0; ii < headings.length; ++ii) {
        var cellContent = " ";
        if (typeof cols[ii] !== "undefined") {
          cellContent = showdown.subParser("makeMarkdown.tableCell")(
            cols[ii],
            globals
          );
        }
        tableArray[r].push(cellContent);
      }
    }

    var cellSpacesCount = 3;
    for (i = 0; i < tableArray.length; ++i) {
      for (ii = 0; ii < tableArray[i].length; ++ii) {
        var strLen = tableArray[i][ii].length;
        if (strLen > cellSpacesCount) {
          cellSpacesCount = strLen;
        }
      }
    }

    for (i = 0; i < tableArray.length; ++i) {
      for (ii = 0; ii < tableArray[i].length; ++ii) {
        if (i === 1) {
          if (tableArray[i][ii].slice(-1) === ":") {
            tableArray[i][ii] =
              showdown.helper.padEnd(
                tableArray[i][ii].slice(-1),
                cellSpacesCount - 1,
                "-"
              ) + ":";
          } else {
            tableArray[i][ii] = showdown.helper.padEnd(
              tableArray[i][ii],
              cellSpacesCount,
              "-"
            );
          }
        } else {
          tableArray[i][ii] = showdown.helper.padEnd(
            tableArray[i][ii],
            cellSpacesCount
          );
        }
      }
      txt += "| " + tableArray[i].join(" | ") + " |\n";
    }

    return txt.trim();
  });

  showdown.subParser("makeMarkdown.tableCell", function (node, globals) {
    "use strict";

    var txt = "";
    if (!node.hasChildNodes()) {
      return "";
    }
    var children = node.childNodes,
      childrenLength = children.length;

    for (var i = 0; i < childrenLength; ++i) {
      txt += showdown.subParser("makeMarkdown.node")(
        children[i],
        globals,
        true
      );
    }
    return txt.trim();
  });

  showdown.subParser("makeMarkdown.txt", function (node) {
    "use strict";

    var txt = node.nodeValue;

    // multiple spaces are collapsed
    txt = txt.replace(/ +/g, " ");

    // replace the custom ¨NBSP; with a space
    txt = txt.replace(/¨NBSP;/g, " ");

    // ", <, > and & should replace escaped html entities
    txt = showdown.helper.unescapeHTMLEntities(txt);

    // escape markdown magic characters
    // emphasis, strong and strikethrough - can appear everywhere
    // we also escape pipe (|) because of tables
    // and escape ` because of code blocks and spans
    txt = txt.replace(/([*_~|`])/g, "\\$1");

    // escape > because of blockquotes
    txt = txt.replace(/^(\s*)>/g, "\\$1>");

    // hash character, only troublesome at the beginning of a line because of headers
    txt = txt.replace(/^#/gm, "\\#");

    // horizontal rules
    txt = txt.replace(/^(\s*)([-=]{3,})(\s*)$/, "$1\\$2$3");

    // dot, because of ordered lists, only troublesome at the beginning of a line when preceded by an integer
    txt = txt.replace(/^( {0,3}\d+)\./gm, "$1\\.");

    // +, * and -, at the beginning of a line becomes a list, so we need to escape them also (asterisk was already escaped)
    txt = txt.replace(/^( {0,3})([+-])/gm, "$1\\$2");

    // images and links, ] followed by ( is problematic, so we escape it
    txt = txt.replace(/]([\s]*)\(/g, "\\]$1\\(");

    // reference URIs must also be escaped
    txt = txt.replace(/^ {0,3}\[([\S \t]*?)]:/gm, "\\[$1]:");

    return txt;
  });

  return showdown;
});

//# sourceMappingURL=showdown.js.map