增加用户指南功能

.gitignore

@@ -1,3 +1,5 @@
 /user
 /dicttext/system/*.db
-/dicttext/rich/*.db
+/dicttext/rich/*.db
+font
+appdata

app/dict/index.php

@@ -6,6 +6,7 @@ include "../pcdl/html_head.php";
 <?php
 	require_once("../pcdl/head_bar.php");
 ?>
+<script src="../public/js/marked.js"></script>
 <style>
 		body{
 			margin: unset;
@@ -112,6 +113,23 @@ include "../pcdl/html_head.php";
 			border-radius: 99px;
 			cursor: pointer;
 		}
+		guide{
+			display:inline-block;
+			width:1.4em;
+			height:1.4em;
+			cursor: pointer;
+			background-color:gray;
+		}
+		#guide {
+			width:18em;
+			min-height:30em;
+			background-color:white;
+			box-shadow: 0 0 10px rgba(0,0,0,0.15);
+		}		
+		#guide h1{
+			font-size:2em;
+			font-weight:700;
+		}
 	</style>
 	<!-- tool bar begin-->
 	<div id='search_toolbar' class="search_toolbar">
@@ -138,7 +156,7 @@ include "../pcdl/html_head.php";
 						</div>
 					</div>
                 </div>
-				<button onclick="trubo_split()" style="height: fit-content;border: 1px solid var(--btn-border-color);background: var(--btn-color);border-radius: 4px;font-size: 1.2em;padding: 0.5em;">强力拆分</button>
+				<button onclick="trubo_split()" style="height: fit-content;border: 1px solid var(--btn-border-color);background: var(--btn-color);border-radius: 4px;font-size: 1.2em;padding: 0.5em;">强力拆分<guide gid="comp_split"></guide></button>
                 <div ></div>
 			</div>
 			<div style="display:block;z-index: 5;text-align:center;">
@@ -222,7 +240,27 @@ function GetPageScroll()
         echo "dict_pre_word_click(\"{$_GET["key"]}\")";
         echo "</script>";
     }
-    ?>
+	?>
+	<div id="guide" style="position:absolute;"></div>
+	<script>
+		$("guide").mouseenter(function(){
+			let id = $(this).attr("gid");
+			var guideObj = $(this);
+			$.get("../../documents/users_guide/en/"+id+".md",
+				{
+				},
+			function(data,status){
+				$("#guide").html(marked(data));
+				$("#guide").appendTo(guideObj);
+				//$("#guide").show();
+			});
+		});
+
+		$("guide").mouseout(function(){
+			//$("#guide").hide();
+		});
+
+	</script>
 <?php
 include "../pcdl/html_foot.php";
 ?>

app/public/js/marked.esm.js

@@ -0,0 +1,2488 @@
+/**
+ * marked - a markdown parser
+ * Copyright (c) 2011-2020, Christopher Jeffrey. (MIT Licensed)
+ * https://github.com/markedjs/marked
+ */
+
+/**
+ * DO NOT EDIT THIS FILE
+ * The code in this file is generated from files in ./src/
+ */
+
+function createCommonjsModule(fn, module) {
+	return module = { exports: {} }, fn(module, module.exports), module.exports;
+}
+
+var defaults = createCommonjsModule(function (module) {
+function getDefaults() {
+  return {
+    baseUrl: null,
+    breaks: false,
+    gfm: true,
+    headerIds: true,
+    headerPrefix: '',
+    highlight: null,
+    langPrefix: 'language-',
+    mangle: true,
+    pedantic: false,
+    renderer: null,
+    sanitize: false,
+    sanitizer: null,
+    silent: false,
+    smartLists: false,
+    smartypants: false,
+    tokenizer: null,
+    walkTokens: null,
+    xhtml: false
+  };
+}
+
+function changeDefaults(newDefaults) {
+  module.exports.defaults = newDefaults;
+}
+
+module.exports = {
+  defaults: getDefaults(),
+  getDefaults,
+  changeDefaults
+};
+});
+var defaults_1 = defaults.defaults;
+var defaults_2 = defaults.getDefaults;
+var defaults_3 = defaults.changeDefaults;
+
+/**
+ * Helpers
+ */
+const escapeTest = /[&<>"']/;
+const escapeReplace = /[&<>"']/g;
+const escapeTestNoEncode = /[<>"']|&(?!#?\w+;)/;
+const escapeReplaceNoEncode = /[<>"']|&(?!#?\w+;)/g;
+const escapeReplacements = {
+  '&': '&amp;',
+  '<': '&lt;',
+  '>': '&gt;',
+  '"': '&quot;',
+  "'": '&#39;'
+};
+const getEscapeReplacement = (ch) => escapeReplacements[ch];
+function escape(html, encode) {
+  if (encode) {
+    if (escapeTest.test(html)) {
+      return html.replace(escapeReplace, getEscapeReplacement);
+    }
+  } else {
+    if (escapeTestNoEncode.test(html)) {
+      return html.replace(escapeReplaceNoEncode, getEscapeReplacement);
+    }
+  }
+
+  return html;
+}
+
+const unescapeTest = /&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/ig;
+
+function unescape(html) {
+  // explicitly match decimal, hex, and named HTML entities
+  return html.replace(unescapeTest, (_, n) => {
+    n = n.toLowerCase();
+    if (n === 'colon') return ':';
+    if (n.charAt(0) === '#') {
+      return n.charAt(1) === 'x'
+        ? String.fromCharCode(parseInt(n.substring(2), 16))
+        : String.fromCharCode(+n.substring(1));
+    }
+    return '';
+  });
+}
+
+const caret = /(^|[^\[])\^/g;
+function edit(regex, opt) {
+  regex = regex.source || regex;
+  opt = opt || '';
+  const obj = {
+    replace: (name, val) => {
+      val = val.source || val;
+      val = val.replace(caret, '$1');
+      regex = regex.replace(name, val);
+      return obj;
+    },
+    getRegex: () => {
+      return new RegExp(regex, opt);
+    }
+  };
+  return obj;
+}
+
+const nonWordAndColonTest = /[^\w:]/g;
+const originIndependentUrl = /^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;
+function cleanUrl(sanitize, base, href) {
+  if (sanitize) {
+    let prot;
+    try {
+      prot = decodeURIComponent(unescape(href))
+        .replace(nonWordAndColonTest, '')
+        .toLowerCase();
+    } catch (e) {
+      return null;
+    }
+    if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0 || prot.indexOf('data:') === 0) {
+      return null;
+    }
+  }
+  if (base && !originIndependentUrl.test(href)) {
+    href = resolveUrl(base, href);
+  }
+  try {
+    href = encodeURI(href).replace(/%25/g, '%');
+  } catch (e) {
+    return null;
+  }
+  return href;
+}
+
+const baseUrls = {};
+const justDomain = /^[^:]+:\/*[^/]*$/;
+const protocol = /^([^:]+:)[\s\S]*$/;
+const domain = /^([^:]+:\/*[^/]*)[\s\S]*$/;
+
+function resolveUrl(base, href) {
+  if (!baseUrls[' ' + base]) {
+    // we can ignore everything in base after the last slash of its path component,
+    // but we might need to add _that_
+    // https://tools.ietf.org/html/rfc3986#section-3
+    if (justDomain.test(base)) {
+      baseUrls[' ' + base] = base + '/';
+    } else {
+      baseUrls[' ' + base] = rtrim(base, '/', true);
+    }
+  }
+  base = baseUrls[' ' + base];
+  const relativeBase = base.indexOf(':') === -1;
+
+  if (href.substring(0, 2) === '//') {
+    if (relativeBase) {
+      return href;
+    }
+    return base.replace(protocol, '$1') + href;
+  } else if (href.charAt(0) === '/') {
+    if (relativeBase) {
+      return href;
+    }
+    return base.replace(domain, '$1') + href;
+  } else {
+    return base + href;
+  }
+}
+
+const noopTest = { exec: function noopTest() {} };
+
+function merge(obj) {
+  let i = 1,
+    target,
+    key;
+
+  for (; i < arguments.length; i++) {
+    target = arguments[i];
+    for (key in target) {
+      if (Object.prototype.hasOwnProperty.call(target, key)) {
+        obj[key] = target[key];
+      }
+    }
+  }
+
+  return obj;
+}
+
+function splitCells(tableRow, count) {
+  // ensure that every cell-delimiting pipe has a space
+  // before it to distinguish it from an escaped pipe
+  const row = tableRow.replace(/\|/g, (match, offset, str) => {
+      let escaped = false,
+        curr = offset;
+      while (--curr >= 0 && str[curr] === '\\') escaped = !escaped;
+      if (escaped) {
+        // odd number of slashes means | is escaped
+        // so we leave it alone
+        return '|';
+      } else {
+        // add space before unescaped |
+        return ' |';
+      }
+    }),
+    cells = row.split(/ \|/);
+  let i = 0;
+
+  if (cells.length > count) {
+    cells.splice(count);
+  } else {
+    while (cells.length < count) cells.push('');
+  }
+
+  for (; i < cells.length; i++) {
+    // leading or trailing whitespace is ignored per the gfm spec
+    cells[i] = cells[i].trim().replace(/\\\|/g, '|');
+  }
+  return cells;
+}
+
+// Remove trailing 'c's. Equivalent to str.replace(/c*$/, '').
+// /c*$/ is vulnerable to REDOS.
+// invert: Remove suffix of non-c chars instead. Default falsey.
+function rtrim(str, c, invert) {
+  const l = str.length;
+  if (l === 0) {
+    return '';
+  }
+
+  // Length of suffix matching the invert condition.
+  let suffLen = 0;
+
+  // Step left until we fail to match the invert condition.
+  while (suffLen < l) {
+    const currChar = str.charAt(l - suffLen - 1);
+    if (currChar === c && !invert) {
+      suffLen++;
+    } else if (currChar !== c && invert) {
+      suffLen++;
+    } else {
+      break;
+    }
+  }
+
+  return str.substr(0, l - suffLen);
+}
+
+function findClosingBracket(str, b) {
+  if (str.indexOf(b[1]) === -1) {
+    return -1;
+  }
+  const l = str.length;
+  let level = 0,
+    i = 0;
+  for (; i < l; i++) {
+    if (str[i] === '\\') {
+      i++;
+    } else if (str[i] === b[0]) {
+      level++;
+    } else if (str[i] === b[1]) {
+      level--;
+      if (level < 0) {
+        return i;
+      }
+    }
+  }
+  return -1;
+}
+
+function checkSanitizeDeprecation(opt) {
+  if (opt && opt.sanitize && !opt.silent) {
+    console.warn('marked(): sanitize and sanitizer parameters are deprecated since version 0.7.0, should not be used and will be removed in the future. Read more here: https://marked.js.org/#/USING_ADVANCED.md#options');
+  }
+}
+
+var helpers = {
+  escape,
+  unescape,
+  edit,
+  cleanUrl,
+  resolveUrl,
+  noopTest,
+  merge,
+  splitCells,
+  rtrim,
+  findClosingBracket,
+  checkSanitizeDeprecation
+};
+
+const { defaults: defaults$1 } = defaults;
+const {
+  rtrim: rtrim$1,
+  splitCells: splitCells$1,
+  escape: escape$1,
+  findClosingBracket: findClosingBracket$1
+} = helpers;
+
+function outputLink(cap, link, raw) {
+  const href = link.href;
+  const title = link.title ? escape$1(link.title) : null;
+  const text = cap[1].replace(/\\([\[\]])/g, '$1');
+
+  if (cap[0].charAt(0) !== '!') {
+    return {
+      type: 'link',
+      raw,
+      href,
+      title,
+      text
+    };
+  } else {
+    return {
+      type: 'image',
+      raw,
+      href,
+      title,
+      text: escape$1(text)
+    };
+  }
+}
+
+function indentCodeCompensation(raw, text) {
+  const matchIndentToCode = raw.match(/^(\s+)(?:```)/);
+
+  if (matchIndentToCode === null) {
+    return text;
+  }
+
+  const indentToCode = matchIndentToCode[1];
+
+  return text
+    .split('\n')
+    .map(node => {
+      const matchIndentInNode = node.match(/^\s+/);
+      if (matchIndentInNode === null) {
+        return node;
+      }
+
+      const [indentInNode] = matchIndentInNode;
+
+      if (indentInNode.length >= indentToCode.length) {
+        return node.slice(indentToCode.length);
+      }
+
+      return node;
+    })
+    .join('\n');
+}
+
+/**
+ * Tokenizer
+ */
+var Tokenizer_1 = class Tokenizer {
+  constructor(options) {
+    this.options = options || defaults$1;
+  }
+
+  space(src) {
+    const cap = this.rules.block.newline.exec(src);
+    if (cap) {
+      if (cap[0].length > 1) {
+        return {
+          type: 'space',
+          raw: cap[0]
+        };
+      }
+      return { raw: '\n' };
+    }
+  }
+
+  code(src, tokens) {
+    const cap = this.rules.block.code.exec(src);
+    if (cap) {
+      const lastToken = tokens[tokens.length - 1];
+      // An indented code block cannot interrupt a paragraph.
+      if (lastToken && lastToken.type === 'paragraph') {
+        return {
+          raw: cap[0],
+          text: cap[0].trimRight()
+        };
+      }
+
+      const text = cap[0].replace(/^ {4}/gm, '');
+      return {
+        type: 'code',
+        raw: cap[0],
+        codeBlockStyle: 'indented',
+        text: !this.options.pedantic
+          ? rtrim$1(text, '\n')
+          : text
+      };
+    }
+  }
+
+  fences(src) {
+    const cap = this.rules.block.fences.exec(src);
+    if (cap) {
+      const raw = cap[0];
+      const text = indentCodeCompensation(raw, cap[3] || '');
+
+      return {
+        type: 'code',
+        raw,
+        lang: cap[2] ? cap[2].trim() : cap[2],
+        text
+      };
+    }
+  }
+
+  heading(src) {
+    const cap = this.rules.block.heading.exec(src);
+    if (cap) {
+      return {
+        type: 'heading',
+        raw: cap[0],
+        depth: cap[1].length,
+        text: cap[2]
+      };
+    }
+  }
+
+  nptable(src) {
+    const cap = this.rules.block.nptable.exec(src);
+    if (cap) {
+      const item = {
+        type: 'table',
+        header: splitCells$1(cap[1].replace(/^ *| *\| *$/g, '')),
+        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
+        cells: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : [],
+        raw: cap[0]
+      };
+
+      if (item.header.length === item.align.length) {
+        let l = item.align.length;
+        let i;
+        for (i = 0; i < l; i++) {
+          if (/^ *-+: *$/.test(item.align[i])) {
+            item.align[i] = 'right';
+          } else if (/^ *:-+: *$/.test(item.align[i])) {
+            item.align[i] = 'center';
+          } else if (/^ *:-+ *$/.test(item.align[i])) {
+            item.align[i] = 'left';
+          } else {
+            item.align[i] = null;
+          }
+        }
+
+        l = item.cells.length;
+        for (i = 0; i < l; i++) {
+          item.cells[i] = splitCells$1(item.cells[i], item.header.length);
+        }
+
+        return item;
+      }
+    }
+  }
+
+  hr(src) {
+    const cap = this.rules.block.hr.exec(src);
+    if (cap) {
+      return {
+        type: 'hr',
+        raw: cap[0]
+      };
+    }
+  }
+
+  blockquote(src) {
+    const cap = this.rules.block.blockquote.exec(src);
+    if (cap) {
+      const text = cap[0].replace(/^ *> ?/gm, '');
+
+      return {
+        type: 'blockquote',
+        raw: cap[0],
+        text
+      };
+    }
+  }
+
+  list(src) {
+    const cap = this.rules.block.list.exec(src);
+    if (cap) {
+      let raw = cap[0];
+      const bull = cap[2];
+      const isordered = bull.length > 1;
+      const isparen = bull[bull.length - 1] === ')';
+
+      const list = {
+        type: 'list',
+        raw,
+        ordered: isordered,
+        start: isordered ? +bull.slice(0, -1) : '',
+        loose: false,
+        items: []
+      };
+
+      // Get each top-level item.
+      const itemMatch = cap[0].match(this.rules.block.item);
+
+      let next = false,
+        item,
+        space,
+        b,
+        addBack,
+        loose,
+        istask,
+        ischecked;
+
+      const l = itemMatch.length;
+      for (let i = 0; i < l; i++) {
+        item = itemMatch[i];
+        raw = item;
+
+        // Remove the list item's bullet
+        // so it is seen as the next token.
+        space = item.length;
+        item = item.replace(/^ *([*+-]|\d+[.)]) */, '');
+
+        // Outdent whatever the
+        // list item contains. Hacky.
+        if (~item.indexOf('\n ')) {
+          space -= item.length;
+          item = !this.options.pedantic
+            ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '')
+            : item.replace(/^ {1,4}/gm, '');
+        }
+
+        // Determine whether the next list item belongs here.
+        // Backpedal if it does not belong in this list.
+        if (i !== l - 1) {
+          b = this.rules.block.bullet.exec(itemMatch[i + 1])[0];
+          if (isordered ? b.length === 1 || (!isparen && b[b.length - 1] === ')')
+            : (b.length > 1 || (this.options.smartLists && b !== bull))) {
+            addBack = itemMatch.slice(i + 1).join('\n');
+            list.raw = list.raw.substring(0, list.raw.length - addBack.length);
+            i = l - 1;
+          }
+        }
+
+        // Determine whether item is loose or not.
+        // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
+        // for discount behavior.
+        loose = next || /\n\n(?!\s*$)/.test(item);
+        if (i !== l - 1) {
+          next = item.charAt(item.length - 1) === '\n';
+          if (!loose) loose = next;
+        }
+
+        if (loose) {
+          list.loose = true;
+        }
+
+        // Check for task list items
+        istask = /^\[[ xX]\] /.test(item);
+        ischecked = undefined;
+        if (istask) {
+          ischecked = item[1] !== ' ';
+          item = item.replace(/^\[[ xX]\] +/, '');
+        }
+
+        list.items.push({
+          type: 'list_item',
+          raw,
+          task: istask,
+          checked: ischecked,
+          loose: loose,
+          text: item
+        });
+      }
+
+      return list;
+    }
+  }
+
+  html(src) {
+    const cap = this.rules.block.html.exec(src);
+    if (cap) {
+      return {
+        type: this.options.sanitize
+          ? 'paragraph'
+          : 'html',
+        raw: cap[0],
+        pre: !this.options.sanitizer
+          && (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
+        text: this.options.sanitize ? (this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape$1(cap[0])) : cap[0]
+      };
+    }
+  }
+
+  def(src) {
+    const cap = this.rules.block.def.exec(src);
+    if (cap) {
+      if (cap[3]) cap[3] = cap[3].substring(1, cap[3].length - 1);
+      const tag = cap[1].toLowerCase().replace(/\s+/g, ' ');
+      return {
+        tag,
+        raw: cap[0],
+        href: cap[2],
+        title: cap[3]
+      };
+    }
+  }
+
+  table(src) {
+    const cap = this.rules.block.table.exec(src);
+    if (cap) {
+      const item = {
+        type: 'table',
+        header: splitCells$1(cap[1].replace(/^ *| *\| *$/g, '')),
+        align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
+        cells: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : []
+      };
+
+      if (item.header.length === item.align.length) {
+        item.raw = cap[0];
+
+        let l = item.align.length;
+        let i;
+        for (i = 0; i < l; i++) {
+          if (/^ *-+: *$/.test(item.align[i])) {
+            item.align[i] = 'right';
+          } else if (/^ *:-+: *$/.test(item.align[i])) {
+            item.align[i] = 'center';
+          } else if (/^ *:-+ *$/.test(item.align[i])) {
+            item.align[i] = 'left';
+          } else {
+            item.align[i] = null;
+          }
+        }
+
+        l = item.cells.length;
+        for (i = 0; i < l; i++) {
+          item.cells[i] = splitCells$1(
+            item.cells[i].replace(/^ *\| *| *\| *$/g, ''),
+            item.header.length);
+        }
+
+        return item;
+      }
+    }
+  }
+
+  lheading(src) {
+    const cap = this.rules.block.lheading.exec(src);
+    if (cap) {
+      return {
+        type: 'heading',
+        raw: cap[0],
+        depth: cap[2].charAt(0) === '=' ? 1 : 2,
+        text: cap[1]
+      };
+    }
+  }
+
+  paragraph(src) {
+    const cap = this.rules.block.paragraph.exec(src);
+    if (cap) {
+      return {
+        type: 'paragraph',
+        raw: cap[0],
+        text: cap[1].charAt(cap[1].length - 1) === '\n'
+          ? cap[1].slice(0, -1)
+          : cap[1]
+      };
+    }
+  }
+
+  text(src, tokens) {
+    const cap = this.rules.block.text.exec(src);
+    if (cap) {
+      const lastToken = tokens[tokens.length - 1];
+      if (lastToken && lastToken.type === 'text') {
+        return {
+          raw: cap[0],
+          text: cap[0]
+        };
+      }
+
+      return {
+        type: 'text',
+        raw: cap[0],
+        text: cap[0]
+      };
+    }
+  }
+
+  escape(src) {
+    const cap = this.rules.inline.escape.exec(src);
+    if (cap) {
+      return {
+        type: 'escape',
+        raw: cap[0],
+        text: escape$1(cap[1])
+      };
+    }
+  }
+
+  tag(src, inLink, inRawBlock) {
+    const cap = this.rules.inline.tag.exec(src);
+    if (cap) {
+      if (!inLink && /^<a /i.test(cap[0])) {
+        inLink = true;
+      } else if (inLink && /^<\/a>/i.test(cap[0])) {
+        inLink = false;
+      }
+      if (!inRawBlock && /^<(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
+        inRawBlock = true;
+      } else if (inRawBlock && /^<\/(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
+        inRawBlock = false;
+      }
+
+      return {
+        type: this.options.sanitize
+          ? 'text'
+          : 'html',
+        raw: cap[0],
+        inLink,
+        inRawBlock,
+        text: this.options.sanitize
+          ? (this.options.sanitizer
+            ? this.options.sanitizer(cap[0])
+            : escape$1(cap[0]))
+          : cap[0]
+      };
+    }
+  }
+
+  link(src) {
+    const cap = this.rules.inline.link.exec(src);
+    if (cap) {
+      const lastParenIndex = findClosingBracket$1(cap[2], '()');
+      if (lastParenIndex > -1) {
+        const start = cap[0].indexOf('!') === 0 ? 5 : 4;
+        const linkLen = start + cap[1].length + lastParenIndex;
+        cap[2] = cap[2].substring(0, lastParenIndex);
+        cap[0] = cap[0].substring(0, linkLen).trim();
+        cap[3] = '';
+      }
+      let href = cap[2];
+      let title = '';
+      if (this.options.pedantic) {
+        const link = /^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(href);
+
+        if (link) {
+          href = link[1];
+          title = link[3];
+        } else {
+          title = '';
+        }
+      } else {
+        title = cap[3] ? cap[3].slice(1, -1) : '';
+      }
+      href = href.trim().replace(/^<([\s\S]*)>$/, '$1');
+      const token = outputLink(cap, {
+        href: href ? href.replace(this.rules.inline._escapes, '$1') : href,
+        title: title ? title.replace(this.rules.inline._escapes, '$1') : title
+      }, cap[0]);
+      return token;
+    }
+  }
+
+  reflink(src, links) {
+    let cap;
+    if ((cap = this.rules.inline.reflink.exec(src))
+        || (cap = this.rules.inline.nolink.exec(src))) {
+      let link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
+      link = links[link.toLowerCase()];
+      if (!link || !link.href) {
+        const text = cap[0].charAt(0);
+        return {
+          type: 'text',
+          raw: text,
+          text
+        };
+      }
+      const token = outputLink(cap, link, cap[0]);
+      return token;
+    }
+  }
+
+  strong(src, maskedSrc, prevChar = '') {
+    let match = this.rules.inline.strong.start.exec(src);
+
+    if (match && (!match[1] || (match[1] && (prevChar === '' || this.rules.inline.punctuation.exec(prevChar))))) {
+      maskedSrc = maskedSrc.slice(-1 * src.length);
+      const endReg = match[0] === '**' ? this.rules.inline.strong.endAst : this.rules.inline.strong.endUnd;
+
+      endReg.lastIndex = 0;
+
+      let cap;
+      while ((match = endReg.exec(maskedSrc)) != null) {
+        cap = this.rules.inline.strong.middle.exec(maskedSrc.slice(0, match.index + 3));
+        if (cap) {
+          return {
+            type: 'strong',
+            raw: src.slice(0, cap[0].length),
+            text: src.slice(2, cap[0].length - 2)
+          };
+        }
+      }
+    }
+  }
+
+  em(src, maskedSrc, prevChar = '') {
+    let match = this.rules.inline.em.start.exec(src);
+
+    if (match && (!match[1] || (match[1] && (prevChar === '' || this.rules.inline.punctuation.exec(prevChar))))) {
+      maskedSrc = maskedSrc.slice(-1 * src.length);
+      const endReg = match[0] === '*' ? this.rules.inline.em.endAst : this.rules.inline.em.endUnd;
+
+      endReg.lastIndex = 0;
+
+      let cap;
+      while ((match = endReg.exec(maskedSrc)) != null) {
+        cap = this.rules.inline.em.middle.exec(maskedSrc.slice(0, match.index + 2));
+        if (cap) {
+          return {
+            type: 'em',
+            raw: src.slice(0, cap[0].length),
+            text: src.slice(1, cap[0].length - 1)
+          };
+        }
+      }
+    }
+  }
+
+  codespan(src) {
+    const cap = this.rules.inline.code.exec(src);
+    if (cap) {
+      let text = cap[2].replace(/\n/g, ' ');
+      const hasNonSpaceChars = /[^ ]/.test(text);
+      const hasSpaceCharsOnBothEnds = text.startsWith(' ') && text.endsWith(' ');
+      if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {
+        text = text.substring(1, text.length - 1);
+      }
+      text = escape$1(text, true);
+      return {
+        type: 'codespan',
+        raw: cap[0],
+        text
+      };
+    }
+  }
+
+  br(src) {
+    const cap = this.rules.inline.br.exec(src);
+    if (cap) {
+      return {
+        type: 'br',
+        raw: cap[0]
+      };
+    }
+  }
+
+  del(src) {
+    const cap = this.rules.inline.del.exec(src);
+    if (cap) {
+      return {
+        type: 'del',
+        raw: cap[0],
+        text: cap[1]
+      };
+    }
+  }
+
+  autolink(src, mangle) {
+    const cap = this.rules.inline.autolink.exec(src);
+    if (cap) {
+      let text, href;
+      if (cap[2] === '@') {
+        text = escape$1(this.options.mangle ? mangle(cap[1]) : cap[1]);
+        href = 'mailto:' + text;
+      } else {
+        text = escape$1(cap[1]);
+        href = text;
+      }
+
+      return {
+        type: 'link',
+        raw: cap[0],
+        text,
+        href,
+        tokens: [
+          {
+            type: 'text',
+            raw: text,
+            text
+          }
+        ]
+      };
+    }
+  }
+
+  url(src, mangle) {
+    let cap;
+    if (cap = this.rules.inline.url.exec(src)) {
+      let text, href;
+      if (cap[2] === '@') {
+        text = escape$1(this.options.mangle ? mangle(cap[0]) : cap[0]);
+        href = 'mailto:' + text;
+      } else {
+        // do extended autolink path validation
+        let prevCapZero;
+        do {
+          prevCapZero = cap[0];
+          cap[0] = this.rules.inline._backpedal.exec(cap[0])[0];
+        } while (prevCapZero !== cap[0]);
+        text = escape$1(cap[0]);
+        if (cap[1] === 'www.') {
+          href = 'http://' + text;
+        } else {
+          href = text;
+        }
+      }
+      return {
+        type: 'link',
+        raw: cap[0],
+        text,
+        href,
+        tokens: [
+          {
+            type: 'text',
+            raw: text,
+            text
+          }
+        ]
+      };
+    }
+  }
+
+  inlineText(src, inRawBlock, smartypants) {
+    const cap = this.rules.inline.text.exec(src);
+    if (cap) {
+      let text;
+      if (inRawBlock) {
+        text = this.options.sanitize ? (this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape$1(cap[0])) : cap[0];
+      } else {
+        text = escape$1(this.options.smartypants ? smartypants(cap[0]) : cap[0]);
+      }
+      return {
+        type: 'text',
+        raw: cap[0],
+        text
+      };
+    }
+  }
+};
+
+const {
+  noopTest: noopTest$1,
+  edit: edit$1,
+  merge: merge$1
+} = helpers;
+
+/**
+ * Block-Level Grammar
+ */
+const block = {
+  newline: /^\n+/,
+  code: /^( {4}[^\n]+\n*)+/,
+  fences: /^ {0,3}(`{3,}(?=[^`\n]*\n)|~{3,})([^\n]*)\n(?:|([\s\S]*?)\n)(?: {0,3}\1[~`]* *(?:\n+|$)|$)/,
+  hr: /^ {0,3}((?:- *){3,}|(?:_ *){3,}|(?:\* *){3,})(?:\n+|$)/,
+  heading: /^ {0,3}(#{1,6}) +([^\n]*?)(?: +#+)? *(?:\n+|$)/,
+  blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/,
+  list: /^( {0,3})(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
+  html: '^ {0,3}(?:' // optional indentation
+    + '<(script|pre|style)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)' // (1)
+    + '|comment[^\\n]*(\\n+|$)' // (2)
+    + '|<\\?[\\s\\S]*?\\?>\\n*' // (3)
+    + '|<![A-Z][\\s\\S]*?>\\n*' // (4)
+    + '|<!\\[CDATA\\[[\\s\\S]*?\\]\\]>\\n*' // (5)
+    + '|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:\\n{2,}|$)' // (6)
+    + '|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$)' // (7) open tag
+    + '|</(?!script|pre|style)[a-z][\\w-]*\\s*>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$)' // (7) closing tag
+    + ')',
+  def: /^ {0,3}\[(label)\]: *\n? *<?([^\s>]+)>?(?:(?: +\n? *| *\n *)(title))? *(?:\n+|$)/,
+  nptable: noopTest$1,
+  table: noopTest$1,
+  lheading: /^([^\n]+)\n {0,3}(=+|-+) *(?:\n+|$)/,
+  // regex template, placeholders will be replaced according to different paragraph
+  // interruption rules of commonmark and the original markdown spec:
+  _paragraph: /^([^\n]+(?:\n(?!hr|heading|lheading|blockquote|fences|list|html)[^\n]+)*)/,
+  text: /^[^\n]+/
+};
+
+block._label = /(?!\s*\])(?:\\[\[\]]|[^\[\]])+/;
+block._title = /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/;
+block.def = edit$1(block.def)
+  .replace('label', block._label)
+  .replace('title', block._title)
+  .getRegex();
+
+block.bullet = /(?:[*+-]|\d{1,9}[.)])/;
+block.item = /^( *)(bull) ?[^\n]*(?:\n(?!\1bull ?)[^\n]*)*/;
+block.item = edit$1(block.item, 'gm')
+  .replace(/bull/g, block.bullet)
+  .getRegex();
+
+block.list = edit$1(block.list)
+  .replace(/bull/g, block.bullet)
+  .replace('hr', '\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))')
+  .replace('def', '\\n+(?=' + block.def.source + ')')
+  .getRegex();
+
+block._tag = 'address|article|aside|base|basefont|blockquote|body|caption'
+  + '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption'
+  + '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe'
+  + '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option'
+  + '|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr'
+  + '|track|ul';
+block._comment = /<!--(?!-?>)[\s\S]*?-->/;
+block.html = edit$1(block.html, 'i')
+  .replace('comment', block._comment)
+  .replace('tag', block._tag)
+  .replace('attribute', / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/)
+  .getRegex();
+
+block.paragraph = edit$1(block._paragraph)
+  .replace('hr', block.hr)
+  .replace('heading', ' {0,3}#{1,6} ')
+  .replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs
+  .replace('blockquote', ' {0,3}>')
+  .replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
+  .replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+  .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)')
+  .replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
+  .getRegex();
+
+block.blockquote = edit$1(block.blockquote)
+  .replace('paragraph', block.paragraph)
+  .getRegex();
+
+/**
+ * Normal Block Grammar
+ */
+
+block.normal = merge$1({}, block);
+
+/**
+ * GFM Block Grammar
+ */
+
+block.gfm = merge$1({}, block.normal, {
+  nptable: '^ *([^|\\n ].*\\|.*)\\n' // Header
+    + ' *([-:]+ *\\|[-| :]*)' // Align
+    + '(?:\\n((?:(?!\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)', // Cells
+  table: '^ *\\|(.+)\\n' // Header
+    + ' *\\|?( *[-:]+[-| :]*)' // Align
+    + '(?:\\n *((?:(?!\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)' // Cells
+});
+
+block.gfm.nptable = edit$1(block.gfm.nptable)
+  .replace('hr', block.hr)
+  .replace('heading', ' {0,3}#{1,6} ')
+  .replace('blockquote', ' {0,3}>')
+  .replace('code', ' {4}[^\\n]')
+  .replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
+  .replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+  .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)')
+  .replace('tag', block._tag) // tables can be interrupted by type (6) html blocks
+  .getRegex();
+
+block.gfm.table = edit$1(block.gfm.table)
+  .replace('hr', block.hr)
+  .replace('heading', ' {0,3}#{1,6} ')
+  .replace('blockquote', ' {0,3}>')
+  .replace('code', ' {4}[^\\n]')
+  .replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
+  .replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+  .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)')
+  .replace('tag', block._tag) // tables can be interrupted by type (6) html blocks
+  .getRegex();
+
+/**
+ * Pedantic grammar (original John Gruber's loose markdown specification)
+ */
+
+block.pedantic = merge$1({}, block.normal, {
+  html: edit$1(
+    '^ *(?:comment *(?:\\n|\\s*$)'
+    + '|<(tag)[\\s\\S]+?</\\1> *(?:\\n{2,}|\\s*$)' // closed tag
+    + '|<tag(?:"[^"]*"|\'[^\']*\'|\\s[^\'"/>\\s]*)*?/?> *(?:\\n{2,}|\\s*$))')
+    .replace('comment', block._comment)
+    .replace(/tag/g, '(?!(?:'
+      + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub'
+      + '|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)'
+      + '\\b)\\w+(?!:|[^\\w\\s@]*@)\\b')
+    .getRegex(),
+  def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,
+  heading: /^ *(#{1,6}) *([^\n]+?) *(?:#+ *)?(?:\n+|$)/,
+  fences: noopTest$1, // fences not supported
+  paragraph: edit$1(block.normal._paragraph)
+    .replace('hr', block.hr)
+    .replace('heading', ' *#{1,6} *[^\n]')
+    .replace('lheading', block.lheading)
+    .replace('blockquote', ' {0,3}>')
+    .replace('|fences', '')
+    .replace('|list', '')
+    .replace('|html', '')
+    .getRegex()
+});
+
+/**
+ * Inline-Level Grammar
+ */
+const inline = {
+  escape: /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,
+  autolink: /^<(scheme:[^\s\x00-\x1f<>]*|email)>/,
+  url: noopTest$1,
+  tag: '^comment'
+    + '|^</[a-zA-Z][\\w:-]*\\s*>' // self-closing tag
+    + '|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>' // open tag
+    + '|^<\\?[\\s\\S]*?\\?>' // processing instruction, e.g. <?php ?>
+    + '|^<![a-zA-Z]+\\s[\\s\\S]*?>' // declaration, e.g. <!DOCTYPE html>
+    + '|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>', // CDATA section
+  link: /^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,
+  reflink: /^!?\[(label)\]\[(?!\s*\])((?:\\[\[\]]?|[^\[\]\\])+)\]/,
+  nolink: /^!?\[(?!\s*\])((?:\[[^\[\]]*\]|\\[\[\]]|[^\[\]])*)\](?:\[\])?/,
+  reflinkSearch: 'reflink|nolink(?!\\()',
+  strong: {
+    start: /^(?:(\*\*(?=[*punctuation]))|\*\*)(?![\s])|__/, // (1) returns if starts w/ punctuation
+    middle: /^\*\*(?:(?:(?!overlapSkip)(?:[^*]|\\\*)|overlapSkip)|\*(?:(?!overlapSkip)(?:[^*]|\\\*)|overlapSkip)*?\*)+?\*\*$|^__(?![\s])((?:(?:(?!overlapSkip)(?:[^_]|\\_)|overlapSkip)|_(?:(?!overlapSkip)(?:[^_]|\\_)|overlapSkip)*?_)+?)__$/,
+    endAst: /[^punctuation\s]\*\*(?!\*)|[punctuation]\*\*(?!\*)(?:(?=[punctuation\s]|$))/, // last char can't be punct, or final * must also be followed by punct (or endline)
+    endUnd: /[^\s]__(?!_)(?:(?=[punctuation\s])|$)/ // last char can't be a space, and final _ must preceed punct or \s (or endline)
+  },
+  em: {
+    start: /^(?:(\*(?=[punctuation]))|\*)(?![*\s])|_/, // (1) returns if starts w/ punctuation
+    middle: /^\*(?:(?:(?!overlapSkip)(?:[^*]|\\\*)|overlapSkip)|\*(?:(?!overlapSkip)(?:[^*]|\\\*)|overlapSkip)*?\*)+?\*$|^_(?![_\s])(?:(?:(?!overlapSkip)(?:[^_]|\\_)|overlapSkip)|_(?:(?!overlapSkip)(?:[^_]|\\_)|overlapSkip)*?_)+?_$/,
+    endAst: /[^punctuation\s]\*(?!\*)|[punctuation]\*(?!\*)(?:(?=[punctuation\s]|$))/, // last char can't be punct, or final * must also be followed by punct (or endline)
+    endUnd: /[^\s]_(?!_)(?:(?=[punctuation\s])|$)/ // last char can't be a space, and final _ must preceed punct or \s (or endline)
+  },
+  code: /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,
+  br: /^( {2,}|\\)\n(?!\s*$)/,
+  del: noopTest$1,
+  text: /^(`+|[^`])(?:[\s\S]*?(?:(?=[\\<!\[`*]|\b_|$)|[^ ](?= {2,}\n))|(?= {2,}\n))/,
+  punctuation: /^([\s*punctuation])/
+};
+
+// list of punctuation marks from common mark spec
+// without * and _ to workaround cases with double emphasis
+inline._punctuation = '!"#$%&\'()+\\-.,/:;<=>?@\\[\\]`^{|}~';
+inline.punctuation = edit$1(inline.punctuation).replace(/punctuation/g, inline._punctuation).getRegex();
+
+// sequences em should skip over [title](link), `code`, <html>
+inline._blockSkip = '\\[[^\\]]*?\\]\\([^\\)]*?\\)|`[^`]*?`|<[^>]*?>';
+inline._overlapSkip = '__[^_]*?__|\\*\\*\\[^\\*\\]*?\\*\\*';
+
+inline.em.start = edit$1(inline.em.start)
+  .replace(/punctuation/g, inline._punctuation)
+  .getRegex();
+
+inline.em.middle = edit$1(inline.em.middle)
+  .replace(/punctuation/g, inline._punctuation)
+  .replace(/overlapSkip/g, inline._overlapSkip)
+  .getRegex();
+
+inline.em.endAst = edit$1(inline.em.endAst, 'g')
+  .replace(/punctuation/g, inline._punctuation)
+  .getRegex();
+
+inline.em.endUnd = edit$1(inline.em.endUnd, 'g')
+  .replace(/punctuation/g, inline._punctuation)
+  .getRegex();
+
+inline.strong.start = edit$1(inline.strong.start)
+  .replace(/punctuation/g, inline._punctuation)
+  .getRegex();
+
+inline.strong.middle = edit$1(inline.strong.middle)
+  .replace(/punctuation/g, inline._punctuation)
+  .replace(/blockSkip/g, inline._blockSkip)
+  .getRegex();
+
+inline.strong.endAst = edit$1(inline.strong.endAst, 'g')
+  .replace(/punctuation/g, inline._punctuation)
+  .getRegex();
+
+inline.strong.endUnd = edit$1(inline.strong.endUnd, 'g')
+  .replace(/punctuation/g, inline._punctuation)
+  .getRegex();
+
+inline.blockSkip = edit$1(inline._blockSkip, 'g')
+  .getRegex();
+
+inline.overlapSkip = edit$1(inline._overlapSkip, 'g')
+  .getRegex();
+
+inline._escapes = /\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g;
+
+inline._scheme = /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/;
+inline._email = /[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/;
+inline.autolink = edit$1(inline.autolink)
+  .replace('scheme', inline._scheme)
+  .replace('email', inline._email)
+  .getRegex();
+
+inline._attribute = /\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/;
+
+inline.tag = edit$1(inline.tag)
+  .replace('comment', block._comment)
+  .replace('attribute', inline._attribute)
+  .getRegex();
+
+inline._label = /(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/;
+inline._href = /<(?:\\[<>]?|[^\s<>\\])*>|[^\s\x00-\x1f]*/;
+inline._title = /"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/;
+
+inline.link = edit$1(inline.link)
+  .replace('label', inline._label)
+  .replace('href', inline._href)
+  .replace('title', inline._title)
+  .getRegex();
+
+inline.reflink = edit$1(inline.reflink)
+  .replace('label', inline._label)
+  .getRegex();
+
+inline.reflinkSearch = edit$1(inline.reflinkSearch, 'g')
+  .replace('reflink', inline.reflink)
+  .replace('nolink', inline.nolink)
+  .getRegex();
+
+/**
+ * Normal Inline Grammar
+ */
+
+inline.normal = merge$1({}, inline);
+
+/**
+ * Pedantic Inline Grammar
+ */
+
+inline.pedantic = merge$1({}, inline.normal, {
+  strong: {
+    start: /^__|\*\*/,
+    middle: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
+    endAst: /\*\*(?!\*)/g,
+    endUnd: /__(?!_)/g
+  },
+  em: {
+    start: /^_|\*/,
+    middle: /^()\*(?=\S)([\s\S]*?\S)\*(?!\*)|^_(?=\S)([\s\S]*?\S)_(?!_)/,
+    endAst: /\*(?!\*)/g,
+    endUnd: /_(?!_)/g
+  },
+  link: edit$1(/^!?\[(label)\]\((.*?)\)/)
+    .replace('label', inline._label)
+    .getRegex(),
+  reflink: edit$1(/^!?\[(label)\]\s*\[([^\]]*)\]/)
+    .replace('label', inline._label)
+    .getRegex()
+});
+
+/**
+ * GFM Inline Grammar
+ */
+
+inline.gfm = merge$1({}, inline.normal, {
+  escape: edit$1(inline.escape).replace('])', '~|])').getRegex(),
+  _extended_email: /[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,
+  url: /^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/,
+  _backpedal: /(?:[^?!.,:;*_~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_~)]+(?!$))+/,
+  del: /^~+(?=\S)([\s\S]*?\S)~+/,
+  text: /^(`+|[^`])(?:[\s\S]*?(?:(?=[\\<!\[`*~]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@))|(?= {2,}\n|[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@))/
+});
+
+inline.gfm.url = edit$1(inline.gfm.url, 'i')
+  .replace('email', inline.gfm._extended_email)
+  .getRegex();
+/**
+ * GFM + Line Breaks Inline Grammar
+ */
+
+inline.breaks = merge$1({}, inline.gfm, {
+  br: edit$1(inline.br).replace('{2,}', '*').getRegex(),
+  text: edit$1(inline.gfm.text)
+    .replace('\\b_', '\\b_| {2,}\\n')
+    .replace(/\{2,\}/g, '*')
+    .getRegex()
+});
+
+var rules = {
+  block,
+  inline
+};
+
+const { defaults: defaults$2 } = defaults;
+const { block: block$1, inline: inline$1 } = rules;
+
+/**
+ * smartypants text replacement
+ */
+function smartypants(text) {
+  return text
+    // em-dashes
+    .replace(/---/g, '\u2014')
+    // en-dashes
+    .replace(/--/g, '\u2013')
+    // opening singles
+    .replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
+    // closing singles & apostrophes
+    .replace(/'/g, '\u2019')
+    // opening doubles
+    .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
+    // closing doubles
+    .replace(/"/g, '\u201d')
+    // ellipses
+    .replace(/\.{3}/g, '\u2026');
+}
+
+/**
+ * mangle email addresses
+ */
+function mangle(text) {
+  let out = '',
+    i,
+    ch;
+
+  const l = text.length;
+  for (i = 0; i < l; i++) {
+    ch = text.charCodeAt(i);
+    if (Math.random() > 0.5) {
+      ch = 'x' + ch.toString(16);
+    }
+    out += '&#' + ch + ';';
+  }
+
+  return out;
+}
+
+/**
+ * Block Lexer
+ */
+var Lexer_1 = class Lexer {
+  constructor(options) {
+    this.tokens = [];
+    this.tokens.links = Object.create(null);
+    this.options = options || defaults$2;
+    this.options.tokenizer = this.options.tokenizer || new Tokenizer_1();
+    this.tokenizer = this.options.tokenizer;
+    this.tokenizer.options = this.options;
+
+    const rules = {
+      block: block$1.normal,
+      inline: inline$1.normal
+    };
+
+    if (this.options.pedantic) {
+      rules.block = block$1.pedantic;
+      rules.inline = inline$1.pedantic;
+    } else if (this.options.gfm) {
+      rules.block = block$1.gfm;
+      if (this.options.breaks) {
+        rules.inline = inline$1.breaks;
+      } else {
+        rules.inline = inline$1.gfm;
+      }
+    }
+    this.tokenizer.rules = rules;
+  }
+
+  /**
+   * Expose Rules
+   */
+  static get rules() {
+    return {
+      block: block$1,
+      inline: inline$1
+    };
+  }
+
+  /**
+   * Static Lex Method
+   */
+  static lex(src, options) {
+    const lexer = new Lexer(options);
+    return lexer.lex(src);
+  }
+
+  /**
+   * Preprocessing
+   */
+  lex(src) {
+    src = src
+      .replace(/\r\n|\r/g, '\n')
+      .replace(/\t/g, '    ');
+
+    this.blockTokens(src, this.tokens, true);
+
+    this.inline(this.tokens);
+
+    return this.tokens;
+  }
+
+  /**
+   * Lexing
+   */
+  blockTokens(src, tokens = [], top = true) {
+    src = src.replace(/^ +$/gm, '');
+    let token, i, l, lastToken;
+
+    while (src) {
+      // newline
+      if (token = this.tokenizer.space(src)) {
+        src = src.substring(token.raw.length);
+        if (token.type) {
+          tokens.push(token);
+        }
+        continue;
+      }
+
+      // code
+      if (token = this.tokenizer.code(src, tokens)) {
+        src = src.substring(token.raw.length);
+        if (token.type) {
+          tokens.push(token);
+        } else {
+          lastToken = tokens[tokens.length - 1];
+          lastToken.raw += '\n' + token.raw;
+          lastToken.text += '\n' + token.text;
+        }
+        continue;
+      }
+
+      // fences
+      if (token = this.tokenizer.fences(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // heading
+      if (token = this.tokenizer.heading(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // table no leading pipe (gfm)
+      if (token = this.tokenizer.nptable(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // hr
+      if (token = this.tokenizer.hr(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // blockquote
+      if (token = this.tokenizer.blockquote(src)) {
+        src = src.substring(token.raw.length);
+        token.tokens = this.blockTokens(token.text, [], top);
+        tokens.push(token);
+        continue;
+      }
+
+      // list
+      if (token = this.tokenizer.list(src)) {
+        src = src.substring(token.raw.length);
+        l = token.items.length;
+        for (i = 0; i < l; i++) {
+          token.items[i].tokens = this.blockTokens(token.items[i].text, [], false);
+        }
+        tokens.push(token);
+        continue;
+      }
+
+      // html
+      if (token = this.tokenizer.html(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // def
+      if (top && (token = this.tokenizer.def(src))) {
+        src = src.substring(token.raw.length);
+        if (!this.tokens.links[token.tag]) {
+          this.tokens.links[token.tag] = {
+            href: token.href,
+            title: token.title
+          };
+        }
+        continue;
+      }
+
+      // table (gfm)
+      if (token = this.tokenizer.table(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // lheading
+      if (token = this.tokenizer.lheading(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // top-level paragraph
+      if (top && (token = this.tokenizer.paragraph(src))) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // text
+      if (token = this.tokenizer.text(src, tokens)) {
+        src = src.substring(token.raw.length);
+        if (token.type) {
+          tokens.push(token);
+        } else {
+          lastToken = tokens[tokens.length - 1];
+          lastToken.raw += '\n' + token.raw;
+          lastToken.text += '\n' + token.text;
+        }
+        continue;
+      }
+
+      if (src) {
+        const errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);
+        if (this.options.silent) {
+          console.error(errMsg);
+          break;
+        } else {
+          throw new Error(errMsg);
+        }
+      }
+    }
+
+    return tokens;
+  }
+
+  inline(tokens) {
+    let i,
+      j,
+      k,
+      l2,
+      row,
+      token;
+
+    const l = tokens.length;
+    for (i = 0; i < l; i++) {
+      token = tokens[i];
+      switch (token.type) {
+        case 'paragraph':
+        case 'text':
+        case 'heading': {
+          token.tokens = [];
+          this.inlineTokens(token.text, token.tokens);
+          break;
+        }
+        case 'table': {
+          token.tokens = {
+            header: [],
+            cells: []
+          };
+
+          // header
+          l2 = token.header.length;
+          for (j = 0; j < l2; j++) {
+            token.tokens.header[j] = [];
+            this.inlineTokens(token.header[j], token.tokens.header[j]);
+          }
+
+          // cells
+          l2 = token.cells.length;
+          for (j = 0; j < l2; j++) {
+            row = token.cells[j];
+            token.tokens.cells[j] = [];
+            for (k = 0; k < row.length; k++) {
+              token.tokens.cells[j][k] = [];
+              this.inlineTokens(row[k], token.tokens.cells[j][k]);
+            }
+          }
+
+          break;
+        }
+        case 'blockquote': {
+          this.inline(token.tokens);
+          break;
+        }
+        case 'list': {
+          l2 = token.items.length;
+          for (j = 0; j < l2; j++) {
+            this.inline(token.items[j].tokens);
+          }
+          break;
+        }
+      }
+    }
+
+    return tokens;
+  }
+
+  /**
+   * Lexing/Compiling
+   */
+  inlineTokens(src, tokens = [], inLink = false, inRawBlock = false, prevChar = '') {
+    let token;
+
+    // String with links masked to avoid interference with em and strong
+    let maskedSrc = src;
+    let match;
+
+    // Mask out reflinks
+    if (this.tokens.links) {
+      const links = Object.keys(this.tokens.links);
+      if (links.length > 0) {
+        while ((match = this.tokenizer.rules.inline.reflinkSearch.exec(maskedSrc)) != null) {
+          if (links.includes(match[0].slice(match[0].lastIndexOf('[') + 1, -1))) {
+            maskedSrc = maskedSrc.slice(0, match.index) + '[' + 'a'.repeat(match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex);
+          }
+        }
+      }
+    }
+    // Mask out other blocks
+    while ((match = this.tokenizer.rules.inline.blockSkip.exec(maskedSrc)) != null) {
+      maskedSrc = maskedSrc.slice(0, match.index) + '[' + 'a'.repeat(match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);
+    }
+
+    while (src) {
+      // escape
+      if (token = this.tokenizer.escape(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // tag
+      if (token = this.tokenizer.tag(src, inLink, inRawBlock)) {
+        src = src.substring(token.raw.length);
+        inLink = token.inLink;
+        inRawBlock = token.inRawBlock;
+        tokens.push(token);
+        continue;
+      }
+
+      // link
+      if (token = this.tokenizer.link(src)) {
+        src = src.substring(token.raw.length);
+        if (token.type === 'link') {
+          token.tokens = this.inlineTokens(token.text, [], true, inRawBlock);
+        }
+        tokens.push(token);
+        continue;
+      }
+
+      // reflink, nolink
+      if (token = this.tokenizer.reflink(src, this.tokens.links)) {
+        src = src.substring(token.raw.length);
+        if (token.type === 'link') {
+          token.tokens = this.inlineTokens(token.text, [], true, inRawBlock);
+        }
+        tokens.push(token);
+        continue;
+      }
+
+      // strong
+      if (token = this.tokenizer.strong(src, maskedSrc, prevChar)) {
+        src = src.substring(token.raw.length);
+        token.tokens = this.inlineTokens(token.text, [], inLink, inRawBlock);
+        tokens.push(token);
+        continue;
+      }
+
+      // em
+      if (token = this.tokenizer.em(src, maskedSrc, prevChar)) {
+        src = src.substring(token.raw.length);
+        token.tokens = this.inlineTokens(token.text, [], inLink, inRawBlock);
+        tokens.push(token);
+        continue;
+      }
+
+      // code
+      if (token = this.tokenizer.codespan(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // br
+      if (token = this.tokenizer.br(src)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // del (gfm)
+      if (token = this.tokenizer.del(src)) {
+        src = src.substring(token.raw.length);
+        token.tokens = this.inlineTokens(token.text, [], inLink, inRawBlock);
+        tokens.push(token);
+        continue;
+      }
+
+      // autolink
+      if (token = this.tokenizer.autolink(src, mangle)) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // url (gfm)
+      if (!inLink && (token = this.tokenizer.url(src, mangle))) {
+        src = src.substring(token.raw.length);
+        tokens.push(token);
+        continue;
+      }
+
+      // text
+      if (token = this.tokenizer.inlineText(src, inRawBlock, smartypants)) {
+        src = src.substring(token.raw.length);
+        prevChar = token.raw.slice(-1);
+        tokens.push(token);
+        continue;
+      }
+
+      if (src) {
+        const errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);
+        if (this.options.silent) {
+          console.error(errMsg);
+          break;
+        } else {
+          throw new Error(errMsg);
+        }
+      }
+    }
+
+    return tokens;
+  }
+};
+
+const { defaults: defaults$3 } = defaults;
+const {
+  cleanUrl: cleanUrl$1,
+  escape: escape$2
+} = helpers;
+
+/**
+ * Renderer
+ */
+var Renderer_1 = class Renderer {
+  constructor(options) {
+    this.options = options || defaults$3;
+  }
+
+  code(code, infostring, escaped) {
+    const lang = (infostring || '').match(/\S*/)[0];
+    if (this.options.highlight) {
+      const out = this.options.highlight(code, lang);
+      if (out != null && out !== code) {
+        escaped = true;
+        code = out;
+      }
+    }
+
+    if (!lang) {
+      return '<pre><code>'
+        + (escaped ? code : escape$2(code, true))
+        + '</code></pre>\n';
+    }
+
+    return '<pre><code class="'
+      + this.options.langPrefix
+      + escape$2(lang, true)
+      + '">'
+      + (escaped ? code : escape$2(code, true))
+      + '</code></pre>\n';
+  }
+
+  blockquote(quote) {
+    return '<blockquote>\n' + quote + '</blockquote>\n';
+  }
+
+  html(html) {
+    return html;
+  }
+
+  heading(text, level, raw, slugger) {
+    if (this.options.headerIds) {
+      return '<h'
+        + level
+        + ' id="'
+        + this.options.headerPrefix
+        + slugger.slug(raw)
+        + '">'
+        + text
+        + '</h'
+        + level
+        + '>\n';
+    }
+    // ignore IDs
+    return '<h' + level + '>' + text + '</h' + level + '>\n';
+  }
+
+  hr() {
+    return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
+  }
+
+  list(body, ordered, start) {
+    const type = ordered ? 'ol' : 'ul',
+      startatt = (ordered && start !== 1) ? (' start="' + start + '"') : '';
+    return '<' + type + startatt + '>\n' + body + '</' + type + '>\n';
+  }
+
+  listitem(text) {
+    return '<li>' + text + '</li>\n';
+  }
+
+  checkbox(checked) {
+    return '<input '
+      + (checked ? 'checked="" ' : '')
+      + 'disabled="" type="checkbox"'
+      + (this.options.xhtml ? ' /' : '')
+      + '> ';
+  }
+
+  paragraph(text) {
+    return '<p>' + text + '</p>\n';
+  }
+
+  table(header, body) {
+    if (body) body = '<tbody>' + body + '</tbody>';
+
+    return '<table>\n'
+      + '<thead>\n'
+      + header
+      + '</thead>\n'
+      + body
+      + '</table>\n';
+  }
+
+  tablerow(content) {
+    return '<tr>\n' + content + '</tr>\n';
+  }
+
+  tablecell(content, flags) {
+    const type = flags.header ? 'th' : 'td';
+    const tag = flags.align
+      ? '<' + type + ' align="' + flags.align + '">'
+      : '<' + type + '>';
+    return tag + content + '</' + type + '>\n';
+  }
+
+  // span level renderer
+  strong(text) {
+    return '<strong>' + text + '</strong>';
+  }
+
+  em(text) {
+    return '<em>' + text + '</em>';
+  }
+
+  codespan(text) {
+    return '<code>' + text + '</code>';
+  }
+
+  br() {
+    return this.options.xhtml ? '<br/>' : '<br>';
+  }
+
+  del(text) {
+    return '<del>' + text + '</del>';
+  }
+
+  link(href, title, text) {
+    href = cleanUrl$1(this.options.sanitize, this.options.baseUrl, href);
+    if (href === null) {
+      return text;
+    }
+    let out = '<a href="' + escape$2(href) + '"';
+    if (title) {
+      out += ' title="' + title + '"';
+    }
+    out += '>' + text + '</a>';
+    return out;
+  }
+
+  image(href, title, text) {
+    href = cleanUrl$1(this.options.sanitize, this.options.baseUrl, href);
+    if (href === null) {
+      return text;
+    }
+
+    let out = '<img src="' + href + '" alt="' + text + '"';
+    if (title) {
+      out += ' title="' + title + '"';
+    }
+    out += this.options.xhtml ? '/>' : '>';
+    return out;
+  }
+
+  text(text) {
+    return text;
+  }
+};
+
+/**
+ * TextRenderer
+ * returns only the textual part of the token
+ */
+var TextRenderer_1 = class TextRenderer {
+  // no need for block level renderers
+  strong(text) {
+    return text;
+  }
+
+  em(text) {
+    return text;
+  }
+
+  codespan(text) {
+    return text;
+  }
+
+  del(text) {
+    return text;
+  }
+
+  html(text) {
+    return text;
+  }
+
+  text(text) {
+    return text;
+  }
+
+  link(href, title, text) {
+    return '' + text;
+  }
+
+  image(href, title, text) {
+    return '' + text;
+  }
+
+  br() {
+    return '';
+  }
+};
+
+/**
+ * Slugger generates header id
+ */
+var Slugger_1 = class Slugger {
+  constructor() {
+    this.seen = {};
+  }
+
+  serialize(value) {
+    return value
+      .toLowerCase()
+      .trim()
+      // remove html tags
+      .replace(/<[!\/a-z].*?>/ig, '')
+      // remove unwanted chars
+      .replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g, '')
+      .replace(/\s/g, '-');
+  }
+
+  /**
+   * Finds the next safe (unique) slug to use
+   */
+  getNextSafeSlug(originalSlug, isDryRun) {
+    let slug = originalSlug;
+    let occurenceAccumulator = 0;
+    if (this.seen.hasOwnProperty(slug)) {
+      occurenceAccumulator = this.seen[originalSlug];
+      do {
+        occurenceAccumulator++;
+        slug = originalSlug + '-' + occurenceAccumulator;
+      } while (this.seen.hasOwnProperty(slug));
+    }
+    if (!isDryRun) {
+      this.seen[originalSlug] = occurenceAccumulator;
+      this.seen[slug] = 0;
+    }
+    return slug;
+  }
+
+  /**
+   * Convert string to unique id
+   * @param {object} options
+   * @param {boolean} options.dryrun Generates the next unique slug without updating the internal accumulator.
+   */
+  slug(value, options = {}) {
+    const slug = this.serialize(value);
+    return this.getNextSafeSlug(slug, options.dryrun);
+  }
+};
+
+const { defaults: defaults$4 } = defaults;
+const {
+  unescape: unescape$1
+} = helpers;
+
+/**
+ * Parsing & Compiling
+ */
+var Parser_1 = class Parser {
+  constructor(options) {
+    this.options = options || defaults$4;
+    this.options.renderer = this.options.renderer || new Renderer_1();
+    this.renderer = this.options.renderer;
+    this.renderer.options = this.options;
+    this.textRenderer = new TextRenderer_1();
+    this.slugger = new Slugger_1();
+  }
+
+  /**
+   * Static Parse Method
+   */
+  static parse(tokens, options) {
+    const parser = new Parser(options);
+    return parser.parse(tokens);
+  }
+
+  /**
+   * Parse Loop
+   */
+  parse(tokens, top = true) {
+    let out = '',
+      i,
+      j,
+      k,
+      l2,
+      l3,
+      row,
+      cell,
+      header,
+      body,
+      token,
+      ordered,
+      start,
+      loose,
+      itemBody,
+      item,
+      checked,
+      task,
+      checkbox;
+
+    const l = tokens.length;
+    for (i = 0; i < l; i++) {
+      token = tokens[i];
+      switch (token.type) {
+        case 'space': {
+          continue;
+        }
+        case 'hr': {
+          out += this.renderer.hr();
+          continue;
+        }
+        case 'heading': {
+          out += this.renderer.heading(
+            this.parseInline(token.tokens),
+            token.depth,
+            unescape$1(this.parseInline(token.tokens, this.textRenderer)),
+            this.slugger);
+          continue;
+        }
+        case 'code': {
+          out += this.renderer.code(token.text,
+            token.lang,
+            token.escaped);
+          continue;
+        }
+        case 'table': {
+          header = '';
+
+          // header
+          cell = '';
+          l2 = token.header.length;
+          for (j = 0; j < l2; j++) {
+            cell += this.renderer.tablecell(
+              this.parseInline(token.tokens.header[j]),
+              { header: true, align: token.align[j] }
+            );
+          }
+          header += this.renderer.tablerow(cell);
+
+          body = '';
+          l2 = token.cells.length;
+          for (j = 0; j < l2; j++) {
+            row = token.tokens.cells[j];
+
+            cell = '';
+            l3 = row.length;
+            for (k = 0; k < l3; k++) {
+              cell += this.renderer.tablecell(
+                this.parseInline(row[k]),
+                { header: false, align: token.align[k] }
+              );
+            }
+
+            body += this.renderer.tablerow(cell);
+          }
+          out += this.renderer.table(header, body);
+          continue;
+        }
+        case 'blockquote': {
+          body = this.parse(token.tokens);
+          out += this.renderer.blockquote(body);
+          continue;
+        }
+        case 'list': {
+          ordered = token.ordered;
+          start = token.start;
+          loose = token.loose;
+          l2 = token.items.length;
+
+          body = '';
+          for (j = 0; j < l2; j++) {
+            item = token.items[j];
+            checked = item.checked;
+            task = item.task;
+
+            itemBody = '';
+            if (item.task) {
+              checkbox = this.renderer.checkbox(checked);
+              if (loose) {
+                if (item.tokens.length > 0 && item.tokens[0].type === 'text') {
+                  item.tokens[0].text = checkbox + ' ' + item.tokens[0].text;
+                  if (item.tokens[0].tokens && item.tokens[0].tokens.length > 0 && item.tokens[0].tokens[0].type === 'text') {
+                    item.tokens[0].tokens[0].text = checkbox + ' ' + item.tokens[0].tokens[0].text;
+                  }
+                } else {
+                  item.tokens.unshift({
+                    type: 'text',
+                    text: checkbox
+                  });
+                }
+              } else {
+                itemBody += checkbox;
+              }
+            }
+
+            itemBody += this.parse(item.tokens, loose);
+            body += this.renderer.listitem(itemBody, task, checked);
+          }
+
+          out += this.renderer.list(body, ordered, start);
+          continue;
+        }
+        case 'html': {
+          // TODO parse inline content if parameter markdown=1
+          out += this.renderer.html(token.text);
+          continue;
+        }
+        case 'paragraph': {
+          out += this.renderer.paragraph(this.parseInline(token.tokens));
+          continue;
+        }
+        case 'text': {
+          body = token.tokens ? this.parseInline(token.tokens) : token.text;
+          while (i + 1 < l && tokens[i + 1].type === 'text') {
+            token = tokens[++i];
+            body += '\n' + (token.tokens ? this.parseInline(token.tokens) : token.text);
+          }
+          out += top ? this.renderer.paragraph(body) : body;
+          continue;
+        }
+        default: {
+          const errMsg = 'Token with "' + token.type + '" type was not found.';
+          if (this.options.silent) {
+            console.error(errMsg);
+            return;
+          } else {
+            throw new Error(errMsg);
+          }
+        }
+      }
+    }
+
+    return out;
+  }
+
+  /**
+   * Parse Inline Tokens
+   */
+  parseInline(tokens, renderer) {
+    renderer = renderer || this.renderer;
+    let out = '',
+      i,
+      token;
+
+    const l = tokens.length;
+    for (i = 0; i < l; i++) {
+      token = tokens[i];
+      switch (token.type) {
+        case 'escape': {
+          out += renderer.text(token.text);
+          break;
+        }
+        case 'html': {
+          out += renderer.html(token.text);
+          break;
+        }
+        case 'link': {
+          out += renderer.link(token.href, token.title, this.parseInline(token.tokens, renderer));
+          break;
+        }
+        case 'image': {
+          out += renderer.image(token.href, token.title, token.text);
+          break;
+        }
+        case 'strong': {
+          out += renderer.strong(this.parseInline(token.tokens, renderer));
+          break;
+        }
+        case 'em': {
+          out += renderer.em(this.parseInline(token.tokens, renderer));
+          break;
+        }
+        case 'codespan': {
+          out += renderer.codespan(token.text);
+          break;
+        }
+        case 'br': {
+          out += renderer.br();
+          break;
+        }
+        case 'del': {
+          out += renderer.del(this.parseInline(token.tokens, renderer));
+          break;
+        }
+        case 'text': {
+          out += renderer.text(token.text);
+          break;
+        }
+        default: {
+          const errMsg = 'Token with "' + token.type + '" type was not found.';
+          if (this.options.silent) {
+            console.error(errMsg);
+            return;
+          } else {
+            throw new Error(errMsg);
+          }
+        }
+      }
+    }
+    return out;
+  }
+};
+
+const {
+  merge: merge$2,
+  checkSanitizeDeprecation: checkSanitizeDeprecation$1,
+  escape: escape$3
+} = helpers;
+const {
+  getDefaults,
+  changeDefaults,
+  defaults: defaults$5
+} = defaults;
+
+/**
+ * Marked
+ */
+function marked(src, opt, callback) {
+  // throw error in case of non string input
+  if (typeof src === 'undefined' || src === null) {
+    throw new Error('marked(): input parameter is undefined or null');
+  }
+  if (typeof src !== 'string') {
+    throw new Error('marked(): input parameter is of type '
+      + Object.prototype.toString.call(src) + ', string expected');
+  }
+
+  if (typeof opt === 'function') {
+    callback = opt;
+    opt = null;
+  }
+
+  opt = merge$2({}, marked.defaults, opt || {});
+  checkSanitizeDeprecation$1(opt);
+
+  if (callback) {
+    const highlight = opt.highlight;
+    let tokens;
+
+    try {
+      tokens = Lexer_1.lex(src, opt);
+    } catch (e) {
+      return callback(e);
+    }
+
+    const done = function(err) {
+      let out;
+
+      if (!err) {
+        try {
+          out = Parser_1.parse(tokens, opt);
+        } catch (e) {
+          err = e;
+        }
+      }
+
+      opt.highlight = highlight;
+
+      return err
+        ? callback(err)
+        : callback(null, out);
+    };
+
+    if (!highlight || highlight.length < 3) {
+      return done();
+    }
+
+    delete opt.highlight;
+
+    if (!tokens.length) return done();
+
+    let pending = 0;
+    marked.walkTokens(tokens, function(token) {
+      if (token.type === 'code') {
+        pending++;
+        setTimeout(() => {
+          highlight(token.text, token.lang, function(err, code) {
+            if (err) {
+              return done(err);
+            }
+            if (code != null && code !== token.text) {
+              token.text = code;
+              token.escaped = true;
+            }
+
+            pending--;
+            if (pending === 0) {
+              done();
+            }
+          });
+        }, 0);
+      }
+    });
+
+    if (pending === 0) {
+      done();
+    }
+
+    return;
+  }
+
+  try {
+    const tokens = Lexer_1.lex(src, opt);
+    if (opt.walkTokens) {
+      marked.walkTokens(tokens, opt.walkTokens);
+    }
+    return Parser_1.parse(tokens, opt);
+  } catch (e) {
+    e.message += '\nPlease report this to https://github.com/markedjs/marked.';
+    if (opt.silent) {
+      return '<p>An error occurred:</p><pre>'
+        + escape$3(e.message + '', true)
+        + '</pre>';
+    }
+    throw e;
+  }
+}
+
+/**
+ * Options
+ */
+
+marked.options =
+marked.setOptions = function(opt) {
+  merge$2(marked.defaults, opt);
+  changeDefaults(marked.defaults);
+  return marked;
+};
+
+marked.getDefaults = getDefaults;
+
+marked.defaults = defaults$5;
+
+/**
+ * Use Extension
+ */
+
+marked.use = function(extension) {
+  const opts = merge$2({}, extension);
+  if (extension.renderer) {
+    const renderer = marked.defaults.renderer || new Renderer_1();
+    for (const prop in extension.renderer) {
+      const prevRenderer = renderer[prop];
+      renderer[prop] = (...args) => {
+        let ret = extension.renderer[prop].apply(renderer, args);
+        if (ret === false) {
+          ret = prevRenderer.apply(renderer, args);
+        }
+        return ret;
+      };
+    }
+    opts.renderer = renderer;
+  }
+  if (extension.tokenizer) {
+    const tokenizer = marked.defaults.tokenizer || new Tokenizer_1();
+    for (const prop in extension.tokenizer) {
+      const prevTokenizer = tokenizer[prop];
+      tokenizer[prop] = (...args) => {
+        let ret = extension.tokenizer[prop].apply(tokenizer, args);
+        if (ret === false) {
+          ret = prevTokenizer.apply(tokenizer, args);
+        }
+        return ret;
+      };
+    }
+    opts.tokenizer = tokenizer;
+  }
+  if (extension.walkTokens) {
+    const walkTokens = marked.defaults.walkTokens;
+    opts.walkTokens = (token) => {
+      extension.walkTokens(token);
+      if (walkTokens) {
+        walkTokens(token);
+      }
+    };
+  }
+  marked.setOptions(opts);
+};
+
+/**
+ * Run callback for every token
+ */
+
+marked.walkTokens = function(tokens, callback) {
+  for (const token of tokens) {
+    callback(token);
+    switch (token.type) {
+      case 'table': {
+        for (const cell of token.tokens.header) {
+          marked.walkTokens(cell, callback);
+        }
+        for (const row of token.tokens.cells) {
+          for (const cell of row) {
+            marked.walkTokens(cell, callback);
+          }
+        }
+        break;
+      }
+      case 'list': {
+        marked.walkTokens(token.items, callback);
+        break;
+      }
+      default: {
+        if (token.tokens) {
+          marked.walkTokens(token.tokens, callback);
+        }
+      }
+    }
+  }
+};
+
+/**
+ * Expose
+ */
+
+marked.Parser = Parser_1;
+marked.parser = Parser_1.parse;
+
+marked.Renderer = Renderer_1;
+marked.TextRenderer = TextRenderer_1;
+
+marked.Lexer = Lexer_1;
+marked.lexer = Lexer_1.lex;
+
+marked.Tokenizer = Tokenizer_1;
+
+marked.Slugger = Slugger_1;
+
+marked.parse = marked;
+
+var marked_1 = marked;
+
+export default marked_1;

documents/users_guide/en/comp_split.md

@@ -0,0 +1,2 @@
+# 强力复合词拆分
+这是基于语料库的复合词自动拆分程序。点击数字选择更多选项。