Removed source code documentation. Can be generated at any point.

1 files changed, 0 insertions, 1526 deletions

diff --git a/docu/nd/javascript/prettify.js b/docu/nd/javascript/prettify.js
deleted file mode 100644
index fda4bf1..0000000
--- a/docu/nd/javascript/prettify.js
+++ /dev/null
@@ -1,1526 +0,0 @@
-
-// This code comes from the December 2009 release of Google Prettify, which is Copyright © 2006 Google Inc.
-// Minor modifications are marked with "ND Change" comments.
-// As part of Natural Docs, this code is licensed under version 3 of the GNU Affero General Public License (AGPL.)
-// However, it may also be obtained separately under version 2.0 of the Apache License.
-// Refer to License.txt for the complete details
-
-
-// Main code
-// ____________________________________________________________________________
-
-// Copyright (C) 2006 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-
-/**
- * @fileoverview
- * some functions for browser-side pretty printing of code contained in html.
- * <p>
- *
- * For a fairly comprehensive set of languages see the
- * <a href="http://google-code-prettify.googlecode.com/svn/trunk/README.html#langs">README</a>
- * file that came with this source.  At a minimum, the lexer should work on a
- * number of languages including C and friends, Java, Python, Bash, SQL, HTML,
- * XML, CSS, Javascript, and Makefiles.  It works passably on Ruby, PHP and Awk
- * and a subset of Perl, but, because of commenting conventions, doesn't work on
- * Smalltalk, Lisp-like, or CAML-like languages without an explicit lang class.
- * <p>
- * Usage: <ol>
- * <li> include this source file in an html page via
- *   {@code <script type="text/javascript" src="/path/to/prettify.js"></script>}
- * <li> define style rules.  See the example page for examples.
- * <li> mark the {@code <pre>} and {@code <code>} tags in your source with
- *    {@code class=prettyprint.}
- *    You can also use the (html deprecated) {@code <xmp>} tag, but the pretty
- *    printer needs to do more substantial DOM manipulations to support that, so
- *    some css styles may not be preserved.
- * </ol>
- * That's it.  I wanted to keep the API as simple as possible, so there's no
- * need to specify which language the code is in, but if you wish, you can add
- * another class to the {@code <pre>} or {@code <code>} element to specify the
- * language, as in {@code <pre class="prettyprint lang-java">}.  Any class that
- * starts with "lang-" followed by a file extension, specifies the file type.
- * See the "lang-*.js" files in this directory for code that implements
- * per-language file handlers.
- * <p>
- * Change log:<br>
- * cbeust, 2006/08/22
- * <blockquote>
- *   Java annotations (start with "@") are now captured as literals ("lit")
- * </blockquote>
- * @requires console
- * @overrides window
- */
-
-// JSLint declarations
-/*global console, document, navigator, setTimeout, window */
-
-/**
- * Split {@code prettyPrint} into multiple timeouts so as not to interfere with
- * UI events.
- * If set to {@code false}, {@code prettyPrint()} is synchronous.
- */
-window['PR_SHOULD_USE_CONTINUATION'] = true;
-
-/** the number of characters between tab columns */
-window['PR_TAB_WIDTH'] = 8;
-
-/** Walks the DOM returning a properly escaped version of innerHTML.
-  * @param {Node} node
-  * @param {Array.<string>} out output buffer that receives chunks of HTML.
-  */
-window['PR_normalizedHtml']
-
-/** Contains functions for creating and registering new language handlers.
-  * @type {Object}
-  */
-  = window['PR']
-
-/** Pretty print a chunk of code.
-  *
-  * @param {string} sourceCodeHtml code as html
-  * @return {string} code as html, but prettier
-  */
-  = window['prettyPrintOne']
-/** Find all the {@code <pre>} and {@code <code>} tags in the DOM with
-  * {@code class=prettyprint} and prettify them.
-  * @param {Function?} opt_whenDone if specified, called when the last entry
-  *     has been finished.
-  */
-  = window['prettyPrint'] = void 0;
-
-/** browser detection. @extern @returns false if not IE, otherwise the major version. */
-window['_pr_isIE6'] = function () {
-  var ieVersion = navigator && navigator.userAgent &&
-      navigator.userAgent.match(/\bMSIE ([678])\./);
-  ieVersion = ieVersion ? +ieVersion[1] : false;
-  window['_pr_isIE6'] = function () { return ieVersion; };
-  return ieVersion;
-};
-
-
-(function () {
-  // Keyword lists for various languages.
-  var FLOW_CONTROL_KEYWORDS =
-      "break continue do else for if return while ";
-  var C_KEYWORDS = FLOW_CONTROL_KEYWORDS + "auto case char const default " +
-      "double enum extern float goto int long register short signed sizeof " +
-      "static struct switch typedef union unsigned void volatile ";
-  var COMMON_KEYWORDS = C_KEYWORDS + "catch class delete false import " +
-      "new operator private protected public this throw true try typeof ";
-  var CPP_KEYWORDS = COMMON_KEYWORDS + "alignof align_union asm axiom bool " +
-      "concept concept_map const_cast constexpr decltype " +
-      "dynamic_cast explicit export friend inline late_check " +
-      "mutable namespace nullptr reinterpret_cast static_assert static_cast " +
-      "template typeid typename using virtual wchar_t where ";
-  var JAVA_KEYWORDS = COMMON_KEYWORDS +
-      "abstract boolean byte extends final finally implements import " +
-      "instanceof null native package strictfp super synchronized throws " +
-      "transient ";
-  var CSHARP_KEYWORDS = JAVA_KEYWORDS +
-      "as base by checked decimal delegate descending event " +
-      "fixed foreach from group implicit in interface internal into is lock " +
-      "object out override orderby params partial readonly ref sbyte sealed " +
-      "stackalloc string select uint ulong unchecked unsafe ushort var ";
-  var JSCRIPT_KEYWORDS = COMMON_KEYWORDS +
-      "debugger eval export function get null set undefined var with " +
-      "Infinity NaN ";
-  var PERL_KEYWORDS = "caller delete die do dump elsif eval exit foreach for " +
-      "goto if import last local my next no our print package redo require " +
-      "sub undef unless until use wantarray while BEGIN END ";
-  var PYTHON_KEYWORDS = FLOW_CONTROL_KEYWORDS + "and as assert class def del " +
-      "elif except exec finally from global import in is lambda " +
-      "nonlocal not or pass print raise try with yield " +
-      "False True None ";
-  var RUBY_KEYWORDS = FLOW_CONTROL_KEYWORDS + "alias and begin case class def" +
-      " defined elsif end ensure false in module next nil not or redo rescue " +
-      "retry self super then true undef unless until when yield BEGIN END ";
-  var SH_KEYWORDS = FLOW_CONTROL_KEYWORDS + "case done elif esac eval fi " +
-      "function in local set then until ";
-  var ALL_KEYWORDS = (
-      CPP_KEYWORDS + CSHARP_KEYWORDS + JSCRIPT_KEYWORDS + PERL_KEYWORDS +
-      PYTHON_KEYWORDS + RUBY_KEYWORDS + SH_KEYWORDS);
-
-  // token style names.  correspond to css classes
-  /** token style for a string literal */
-  var PR_STRING = 'str';
-  /** token style for a keyword */
-  var PR_KEYWORD = 'kwd';
-  /** token style for a comment */
-  var PR_COMMENT = 'com';
-  /** token style for a type */
-  var PR_TYPE = 'typ';
-  /** token style for a literal value.  e.g. 1, null, true. */
-  var PR_LITERAL = 'lit';
-  /** token style for a punctuation string. */
-  var PR_PUNCTUATION = 'pun';
-  /** token style for a punctuation string. */
-  var PR_PLAIN = 'pln';
-
-  /** token style for an sgml tag. */
-  var PR_TAG = 'tag';
-  /** token style for a markup declaration such as a DOCTYPE. */
-  var PR_DECLARATION = 'dec';
-  /** token style for embedded source. */
-  var PR_SOURCE = 'src';
-  /** token style for an sgml attribute name. */
-  var PR_ATTRIB_NAME = 'atn';
-  /** token style for an sgml attribute value. */
-  var PR_ATTRIB_VALUE = 'atv';
-
-  /**
-   * A class that indicates a section of markup that is not code, e.g. to allow
-   * embedding of line numbers within code listings.
-   */
-  var PR_NOCODE = 'nocode';
-
-  /** A set of tokens that can precede a regular expression literal in
-    * javascript.
-    * http://www.mozilla.org/js/language/js20/rationale/syntax.html has the full
-    * list, but I've removed ones that might be problematic when seen in
-    * languages that don't support regular expression literals.
-    *
-    * <p>Specifically, I've removed any keywords that can't precede a regexp
-    * literal in a syntactically legal javascript program, and I've removed the
-    * "in" keyword since it's not a keyword in many languages, and might be used
-    * as a count of inches.
-    *
-    * <p>The link a above does not accurately describe EcmaScript rules since
-    * it fails to distinguish between (a=++/b/i) and (a++/b/i) but it works
-    * very well in practice.
-    *
-    * @private
-    */
-  var REGEXP_PRECEDER_PATTERN = function () {
-      var preceders = [
-          "!", "!=", "!==", "#", "%", "%=", "&", "&&", "&&=",
-          "&=", "(", "*", "*=", /* "+", */ "+=", ",", /* "-", */ "-=",
-          "->", /*".", "..", "...", handled below */ "/", "/=", ":", "::", ";",
-          "<", "<<", "<<=", "<=", "=", "==", "===", ">",
-          ">=", ">>", ">>=", ">>>", ">>>=", "?", "@", "[",
-          "^", "^=", "^^", "^^=", "{", "|", "|=", "||",
-          "||=", "~" /* handles =~ and !~ */,
-          "break", "case", "continue", "delete",
-          "do", "else", "finally", "instanceof",
-          "return", "throw", "try", "typeof"
-          ];
-      var pattern = '(?:^^|[+-]';
-      for (var i = 0; i < preceders.length; ++i) {
-        pattern += '|' + preceders[i].replace(/([^=<>:&a-z])/g, '\\$1');
-      }
-      pattern += ')\\s*';  // matches at end, and matches empty string
-      return pattern;
-      // CAVEAT: this does not properly handle the case where a regular
-      // expression immediately follows another since a regular expression may
-      // have flags for case-sensitivity and the like.  Having regexp tokens
-      // adjacent is not valid in any language I'm aware of, so I'm punting.
-      // TODO: maybe style special characters inside a regexp as punctuation.
-    }();
-
-  // Define regexps here so that the interpreter doesn't have to create an
-  // object each time the function containing them is called.
-  // The language spec requires a new object created even if you don't access
-  // the $1 members.
-  var pr_amp = /&/g;
-  var pr_lt = /</g;
-  var pr_gt = />/g;
-  var pr_quot = /\"/g;
-  /** like textToHtml but escapes double quotes to be attribute safe. */
-  function attribToHtml(str) {
-    return str.replace(pr_amp, '&amp;')
-        .replace(pr_lt, '&lt;')
-        .replace(pr_gt, '&gt;')
-        .replace(pr_quot, '&quot;');
-  }
-
-  /** escapest html special characters to html. */
-  function textToHtml(str) {
-    return str.replace(pr_amp, '&amp;')
-        .replace(pr_lt, '&lt;')
-        .replace(pr_gt, '&gt;');
-  }
-
-
-  var pr_ltEnt = /&lt;/g;
-  var pr_gtEnt = /&gt;/g;
-  var pr_aposEnt = /&apos;/g;
-  var pr_quotEnt = /&quot;/g;
-  var pr_ampEnt = /&amp;/g;
-  var pr_nbspEnt = /&nbsp;/g;
-  /** unescapes html to plain text. */
-  function htmlToText(html) {
-    var pos = html.indexOf('&');
-    if (pos < 0) { return html; }
-    // Handle numeric entities specially.  We can't use functional substitution
-    // since that doesn't work in older versions of Safari.
-    // These should be rare since most browsers convert them to normal chars.
-    for (--pos; (pos = html.indexOf('&#', pos + 1)) >= 0;) {
-      var end = html.indexOf(';', pos);
-      if (end >= 0) {
-        var num = html.substring(pos + 3, end);
-        var radix = 10;
-        if (num && num.charAt(0) === 'x') {
-          num = num.substring(1);
-          radix = 16;
-        }
-        var codePoint = parseInt(num, radix);
-        if (!isNaN(codePoint)) {
-          html = (html.substring(0, pos) + String.fromCharCode(codePoint) +
-                  html.substring(end + 1));
-        }
-      }
-    }
-
-    return html.replace(pr_ltEnt, '<')
-        .replace(pr_gtEnt, '>')
-        .replace(pr_aposEnt, "'")
-        .replace(pr_quotEnt, '"')
-        .replace(pr_nbspEnt, ' ')
-        .replace(pr_ampEnt, '&');
-  }
-
-  /** is the given node's innerHTML normally unescaped? */
-  function isRawContent(node) {
-    return 'XMP' === node.tagName;
-  }
-
-  var newlineRe = /[\r\n]/g;
-  /**
-   * Are newlines and adjacent spaces significant in the given node's innerHTML?
-   */
-  function isPreformatted(node, content) {
-    // PRE means preformatted, and is a very common case, so don't create
-    // unnecessary computed style objects.
-    if ('PRE' === node.tagName) { return true; }
-    if (!newlineRe.test(content)) { return true; }  // Don't care
-    var whitespace = '';
-    // For disconnected nodes, IE has no currentStyle.
-    if (node.currentStyle) {
-      whitespace = node.currentStyle.whiteSpace;
-    } else if (window.getComputedStyle) {
-      // Firefox makes a best guess if node is disconnected whereas Safari
-      // returns the empty string.
-      whitespace = window.getComputedStyle(node, null).whiteSpace;
-    }
-    return !whitespace || whitespace === 'pre';
-  }
-
-  function normalizedHtml(node, out) {
-    switch (node.nodeType) {
-      case 1:  // an element
-        var name = node.tagName.toLowerCase();
-        out.push('<', name);
-        for (var i = 0; i < node.attributes.length; ++i) {
-          var attr = node.attributes[i];
-          if (!attr.specified) { continue; }
-          out.push(' ');
-          normalizedHtml(attr, out);
-        }
-        out.push('>');
-        for (var child = node.firstChild; child; child = child.nextSibling) {
-          normalizedHtml(child, out);
-        }
-        if (node.firstChild || !/^(?:br|link|img)$/.test(name)) {
-          out.push('<\/', name, '>');
-        }
-        break;
-      case 2: // an attribute
-        out.push(node.name.toLowerCase(), '="', attribToHtml(node.value), '"');
-        break;
-      case 3: case 4: // text
-        out.push(textToHtml(node.nodeValue));
-        break;
-    }
-  }
-
-  /**
-   * Given a group of {@link RegExp}s, returns a {@code RegExp} that globally
-   * matches the union o the sets o strings matched d by the input RegExp.
-   * Since it matches globally, if the input strings have a start-of-input
-   * anchor (/^.../), it is ignored for the purposes of unioning.
-   * @param {Array.<RegExp>} regexs non multiline, non-global regexs.
-   * @return {RegExp} a global regex.
-   */
-  function combinePrefixPatterns(regexs) {
-    var capturedGroupIndex = 0;
-
-    var needToFoldCase = false;
-    var ignoreCase = false;
-    for (var i = 0, n = regexs.length; i < n; ++i) {
-      var regex = regexs[i];
-      if (regex.ignoreCase) {
-        ignoreCase = true;
-      } else if (/[a-z]/i.test(regex.source.replace(
-                     /\\u[0-9a-f]{4}|\\x[0-9a-f]{2}|\\[^ux]/gi, ''))) {
-        needToFoldCase = true;
-        ignoreCase = false;
-        break;
-      }
-    }
-
-    function decodeEscape(charsetPart) {
-      if (charsetPart.charAt(0) !== '\\') { return charsetPart.charCodeAt(0); }
-      switch (charsetPart.charAt(1)) {
-        case 'b': return 8;
-        case 't': return 9;
-        case 'n': return 0xa;
-        case 'v': return 0xb;
-        case 'f': return 0xc;
-        case 'r': return 0xd;
-        case 'u': case 'x':
-          return parseInt(charsetPart.substring(2), 16)
-              || charsetPart.charCodeAt(1);
-        case '0': case '1': case '2': case '3': case '4':
-        case '5': case '6': case '7':
-          return parseInt(charsetPart.substring(1), 8);
-        default: return charsetPart.charCodeAt(1);
-      }
-    }
-
-    function encodeEscape(charCode) {
-      if (charCode < 0x20) {
-        return (charCode < 0x10 ? '\\x0' : '\\x') + charCode.toString(16);
-      }
-      var ch = String.fromCharCode(charCode);
-      if (ch === '\\' || ch === '-' || ch === '[' || ch === ']') {
-        ch = '\\' + ch;
-      }
-      return ch;
-    }
-
-    function caseFoldCharset(charSet) {
-      var charsetParts = charSet.substring(1, charSet.length - 1).match(
-          new RegExp(
-              '\\\\u[0-9A-Fa-f]{4}'
-              + '|\\\\x[0-9A-Fa-f]{2}'
-              + '|\\\\[0-3][0-7]{0,2}'
-              + '|\\\\[0-7]{1,2}'
-              + '|\\\\[\\s\\S]'
-              + '|-'
-              + '|[^-\\\\]',
-              'g'));
-      var groups = [];
-      var ranges = [];
-      var inverse = charsetParts[0] === '^';
-      for (var i = inverse ? 1 : 0, n = charsetParts.length; i < n; ++i) {
-        var p = charsetParts[i];
-        switch (p) {
-          case '\\B': case '\\b':
-          case '\\D': case '\\d':
-          case '\\S': case '\\s':
-          case '\\W': case '\\w':
-            groups.push(p);
-            continue;
-        }
-        var start = decodeEscape(p);
-        var end;
-        if (i + 2 < n && '-' === charsetParts[i + 1]) {
-          end = decodeEscape(charsetParts[i + 2]);
-          i += 2;
-        } else {
-          end = start;
-        }
-        ranges.push([start, end]);
-        // If the range might intersect letters, then expand it.
-        if (!(end < 65 || start > 122)) {
-          if (!(end < 65 || start > 90)) {
-            ranges.push([Math.max(65, start) | 32, Math.min(end, 90) | 32]);
-          }
-          if (!(end < 97 || start > 122)) {
-            ranges.push([Math.max(97, start) & ~32, Math.min(end, 122) & ~32]);
-          }
-        }
-      }
-
-      // [[1, 10], [3, 4], [8, 12], [14, 14], [16, 16], [17, 17]]
-      // -> [[1, 12], [14, 14], [16, 17]]
-      ranges.sort(function (a, b) { return (a[0] - b[0]) || (b[1]  - a[1]); });
-      var consolidatedRanges = [];
-      var lastRange = [NaN, NaN];
-      for (var i = 0; i < ranges.length; ++i) {
-        var range = ranges[i];
-        if (range[0] <= lastRange[1] + 1) {
-          lastRange[1] = Math.max(lastRange[1], range[1]);
-        } else {
-          consolidatedRanges.push(lastRange = range);
-        }
-      }
-
-      var out = ['['];
-      if (inverse) { out.push('^'); }
-      out.push.apply(out, groups);
-      for (var i = 0; i < consolidatedRanges.length; ++i) {
-        var range = consolidatedRanges[i];
-        out.push(encodeEscape(range[0]));
-        if (range[1] > range[0]) {
-          if (range[1] + 1 > range[0]) { out.push('-'); }
-          out.push(encodeEscape(range[1]));
-        }
-      }
-      out.push(']');
-      return out.join('');
-    }
-
-    function allowAnywhereFoldCaseAndRenumberGroups(regex) {
-      // Split into character sets, escape sequences, punctuation strings
-      // like ('(', '(?:', ')', '^'), and runs of characters that do not
-      // include any of the above.
-      var parts = regex.source.match(
-          new RegExp(
-              '(?:'
-              + '\\[(?:[^\\x5C\\x5D]|\\\\[\\s\\S])*\\]'  // a character set
-              + '|\\\\u[A-Fa-f0-9]{4}'  // a unicode escape
-              + '|\\\\x[A-Fa-f0-9]{2}'  // a hex escape
-              + '|\\\\[0-9]+'  // a back-reference or octal escape
-              + '|\\\\[^ux0-9]'  // other escape sequence
-              + '|\\(\\?[:!=]'  // start of a non-capturing group
-              + '|[\\(\\)\\^]'  // start/emd of a group, or line start
-              + '|[^\\x5B\\x5C\\(\\)\\^]+'  // run of other characters
-              + ')',
-              'g'));
-      var n = parts.length;
-
-      // Maps captured group numbers to the number they will occupy in
-      // the output or to -1 if that has not been determined, or to
-      // undefined if they need not be capturing in the output.
-      var capturedGroups = [];
-
-      // Walk over and identify back references to build the capturedGroups
-      // mapping.
-      for (var i = 0, groupIndex = 0; i < n; ++i) {
-        var p = parts[i];
-        if (p === '(') {
-          // groups are 1-indexed, so max group index is count of '('
-          ++groupIndex;
-        } else if ('\\' === p.charAt(0)) {
-          var decimalValue = +p.substring(1);
-          if (decimalValue && decimalValue <= groupIndex) {
-            capturedGroups[decimalValue] = -1;
-          }
-        }
-      }
-
-      // Renumber groups and reduce capturing groups to non-capturing groups
-      // where possible.
-      for (var i = 1; i < capturedGroups.length; ++i) {
-        if (-1 === capturedGroups[i]) {
-          capturedGroups[i] = ++capturedGroupIndex;
-        }
-      }
-      for (var i = 0, groupIndex = 0; i < n; ++i) {
-        var p = parts[i];
-        if (p === '(') {
-          ++groupIndex;
-          if (capturedGroups[groupIndex] === undefined) {
-            parts[i] = '(?:';
-          }
-        } else if ('\\' === p.charAt(0)) {
-          var decimalValue = +p.substring(1);
-          if (decimalValue && decimalValue <= groupIndex) {
-            parts[i] = '\\' + capturedGroups[groupIndex];
-          }
-        }
-      }
-
-      // Remove any prefix anchors so that the output will match anywhere.
-      // ^^ really does mean an anchored match though.
-      for (var i = 0, groupIndex = 0; i < n; ++i) {
-        if ('^' === parts[i] && '^' !== parts[i + 1]) { parts[i] = ''; }
-      }
-
-      // Expand letters to groupts to handle mixing of case-sensitive and
-      // case-insensitive patterns if necessary.
-      if (regex.ignoreCase && needToFoldCase) {
-        for (var i = 0; i < n; ++i) {
-          var p = parts[i];
-          var ch0 = p.charAt(0);
-          if (p.length >= 2 && ch0 === '[') {
-            parts[i] = caseFoldCharset(p);
-          } else if (ch0 !== '\\') {
-            // TODO: handle letters in numeric escapes.
-            parts[i] = p.replace(
-                /[a-zA-Z]/g,
-                function (ch) {
-                  var cc = ch.charCodeAt(0);
-                  return '[' + String.fromCharCode(cc & ~32, cc | 32) + ']';
-                });
-          }
-        }
-      }
-
-      return parts.join('');
-    }
-
-    var rewritten = [];
-    for (var i = 0, n = regexs.length; i < n; ++i) {
-      var regex = regexs[i];
-      if (regex.global || regex.multiline) { throw new Error('' + regex); }
-      rewritten.push(
-          '(?:' + allowAnywhereFoldCaseAndRenumberGroups(regex) + ')');
-    }
-
-    return new RegExp(rewritten.join('|'), ignoreCase ? 'gi' : 'g');
-  }
-
-  var PR_innerHtmlWorks = null;
-  function getInnerHtml(node) {
-    // inner html is hopelessly broken in Safari 2.0.4 when the content is
-    // an html description of well formed XML and the containing tag is a PRE
-    // tag, so we detect that case and emulate innerHTML.
-    if (null === PR_innerHtmlWorks) {
-      var testNode = document.createElement('PRE');
-      testNode.appendChild(
-          document.createTextNode('<!DOCTYPE foo PUBLIC "foo bar">\n<foo />'));
-      PR_innerHtmlWorks = !/</.test(testNode.innerHTML);
-    }
-
-    if (PR_innerHtmlWorks) {
-      var content = node.innerHTML;
-      // XMP tags contain unescaped entities so require special handling.
-      if (isRawContent(node)) {
-        content = textToHtml(content);
-      } else if (!isPreformatted(node, content)) {
-        content = content.replace(/(<br\s*\/?>)[\r\n]+/g, '$1')
-            .replace(/(?:[\r\n]+[ \t]*)+/g, ' ');
-      }
-      return content;
-    }
-
-    var out = [];
-    for (var child = node.firstChild; child; child = child.nextSibling) {
-      normalizedHtml(child, out);
-    }
-    return out.join('');
-  }
-
-  /** returns a function that expand tabs to spaces.  This function can be fed
-    * successive chunks of text, and will maintain its own internal state to
-    * keep track of how tabs are expanded.
-    * @return {function (string) : string} a function that takes
-    *   plain text and return the text with tabs expanded.
-    * @private
-    */
-  function makeTabExpander(tabWidth) {
-    var SPACES = '                ';
-    var charInLine = 0;
-
-    return function (plainText) {
-      // walk over each character looking for tabs and newlines.
-      // On tabs, expand them.  On newlines, reset charInLine.
-      // Otherwise increment charInLine
-      var out = null;
-      var pos = 0;
-      for (var i = 0, n = plainText.length; i < n; ++i) {
-        var ch = plainText.charAt(i);
-
-        switch (ch) {
-          case '\t':
-            if (!out) { out = []; }
-            out.push(plainText.substring(pos, i));
-            // calculate how much space we need in front of this part
-            // nSpaces is the amount of padding -- the number of spaces needed
-            // to move us to the next column, where columns occur at factors of
-            // tabWidth.
-            var nSpaces = tabWidth - (charInLine % tabWidth);
-            charInLine += nSpaces;
-            for (; nSpaces >= 0; nSpaces -= SPACES.length) {
-              out.push(SPACES.substring(0, nSpaces));
-            }
-            pos = i + 1;
-            break;
-          case '\n':
-            charInLine = 0;
-            break;
-          default:
-            ++charInLine;
-        }
-      }
-      if (!out) { return plainText; }
-      out.push(plainText.substring(pos));
-      return out.join('');
-    };
-  }
-
-  var pr_chunkPattern = new RegExp(
-      '[^<]+'  // A run of characters other than '<'
-      + '|<\!--[\\s\\S]*?--\>'  // an HTML comment
-      + '|<!\\[CDATA\\[[\\s\\S]*?\\]\\]>'  // a CDATA section
-      // a probable tag that should not be highlighted
-      + '|<\/?[a-zA-Z](?:[^>\"\']|\'[^\']*\'|\"[^\"]*\")*>'
-      + '|<',  // A '<' that does not begin a larger chunk
-      'g');
-  var pr_commentPrefix = /^<\!--/;
-  var pr_cdataPrefix = /^<!\[CDATA\[/;
-  var pr_brPrefix = /^<br\b/i;
-  var pr_tagNameRe = /^<(\/?)([a-zA-Z][a-zA-Z0-9]*)/;
-
-  /** split markup into chunks of html tags (style null) and
-    * plain text (style {@link #PR_PLAIN}), converting tags which are
-    * significant for tokenization (<br>) into their textual equivalent.
-    *
-    * @param {string} s html where whitespace is considered significant.
-    * @return {Object} source code and extracted tags.
-    * @private
-    */
-  function extractTags(s) {
-    // since the pattern has the 'g' modifier and defines no capturing groups,
-    // this will return a list of all chunks which we then classify and wrap as
-    // PR_Tokens
-    var matches = s.match(pr_chunkPattern);
-    var sourceBuf = [];
-    var sourceBufLen = 0;
-    var extractedTags = [];
-    if (matches) {
-      for (var i = 0, n = matches.length; i < n; ++i) {
-        var match = matches[i];
-        if (match.length > 1 && match.charAt(0) === '<') {
-          if (pr_commentPrefix.test(match)) { continue; }
-          if (pr_cdataPrefix.test(match)) {
-            // strip CDATA prefix and suffix.  Don't unescape since it's CDATA
-            sourceBuf.push(match.substring(9, match.length - 3));
-            sourceBufLen += match.length - 12;
-          } else if (pr_brPrefix.test(match)) {
-            // <br> tags are lexically significant so convert them to text.
-            // This is undone later.
-            sourceBuf.push('\n');
-            ++sourceBufLen;
-          } else {
-            if (match.indexOf(PR_NOCODE) >= 0 && isNoCodeTag(match)) {
-              // A <span class="nocode"> will start a section that should be
-              // ignored.  Continue walking the list until we see a matching end
-              // tag.
-              var name = match.match(pr_tagNameRe)[2];
-              var depth = 1;
-              var j;
-              end_tag_loop:
-              for (j = i + 1; j < n; ++j) {
-                var name2 = matches[j].match(pr_tagNameRe);
-                if (name2 && name2[2] === name) {
-                  if (name2[1] === '/') {
-                    if (--depth === 0) { break end_tag_loop; }
-                  } else {
-                    ++depth;
-                  }
-                }
-              }
-              if (j < n) {
-                extractedTags.push(
-                    sourceBufLen, matches.slice(i, j + 1).join(''));
-                i = j;
-              } else {  // Ignore unclosed sections.
-                extractedTags.push(sourceBufLen, match);
-              }
-            } else {
-              extractedTags.push(sourceBufLen, match);
-            }
-          }
-        } else {
-          var literalText = htmlToText(match);
-          sourceBuf.push(literalText);
-          sourceBufLen += literalText.length;
-        }
-      }
-    }
-    return { source: sourceBuf.join(''), tags: extractedTags };
-  }
-
-  /** True if the given tag contains a class attribute with the nocode class. */
-  function isNoCodeTag(tag) {
-    return !!tag
-        // First canonicalize the representation of attributes
-        .replace(/\s(\w+)\s*=\s*(?:\"([^\"]*)\"|'([^\']*)'|(\S+))/g,
-                 ' $1="$2$3$4"')
-        // Then look for the attribute we want.
-        .match(/[cC][lL][aA][sS][sS]=\"[^\"]*\bnocode\b/);
-  }
-
-  /**
-   * Apply the given language handler to sourceCode and add the resulting
-   * decorations to out.
-   * @param {number} basePos the index of sourceCode within the chunk of source
-   *    whose decorations are already present on out.
-   */
-  function appendDecorations(basePos, sourceCode, langHandler, out) {
-    if (!sourceCode) { return; }
-    var job = {
-      source: sourceCode,
-      basePos: basePos
-    };
-    langHandler(job);
-    out.push.apply(out, job.decorations);
-  }
-
-  /** Given triples of [style, pattern, context] returns a lexing function,
-    * The lexing function interprets the patterns to find token boundaries and
-    * returns a decoration list of the form
-    * [index_0, style_0, index_1, style_1, ..., index_n, style_n]
-    * where index_n is an index into the sourceCode, and style_n is a style
-    * constant like PR_PLAIN.  index_n-1 <= index_n, and style_n-1 applies to
-    * all characters in sourceCode[index_n-1:index_n].
-    *
-    * The stylePatterns is a list whose elements have the form
-    * [style : string, pattern : RegExp, DEPRECATED, shortcut : string].
-    *
-    * Style is a style constant like PR_PLAIN, or can be a string of the
-    * form 'lang-FOO', where FOO is a language extension describing the
-    * language of the portion of the token in $1 after pattern executes.
-    * E.g., if style is 'lang-lisp', and group 1 contains the text
-    * '(hello (world))', then that portion of the token will be passed to the
-    * registered lisp handler for formatting.
-    * The text before and after group 1 will be restyled using this decorator
-    * so decorators should take care that this doesn't result in infinite
-    * recursion.  For example, the HTML lexer rule for SCRIPT elements looks
-    * something like ['lang-js', /<[s]cript>(.+?)<\/script>/].  This may match
-    * '<script>foo()<\/script>', which would cause the current decorator to
-    * be called with '<script>' which would not match the same rule since
-    * group 1 must not be empty, so it would be instead styled as PR_TAG by
-    * the generic tag rule.  The handler registered for the 'js' extension would
-    * then be called with 'foo()', and finally, the current decorator would
-    * be called with '<\/script>' which would not match the original rule and
-    * so the generic tag rule would identify it as a tag.
-    *
-    * Pattern must only match prefixes, and if it matches a prefix, then that
-    * match is considered a token with the same style.
-    *
-    * Context is applied to the last non-whitespace, non-comment token
-    * recognized.
-    *
-    * Shortcut is an optional string of characters, any of which, if the first
-    * character, gurantee that this pattern and only this pattern matches.
-    *
-    * @param {Array} shortcutStylePatterns patterns that always start with
-    *   a known character.  Must have a shortcut string.
-    * @param {Array} fallthroughStylePatterns patterns that will be tried in
-    *   order if the shortcut ones fail.  May have shortcuts.
-    *
-    * @return {function (Object)} a
-    *   function that takes source code and returns a list of decorations.
-    */
-  function createSimpleLexer(shortcutStylePatterns, fallthroughStylePatterns) {
-    var shortcuts = {};
-    var tokenizer;
-    (function () {
-      var allPatterns = shortcutStylePatterns.concat(fallthroughStylePatterns);
-      var allRegexs = [];
-      var regexKeys = {};
-      for (var i = 0, n = allPatterns.length; i < n; ++i) {
-        var patternParts = allPatterns[i];
-        var shortcutChars = patternParts[3];
-        if (shortcutChars) {
-          for (var c = shortcutChars.length; --c >= 0;) {
-            shortcuts[shortcutChars.charAt(c)] = patternParts;
-          }
-        }
-        var regex = patternParts[1];
-        var k = '' + regex;
-        if (!regexKeys.hasOwnProperty(k)) {
-          allRegexs.push(regex);
-          regexKeys[k] = null;
-        }
-      }
-      allRegexs.push(/[\0-\uffff]/);
-      tokenizer = combinePrefixPatterns(allRegexs);
-    })();
-
-    var nPatterns = fallthroughStylePatterns.length;
-    var notWs = /\S/;
-
-    /**
-     * Lexes job.source and produces an output array job.decorations of style
-     * classes preceded by the position at which they start in job.source in
-     * order.
-     *
-     * @param {Object} job an object like {@code
-     *    source: {string} sourceText plain text,
-     *    basePos: {int} position of job.source in the larger chunk of
-     *        sourceCode.
-     * }
-     */
-    var decorate = function (job) {
-      var sourceCode = job.source, basePos = job.basePos;
-      /** Even entries are positions in source in ascending order.  Odd enties
-        * are style markers (e.g., PR_COMMENT) that run from that position until
-        * the end.
-        * @type {Array.<number|string>}
-        */
-      var decorations = [basePos, PR_PLAIN];
-      var pos = 0;  // index into sourceCode
-      var tokens = sourceCode.match(tokenizer) || [];
-      var styleCache = {};
-
-      for (var ti = 0, nTokens = tokens.length; ti < nTokens; ++ti) {
-        var token = tokens[ti];
-        var style = styleCache[token];
-        var match = void 0;
-
-        var isEmbedded;
-        if (typeof style === 'string') {
-          isEmbedded = false;
-        } else {
-          var patternParts = shortcuts[token.charAt(0)];
-          if (patternParts) {
-            match = token.match(patternParts[1]);
-            style = patternParts[0];
-          } else {
-            for (var i = 0; i < nPatterns; ++i) {
-              patternParts = fallthroughStylePatterns[i];
-              match = token.match(patternParts[1]);
-              if (match) {
-                style = patternParts[0];
-                break;
-              }
-            }
-
-            if (!match) {  // make sure that we make progress
-              style = PR_PLAIN;
-            }
-          }
-
-          isEmbedded = style.length >= 5 && 'lang-' === style.substring(0, 5);
-          if (isEmbedded && !(match && typeof match[1] === 'string')) {
-            isEmbedded = false;
-            style = PR_SOURCE;
-          }
-
-          if (!isEmbedded) { styleCache[token] = style; }
-        }
-
-        var tokenStart = pos;
-        pos += token.length;
-
-        if (!isEmbedded) {
-          decorations.push(basePos + tokenStart, style);
-        } else {  // Treat group 1 as an embedded block of source code.
-          var embeddedSource = match[1];
-          var embeddedSourceStart = token.indexOf(embeddedSource);
-          var embeddedSourceEnd = embeddedSourceStart + embeddedSource.length;
-          if (match[2]) {
-            // If embeddedSource can be blank, then it would match at the
-            // beginning which would cause us to infinitely recurse on the
-            // entire token, so we catch the right context in match[2].
-            embeddedSourceEnd = token.length - match[2].length;
-            embeddedSourceStart = embeddedSourceEnd - embeddedSource.length;
-          }
-          var lang = style.substring(5);
-          // Decorate the left of the embedded source
-          appendDecorations(
-              basePos + tokenStart,
-              token.substring(0, embeddedSourceStart),
-              decorate, decorations);
-          // Decorate the embedded source
-          appendDecorations(
-              basePos + tokenStart + embeddedSourceStart,
-              embeddedSource,
-              langHandlerForExtension(lang, embeddedSource),
-              decorations);
-          // Decorate the right of the embedded section
-          appendDecorations(
-              basePos + tokenStart + embeddedSourceEnd,
-              token.substring(embeddedSourceEnd),
-              decorate, decorations);
-        }
-      }
-      job.decorations = decorations;
-    };
-    return decorate;
-  }
-
-  /** returns a function that produces a list of decorations from source text.
-    *
-    * This code treats ", ', and ` as string delimiters, and \ as a string
-    * escape.  It does not recognize perl's qq() style strings.
-    * It has no special handling for double delimiter escapes as in basic, or
-    * the tripled delimiters used in python, but should work on those regardless
-    * although in those cases a single string literal may be broken up into
-    * multiple adjacent string literals.
-    *
-    * It recognizes C, C++, and shell style comments.
-    *
-    * @param {Object} options a set of optional parameters.
-    * @return {function (Object)} a function that examines the source code
-    *     in the input job and builds the decoration list.
-    */
-  function sourceDecorator(options) {
-    var shortcutStylePatterns = [], fallthroughStylePatterns = [];
-    if (options['tripleQuotedStrings']) {
-      // '''multi-line-string''', 'single-line-string', and double-quoted
-      shortcutStylePatterns.push(
-          [PR_STRING,  /^(?:\'\'\'(?:[^\'\\]|\\[\s\S]|\'{1,2}(?=[^\']))*(?:\'\'\'|$)|\"\"\"(?:[^\"\\]|\\[\s\S]|\"{1,2}(?=[^\"]))*(?:\"\"\"|$)|\'(?:[^\\\']|\\[\s\S])*(?:\'|$)|\"(?:[^\\\"]|\\[\s\S])*(?:\"|$))/,
-           null, '\'"']);
-    } else if (options['multiLineStrings']) {
-      // 'multi-line-string', "multi-line-string"
-      shortcutStylePatterns.push(
-          [PR_STRING,  /^(?:\'(?:[^\\\']|\\[\s\S])*(?:\'|$)|\"(?:[^\\\"]|\\[\s\S])*(?:\"|$)|\`(?:[^\\\`]|\\[\s\S])*(?:\`|$))/,
-           null, '\'"`']);
-    } else {
-      // 'single-line-string', "single-line-string"
-      shortcutStylePatterns.push(
-          [PR_STRING,
-           /^(?:\'(?:[^\\\'\r\n]|\\.)*(?:\'|$)|\"(?:[^\\\"\r\n]|\\.)*(?:\"|$))/,
-           null, '"\'']);
-    }
-    if (options['verbatimStrings']) {
-      // verbatim-string-literal production from the C# grammar.  See issue 93.
-      fallthroughStylePatterns.push(
-          [PR_STRING, /^@\"(?:[^\"]|\"\")*(?:\"|$)/, null]);
-    }
-    if (options['hashComments']) {
-      if (options['cStyleComments']) {
-        // Stop C preprocessor declarations at an unclosed open comment
-        shortcutStylePatterns.push(
-            [PR_COMMENT, /^#(?:(?:define|elif|else|endif|error|ifdef|include|ifndef|line|pragma|undef|warning)\b|[^\r\n]*)/,
-             null, '#']);
-        fallthroughStylePatterns.push(
-            [PR_STRING,
-             /^<(?:(?:(?:\.\.\/)*|\/?)(?:[\w-]+(?:\/[\w-]+)+)?[\w-]+\.h|[a-z]\w*)>/,
-             null]);
-      } else {
-        shortcutStylePatterns.push([PR_COMMENT, /^#[^\r\n]*/, null, '#']);
-      }
-    }
-    if (options['cStyleComments']) {
-      fallthroughStylePatterns.push([PR_COMMENT, /^\/\/[^\r\n]*/, null]);
-      fallthroughStylePatterns.push(
-          [PR_COMMENT, /^\/\*[\s\S]*?(?:\*\/|$)/, null]);
-    }
-    if (options['regexLiterals']) {
-      var REGEX_LITERAL = (
-          // A regular expression literal starts with a slash that is
-          // not followed by * or / so that it is not confused with
-          // comments.
-          '/(?=[^/*])'
-          // and then contains any number of raw characters,
-          + '(?:[^/\\x5B\\x5C]'
-          // escape sequences (\x5C),
-          +    '|\\x5C[\\s\\S]'
-          // or non-nesting character sets (\x5B\x5D);
-          +    '|\\x5B(?:[^\\x5C\\x5D]|\\x5C[\\s\\S])*(?:\\x5D|$))+'
-          // finally closed by a /.
-          + '/');
-      fallthroughStylePatterns.push(
-          ['lang-regex',
-           new RegExp('^' + REGEXP_PRECEDER_PATTERN + '(' + REGEX_LITERAL + ')')
-           ]);
-    }
-
-    var keywords = options['keywords'].replace(/^\s+|\s+$/g, '');
-    if (keywords.length) {
-      fallthroughStylePatterns.push(
-          [PR_KEYWORD,
-           new RegExp('^(?:' + keywords.replace(/\s+/g, '|') + ')\\b'), null]);
-    }
-
-    shortcutStylePatterns.push([PR_PLAIN,       /^\s+/, null, ' \r\n\t\xA0']);
-    fallthroughStylePatterns.push(
-        // TODO(mikesamuel): recognize non-latin letters and numerals in idents
-        [PR_LITERAL,     /^@[a-z_$][a-z_$@0-9]*/i, null],
-        [PR_TYPE,        /^@?[A-Z]+[a-z][A-Za-z_$@0-9]*/, null],
-        [PR_PLAIN,       /^[a-z_$][a-z_$@0-9]*/i, null],
-        [PR_LITERAL,
-         new RegExp(
-             '^(?:'
-             // A hex number
-             + '0x[a-f0-9]+'
-             // or an octal or decimal number,
-             + '|(?:\\d(?:_\\d+)*\\d*(?:\\.\\d*)?|\\.\\d\\+)'
-             // possibly in scientific notation
-             + '(?:e[+\\-]?\\d+)?'
-             + ')'
-             // with an optional modifier like UL for unsigned long
-             + '[a-z]*', 'i'),
-         null, '0123456789'],
-        [PR_PUNCTUATION, /^.[^\s\w\.$@\'\"\`\/\#]*/, null]);
-
-    return createSimpleLexer(shortcutStylePatterns, fallthroughStylePatterns);
-  }
-
-  var decorateSource = sourceDecorator({
-        'keywords': ALL_KEYWORDS,
-        'hashComments': true,
-        'cStyleComments': true,
-        'multiLineStrings': true,
-        'regexLiterals': true
-      });
-
-  /** Breaks {@code job.source} around style boundaries in
-    * {@code job.decorations} while re-interleaving {@code job.extractedTags},
-    * and leaves the result in {@code job.prettyPrintedHtml}.
-    * @param {Object} job like {
-    *    source: {string} source as plain text,
-    *    extractedTags: {Array.<number|string>} extractedTags chunks of raw
-    *                   html preceded by their position in {@code job.source}
-    *                   in order
-    *    decorations: {Array.<number|string} an array of style classes preceded
-    *                 by the position at which they start in job.source in order
-    * }
-    * @private
-    */
-  function recombineTagsAndDecorations(job) {
-    var sourceText = job.source;
-    var extractedTags = job.extractedTags;
-    var decorations = job.decorations;
-
-    var html = [];
-    // index past the last char in sourceText written to html
-    var outputIdx = 0;
-
-    var openDecoration = null;
-    var currentDecoration = null;
-    var tagPos = 0;  // index into extractedTags
-    var decPos = 0;  // index into decorations
-    var tabExpander = makeTabExpander(window['PR_TAB_WIDTH']);
-
-    var adjacentSpaceRe = /([\r\n ]) /g;
-    var startOrSpaceRe = /(^| ) /gm;
-    var newlineRe = /\r\n?|\n/g;
-    var trailingSpaceRe = /[ \r\n]$/;
-    var lastWasSpace = true;  // the last text chunk emitted ended with a space.
-
-    // A helper function that is responsible for opening sections of decoration
-    // and outputing properly escaped chunks of source
-    function emitTextUpTo(sourceIdx) {
-      if (sourceIdx > outputIdx) {
-        if (openDecoration && openDecoration !== currentDecoration) {
-          // Close the current decoration
-          html.push('</span>');
-          openDecoration = null;
-        }
-        if (!openDecoration && currentDecoration) {
-          openDecoration = currentDecoration;
-          html.push('<span class="', openDecoration, '">');
-        }
-        // This interacts badly with some wikis which introduces paragraph tags
-        // into pre blocks for some strange reason.
-        // It's necessary for IE though which seems to lose the preformattedness
-        // of <pre> tags when their innerHTML is assigned.
-        // http://stud3.tuwien.ac.at/~e0226430/innerHtmlQuirk.html
-        // and it serves to undo the conversion of <br>s to newlines done in
-        // chunkify.
-        var htmlChunk = textToHtml(
-            tabExpander(sourceText.substring(outputIdx, sourceIdx)))
-            .replace(lastWasSpace
-                     ? startOrSpaceRe
-                     : adjacentSpaceRe, '$1&nbsp;');
-        // Keep track of whether we need to escape space at the beginning of the
-        // next chunk.
-        lastWasSpace = trailingSpaceRe.test(htmlChunk);
-        // IE collapses multiple adjacient <br>s into 1 line break.
-        // Prefix every <br> with '&nbsp;' can prevent such IE's behavior.
-        var lineBreakHtml = window['_pr_isIE6']() ? '&nbsp;<br />' : '<br />';
-        html.push(htmlChunk.replace(newlineRe, lineBreakHtml));
-        outputIdx = sourceIdx;
-      }
-    }
-
-    while (true) {
-      // Determine if we're going to consume a tag this time around.  Otherwise
-      // we consume a decoration or exit.
-      var outputTag;
-      if (tagPos < extractedTags.length) {
-        if (decPos < decorations.length) {
-          // Pick one giving preference to extractedTags since we shouldn't open
-          // a new style that we're going to have to immediately close in order
-          // to output a tag.
-          outputTag = extractedTags[tagPos] <= decorations[decPos];
-        } else {
-          outputTag = true;
-        }
-      } else {
-        outputTag = false;
-      }
-      // Consume either a decoration or a tag or exit.
-      if (outputTag) {
-        emitTextUpTo(extractedTags[tagPos]);
-        if (openDecoration) {
-          // Close the current decoration
-          html.push('</span>');
-          openDecoration = null;
-        }
-        html.push(extractedTags[tagPos + 1]);
-        tagPos += 2;
-      } else if (decPos < decorations.length) {
-        emitTextUpTo(decorations[decPos]);
-        currentDecoration = decorations[decPos + 1];
-        decPos += 2;
-      } else {
-        break;
-      }
-    }
-    emitTextUpTo(sourceText.length);
-    if (openDecoration) {
-      html.push('</span>');
-    }
-    job.prettyPrintedHtml = html.join('');
-  }
-
-  /** Maps language-specific file extensions to handlers. */
-  var langHandlerRegistry = {};
-  /** Register a language handler for the given file extensions.
-    * @param {function (Object)} handler a function from source code to a list
-    *      of decorations.  Takes a single argument job which describes the
-    *      state of the computation.   The single parameter has the form
-    *      {@code {
-    *        source: {string} as plain text.
-    *        decorations: {Array.<number|string>} an array of style classes
-    *                     preceded by the position at which they start in
-    *                     job.source in order.
-    *                     The language handler should assigned this field.
-    *        basePos: {int} the position of source in the larger source chunk.
-    *                 All positions in the output decorations array are relative
-    *                 to the larger source chunk.
-    *      } }
-    * @param {Array.<string>} fileExtensions
-    */
-  function registerLangHandler(handler, fileExtensions) {
-    for (var i = fileExtensions.length; --i >= 0;) {
-      var ext = fileExtensions[i];
-      if (!langHandlerRegistry.hasOwnProperty(ext)) {
-        langHandlerRegistry[ext] = handler;
-      } else if ('console' in window) {
-        console.warn('cannot override language handler %s', ext);
-      }
-    }
-  }
-  function langHandlerForExtension(extension, source) {
-    if (!(extension && langHandlerRegistry.hasOwnProperty(extension))) {
-      // Treat it as markup if the first non whitespace character is a < and
-      // the last non-whitespace character is a >.
-      extension = /^\s*</.test(source)
-          ? 'default-markup'
-          : 'default-code';
-    }
-    return langHandlerRegistry[extension];
-  }
-  registerLangHandler(decorateSource, ['default-code']);
-  registerLangHandler(
-      createSimpleLexer(
-          [],
-          [
-           [PR_PLAIN,       /^[^<?]+/],
-           [PR_DECLARATION, /^<!\w[^>]*(?:>|$)/],
-           [PR_COMMENT,     /^<\!--[\s\S]*?(?:-\->|$)/],
-           // Unescaped content in an unknown language
-           ['lang-',        /^<\?([\s\S]+?)(?:\?>|$)/],
-           ['lang-',        /^<%([\s\S]+?)(?:%>|$)/],
-           [PR_PUNCTUATION, /^(?:<[%?]|[%?]>)/],
-           ['lang-',        /^<xmp\b[^>]*>([\s\S]+?)<\/xmp\b[^>]*>/i],
-           // Unescaped content in javascript.  (Or possibly vbscript).
-           ['lang-js',      /^<script\b[^>]*>([\s\S]*?)(<\/script\b[^>]*>)/i],
-           // Contains unescaped stylesheet content
-           ['lang-css',     /^<style\b[^>]*>([\s\S]*?)(<\/style\b[^>]*>)/i],
-           ['lang-in.tag',  /^(<\/?[a-z][^<>]*>)/i]
-          ]),
-      ['default-markup', 'htm', 'html', 'mxml', 'xhtml', 'xml', 'xsl']);
-  registerLangHandler(
-      createSimpleLexer(
-          [
-           [PR_PLAIN,        /^[\s]+/, null, ' \t\r\n'],
-           [PR_ATTRIB_VALUE, /^(?:\"[^\"]*\"?|\'[^\']*\'?)/, null, '\"\'']
-           ],
-          [
-           [PR_TAG,          /^^<\/?[a-z](?:[\w.:-]*\w)?|\/?>$/i],
-           [PR_ATTRIB_NAME,  /^(?!style[\s=]|on)[a-z](?:[\w:-]*\w)?/i],
-           ['lang-uq.val',   /^=\s*([^>\'\"\s]*(?:[^>\'\"\s\/]|\/(?=\s)))/],
-           [PR_PUNCTUATION,  /^[=<>\/]+/],
-           ['lang-js',       /^on\w+\s*=\s*\"([^\"]+)\"/i],
-           ['lang-js',       /^on\w+\s*=\s*\'([^\']+)\'/i],
-           ['lang-js',       /^on\w+\s*=\s*([^\"\'>\s]+)/i],
-           ['lang-css',      /^style\s*=\s*\"([^\"]+)\"/i],
-           ['lang-css',      /^style\s*=\s*\'([^\']+)\'/i],
-           ['lang-css',      /^style\s*=\s*([^\"\'>\s]+)/i]
-           ]),
-      ['in.tag']);
-  registerLangHandler(
-      createSimpleLexer([], [[PR_ATTRIB_VALUE, /^[\s\S]+/]]), ['uq.val']);
-  registerLangHandler(sourceDecorator({
-          'keywords': CPP_KEYWORDS,
-          'hashComments': true,
-          'cStyleComments': true
-        }), ['c', 'cc', 'cpp', 'cxx', 'cyc', 'm']);
-  registerLangHandler(sourceDecorator({
-          'keywords': 'null true false'
-        }), ['json']);
-  registerLangHandler(sourceDecorator({
-          'keywords': CSHARP_KEYWORDS,
-          'hashComments': true,
-          'cStyleComments': true,
-          'verbatimStrings': true
-        }), ['cs']);
-  registerLangHandler(sourceDecorator({
-          'keywords': JAVA_KEYWORDS,
-          'cStyleComments': true
-        }), ['java']);
-  registerLangHandler(sourceDecorator({
-          'keywords': SH_KEYWORDS,
-          'hashComments': true,
-          'multiLineStrings': true
-        }), ['bsh', 'csh', 'sh']);
-  registerLangHandler(sourceDecorator({
-          'keywords': PYTHON_KEYWORDS,
-          'hashComments': true,
-          'multiLineStrings': true,
-          'tripleQuotedStrings': true
-        }), ['cv', 'py']);
-  registerLangHandler(sourceDecorator({
-          'keywords': PERL_KEYWORDS,
-          'hashComments': true,
-          'multiLineStrings': true,
-          'regexLiterals': true
-        }), ['perl', 'pl', 'pm']);
-  registerLangHandler(sourceDecorator({
-          'keywords': RUBY_KEYWORDS,
-          'hashComments': true,
-          'multiLineStrings': true,
-          'regexLiterals': true
-        }), ['rb']);
-  registerLangHandler(sourceDecorator({
-          'keywords': JSCRIPT_KEYWORDS,
-          'cStyleComments': true,
-          'regexLiterals': true
-        }), ['js']);
-  registerLangHandler(
-      createSimpleLexer([], [[PR_STRING, /^[\s\S]+/]]), ['regex']);
-
-  function applyDecorator(job) {
-    var sourceCodeHtml = job.sourceCodeHtml;
-    var opt_langExtension = job.langExtension;
-
-    // Prepopulate output in case processing fails with an exception.
-    job.prettyPrintedHtml = sourceCodeHtml;
-
-    try {
-      // Extract tags, and convert the source code to plain text.
-      var sourceAndExtractedTags = extractTags(sourceCodeHtml);
-      /** Plain text. @type {string} */
-      var source = sourceAndExtractedTags.source;
-      job.source = source;
-      job.basePos = 0;
-
-      /** Even entries are positions in source in ascending order.  Odd entries
-        * are tags that were extracted at that position.
-        * @type {Array.<number|string>}
-        */
-      job.extractedTags = sourceAndExtractedTags.tags;
-
-      // Apply the appropriate language handler
-      langHandlerForExtension(opt_langExtension, source)(job);
-      // Integrate the decorations and tags back into the source code to produce
-      // a decorated html string which is left in job.prettyPrintedHtml.
-      recombineTagsAndDecorations(job);
-    } catch (e) {
-      if ('console' in window) {
-        console.log(e);
-        console.trace();
-      }
-    }
-  }
-
-  function prettyPrintOne(sourceCodeHtml, opt_langExtension) {
-    var job = {
-      sourceCodeHtml: sourceCodeHtml,
-      langExtension: opt_langExtension
-    };
-    applyDecorator(job);
-    return job.prettyPrintedHtml;
-  }
-
-  function prettyPrint(opt_whenDone) {
-    var isIE678 = window['_pr_isIE6']();
-    var ieNewline = isIE678 === 6 ? '\r\n' : '\r';
-    // See bug 71 and http://stackoverflow.com/questions/136443/why-doesnt-ie7-
-
-    // fetch a list of nodes to rewrite
-    var codeSegments = [
-        document.getElementsByTagName('pre'),
-        document.getElementsByTagName('code'),
-        document.getElementsByTagName('td'),  /* ND Change: Add tables to support prototypes. */
-        document.getElementsByTagName('xmp') ];
-    var elements = [];
-    for (var i = 0; i < codeSegments.length; ++i) {
-      for (var j = 0, n = codeSegments[i].length; j < n; ++j) {
-        elements.push(codeSegments[i][j]);
-      }
-    }
-    codeSegments = null;
-
-    var clock = Date;
-    if (!clock['now']) {
-      clock = { 'now': function () { return (new Date).getTime(); } };
-    }
-
-    // The loop is broken into a series of continuations to make sure that we
-    // don't make the browser unresponsive when rewriting a large page.
-    var k = 0;
-    var prettyPrintingJob;
-
-    function doWork() {
-      var endTime = (window['PR_SHOULD_USE_CONTINUATION'] ?
-                     clock.now() + 250 /* ms */ :
-                     Infinity);
-      for (; k < elements.length && clock.now() < endTime; k++) {
-        var cs = elements[k];
-        if (cs.className && cs.className.indexOf('prettyprint') >= 0) {
-          // If the classes includes a language extensions, use it.
-          // Language extensions can be specified like
-          //     <pre class="prettyprint lang-cpp">
-          // the language extension "cpp" is used to find a language handler as
-          // passed to PR_registerLangHandler.
-          var langExtension = cs.className.match(/\blang-(\w+)\b/);
-          if (langExtension) { langExtension = langExtension[1]; }
-
-          // make sure this is not nested in an already prettified element
-          var nested = false;
-          for (var p = cs.parentNode; p; p = p.parentNode) {
-            if ((p.tagName === 'pre' || p.tagName === 'code' ||
-                 p.tagName === 'xmp' || p.tagName === 'td') &&  /* ND Change: Add tables to support prototypes */
-                p.className && p.className.indexOf('prettyprint') >= 0) {
-              nested = true;
-              break;
-            }
-          }
-          if (!nested) {
-            // fetch the content as a snippet of properly escaped HTML.
-            // Firefox adds newlines at the end.
-            var content = getInnerHtml(cs);
-            content = content.replace(/(?:\r\n?|\n)$/, '');
-
-	  		/* ND Change: we need to preserve &nbsp;s so change them to a special character instead of a space. */
-			content = content.replace(/&nbsp;/g, '\x11');
-
-            // do the pretty printing
-            prettyPrintingJob = {
-              sourceCodeHtml: content,
-              langExtension: langExtension,
-              sourceNode: cs
-            };
-            applyDecorator(prettyPrintingJob);
-            replaceWithPrettyPrintedHtml();
-          }
-        }
-      }
-      if (k < elements.length) {
-        // finish up in a continuation
-        setTimeout(doWork, 250);
-      } else if (opt_whenDone) {
-        opt_whenDone();
-      }
-    }
-
-    function replaceWithPrettyPrintedHtml() {
-      var newContent = prettyPrintingJob.prettyPrintedHtml;
-      if (!newContent) { return; }
-
-      /* ND Change: Restore the preserved &nbsp;s.  */
-	  newContent = newContent.replace(/\x11/g, '&nbsp;');
-
-      var cs = prettyPrintingJob.sourceNode;
-
-      // push the prettified html back into the tag.
-      if (!isRawContent(cs)) {
-        // just replace the old html with the new
-        cs.innerHTML = newContent;
-      } else {
-        // we need to change the tag to a <pre> since <xmp>s do not allow
-        // embedded tags such as the span tags used to attach styles to
-        // sections of source code.
-        var pre = document.createElement('PRE');
-        for (var i = 0; i < cs.attributes.length; ++i) {
-          var a = cs.attributes[i];
-          if (a.specified) {
-            var aname = a.name.toLowerCase();
-            if (aname === 'class') {
-              pre.className = a.value;  // For IE 6
-            } else {
-              pre.setAttribute(a.name, a.value);
-            }
-          }
-        }
-        pre.innerHTML = newContent;
-
-        // remove the old
-        cs.parentNode.replaceChild(pre, cs);
-        cs = pre;
-      }
-
-      // Replace <br>s with line-feeds so that copying and pasting works
-      // on IE 6.
-      // Doing this on other browsers breaks lots of stuff since \r\n is
-      // treated as two newlines on Firefox, and doing this also slows
-      // down rendering.
-      if (isIE678 && cs.tagName === 'PRE') {
-        var lineBreaks = cs.getElementsByTagName('br');
-        for (var j = lineBreaks.length; --j >= 0;) {
-          var lineBreak = lineBreaks[j];
-          lineBreak.parentNode.replaceChild(
-              document.createTextNode(ieNewline), lineBreak);
-        }
-      }
-    }
-
-    doWork();
-  }
-
-  window['PR_normalizedHtml'] = normalizedHtml;
-  window['prettyPrintOne'] = prettyPrintOne;
-  window['prettyPrint'] = prettyPrint;
-  window['PR'] = {
-        'combinePrefixPatterns': combinePrefixPatterns,
-        'createSimpleLexer': createSimpleLexer,
-        'registerLangHandler': registerLangHandler,
-        'sourceDecorator': sourceDecorator,
-        'PR_ATTRIB_NAME': PR_ATTRIB_NAME,
-        'PR_ATTRIB_VALUE': PR_ATTRIB_VALUE,
-        'PR_COMMENT': PR_COMMENT,
-        'PR_DECLARATION': PR_DECLARATION,
-        'PR_KEYWORD': PR_KEYWORD,
-        'PR_LITERAL': PR_LITERAL,
-        'PR_NOCODE': PR_NOCODE,
-        'PR_PLAIN': PR_PLAIN,
-        'PR_PUNCTUATION': PR_PUNCTUATION,
-        'PR_SOURCE': PR_SOURCE,
-        'PR_STRING': PR_STRING,
-        'PR_TAG': PR_TAG,
-        'PR_TYPE': PR_TYPE
-      };
-})();
-
-
-// ____________________________________________________________________________
-
-
-
-// Lua extension
-
-PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\r \xA0]+/,null,'	\n\r \xa0'],[PR.PR_STRING,/^(?:\"(?:[^\"\\]|\\[\s\S])*(?:\"|$)|\'(?:[^\'\\]|\\[\s\S])*(?:\'|$))/,null,'\"\'']],[[PR.PR_COMMENT,/^--(?:\[(=*)\[[\s\S]*?(?:\]\1\]|$)|[^\r\n]*)/],[PR.PR_STRING,/^\[(=*)\[[\s\S]*?(?:\]\1\]|$)/],[PR.PR_KEYWORD,/^(?:and|break|do|else|elseif|end|false|for|function|if|in|local|nil|not|or|repeat|return|then|true|until|while)\b/,null],[PR.PR_LITERAL,/^[+-]?(?:0x[\da-f]+|(?:(?:\.\d+|\d+(?:\.\d*)?)(?:e[+\-]?\d+)?))/i],[PR.PR_PLAIN,/^[a-z_]\w*/i],[PR.PR_PUNCTUATION,/^[^\w\t\n\r \xA0][^\w\t\n\r \xA0\"\'\-\+=]*/]]),['lua'])
-
-
-// Haskell extension
-
-PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\x0B\x0C\r ]+/,null,'	\n\r '],[PR.PR_STRING,/^\"(?:[^\"\\\n\x0C\r]|\\[\s\S])*(?:\"|$)/,null,'\"'],[PR.PR_STRING,/^\'(?:[^\'\\\n\x0C\r]|\\[^&])\'?/,null,'\''],[PR.PR_LITERAL,/^(?:0o[0-7]+|0x[\da-f]+|\d+(?:\.\d+)?(?:e[+\-]?\d+)?)/i,null,'0123456789']],[[PR.PR_COMMENT,/^(?:(?:--+(?:[^\r\n\x0C]*)?)|(?:\{-(?:[^-]|-+[^-\}])*-\}))/],[PR.PR_KEYWORD,/^(?:case|class|data|default|deriving|do|else|if|import|in|infix|infixl|infixr|instance|let|module|newtype|of|then|type|where|_)(?=[^a-zA-Z0-9\']|$)/,null],[PR.PR_PLAIN,/^(?:[A-Z][\w\']*\.)*[a-zA-Z][\w\']*/],[PR.PR_PUNCTUATION,/^[^\t\n\x0B\x0C\r a-zA-Z0-9\'\"]+/]]),['hs'])
-
-
-// ML extension
-
-PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\r \xA0]+/,null,'	\n\r \xa0'],[PR.PR_COMMENT,/^#(?:if[\t\n\r \xA0]+(?:[a-z_$][\w\']*|``[^\r\n\t`]*(?:``|$))|else|endif|light)/i,null,'#'],[PR.PR_STRING,/^(?:\"(?:[^\"\\]|\\[\s\S])*(?:\"|$)|\'(?:[^\'\\]|\\[\s\S])*(?:\'|$))/,null,'\"\'']],[[PR.PR_COMMENT,/^(?:\/\/[^\r\n]*|\(\*[\s\S]*?\*\))/],[PR.PR_KEYWORD,/^(?:abstract|and|as|assert|begin|class|default|delegate|do|done|downcast|downto|elif|else|end|exception|extern|false|finally|for|fun|function|if|in|inherit|inline|interface|internal|lazy|let|match|member|module|mutable|namespace|new|null|of|open|or|override|private|public|rec|return|static|struct|then|to|true|try|type|upcast|use|val|void|when|while|with|yield|asr|land|lor|lsl|lsr|lxor|mod|sig|atomic|break|checked|component|const|constraint|constructor|continue|eager|event|external|fixed|functor|global|include|method|mixin|object|parallel|process|protected|pure|sealed|trait|virtual|volatile)\b/],[PR.PR_LITERAL,/^[+\-]?(?:0x[\da-f]+|(?:(?:\.\d+|\d+(?:\.\d*)?)(?:e[+\-]?\d+)?))/i],[PR.PR_PLAIN,/^(?:[a-z_]\w*[!?#]?|``[^\r\n\t`]*(?:``|$))/i],[PR.PR_PUNCTUATION,/^[^\t\n\r \xA0\"\'\w]+/]]),['fs','ml'])
-
-
-// SQL extension
-
-PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\r \xA0]+/,null,'	\n\r \xa0'],[PR.PR_STRING,/^(?:"(?:[^\"\\]|\\.)*"|'(?:[^\'\\]|\\.)*')/,null,'\"\'']],[[PR.PR_COMMENT,/^(?:--[^\r\n]*|\/\*[\s\S]*?(?:\*\/|$))/],[PR.PR_KEYWORD,/^(?:ADD|ALL|ALTER|AND|ANY|AS|ASC|AUTHORIZATION|BACKUP|BEGIN|BETWEEN|BREAK|BROWSE|BULK|BY|CASCADE|CASE|CHECK|CHECKPOINT|CLOSE|CLUSTERED|COALESCE|COLLATE|COLUMN|COMMIT|COMPUTE|CONSTRAINT|CONTAINS|CONTAINSTABLE|CONTINUE|CONVERT|CREATE|CROSS|CURRENT|CURRENT_DATE|CURRENT_TIME|CURRENT_TIMESTAMP|CURRENT_USER|CURSOR|DATABASE|DBCC|DEALLOCATE|DECLARE|DEFAULT|DELETE|DENY|DESC|DISK|DISTINCT|DISTRIBUTED|DOUBLE|DROP|DUMMY|DUMP|ELSE|END|ERRLVL|ESCAPE|EXCEPT|EXEC|EXECUTE|EXISTS|EXIT|FETCH|FILE|FILLFACTOR|FOR|FOREIGN|FREETEXT|FREETEXTTABLE|FROM|FULL|FUNCTION|GOTO|GRANT|GROUP|HAVING|HOLDLOCK|IDENTITY|IDENTITYCOL|IDENTITY_INSERT|IF|IN|INDEX|INNER|INSERT|INTERSECT|INTO|IS|JOIN|KEY|KILL|LEFT|LIKE|LINENO|LOAD|NATIONAL|NOCHECK|NONCLUSTERED|NOT|NULL|NULLIF|OF|OFF|OFFSETS|ON|OPEN|OPENDATASOURCE|OPENQUERY|OPENROWSET|OPENXML|OPTION|OR|ORDER|OUTER|OVER|PERCENT|PLAN|PRECISION|PRIMARY|PRINT|PROC|PROCEDURE|PUBLIC|RAISERROR|READ|READTEXT|RECONFIGURE|REFERENCES|REPLICATION|RESTORE|RESTRICT|RETURN|REVOKE|RIGHT|ROLLBACK|ROWCOUNT|ROWGUIDCOL|RULE|SAVE|SCHEMA|SELECT|SESSION_USER|SET|SETUSER|SHUTDOWN|SOME|STATISTICS|SYSTEM_USER|TABLE|TEXTSIZE|THEN|TO|TOP|TRAN|TRANSACTION|TRIGGER|TRUNCATE|TSEQUAL|UNION|UNIQUE|UPDATE|UPDATETEXT|USE|USER|VALUES|VARYING|VIEW|WAITFOR|WHEN|WHERE|WHILE|WITH|WRITETEXT)(?=[^\w-]|$)/i,null],[PR.PR_LITERAL,/^[+-]?(?:0x[\da-f]+|(?:(?:\.\d+|\d+(?:\.\d*)?)(?:e[+\-]?\d+)?))/i],[PR.PR_PLAIN,/^[a-z_][\w-]*/i],[PR.PR_PUNCTUATION,/^[^\w\t\n\r \xA0\"\'][^\w\t\n\r \xA0+\-\"\']*/]]),['sql'])
-
-
-// VB extension
-
-PR.registerLangHandler(PR.createSimpleLexer([[PR.PR_PLAIN,/^[\t\n\r \xA0\u2028\u2029]+/,null,'	\n\r \xa0\u2028\u2029'],[PR.PR_STRING,/^(?:[\"\u201C\u201D](?:[^\"\u201C\u201D]|[\"\u201C\u201D]{2})(?:[\"\u201C\u201D]c|$)|[\"\u201C\u201D](?:[^\"\u201C\u201D]|[\"\u201C\u201D]{2})*(?:[\"\u201C\u201D]|$))/i,null,'\"\u201c\u201d'],[PR.PR_COMMENT,/^[\'\u2018\u2019][^\r\n\u2028\u2029]*/,null,'\'\u2018\u2019']],[[PR.PR_KEYWORD,/^(?:AddHandler|AddressOf|Alias|And|AndAlso|Ansi|As|Assembly|Auto|Boolean|ByRef|Byte|ByVal|Call|Case|Catch|CBool|CByte|CChar|CDate|CDbl|CDec|Char|CInt|Class|CLng|CObj|Const|CShort|CSng|CStr|CType|Date|Decimal|Declare|Default|Delegate|Dim|DirectCast|Do|Double|Each|Else|ElseIf|End|EndIf|Enum|Erase|Error|Event|Exit|Finally|For|Friend|Function|Get|GetType|GoSub|GoTo|Handles|If|Implements|Imports|In|Inherits|Integer|Interface|Is|Let|Lib|Like|Long|Loop|Me|Mod|Module|MustInherit|MustOverride|MyBase|MyClass|Namespace|New|Next|Not|NotInheritable|NotOverridable|Object|On|Option|Optional|Or|OrElse|Overloads|Overridable|Overrides|ParamArray|Preserve|Private|Property|Protected|Public|RaiseEvent|ReadOnly|ReDim|RemoveHandler|Resume|Return|Select|Set|Shadows|Shared|Short|Single|Static|Step|Stop|String|Structure|Sub|SyncLock|Then|Throw|To|Try|TypeOf|Unicode|Until|Variant|Wend|When|While|With|WithEvents|WriteOnly|Xor|EndIf|GoSub|Let|Variant|Wend)\b/i,null],[PR.PR_COMMENT,/^REM[^\r\n\u2028\u2029]*/i],[PR.PR_LITERAL,/^(?:True\b|False\b|Nothing\b|\d+(?:E[+\-]?\d+[FRD]?|[FRDSIL])?|(?:&H[0-9A-F]+|&O[0-7]+)[SIL]?|\d*\.\d+(?:E[+\-]?\d+)?[FRD]?|#\s+(?:\d+[\-\/]\d+[\-\/]\d+(?:\s+\d+:\d+(?::\d+)?(\s*(?:AM|PM))?)?|\d+:\d+(?::\d+)?(\s*(?:AM|PM))?)\s+#)/i],[PR.PR_PLAIN,/^(?:(?:[a-z]|_\w)\w*|\[(?:[a-z]|_\w)\w*\])/i],[PR.PR_PUNCTUATION,/^[^\w\t\n\r \"\'\[\]\xA0\u2018\u2019\u201C\u201D\u2028\u2029]+/],[PR.PR_PUNCTUATION,/^(?:\[|\])/]]),['vb','vbs'])