@highlightjs/cdn-assets/highlight.js

/*!
  Highlight.js v11.10.0 (git: 366a8bd012)
  (c) 2006-2024 Josh Goebel <hello@joshgoebel.com> and other contributors
  License: BSD-3-Clause
 */
var hljs = (function () {
  'use strict';

  /* eslint-disable no-multi-assign */

  function deepFreeze(obj) {
    if (obj instanceof Map) {
      obj.clear =
        obj.delete =
        obj.set =
          function () {
            throw new Error('map is read-only');
          };
    } else if (obj instanceof Set) {
      obj.add =
        obj.clear =
        obj.delete =
          function () {
            throw new Error('set is read-only');
          };
    }

    // Freeze self
    Object.freeze(obj);

    Object.getOwnPropertyNames(obj).forEach((name) => {
      const prop = obj[name];
      const type = typeof prop;

      // Freeze prop if it is an object or function and also not already frozen
      if ((type === 'object' || type === 'function') && !Object.isFrozen(prop)) {
        deepFreeze(prop);
      }
    });

    return obj;
  }

  /** @typedef {import('highlight.js').CallbackResponse} CallbackResponse */
  /** @typedef {import('highlight.js').CompiledMode} CompiledMode */
  /** @implements CallbackResponse */

  class Response {
    /**
     * @param {CompiledMode} mode
     */
    constructor(mode) {
      // eslint-disable-next-line no-undefined
      if (mode.data === undefined) mode.data = {};

      this.data = mode.data;
      this.isMatchIgnored = false;
    }

    ignoreMatch() {
      this.isMatchIgnored = true;
    }
  }

  /**
   * @param {string} value
   * @returns {string}
   */
  function escapeHTML(value) {
    return value
      .replace(/&/g, '&amp;')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;')
      .replace(/'/g, '&#x27;');
  }

  /**
   * performs a shallow merge of multiple objects into one
   *
   * @template T
   * @param {T} original
   * @param {Record<string,any>[]} objects
   * @returns {T} a single new object
   */
  function inherit$1(original, ...objects) {
    /** @type Record<string,any> */
    const result = Object.create(null);

    for (const key in original) {
      result[key] = original[key];
    }
    objects.forEach(function(obj) {
      for (const key in obj) {
        result[key] = obj[key];
      }
    });
    return /** @type {T} */ (result);
  }

  /**
   * @typedef {object} Renderer
   * @property {(text: string) => void} addText
   * @property {(node: Node) => void} openNode
   * @property {(node: Node) => void} closeNode
   * @property {() => string} value
   */

  /** @typedef {{scope?: string, language?: string, sublanguage?: boolean}} Node */
  /** @typedef {{walk: (r: Renderer) => void}} Tree */
  /** */

  const SPAN_CLOSE = '</span>';

  /**
   * Determines if a node needs to be wrapped in <span>
   *
   * @param {Node} node */
  const emitsWrappingTags = (node) => {
    // rarely we can have a sublanguage where language is undefined
    // TODO: track down why
    return !!node.scope;
  };

  /**
   *
   * @param {string} name
   * @param {{prefix:string}} options
   */
  const scopeToCSSClass = (name, { prefix }) => {
    // sub-language
    if (name.startsWith("language:")) {
      return name.replace("language:", "language-");
    }
    // tiered scope: comment.line
    if (name.includes(".")) {
      const pieces = name.split(".");
      return [
        `${prefix}${pieces.shift()}`,
        ...(pieces.map((x, i) => `${x}${"_".repeat(i + 1)}`))
      ].join(" ");
    }
    // simple scope
    return `${prefix}${name}`;
  };

  /** @type {Renderer} */
  class HTMLRenderer {
    /**
     * Creates a new HTMLRenderer
     *
     * @param {Tree} parseTree - the parse tree (must support `walk` API)
     * @param {{classPrefix: string}} options
     */
    constructor(parseTree, options) {
      this.buffer = "";
      this.classPrefix = options.classPrefix;
      parseTree.walk(this);
    }

    /**
     * Adds texts to the output stream
     *
     * @param {string} text */
    addText(text) {
      this.buffer += escapeHTML(text);
    }

    /**
     * Adds a node open to the output stream (if needed)
     *
     * @param {Node} node */
    openNode(node) {
      if (!emitsWrappingTags(node)) return;

      const className = scopeToCSSClass(node.scope,
        { prefix: this.classPrefix });
      this.span(className);
    }

    /**
     * Adds a node close to the output stream (if needed)
     *
     * @param {Node} node */
    closeNode(node) {
      if (!emitsWrappingTags(node)) return;

      this.buffer += SPAN_CLOSE;
    }

    /**
     * returns the accumulated buffer
    */
    value() {
      return this.buffer;
    }

    // helpers

    /**
     * Builds a span element
     *
     * @param {string} className */
    span(className) {
      this.buffer += `<span class="${className}">`;
    }
  }

  /** @typedef {{scope?: string, language?: string, children: Node[]} | string} Node */
  /** @typedef {{scope?: string, language?: string, children: Node[]} } DataNode */
  /** @typedef {import('highlight.js').Emitter} Emitter */
  /**  */

  /** @returns {DataNode} */
  const newNode = (opts = {}) => {
    /** @type DataNode */
    const result = { children: [] };
    Object.assign(result, opts);
    return result;
  };

  class TokenTree {
    constructor() {
      /** @type DataNode */
      this.rootNode = newNode();
      this.stack = [this.rootNode];
    }

    get top() {
      return this.stack[this.stack.length - 1];
    }

    get root() { return this.rootNode; }

    /** @param {Node} node */
    add(node) {
      this.top.children.push(node);
    }

    /** @param {string} scope */
    openNode(scope) {
      /** @type Node */
      const node = newNode({ scope });
      this.add(node);
      this.stack.push(node);
    }

    closeNode() {
      if (this.stack.length > 1) {
        return this.stack.pop();
      }
      // eslint-disable-next-line no-undefined
      return undefined;
    }

    closeAllNodes() {
      while (this.closeNode());
    }

    toJSON() {
      return JSON.stringify(this.rootNode, null, 4);
    }

    /**
     * @typedef { import("./html_renderer").Renderer } Renderer
     * @param {Renderer} builder
     */
    walk(builder) {
      // this does not
      return this.constructor._walk(builder, this.rootNode);
      // this works
      // return TokenTree._walk(builder, this.rootNode);
    }

    /**
     * @param {Renderer} builder
     * @param {Node} node
     */
    static _walk(builder, node) {
      if (typeof node === "string") {
        builder.addText(node);
      } else if (node.children) {
        builder.openNode(node);
        node.children.forEach((child) => this._walk(builder, child));
        builder.closeNode(node);
      }
      return builder;
    }

    /**
     * @param {Node} node
     */
    static _collapse(node) {
      if (typeof node === "string") return;
      if (!node.children) return;

      if (node.children.every(el => typeof el === "string")) {
        // node.text = node.children.join("");
        // delete node.children;
        node.children = [node.children.join("")];
      } else {
        node.children.forEach((child) => {
          TokenTree._collapse(child);
        });
      }
    }
  }

  /**
    Currently this is all private API, but this is the minimal API necessary
    that an Emitter must implement to fully support the parser.

    Minimal interface:

    - addText(text)
    - __addSublanguage(emitter, subLanguageName)
    - startScope(scope)
    - endScope()
    - finalize()
    - toHTML()

  */

  /**
   * @implements {Emitter}
   */
  class TokenTreeEmitter extends TokenTree {
    /**
     * @param {*} options
     */
    constructor(options) {
      super();
      this.options = options;
    }

    /**
     * @param {string} text
     */
    addText(text) {
      if (text === "") { return; }

      this.add(text);
    }

    /** @param {string} scope */
    startScope(scope) {
      this.openNode(scope);
    }

    endScope() {
      this.closeNode();
    }

    /**
     * @param {Emitter & {root: DataNode}} emitter
     * @param {string} name
     */
    __addSublanguage(emitter, name) {
      /** @type DataNode */
      const node = emitter.root;
      if (name) node.scope = `language:${name}`;

      this.add(node);
    }

    toHTML() {
      const renderer = new HTMLRenderer(this, this.options);
      return renderer.value();
    }

    finalize() {
      this.closeAllNodes();
      return true;
    }
  }

  /**
   * @param {string} value
   * @returns {RegExp}
   * */

  /**
   * @param {RegExp | string } re
   * @returns {string}
   */
  function source(re) {
    if (!re) return null;
    if (typeof re === "string") return re;

    return re.source;
  }

  /**
   * @param {RegExp | string } re
   * @returns {string}
   */
  function lookahead(re) {
    return concat('(?=', re, ')');
  }

  /**
   * @param {RegExp | string } re
   * @returns {string}
   */
  function anyNumberOfTimes(re) {
    return concat('(?:', re, ')*');
  }

  /**
   * @param {RegExp | string } re
   * @returns {string}
   */
  function optional(re) {
    return concat('(?:', re, ')?');
  }

  /**
   * @param {...(RegExp | string) } args
   * @returns {string}
   */
  function concat(...args) {
    const joined = args.map((x) => source(x)).join("");
    return joined;
  }

  /**
   * @param { Array<string | RegExp | Object> } args
   * @returns {object}
   */
  function stripOptionsFromArgs(args) {
    const opts = args[args.length - 1];

    if (typeof opts === 'object' && opts.constructor === Object) {
      args.splice(args.length - 1, 1);
      return opts;
    } else {
      return {};
    }
  }

  /** @typedef { {capture?: boolean} } RegexEitherOptions */

  /**
   * Any of the passed expresssions may match
   *
   * Creates a huge this | this | that | that match
   * @param {(RegExp | string)[] | [...(RegExp | string)[], RegexEitherOptions]} args
   * @returns {string}
   */
  function either(...args) {
    /** @type { object & {capture?: boolean} }  */
    const opts = stripOptionsFromArgs(args);
    const joined = '('
      + (opts.capture ? "" : "?:")
      + args.map((x) => source(x)).join("|") + ")";
    return joined;
  }

  /**
   * @param {RegExp | string} re
   * @returns {number}
   */
  function countMatchGroups(re) {
    return (new RegExp(re.toString() + '|')).exec('').length - 1;
  }

  /**
   * Does lexeme start with a regular expression match at the beginning
   * @param {RegExp} re
   * @param {string} lexeme
   */
  function startsWith(re, lexeme) {
    const match = re && re.exec(lexeme);
    return match && match.index === 0;
  }

  // BACKREF_RE matches an open parenthesis or backreference. To avoid
  // an incorrect parse, it additionally matches the following:
  // - [...] elements, where the meaning of parentheses and escapes change
  // - other escape sequences, so we do not misparse escape sequences as
  //   interesting elements
  // - non-matching or lookahead parentheses, which do not capture. These
  //   follow the '(' with a '?'.
  const BACKREF_RE = /\[(?:[^\\\]]|\\.)*\]|\(\??|\\([1-9][0-9]*)|\\./;

  // **INTERNAL** Not intended for outside usage
  // join logically computes regexps.join(separator), but fixes the
  // backreferences so they continue to match.
  // it also places each individual regular expression into it's own
  // match group, keeping track of the sequencing of those match groups
  // is currently an exercise for the caller. :-)
  /**
   * @param {(string | RegExp)[]} regexps
   * @param {{joinWith: string}} opts
   * @returns {string}
   */
  function _rewriteBackreferences(regexps, { joinWith }) {
    let numCaptures = 0;

    return regexps.map((regex) => {
      numCaptures += 1;
      const offset = numCaptures;
      let re = source(regex);
      let out = '';

      while (re.length > 0) {
        const match = BACKREF_RE.exec(re);
        if (!match) {
          out += re;
          break;
        }
        out += re.substring(0, match.index);
        re = re.substring(match.index + match[0].length);
        if (match[0][0] === '\\' && match[1]) {
          // Adjust the backreference.
          out += '\\' + String(Number(match[1]) + offset);
        } else {
          out += match[0];
          if (match[0] === '(') {
            numCaptures++;
          }
        }
      }
      return out;
    }).map(re => `(${re})`).join(joinWith);
  }

  /** @typedef {import('highlight.js').Mode} Mode */
  /** @typedef {import('highlight.js').ModeCallback} ModeCallback */

  // Common regexps
  const MATCH_NOTHING_RE = /\b\B/;
  const IDENT_RE$1 = '[a-zA-Z]\\w*';
  const UNDERSCORE_IDENT_RE = '[a-zA-Z_]\\w*';
  const NUMBER_RE = '\\b\\d+(\\.\\d+)?';
  const C_NUMBER_RE = '(-?)(\\b0[xX][a-fA-F0-9]+|(\\b\\d+(\\.\\d*)?|\\.\\d+)([eE][-+]?\\d+)?)'; // 0x..., 0..., decimal, float
  const BINARY_NUMBER_RE = '\\b(0b[01]+)'; // 0b...
  const RE_STARTERS_RE = '!|!=|!==|%|%=|&|&&|&=|\\*|\\*=|\\+|\\+=|,|-|-=|/=|/|:|;|<<|<<=|<=|<|===|==|=|>>>=|>>=|>=|>>>|>>|>|\\?|\\[|\\{|\\(|\\^|\\^=|\\||\\|=|\\|\\||~';

  /**
  * @param { Partial<Mode> & {binary?: string | RegExp} } opts
  */
  const SHEBANG = (opts = {}) => {
    const beginShebang = /^#![ ]*\//;
    if (opts.binary) {
      opts.begin = concat(
        beginShebang,
        /.*\b/,
        opts.binary,
        /\b.*/);
    }
    return inherit$1({
      scope: 'meta',
      begin: beginShebang,
      end: /$/,
      relevance: 0,
      /** @type {ModeCallback} */
      "on:begin": (m, resp) => {
        if (m.index !== 0) resp.ignoreMatch();
      }
    }, opts);
  };

  // Common modes
  const BACKSLASH_ESCAPE = {
    begin: '\\\\[\\s\\S]', relevance: 0
  };
  const APOS_STRING_MODE = {
    scope: 'string',
    begin: '\'',
    end: '\'',
    illegal: '\\n',
    contains: [BACKSLASH_ESCAPE]
  };
  const QUOTE_STRING_MODE = {
    scope: 'string',
    begin: '"',
    end: '"',
    illegal: '\\n',
    contains: [BACKSLASH_ESCAPE]
  };
  const PHRASAL_WORDS_MODE = {
    begin: /\b(a|an|the|are|I'm|isn't|don't|doesn't|won't|but|just|should|pretty|simply|enough|gonna|going|wtf|so|such|will|you|your|they|like|more)\b/
  };
  /**
   * Creates a comment mode
   *
   * @param {string | RegExp} begin
   * @param {string | RegExp} end
   * @param {Mode | {}} [modeOptions]
   * @returns {Partial<Mode>}
   */
  const COMMENT = function(begin, end, modeOptions = {}) {
    const mode = inherit$1(
      {
        scope: 'comment',
        begin,
        end,
        contains: []
      },
      modeOptions
    );
    mode.contains.push({
      scope: 'doctag',
      // hack to avoid the space from being included. the space is necessary to
      // match here to prevent the plain text rule below from gobbling up doctags
      begin: '[ ]*(?=(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):)',
      end: /(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):/,
      excludeBegin: true,
      relevance: 0
    });
    const ENGLISH_WORD = either(
      // list of common 1 and 2 letter words in English
      "I",
      "a",
      "is",
      "so",
      "us",
      "to",
      "at",
      "if",
      "in",
      "it",
      "on",
      // note: this is not an exhaustive list of contractions, just popular ones
      /[A-Za-z]+['](d|ve|re|ll|t|s|n)/, // contractions - can't we'd they're let's, etc
      /[A-Za-z]+[-][a-z]+/, // `no-way`, etc.
      /[A-Za-z][a-z]{2,}/ // allow capitalized words at beginning of sentences
    );
    // looking like plain text, more likely to be a comment
    mode.contains.push(
      {
        // TODO: how to include ", (, ) without breaking grammars that use these for
        // comment delimiters?
        // begin: /[ ]+([()"]?([A-Za-z'-]{3,}|is|a|I|so|us|[tT][oO]|at|if|in|it|on)[.]?[()":]?([.][ ]|[ ]|\))){3}/
        // ---

        // this tries to find sequences of 3 english words in a row (without any
        // "programming" type syntax) this gives us a strong signal that we've
        // TRULY found a comment - vs perhaps scanning with the wrong language.
        // It's possible to find something that LOOKS like the start of the
        // comment - but then if there is no readable text - good chance it is a
        // false match and not a comment.
        //
        // for a visual example please see:
        // https://github.com/highlightjs/highlight.js/issues/2827

        begin: concat(
          /[ ]+/, // necessary to prevent us gobbling up doctags like /* @author Bob Mcgill */
          '(',
          ENGLISH_WORD,
          /[.]?[:]?([.][ ]|[ ])/,
          '){3}') // look for 3 words in a row
      }
    );
    return mode;
  };
  const C_LINE_COMMENT_MODE = COMMENT('//', '$');
  const C_BLOCK_COMMENT_MODE = COMMENT('/\\*', '\\*/');
  const HASH_COMMENT_MODE = COMMENT('#', '$');
  const NUMBER_MODE = {
    scope: 'number',
    begin: NUMBER_RE,
    relevance: 0
  };
  const C_NUMBER_MODE = {
    scope: 'number',
    begin: C_NUMBER_RE,
    relevance: 0
  };
  const BINARY_NUMBER_MODE = {
    scope: 'number',
    begin: BINARY_NUMBER_RE,
    relevance: 0
  };
  const REGEXP_MODE = {
    scope: "regexp",
    begin: /\/(?=[^/\n]*\/)/,
    end: /\/[gimuy]*/,
    contains: [
      BACKSLASH_ESCAPE,
      {
        begin: /\[/,
        end: /\]/,
        relevance: 0,
        contains: [BACKSLASH_ESCAPE]
      }
    ]
  };
  const TITLE_MODE = {
    scope: 'title',
    begin: IDENT_RE$1,
    relevance: 0
  };
  const UNDERSCORE_TITLE_MODE = {
    scope: 'title',
    begin: UNDERSCORE_IDENT_RE,
    relevance: 0
  };
  const METHOD_GUARD = {
    // excludes method names from keyword processing
    begin: '\\.\\s*' + UNDERSCORE_IDENT_RE,
    relevance: 0
  };

  /**
   * Adds end same as begin mechanics to a mode
   *
   * Your mode must include at least a single () match group as that first match
   * group is what is used for comparison
   * @param {Partial<Mode>} mode
   */
  const END_SAME_AS_BEGIN = function(mode) {
    return Object.assign(mode,
      {
        /** @type {ModeCallback} */
        'on:begin': (m, resp) => { resp.data._beginMatch = m[1]; },
        /** @type {ModeCallback} */
        'on:end': (m, resp) => { if (resp.data._beginMatch !== m[1]) resp.ignoreMatch(); }
      });
  };

  var MODES$1 = /*#__PURE__*/Object.freeze({
    __proto__: null,
    APOS_STRING_MODE: APOS_STRING_MODE,
    BACKSLASH_ESCAPE: BACKSLASH_ESCAPE,
    BINARY_NUMBER_MODE: BINARY_NUMBER_MODE,
    BINARY_NUMBER_RE: BINARY_NUMBER_RE,
    COMMENT: COMMENT,
    C_BLOCK_COMMENT_MODE: C_BLOCK_COMMENT_MODE,
    C_LINE_COMMENT_MODE: C_LINE_COMMENT_MODE,
    C_NUMBER_MODE: C_NUMBER_MODE,
    C_NUMBER_RE: C_NUMBER_RE,
    END_SAME_AS_BEGIN: END_SAME_AS_BEGIN,
    HASH_COMMENT_MODE: HASH_COMMENT_MODE,
    IDENT_RE: IDENT_RE$1,
    MATCH_NOTHING_RE: MATCH_NOTHING_RE,
    METHOD_GUARD: METHOD_GUARD,
    NUMBER_MODE: NUMBER_MODE,
    NUMBER_RE: NUMBER_RE,
    PHRASAL_WORDS_MODE: PHRASAL_WORDS_MODE,
    QUOTE_STRING_MODE: QUOTE_STRING_MODE,
    REGEXP_MODE: REGEXP_MODE,
    RE_STARTERS_RE: RE_STARTERS_RE,
    SHEBANG: SHEBANG,
    TITLE_MODE: TITLE_MODE,
    UNDERSCORE_IDENT_RE: UNDERSCORE_IDENT_RE,
    UNDERSCORE_TITLE_MODE: UNDERSCORE_TITLE_MODE
  });

  /**
  @typedef {import('highlight.js').CallbackResponse} CallbackResponse
  @typedef {import('highlight.js').CompilerExt} CompilerExt
  */

  // Grammar extensions / plugins
  // See: https://github.com/highlightjs/highlight.js/issues/2833

  // Grammar extensions allow "syntactic sugar" to be added to the grammar modes
  // without requiring any underlying changes to the compiler internals.

  // `compileMatch` being the perfect small example of now allowing a grammar
  // author to write `match` when they desire to match a single expression rather
  // than being forced to use `begin`.  The extension then just moves `match` into
  // `begin` when it runs.  Ie, no features have been added, but we've just made
  // the experience of writing (and reading grammars) a little bit nicer.

  // ------

  // TODO: We need negative look-behind support to do this properly
  /**
   * Skip a match if it has a preceding dot
   *
   * This is used for `beginKeywords` to prevent matching expressions such as
   * `bob.keyword.do()`. The mode compiler automatically wires this up as a
   * special _internal_ 'on:begin' callback for modes with `beginKeywords`
   * @param {RegExpMatchArray} match
   * @param {CallbackResponse} response
   */
  function skipIfHasPrecedingDot(match, response) {
    const before = match.input[match.index - 1];
    if (before === ".") {
      response.ignoreMatch();
    }
  }

  /**
   *
   * @type {CompilerExt}
   */
  function scopeClassName(mode, _parent) {
    // eslint-disable-next-line no-undefined
    if (mode.className !== undefined) {
      mode.scope = mode.className;
      delete mode.className;
    }
  }

  /**
   * `beginKeywords` syntactic sugar
   * @type {CompilerExt}
   */
  function beginKeywords(mode, parent) {
    if (!parent) return;
    if (!mode.beginKeywords) return;

    // for languages with keywords that include non-word characters checking for
    // a word boundary is not sufficient, so instead we check for a word boundary
    // or whitespace - this does no harm in any case since our keyword engine
    // doesn't allow spaces in keywords anyways and we still check for the boundary
    // first
    mode.begin = '\\b(' + mode.beginKeywords.split(' ').join('|') + ')(?!\\.)(?=\\b|\\s)';
    mode.__beforeBegin = skipIfHasPrecedingDot;
    mode.keywords = mode.keywords || mode.beginKeywords;
    delete mode.beginKeywords;

    // prevents double relevance, the keywords themselves provide
    // relevance, the mode doesn't need to double it
    // eslint-disable-next-line no-undefined
    if (mode.relevance === undefined) mode.relevance = 0;
  }

  /**
   * Allow `illegal` to contain an array of illegal values
   * @type {CompilerExt}
   */
  function compileIllegal(mode, _parent) {
    if (!Array.isArray(mode.illegal)) return;

    mode.illegal = either(...mode.illegal);
  }

  /**
   * `match` to match a single expression for readability
   * @type {CompilerExt}
   */
  function compileMatch(mode, _parent) {
    if (!mode.match) return;
    if (mode.begin || mode.end) throw new Error("begin & end are not supported with match");

    mode.begin = mode.match;
    delete mode.match;
  }

  /**
   * provides the default 1 relevance to all modes
   * @type {CompilerExt}
   */
  function compileRelevance(mode, _parent) {
    // eslint-disable-next-line no-undefined
    if (mode.relevance === undefined) mode.relevance = 1;
  }

  // allow beforeMatch to act as a "qualifier" for the match
  // the full match begin must be [beforeMatch][begin]
  const beforeMatchExt = (mode, parent) => {
    if (!mode.beforeMatch) return;
    // starts conflicts with endsParent which we need to make sure the child
    // rule is not matched multiple times
    if (mode.starts) throw new Error("beforeMatch cannot be used with starts");

    const originalMode = Object.assign({}, mode);
    Object.keys(mode).forEach((key) => { delete mode[key]; });

    mode.keywords = originalMode.keywords;
    mode.begin = concat(originalMode.beforeMatch, lookahead(originalMode.begin));
    mode.starts = {
      relevance: 0,
      contains: [
        Object.assign(originalMode, { endsParent: true })
      ]
    };
    mode.relevance = 0;

    delete originalMode.beforeMatch;
  };

  // keywords that should have no default relevance value
  const COMMON_KEYWORDS = [
    'of',
    'and',
    'for',
    'in',
    'not',
    'or',
    'if',
    'then',
    'parent', // common variable name
    'list', // common variable name
    'value' // common variable name
  ];

  const DEFAULT_KEYWORD_SCOPE = "keyword";

  /**
   * Given raw keywords from a language definition, compile them.
   *
   * @param {string | Record<string,string|string[]> | Array<string>} rawKeywords
   * @param {boolean} caseInsensitive
   */
  function compileKeywords(rawKeywords, caseInsensitive, scopeName = DEFAULT_KEYWORD_SCOPE) {
    /** @type {import("highlight.js/private").KeywordDict} */
    const compiledKeywords = Object.create(null);

    // input can be a string of keywords, an array of keywords, or a object with
    // named keys representing scopeName (which can then point to a string or array)
    if (typeof rawKeywords === 'string') {
      compileList(scopeName, rawKeywords.split(" "));
    } else if (Array.isArray(rawKeywords)) {
      compileList(scopeName, rawKeywords);
    } else {
      Object.keys(rawKeywords).forEach(function(scopeName) {
        // collapse all our objects back into the parent object
        Object.assign(
          compiledKeywords,
          compileKeywords(rawKeywords[scopeName], caseInsensitive, scopeName)
        );
      });
    }
    return compiledKeywords;

    // ---

    /**
     * Compiles an individual list of keywords
     *
     * Ex: "for if when while|5"
     *
     * @param {string} scopeName
     * @param {Array<string>} keywordList
     */
    function compileList(scopeName, keywordList) {
      if (caseInsensitive) {
        keywordList = keywordList.map(x => x.toLowerCase());
      }
      keywordList.forEach(function(keyword) {
        const pair = keyword.split('|');
        compiledKeywords[pair[0]] = [scopeName, scoreForKeyword(pair[0], pair[1])];
      });
    }
  }

  /**
   * Returns the proper score for a given keyword
   *
   * Also takes into account comment keywords, which will be scored 0 UNLESS
   * another score has been manually assigned.
   * @param {string} keyword
   * @param {string} [providedScore]
   */
  function scoreForKeyword(keyword, providedScore) {
    // manual scores always win over common keywords
    // so you can force a score of 1 if you really insist
    if (providedScore) {
      return Number(providedScore);
    }

    return commonKeyword(keyword) ? 0 : 1;
  }

  /**
   * Determines if a given keyword is common or not
   *
   * @param {string} keyword */
  function commonKeyword(keyword) {
    return COMMON_KEYWORDS.includes(keyword.toLowerCase());
  }

  /*

  For the reasoning behind this please see:
  https://github.com/highlightjs/highlight.js/issues/2880#issuecomment-747275419

  */

  /**
   * @type {Record<string, boolean>}
   */
  const seenDeprecations = {};

  /**
   * @param {string} message
   */
  const error = (message) => {
    console.error(message);
  };

  /**
   * @param {string} message
   * @param {any} args
   */
  const warn = (message, ...args) => {
    console.log(`WARN: ${message}`, ...args);
  };

  /**
   * @param {string} version
   * @param {string} message
   */
  const deprecated = (version, message) => {
    if (seenDeprecations[`${version}/${message}`]) return;

    console.log(`Deprecated as of ${version}. ${message}`);
    seenDeprecations[`${version}/${message}`] = true;
  };

  /* eslint-disable no-throw-literal */

  /**
  @typedef {import('highlight.js').CompiledMode} CompiledMode
  */

  const MultiClassError = new Error();

  /**
   * Renumbers labeled scope names to account for additional inner match
   * groups that otherwise would break everything.
   *
   * Lets say we 3 match scopes:
   *
   *   { 1 => ..., 2 => ..., 3 => ... }
   *
   * So what we need is a clean match like this:
   *
   *   (a)(b)(c) => [ "a", "b", "c" ]
   *
   * But this falls apart with inner match groups:
   *
   * (a)(((b)))(c) => ["a", "b", "b", "b", "c" ]
   *
   * Our scopes are now "out of alignment" and we're repeating `b` 3 times.
   * What needs to happen is the numbers are remapped:
   *
   *   { 1 => ..., 2 => ..., 5 => ... }
   *
   * We also need to know that the ONLY groups that should be output
   * are 1, 2, and 5.  This function handles this behavior.
   *
   * @param {CompiledMode} mode
   * @param {Array<RegExp | string>} regexes
   * @param {{key: "beginScope"|"endScope"}} opts
   */
  function remapScopeNames(mode, regexes, { key }) {
    let offset = 0;
    const scopeNames = mode[key];
    /** @type Record<number,boolean> */
    const emit = {};
    /** @type Record<number,string> */
    const positions = {};

    for (let i = 1; i <= regexes.length; i++) {
      positions[i + offset] = scopeNames[i];
      emit[i + offset] = true;
      offset += countMatchGroups(regexes[i - 1]);
    }
    // we use _emit to keep track of which match groups are "top-level" to avoid double
    // output from inside match groups
    mode[key] = positions;
    mode[key]._emit = emit;
    mode[key]._multi = true;
  }

  /**
   * @param {CompiledMode} mode
   */
  function beginMultiClass(mode) {
    if (!Array.isArray(mode.begin)) return;

    if (mode.skip || mode.excludeBegin || mode.returnBegin) {
      error("skip, excludeBegin, returnBegin not compatible with beginScope: {}");
      throw MultiClassError;
    }

    if (typeof mode.beginScope !== "object" || mode.beginScope === null) {
      error("beginScope must be object");
      throw MultiClassError;
    }

    remapScopeNames(mode, mode.begin, { key: "beginScope" });
    mode.begin = _rewriteBackreferences(mode.begin, { joinWith: "" });
  }

  /**
   * @param {CompiledMode} mode
   */
  function endMultiClass(mode) {
    if (!Array.isArray(mode.end)) return;

    if (mode.skip || mode.excludeEnd || mode.returnEnd) {
      error("skip, excludeEnd, returnEnd not compatible with endScope: {}");
      throw MultiClassError;
    }

    if (typeof mode.endScope !== "object" || mode.endScope === null) {
      error("endScope must be object");
      throw MultiClassError;
    }

    remapScopeNames(mode, mode.end, { key: "endScope" });
    mode.end = _rewriteBackreferences(mode.end, { joinWith: "" });
  }

  /**
   * this exists only to allow `scope: {}` to be used beside `match:`
   * Otherwise `beginScope` would necessary and that would look weird

    {
      match: [ /def/, /\w+/ ]
      scope: { 1: "keyword" , 2: "title" }
    }

   * @param {CompiledMode} mode
   */
  function scopeSugar(mode) {
    if (mode.scope && typeof mode.scope === "object" && mode.scope !== null) {
      mode.beginScope = mode.scope;
      delete mode.scope;
    }
  }

  /**
   * @param {CompiledMode} mode
   */
  function MultiClass(mode) {
    scopeSugar(mode);

    if (typeof mode.beginScope === "string") {
      mode.beginScope = { _wrap: mode.beginScope };
    }
    if (typeof mode.endScope === "string") {
      mode.endScope = { _wrap: mode.endScope };
    }

    beginMultiClass(mode);
    endMultiClass(mode);
  }

  /**
  @typedef {import('highlight.js').Mode} Mode
  @typedef {import('highlight.js').CompiledMode} CompiledMode
  @typedef {import('highlight.js').Language} Language
  @typedef {import('highlight.js').HLJSPlugin} HLJSPlugin
  @typedef {import('highlight.js').CompiledLanguage} CompiledLanguage
  */

  // compilation

  /**
   * Compiles a language definition result
   *
   * Given the raw result of a language definition (Language), compiles this so
   * that it is ready for highlighting code.
   * @param {Language} language
   * @returns {CompiledLanguage}
   */
  function compileLanguage(language) {
    /**
     * Builds a regex with the case sensitivity of the current language
     *
     * @param {RegExp | string} value
     * @param {boolean} [global]
     */
    function langRe(value, global) {
      return new RegExp(
        source(value),
        'm'
        + (language.case_insensitive ? 'i' : '')
        + (language.unicodeRegex ? 'u' : '')
        + (global ? 'g' : '')
      );
    }

    /**
      Stores multiple regular expressions and allows you to quickly search for
      them all in a string simultaneously - returning the first match.  It does
      this by creating a huge (a|b|c) regex - each individual item wrapped with ()
      and joined by `|` - using match groups to track position.  When a match is
      found checking which position in the array has content allows us to figure
      out which of the original regexes / match groups triggered the match.

      The match object itself (the result of `Regex.exec`) is returned but also
      enhanced by merging in any meta-data that was registered with the regex.
      This is how we keep track of which mode matched, and what type of rule
      (`illegal`, `begin`, end, etc).
    */
    class MultiRegex {
      constructor() {
        this.matchIndexes = {};
        // @ts-ignore
        this.regexes = [];
        this.matchAt = 1;
        this.position = 0;
      }

      // @ts-ignore
      addRule(re, opts) {
        opts.position = this.position++;
        // @ts-ignore
        this.matchIndexes[this.matchAt] = opts;
        this.regexes.push([opts, re]);
        this.matchAt += countMatchGroups(re) + 1;
      }

      compile() {
        if (this.regexes.length === 0) {
          // avoids the need to check length every time exec is called
          // @ts-ignore
          this.exec = () => null;
        }
        const terminators = this.regexes.map(el => el[1]);
        this.matcherRe = langRe(_rewriteBackreferences(terminators, { joinWith: '|' }), true);
        this.lastIndex = 0;
      }

      /** @param {string} s */
      exec(s) {
        this.matcherRe.lastIndex = this.lastIndex;
        const match = this.matcherRe.exec(s);
        if (!match) { return null; }

        // eslint-disable-next-line no-undefined
        const i = match.findIndex((el, i) => i > 0 && el !== undefined);
        // @ts-ignore
        const matchData = this.matchIndexes[i];
        // trim off any earlier non-relevant match groups (ie, the other regex
        // match groups that make up the multi-matcher)
        match.splice(0, i);

        return Object.assign(match, matchData);
      }
    }

    /*
      Created to solve the key deficiently with MultiRegex - there is no way to
      test for multiple matches at a single location.  Why would we need to do
      that?  In the future a more dynamic engine will allow certain matches to be
      ignored.  An example: if we matched say the 3rd regex in a large group but
      decided to ignore it - we'd need to started testing again at the 4th
      regex... but MultiRegex itself gives us no real way to do that.

      So what this class creates MultiRegexs on the fly for whatever search
      position they are needed.

      NOTE: These additional MultiRegex objects are created dynamically.  For most
      grammars most of the time we will never actually need anything more than the
      first MultiRegex - so this shouldn't have too much overhead.

      Say this is our search group, and we match regex3, but wish to ignore it.

        regex1 | regex2 | regex3 | regex4 | regex5    ' ie, startAt = 0

      What we need is a new MultiRegex that only includes the remaining
      possibilities:

        regex4 | regex5                               ' ie, startAt = 3

      This class wraps all that complexity up in a simple API... `startAt` decides
      where in the array of expressions to start doing the matching. It
      auto-increments, so if a match is found at position 2, then startAt will be
      set to 3.  If the end is reached startAt will return to 0.

      MOST of the time the parser will be setting startAt manually to 0.
    */
    class ResumableMultiRegex {
      constructor() {
        // @ts-ignore
        this.rules = [];
        // @ts-ignore
        this.multiRegexes = [];
        this.count = 0;

        this.lastIndex = 0;
        this.regexIndex = 0;
      }

      // @ts-ignore
      getMatcher(index) {
        if (this.multiRegexes[index]) return this.multiRegexes[index];

        const matcher = new MultiRegex();
        this.rules.slice(index).forEach(([re, opts]) => matcher.addRule(re, opts));
        matcher.compile();
        this.multiRegexes[index] = matcher;
        return matcher;
      }

      resumingScanAtSamePosition() {
        return this.regexIndex !== 0;
      }

      considerAll() {
        this.regexIndex = 0;
      }

      // @ts-ignore
      addRule(re, opts) {
        this.rules.push([re, opts]);
        if (opts.type === "begin") this.count++;
      }

      /** @param {string} s */
      exec(s) {
        const m = this.getMatcher(this.regexIndex);
        m.lastIndex = this.lastIndex;
        let result = m.exec(s);

        // The following is because we have no easy way to say "resume scanning at the
        // existing position but also skip the current rule ONLY". What happens is
        // all prior rules are also skipped which can result in matching the wrong
        // thing. Example of matching "booger":

        // our matcher is [string, "booger", number]
        //
        // ....booger....

        // if "booger" is ignored then we'd really need a regex to scan from the
        // SAME position for only: [string, number] but ignoring "booger" (if it
        // was the first match), a simple resume would scan ahead who knows how
        // far looking only for "number", ignoring potential string matches (or
        // future "booger" matches that might be valid.)

        // So what we do: We execute two matchers, one resuming at the same
        // position, but the second full matcher starting at the position after:

        //     /--- resume first regex match here (for [number])
        //     |/---- full match here for [string, "booger", number]
        //     vv
        // ....booger....

        // Which ever results in a match first is then used. So this 3-4 step
        // process essentially allows us to say "match at this position, excluding
        // a prior rule that was ignored".
        //
        // 1. Match "booger" first, ignore. Also proves that [string] does non match.
        // 2. Resume matching for [number]
        // 3. Match at index + 1 for [string, "booger", number]
        // 4. If #2 and #3 result in matches, which came first?
        if (this.resumingScanAtSamePosition()) {
          if (result && result.index === this.lastIndex) ; else { // use the second matcher result
            const m2 = this.getMatcher(0);
            m2.lastIndex = this.lastIndex + 1;
            result = m2.exec(s);
          }
        }

        if (result) {
          this.regexIndex += result.position + 1;
          if (this.regexIndex === this.count) {
            // wrap-around to considering all matches again
            this.considerAll();
          }
        }

        return result;
      }
    }

    /**
     * Given a mode, builds a huge ResumableMultiRegex that can be used to walk
     * the content and find matches.
     *
     * @param {CompiledMode} mode
     * @returns {ResumableMultiRegex}
     */
    function buildModeRegex(mode) {
      const mm = new ResumableMultiRegex();

      mode.contains.forEach(term => mm.addRule(term.begin, { rule: term, type: "begin" }));

      if (mode.terminatorEnd) {
        mm.addRule(mode.terminatorEnd, { type: "end" });
      }
      if (mode.illegal) {
        mm.addRule(mode.illegal, { type: "illegal" });
      }

      return mm;
    }

    /** skip vs abort vs ignore
     *
     * @skip   - The mode is still entered and exited normally (and contains rules apply),
     *           but all content is held and added to the parent buffer rather than being
     *           output when the mode ends.  Mostly used with `sublanguage` to build up
     *           a single large buffer than can be parsed by sublanguage.
     *
     *             - The mode begin ands ends normally.
     *             - Content matched is added to the parent mode buffer.
     *             - The parser cursor is moved forward normally.
     *
     * @abort  - A hack placeholder until we have ignore.  Aborts the mode (as if it
     *           never matched) but DOES NOT continue to match subsequent `contains`
     *           modes.  Abort is bad/suboptimal because it can result in modes
     *           farther down not getting applied because an earlier rule eats the
     *           content but then aborts.
     *
     *             - The mode does not begin.
     *             - Content matched by `begin` is added to the mode buffer.
     *             - The parser cursor is moved forward accordingly.
     *
     * @ignore - Ignores the mode (as if it never matched) and continues to match any
     *           subsequent `contains` modes.  Ignore isn't technically possible with
     *           the current parser implementation.
     *
     *             - The mode does not begin.
     *             - Content matched by `begin` is ignored.
     *             - The parser cursor is not moved forward.
     */

    /**
     * Compiles an individual mode
     *
     * This can raise an error if the mode contains certain detectable known logic
     * issues.
     * @param {Mode} mode
     * @param {CompiledMode | null} [parent]
     * @returns {CompiledMode | never}
     */
    function compileMode(mode, parent) {
      const cmode = /** @type CompiledMode */ (mode);
      if (mode.isCompiled) return cmode;

      [
        scopeClassName,
        // do this early so compiler extensions generally don't have to worry about
        // the distinction between match/begin
        compileMatch,
        MultiClass,
        beforeMatchExt
      ].forEach(ext => ext(mode, parent));

      language.compilerExtensions.forEach(ext => ext(mode, parent));

      // __beforeBegin is considered private API, internal use only
      mode.__beforeBegin = null;

      [
        beginKeywords,
        // do this later so compiler extensions that come earlier have access to the
        // raw array if they wanted to perhaps manipulate it, etc.
        compileIllegal,
        // default to 1 relevance if not specified
        compileRelevance
      ].forEach(ext => ext(mode, parent));

      mode.isCompiled = true;

      let keywordPattern = null;
      if (typeof mode.keywords === "object" && mode.keywords.$pattern) {
        // we need a copy because keywords might be compiled multiple times
        // so we can't go deleting $pattern from the original on the first
        // pass
        mode.keywords = Object.assign({}, mode.keywords);
        keywordPattern = mode.keywords.$pattern;
        delete mode.keywords.$pattern;
      }
      keywordPattern = keywordPattern || /\w+/;

      if (mode.keywords) {
        mode.keywords = compileKeywords(mode.keywords, language.case_insensitive);
      }

      cmode.keywordPatternRe = langRe(keywordPattern, true);

      if (parent) {
        if (!mode.begin) mode.begin = /\B|\b/;
        cmode.beginRe = langRe(cmode.begin);
        if (!mode.end && !mode.endsWithParent) mode.end = /\B|\b/;
        if (mode.end) cmode.endRe = langRe(cmode.end);
        cmode.terminatorEnd = source(cmode.end) || '';
        if (mode.endsWithParent && parent.terminatorEnd) {
          cmode.terminatorEnd += (mode.end ? '|' : '') + parent.terminatorEnd;
        }
      }
      if (mode.illegal) cmode.illegalRe = langRe(/** @type {RegExp | string} */ (mode.illegal));
      if (!mode.contains) mode.contains = [];

      mode.contains = [].concat(...mode.contains.map(function(c) {
        return expandOrCloneMode(c === 'self' ? mode : c);
      }));
      mode.contains.forEach(function(c) { compileMode(/** @type Mode */ (c), cmode); });

      if (mode.starts) {
        compileMode(mode.starts, parent);
      }

      cmode.matcher = buildModeRegex(cmode);
      return cmode;
    }

    if (!language.compilerExtensions) language.compilerExtensions = [];

    // self is not valid at the top-level
    if (language.contains && language.contains.includes('self')) {
      throw new Error("ERR: contains `self` is not supported at the top-level of a language.  See documentation.");
    }

    // we need a null object, which inherit will guarantee
    language.classNameAliases = inherit$1(language.classNameAliases || {});

    return compileMode(/** @type Mode */ (language));
  }

  /**
   * Determines if a mode has a dependency on it's parent or not
   *
   * If a mode does have a parent dependency then often we need to clone it if
   * it's used in multiple places so that each copy points to the correct parent,
   * where-as modes without a parent can often safely be re-used at the bottom of
   * a mode chain.
   *
   * @param {Mode | null} mode
   * @returns {boolean} - is there a dependency on the parent?
   * */
  function dependencyOnParent(mode) {
    if (!mode) return false;

    return mode.endsWithParent || dependencyOnParent(mode.starts);
  }

  /**
   * Expands a mode or clones it if necessary
   *
   * This is necessary for modes with parental dependenceis (see notes on
   * `dependencyOnParent`) and for nodes that have `variants` - which must then be
   * exploded into their own individual modes at compile time.
   *
   * @param {Mode} mode
   * @returns {Mode | Mode[]}
   * */
  function expandOrCloneMode(mode) {
    if (mode.variants && !mode.cachedVariants) {
      mode.cachedVariants = mode.variants.map(function(variant) {
        return inherit$1(mode, { variants: null }, variant);
      });
    }

    // EXPAND
    // if we have variants then essentially "replace" the mode with the variants
    // this happens in compileMode, where this function is called from
    if (mode.cachedVariants) {
      return mode.cachedVariants;
    }

    // CLONE
    // if we have dependencies on parents then we need a unique
    // instance of ourselves, so we can be reused with many
    // different parents without issue
    if (dependencyOnParent(mode)) {
      return inherit$1(mode, { starts: mode.starts ? inherit$1(mode.starts) : null });
    }

    if (Object.isFrozen(mode)) {
      return inherit$1(mode);
    }

    // no special dependency issues, just return ourselves
    return mode;
  }

  var version = "11.10.0";

  class HTMLInjectionError extends Error {
    constructor(reason, html) {
      super(reason);
      this.name = "HTMLInjectionError";
      this.html = html;
    }
  }

  /*
  Syntax highlighting with language autodetection.
  https://highlightjs.org/
  */



  /**
  @typedef {import('highlight.js').Mode} Mode
  @typedef {import('highlight.js').CompiledMode} CompiledMode
  @typedef {import('highlight.js').CompiledScope} CompiledScope
  @typedef {import('highlight.js').Language} Language
  @typedef {import('highlight.js').HLJSApi} HLJSApi
  @typedef {import('highlight.js').HLJSPlugin} HLJSPlugin
  @typedef {import('highlight.js').PluginEvent} PluginEvent
  @typedef {import('highlight.js').HLJSOptions} HLJSOptions
  @typedef {import('highlight.js').LanguageFn} LanguageFn
  @typedef {import('highlight.js').HighlightedHTMLElement} HighlightedHTMLElement
  @typedef {import('highlight.js').BeforeHighlightContext} BeforeHighlightContext
  @typedef {import('highlight.js/private').MatchType} MatchType
  @typedef {import('highlight.js/private').KeywordData} KeywordData
  @typedef {import('highlight.js/private').EnhancedMatch} EnhancedMatch
  @typedef {import('highlight.js/private').AnnotatedError} AnnotatedError
  @typedef {import('highlight.js').AutoHighlightResult} AutoHighlightResult
  @typedef {import('highlight.js').HighlightOptions} HighlightOptions
  @typedef {import('highlight.js').HighlightResult} HighlightResult
  */


  const escape = escapeHTML;
  const inherit = inherit$1;
  const NO_MATCH = Symbol("nomatch");
  const MAX_KEYWORD_HITS = 7;

  /**
   * @param {any} hljs - object that is extended (legacy)
   * @returns {HLJSApi}
   */
  const HLJS = function(hljs) {
    // Global internal variables used within the highlight.js library.
    /** @type {Record<string, Language>} */
    const languages = Object.create(null);
    /** @type {Record<string, string>} */
    const aliases = Object.create(null);
    /** @type {HLJSPlugin[]} */
    const plugins = [];

    // safe/production mode - swallows more errors, tries to keep running
    // even if a single syntax or parse hits a fatal error
    let SAFE_MODE = true;
    const LANGUAGE_NOT_FOUND = "Could not find the language '{}', did you forget to load/include a language module?";
    /** @type {Language} */
    const PLAINTEXT_LANGUAGE = { disableAutodetect: true, name: 'Plain text', contains: [] };

    // Global options used when within external APIs. This is modified when
    // calling the `hljs.configure` function.
    /** @type HLJSOptions */
    let options = {
      ignoreUnescapedHTML: false,
      throwUnescapedHTML: false,
      noHighlightRe: /^(no-?highlight)$/i,
      languageDetectRe: /\blang(?:uage)?-([\w-]+)\b/i,
      classPrefix: 'hljs-',
      cssSelector: 'pre code',
      languages: null,
      // beta configuration options, subject to change, welcome to discuss
      // https://github.com/highlightjs/highlight.js/issues/1086
      __emitter: TokenTreeEmitter
    };

    /* Utility functions */

    /**
     * Tests a language name to see if highlighting should be skipped
     * @param {string} languageName
     */
    function shouldNotHighlight(languageName) {
      return options.noHighlightRe.test(languageName);
    }

    /**
     * @param {HighlightedHTMLElement} block - the HTML element to determine language for
     */
    function blockLanguage(block) {
      let classes = block.className + ' ';

      classes += block.parentNode ? block.parentNode.className : '';

      // language-* takes precedence over non-prefixed class names.
      const match = options.languageDetectRe.exec(classes);
      if (match) {
        const language = getLanguage(match[1]);
        if (!language) {
          warn(LANGUAGE_NOT_FOUND.replace("{}", match[1]));
          warn("Falling back to no-highlight mode for this block.", block);
        }
        return language ? match[1] : 'no-highlight';
      }

      return classes
        .split(/\s+/)
        .find((_class) => shouldNotHighlight(_class) || getLanguage(_class));
    }

    /**
     * Core highlighting function.
     *
     * OLD API
     * highlight(lang, code, ignoreIllegals, continuation)
     *
     * NEW API
     * highlight(code, {lang, ignoreIllegals})
     *
     * @param {string} codeOrLanguageName - the language to use for highlighting
     * @param {string | HighlightOptions} optionsOrCode - the code to highlight
     * @param {boolean} [ignoreIllegals] - whether to ignore illegal matches, default is to bail
     *
     * @returns {HighlightResult} Result - an object that represents the result
     * @property {string} language - the language name
     * @property {number} relevance - the relevance score
     * @property {string} value - the highlighted HTML code
     * @property {string} code - the original raw code
     * @property {CompiledMode} top - top of the current mode stack
     * @property {boolean} illegal - indicates whether any illegal matches were found
    */
    function highlight(codeOrLanguageName, optionsOrCode, ignoreIllegals) {
      let code = "";
      let languageName = "";
      if (typeof optionsOrCode === "object") {
        code = codeOrLanguageName;
        ignoreIllegals = optionsOrCode.ignoreIllegals;
        languageName = optionsOrCode.language;
      } else {
        // old API
        deprecated("10.7.0", "highlight(lang, code, ...args) has been deprecated.");
        deprecated("10.7.0", "Please use highlight(code, options) instead.\nhttps://github.com/highlightjs/highlight.js/issues/2277");
        languageName = codeOrLanguageName;
        code = optionsOrCode;
      }

      // https://github.com/highlightjs/highlight.js/issues/3149
      // eslint-disable-next-line no-undefined
      if (ignoreIllegals === undefined) { ignoreIllegals = true; }

      /** @type {BeforeHighlightContext} */
      const context = {
        code,
        language: languageName
      };
      // the plugin can change the desired language or the code to be highlighted
      // just be changing the object it was passed
      fire("before:highlight", context);

      // a before plugin can usurp the result completely by providing it's own
      // in which case we don't even need to call highlight
      const result = context.result
        ? context.result
        : _highlight(context.language, context.code, ignoreIllegals);

      result.code = context.code;
      // the plugin can change anything in result to suite it
      fire("after:highlight", result);

      return result;
    }

    /**
     * private highlight that's used internally and does not fire callbacks
     *
     * @param {string} languageName - the language to use for highlighting
     * @param {string} codeToHighlight - the code to highlight
     * @param {boolean?} [ignoreIllegals] - whether to ignore illegal matches, default is to bail
     * @param {CompiledMode?} [continuation] - current continuation mode, if any
     * @returns {HighlightResult} - result of the highlight operation
    */
    function _highlight(languageName, codeToHighlight, ignoreIllegals, continuation) {
      const keywordHits = Object.create(null);

      /**
       * Return keyword data if a match is a keyword
       * @param {CompiledMode} mode - current mode
       * @param {string} matchText - the textual match
       * @returns {KeywordData | false}
       */
      function keywordData(mode, matchText) {
        return mode.keywords[matchText];
      }

      function processKeywords() {
        if (!top.keywords) {
          emitter.addText(modeBuffer);
          return;
        }

        let lastIndex = 0;
        top.keywordPatternRe.lastIndex = 0;
        let match = top.keywordPatternRe.exec(modeBuffer);
        let buf = "";

        while (match) {
          buf += modeBuffer.substring(lastIndex, match.index);
          const word = language.case_insensitive ? match[0].toLowerCase() : match[0];
          const data = keywordData(top, word);
          if (data) {
            const [kind, keywordRelevance] = data;
            emitter.addText(buf);
            buf = "";

            keywordHits[word] = (keywordHits[word] || 0) + 1;
            if (keywordHits[word] <= MAX_KEYWORD_HITS) relevance += keywordRelevance;
            if (kind.startsWith("_")) {
              // _ implied for relevance only, do not highlight
              // by applying a class name
              buf += match[0];
            } else {
              const cssClass = language.classNameAliases[kind] || kind;
              emitKeyword(match[0], cssClass);
            }
          } else {
            buf += match[0];
          }
          lastIndex = top.keywordPatternRe.lastIndex;
          match = top.keywordPatternRe.exec(modeBuffer);
        }
        buf += modeBuffer.substring(lastIndex);
        emitter.addText(buf);
      }

      function processSubLanguage() {
        if (modeBuffer === "") return;
        /** @type HighlightResult */
        let result = null;

        if (typeof top.subLanguage === 'string') {
          if (!languages[top.subLanguage]) {
            emitter.addText(modeBuffer);
            return;
          }
          result = _highlight(top.subLanguage, modeBuffer, true, continuations[top.subLanguage]);
          continuations[top.subLanguage] = /** @type {CompiledMode} */ (result._top);
        } else {
          result = highlightAuto(modeBuffer, top.subLanguage.length ? top.subLanguage : null);
        }

        // Counting embedded language score towards the host language may be disabled
        // with zeroing the containing mode relevance. Use case in point is Markdown that
        // allows XML everywhere and makes every XML snippet to have a much larger Markdown
        // score.
        if (top.relevance > 0) {
          relevance += result.relevance;
        }
        emitter.__addSublanguage(result._emitter, result.language);
      }

      function processBuffer() {
        if (top.subLanguage != null) {
          processSubLanguage();
        } else {
          processKeywords();
        }
        modeBuffer = '';
      }

      /**
       * @param {string} text
       * @param {string} scope
       */
      function emitKeyword(keyword, scope) {
        if (keyword === "") return;

        emitter.startScope(scope);
        emitter.addText(keyword);
        emitter.endScope();
      }

      /**
       * @param {CompiledScope} scope
       * @param {RegExpMatchArray} match
       */
      function emitMultiClass(scope, match) {
        let i = 1;
        const max = match.length - 1;
        while (i <= max) {
          if (!scope._emit[i]) { i++; continue; }
          const klass = language.classNameAliases[scope[i]] || scope[i];
          const text = match[i];
          if (klass) {
            emitKeyword(text, klass);
          } else {
            modeBuffer = text;
            processKeywords();
            modeBuffer = "";
          }
          i++;
        }
      }

      /**
       * @param {CompiledMode} mode - new mode to start
       * @param {RegExpMatchArray} match
       */
      function startNewMode(mode, match) {
        if (mode.scope && typeof mode.scope === "string") {
          emitter.openNode(language.classNameAliases[mode.scope] || mode.scope);
        }
        if (mode.beginScope) {
          // beginScope just wraps the begin match itself in a scope
          if (mode.beginScope._wrap) {
            emitKeyword(modeBuffer, language.classNameAliases[mode.beginScope._wrap] || mode.beginScope._wrap);
            modeBuffer = "";
          } else if (mode.beginScope._multi) {
            // at this point modeBuffer should just be the match
            emitMultiClass(mode.beginScope, match);
            modeBuffer = "";
          }
        }

        top = Object.create(mode, { parent: { value: top } });
        return top;
      }

      /**
       * @param {CompiledMode } mode - the mode to potentially end
       * @param {RegExpMatchArray} match - the latest match
       * @param {string} matchPlusRemainder - match plus remainder of content
       * @returns {CompiledMode | void} - the next mode, or if void continue on in current mode
       */
      function endOfMode(mode, match, matchPlusRemainder) {
        let matched = startsWith(mode.endRe, matchPlusRemainder);

        if (matched) {
          if (mode["on:end"]) {
            const resp = new Response(mode);
            mode["on:end"](match, resp);
            if (resp.isMatchIgnored) matched = false;
          }

          if (matched) {
            while (mode.endsParent && mode.parent) {
              mode = mode.parent;
            }
            return mode;
          }
        }
        // even if on:end fires an `ignore` it's still possible
        // that we might trigger the end node because of a parent mode
        if (mode.endsWithParent) {
          return endOfMode(mode.parent, match, matchPlusRemainder);
        }
      }

      /**
       * Handle matching but then ignoring a sequence of text
       *
       * @param {string} lexeme - string containing full match text
       */
      function doIgnore(lexeme) {
        if (top.matcher.regexIndex === 0) {
          // no more regexes to potentially match here, so we move the cursor forward one
          // space
          modeBuffer += lexeme[0];
          return 1;
        } else {
          // no need to move the cursor, we still have additional regexes to try and
          // match at this very spot
          resumeScanAtSamePosition = true;
          return 0;
        }
      }

      /**
       * Handle the start of a new potential mode match
       *
       * @param {EnhancedMatch} match - the current match
       * @returns {number} how far to advance the parse cursor
       */
      function doBeginMatch(match) {
        const lexeme = match[0];
        const newMode = match.rule;

        const resp = new Response(newMode);
        // first internal before callbacks, then the public ones
        const beforeCallbacks = [newMode.__beforeBegin, newMode["on:begin"]];
        for (const cb of beforeCallbacks) {
          if (!cb) continue;
          cb(match, resp);
          if (resp.isMatchIgnored) return doIgnore(lexeme);
        }

        if (newMode.skip) {
          modeBuffer += lexeme;
        } else {
          if (newMode.excludeBegin) {
            modeBuffer += lexeme;
          }
          processBuffer();
          if (!newMode.returnBegin && !newMode.excludeBegin) {
            modeBuffer = lexeme;
          }
        }
        startNewMode(newMode, match);
        return newMode.returnBegin ? 0 : lexeme.length;
      }

      /**
       * Handle the potential end of mode
       *
       * @param {RegExpMatchArray} match - the current match
       */
      function doEndMatch(match) {
        const lexeme = match[0];
        const matchPlusRemainder = codeToHighlight.substring(match.index);

        const endMode = endOfMode(top, match, matchPlusRemainder);
        if (!endMode) { return NO_MATCH; }

        const origin = top;
        if (top.endScope && top.endScope._wrap) {
          processBuffer();
          emitKeyword(lexeme, top.endScope._wrap);
        } else if (top.endScope && top.endScope._multi) {
          processBuffer();
          emitMultiClass(top.endScope, match);
        } else if (origin.skip) {
          modeBuffer += lexeme;
        } else {
          if (!(origin.returnEnd || origin.excludeEnd)) {
            modeBuffer += lexeme;
          }
          processBuffer();
          if (origin.excludeEnd) {
            modeBuffer = lexeme;
          }
        }
        do {
          if (top.scope) {
            emitter.closeNode();
          }
          if (!top.skip && !top.subLanguage) {
            relevance += top.relevance;
          }
          top = top.parent;
        } while (top !== endMode.parent);
        if (endMode.starts) {
          startNewMode(endMode.starts, match);
        }
        return origin.returnEnd ? 0 : lexeme.length;
      }

      function processContinuations() {
        const list = [];
        for (let current = top; current !== language; current = current.parent) {
          if (current.scope) {
            list.unshift(current.scope);
          }
        }
        list.forEach(item => emitter.openNode(item));
      }

      /** @type {{type?: MatchType, index?: number, rule?: Mode}}} */
      let lastMatch = {};

      /**
       *  Process an individual match
       *
       * @param {string} textBeforeMatch - text preceding the match (since the last match)
       * @param {EnhancedMatch} [match] - the match itself
       */
      function processLexeme(textBeforeMatch, match) {
        const lexeme = match && match[0];

        // add non-matched text to the current mode buffer
        modeBuffer += textBeforeMatch;

        if (lexeme == null) {
          processBuffer();
          return 0;
        }

        // we've found a 0 width match and we're stuck, so we need to advance
        // this happens when we have badly behaved rules that have optional matchers to the degree that
        // sometimes they can end up matching nothing at all
        // Ref: https://github.com/highlightjs/highlight.js/issues/2140
        if (lastMatch.type === "begin" && match.type === "end" && lastMatch.index === match.index && lexeme === "") {
          // spit the "skipped" character that our regex choked on back into the output sequence
          modeBuffer += codeToHighlight.slice(match.index, match.index + 1);
          if (!SAFE_MODE) {
            /** @type {AnnotatedError} */
            const err = new Error(`0 width match regex (${languageName})`);
            err.languageName = languageName;
            err.badRule = lastMatch.rule;
            throw err;
          }
          return 1;
        }
        lastMatch = match;

        if (match.type === "begin") {
          return doBeginMatch(match);
        } else if (match.type === "illegal" && !ignoreIllegals) {
          // illegal match, we do not continue processing
          /** @type {AnnotatedError} */
          const err = new Error('Illegal lexeme "' + lexeme + '" for mode "' + (top.scope || '<unnamed>') + '"');
          err.mode = top;
          throw err;
        } else if (match.type === "end") {
          const processed = doEndMatch(match);
          if (processed !== NO_MATCH) {
            return processed;
          }
        }

        // edge case for when illegal matches $ (end of line) which is technically
        // a 0 width match but not a begin/end match so it's not caught by the
        // first handler (when ignoreIllegals is true)
        if (match.type === "illegal" && lexeme === "") {
          // advance so we aren't stuck in an infinite loop
          return 1;
        }

        // infinite loops are BAD, this is a last ditch catch all. if we have a
        // decent number of iterations yet our index (cursor position in our
        // parsing) still 3x behind our index then something is very wrong
        // so we bail
        if (iterations > 100000 && iterations > match.index * 3) {
          const err = new Error('potential infinite loop, way more iterations than matches');
          throw err;
        }

        /*
        Why might be find ourselves here?  An potential end match that was
        triggered but could not be completed.  IE, `doEndMatch` returned NO_MATCH.
        (this could be because a callback requests the match be ignored, etc)

        This causes no real harm other than stopping a few times too many.
        */

        modeBuffer += lexeme;
        return lexeme.length;
      }

      const language = getLanguage(languageName);
      if (!language) {
        error(LANGUAGE_NOT_FOUND.replace("{}", languageName));
        throw new Error('Unknown language: "' + languageName + '"');
      }

      const md = compileLanguage(language);
      let result = '';
      /** @type {CompiledMode} */
      let top = continuation || md;
      /** @type Record<string,CompiledMode> */
      const continuations = {}; // keep continuations for sub-languages
      const emitter = new options.__emitter(options);
      processContinuations();
      let modeBuffer = '';
      let relevance = 0;
      let index = 0;
      let iterations = 0;
      let resumeScanAtSamePosition = false;

      try {
        if (!language.__emitTokens) {
          top.matcher.considerAll();

          for (;;) {
            iterations++;
            if (resumeScanAtSamePosition) {
              // only regexes not matched previously will now be
              // considered for a potential match
              resumeScanAtSamePosition = false;
            } else {
              top.matcher.considerAll();
            }
            top.matcher.lastIndex = index;

            const match = top.matcher.exec(codeToHighlight);
            // console.log("match", match[0], match.rule && match.rule.begin)

            if (!match) break;

            const beforeMatch = codeToHighlight.substring(index, match.index);
            const processedCount = processLexeme(beforeMatch, match);
            index = match.index + processedCount;
          }
          processLexeme(codeToHighlight.substring(index));
        } else {
          language.__emitTokens(codeToHighlight, emitter);
        }

        emitter.finalize();
        result = emitter.toHTML();

        return {
          language: languageName,
          value: result,
          relevance,
          illegal: false,
          _emitter: emitter,
          _top: top
        };
      } catch (err) {
        if (err.message && err.message.includes('Illegal')) {
          return {
            language: languageName,
            value: escape(codeToHighlight),
            illegal: true,
            relevance: 0,
            _illegalBy: {
              message: err.message,
              index,
              context: codeToHighlight.slice(index - 100, index + 100),
              mode: err.mode,
              resultSoFar: result
            },
            _emitter: emitter
          };
        } else if (SAFE_MODE) {
          return {
            language: languageName,
            value: escape(codeToHighlight),
            illegal: false,
            relevance: 0,
            errorRaised: err,
            _emitter: emitter,
            _top: top
          };
        } else {
          throw err;
        }
      }
    }

    /**
     * returns a valid highlight result, without actually doing any actual work,
     * auto highlight starts with this and it's possible for small snippets that
     * auto-detection may not find a better match
     * @param {string} code
     * @returns {HighlightResult}
     */
    function justTextHighlightResult(code) {
      const result = {
        value: escape(code),
        illegal: false,
        relevance: 0,
        _top: PLAINTEXT_LANGUAGE,
        _emitter: new options.__emitter(options)
      };
      result._emitter.addText(code);
      return result;
    }

    /**
    Highlighting with language detection. Accepts a string with the code to
    highlight. Returns an object with the following properties:

    - language (detected language)
    - relevance (int)
    - value (an HTML string with highlighting markup)
    - secondBest (object with the same structure for second-best heuristically
      detected language, may be absent)

      @param {string} code
      @param {Array<string>} [languageSubset]
      @returns {AutoHighlightResult}
    */
    function highlightAuto(code, languageSubset) {
      languageSubset = languageSubset || options.languages || Object.keys(languages);
      const plaintext = justTextHighlightResult(code);

      const results = languageSubset.filter(getLanguage).filter(autoDetection).map(name =>
        _highlight(name, code, false)
      );
      results.unshift(plaintext); // plaintext is always an option

      const sorted = results.sort((a, b) => {
        // sort base on relevance
        if (a.relevance !== b.relevance) return b.relevance - a.relevance;

        // always award the tie to the base language
        // ie if C++ and Arduino are tied, it's more likely to be C++
        if (a.language && b.language) {
          if (getLanguage(a.language).supersetOf === b.language) {
            return 1;
          } else if (getLanguage(b.language).supersetOf === a.language) {
            return -1;
          }
        }

        // otherwise say they are equal, which has the effect of sorting on
        // relevance while preserving the original ordering - which is how ties
        // have historically been settled, ie the language that comes first always
        // wins in the case of a tie
        return 0;
      });

      const [best, secondBest] = sorted;

      /** @type {AutoHighlightResult} */
      const result = best;
      result.secondBest = secondBest;

      return result;
    }

    /**
     * Builds new class name for block given the language name
     *
     * @param {HTMLElement} element
     * @param {string} [currentLang]
     * @param {string} [resultLang]
     */
    function updateClassName(element, currentLang, resultLang) {
      const language = (currentLang && aliases[currentLang]) || resultLang;

      element.classList.add("hljs");
      element.classList.add(`language-${language}`);
    }

    /**
     * Applies highlighting to a DOM node containing code.
     *
     * @param {HighlightedHTMLElement} element - the HTML element to highlight
    */
    function highlightElement(element) {
      /** @type HTMLElement */
      let node = null;
      const language = blockLanguage(element);

      if (shouldNotHighlight(language)) return;

      fire("before:highlightElement",
        { el: element, language });

      if (element.dataset.highlighted) {
        console.log("Element previously highlighted. To highlight again, first unset `dataset.highlighted`.", element);
        return;
      }

      // we should be all text, no child nodes (unescaped HTML) - this is possibly
      // an HTML injection attack - it's likely too late if this is already in
      // production (the code has likely already done its damage by the time
      // we're seeing it)... but we yell loudly about this so that hopefully it's
      // more likely to be caught in development before making it to production
      if (element.children.length > 0) {
        if (!options.ignoreUnescapedHTML) {
          console.warn("One of your code blocks includes unescaped HTML. This is a potentially serious security risk.");
          console.warn("https://github.com/highlightjs/highlight.js/wiki/security");
          console.warn("The element with unescaped HTML:");
          console.warn(element);
        }
        if (options.throwUnescapedHTML) {
          const err = new HTMLInjectionError(
            "One of your code blocks includes unescaped HTML.",
            element.innerHTML
          );
          throw err;
        }
      }

      node = element;
      const text = node.textContent;
      const result = language ? highlight(text, { language, ignoreIllegals: true }) : highlightAuto(text);

      element.innerHTML = result.value;
      element.dataset.highlighted = "yes";
      updateClassName(element, language, result.language);
      element.result = {
        language: result.language,
        // TODO: remove with version 11.0
        re: result.relevance,
        relevance: result.relevance
      };
      if (result.secondBest) {
        element.secondBest = {
          language: result.secondBest.language,
          relevance: result.secondBest.relevance
        };
      }

      fire("after:highlightElement", { el: element, result, text });
    }

    /**
     * Updates highlight.js global options with the passed options
     *
     * @param {Partial<HLJSOptions>} userOptions
     */
    function configure(userOptions) {
      options = inherit(options, userOptions);
    }

    // TODO: remove v12, deprecated
    const initHighlighting = () => {
      highlightAll();
      deprecated("10.6.0", "initHighlighting() deprecated.  Use highlightAll() now.");
    };

    // TODO: remove v12, deprecated
    function initHighlightingOnLoad() {
      highlightAll();
      deprecated("10.6.0", "initHighlightingOnLoad() deprecated.  Use highlightAll() now.");
    }

    let wantsHighlight = false;

    /**
     * auto-highlights all pre>code elements on the page
     */
    function highlightAll() {
      // if we are called too early in the loading process
      if (document.readyState === "loading") {
        wantsHighlight = true;
        return;
      }

      const blocks = document.querySelectorAll(options.cssSelector);
      blocks.forEach(highlightElement);
    }

    function boot() {
      // if a highlight was requested before DOM was loaded, do now
      if (wantsHighlight) highlightAll();
    }

    // make sure we are in the browser environment
    if (typeof window !== 'undefined' && window.addEventListener) {
      window.addEventListener('DOMContentLoaded', boot, false);
    }

    /**
     * Register a language grammar module
     *
     * @param {string} languageName
     * @param {LanguageFn} languageDefinition
     */
    function registerLanguage(languageName, languageDefinition) {
      let lang = null;
      try {
        lang = languageDefinition(hljs);
      } catch (error$1) {
        error("Language definition for '{}' could not be registered.".replace("{}", languageName));
        // hard or soft error
        if (!SAFE_MODE) { throw error$1; } else { error(error$1); }
        // languages that have serious errors are replaced with essentially a
        // "plaintext" stand-in so that the code blocks will still get normal
        // css classes applied to them - and one bad language won't break the
        // entire highlighter
        lang = PLAINTEXT_LANGUAGE;
      }
      // give it a temporary name if it doesn't have one in the meta-data
      if (!lang.name) lang.name = languageName;
      languages[languageName] = lang;
      lang.rawDefinition = languageDefinition.bind(null, hljs);

      if (lang.aliases) {
        registerAliases(lang.aliases, { languageName });
      }
    }

    /**
     * Remove a language grammar module
     *
     * @param {string} languageName
     */
    function unregisterLanguage(languageName) {
      delete languages[languageName];
      for (const alias of Object.keys(aliases)) {
        if (aliases[alias] === languageName) {
          delete aliases[alias];
        }
      }
    }

    /**
     * @returns {string[]} List of language internal names
     */
    function listLanguages() {
      return Object.keys(languages);
    }

    /**
     * @param {string} name - name of the language to retrieve
     * @returns {Language | undefined}
     */
    function getLanguage(name) {
      name = (name || '').toLowerCase();
      return languages[name] || languages[aliases[name]];
    }

    /**
     *
     * @param {string|string[]} aliasList - single alias or list of aliases
     * @param {{languageName: string}} opts
     */
    function registerAliases(aliasList, { languageName }) {
      if (typeof aliasList === 'string') {
        aliasList = [aliasList];
      }
      aliasList.forEach(alias => { aliases[alias.toLowerCase()] = languageName; });
    }

    /**
     * Determines if a given language has auto-detection enabled
     * @param {string} name - name of the language
     */
    function autoDetection(name) {
      const lang = getLanguage(name);
      return lang && !lang.disableAutodetect;
    }

    /**
     * Upgrades the old highlightBlock plugins to the new
     * highlightElement API
     * @param {HLJSPlugin} plugin
     */
    function upgradePluginAPI(plugin) {
      // TODO: remove with v12
      if (plugin["before:highlightBlock"] && !plugin["before:highlightElement"]) {
        plugin["before:highlightElement"] = (data) => {
          plugin["before:highlightBlock"](
            Object.assign({ block: data.el }, data)
          );
        };
      }
      if (plugin["after:highlightBlock"] && !plugin["after:highlightElement"]) {
        plugin["after:highlightElement"] = (data) => {
          plugin["after:highlightBlock"](
            Object.assign({ block: data.el }, data)
          );
        };
      }
    }

    /**
     * @param {HLJSPlugin} plugin
     */
    function addPlugin(plugin) {
      upgradePluginAPI(plugin);
      plugins.push(plugin);
    }

    /**
     * @param {HLJSPlugin} plugin
     */
    function removePlugin(plugin) {
      const index = plugins.indexOf(plugin);
      if (index !== -1) {
        plugins.splice(index, 1);
      }
    }

    /**
     *
     * @param {PluginEvent} event
     * @param {any} args
     */
    function fire(event, args) {
      const cb = event;
      plugins.forEach(function(plugin) {
        if (plugin[cb]) {
          plugin[cb](args);
        }
      });
    }

    /**
     * DEPRECATED
     * @param {HighlightedHTMLElement} el
     */
    function deprecateHighlightBlock(el) {
      deprecated("10.7.0", "highlightBlock will be removed entirely in v12.0");
      deprecated("10.7.0", "Please use highlightElement now.");

      return highlightElement(el);
    }

    /* Interface definition */
    Object.assign(hljs, {
      highlight,
      highlightAuto,
      highlightAll,
      highlightElement,
      // TODO: Remove with v12 API
      highlightBlock: deprecateHighlightBlock,
      configure,
      initHighlighting,
      initHighlightingOnLoad,
      registerLanguage,
      unregisterLanguage,
      listLanguages,
      getLanguage,
      registerAliases,
      autoDetection,
      inherit,
      addPlugin,
      removePlugin
    });

    hljs.debugMode = function() { SAFE_MODE = false; };
    hljs.safeMode = function() { SAFE_MODE = true; };
    hljs.versionString = version;

    hljs.regex = {
      concat: concat,
      lookahead: lookahead,
      either: either,
      optional: optional,
      anyNumberOfTimes: anyNumberOfTimes
    };

    for (const key in MODES$1) {
      // @ts-ignore
      if (typeof MODES$1[key] === "object") {
        // @ts-ignore
        deepFreeze(MODES$1[key]);
      }
    }

    // merge all the modes/regexes into our main object
    Object.assign(hljs, MODES$1);

    return hljs;
  };

  // Other names for the variable may break build script
  const highlight = HLJS({});

  // returns a new instance of the highlighter to be used for extensions
  // check https://github.com/wooorm/lowlight/issues/47
  highlight.newInstance = () => HLJS({});

  /*
  Language: Bash
  Author: vah <vahtenberg@gmail.com>
  Contributrors: Benjamin Pannell <contact@sierrasoftworks.com>
  Website: https://www.gnu.org/software/bash/
  Category: common, scripting
  */

  /** @type LanguageFn */
  function bash(hljs) {
    const regex = hljs.regex;
    const VAR = {};
    const BRACED_VAR = {
      begin: /\$\{/,
      end: /\}/,
      contains: [
        "self",
        {
          begin: /:-/,
          contains: [ VAR ]
        } // default values
      ]
    };
    Object.assign(VAR, {
      className: 'variable',
      variants: [
        { begin: regex.concat(/\$[\w\d#@][\w\d_]*/,
          // negative look-ahead tries to avoid matching patterns that are not
          // Perl at all like $ident$, @ident@, etc.
          `(?![\\w\\d])(?![$])`) },
        BRACED_VAR
      ]
    });

    const SUBST = {
      className: 'subst',
      begin: /\$\(/,
      end: /\)/,
      contains: [ hljs.BACKSLASH_ESCAPE ]
    };
    const COMMENT = hljs.inherit(
      hljs.COMMENT(),
      {
        match: [
          /(^|\s)/,
          /#.*$/
        ],
        scope: {
          2: 'comment'
        }
      }
    );
    const HERE_DOC = {
      begin: /<<-?\s*(?=\w+)/,
      starts: { contains: [
        hljs.END_SAME_AS_BEGIN({
          begin: /(\w+)/,
          end: /(\w+)/,
          className: 'string'
        })
      ] }
    };
    const QUOTE_STRING = {
      className: 'string',
      begin: /"/,
      end: /"/,
      contains: [
        hljs.BACKSLASH_ESCAPE,
        VAR,
        SUBST
      ]
    };
    SUBST.contains.push(QUOTE_STRING);
    const ESCAPED_QUOTE = {
      match: /\\"/
    };
    const APOS_STRING = {
      className: 'string',
      begin: /'/,
      end: /'/
    };
    const ESCAPED_APOS = {
      match: /\\'/
    };
    const ARITHMETIC = {
      begin: /\$?\(\(/,
      end: /\)\)/,
      contains: [
        {
          begin: /\d+#[0-9a-f]+/,
          className: "number"
        },
        hljs.NUMBER_MODE,
        VAR
      ]
    };
    const SH_LIKE_SHELLS = [
      "fish",
      "bash",
      "zsh",
      "sh",
      "csh",
      "ksh",
      "tcsh",
      "dash",
      "scsh",
    ];
    const KNOWN_SHEBANG = hljs.SHEBANG({
      binary: `(${SH_LIKE_SHELLS.join("|")})`,
      relevance: 10
    });
    const FUNCTION = {
      className: 'function',
      begin: /\w[\w\d_]*\s*\(\s*\)\s*\{/,
      returnBegin: true,
      contains: [ hljs.inherit(hljs.TITLE_MODE, { begin: /\w[\w\d_]*/ }) ],
      relevance: 0
    };

    const KEYWORDS = [
      "if",
      "then",
      "else",
      "elif",
      "fi",
      "for",
      "while",
      "until",
      "in",
      "do",
      "done",
      "case",
      "esac",
      "function",
      "select"
    ];

    const LITERALS = [
      "true",
      "false"
    ];

    // to consume paths to prevent keyword matches inside them
    const PATH_MODE = { match: /(\/[a-z._-]+)+/ };

    // http://www.gnu.org/software/bash/manual/html_node/Shell-Builtin-Commands.html
    const SHELL_BUILT_INS = [
      "break",
      "cd",
      "continue",
      "eval",
      "exec",
      "exit",
      "export",
      "getopts",
      "hash",
      "pwd",
      "readonly",
      "return",
      "shift",
      "test",
      "times",
      "trap",
      "umask",
      "unset"
    ];

    const BASH_BUILT_INS = [
      "alias",
      "bind",
      "builtin",
      "caller",
      "command",
      "declare",
      "echo",
      "enable",
      "help",
      "let",
      "local",
      "logout",
      "mapfile",
      "printf",
      "read",
      "readarray",
      "source",
      "sudo",
      "type",
      "typeset",
      "ulimit",
      "unalias"
    ];

    const ZSH_BUILT_INS = [
      "autoload",
      "bg",
      "bindkey",
      "bye",
      "cap",
      "chdir",
      "clone",
      "comparguments",
      "compcall",
      "compctl",
      "compdescribe",
      "compfiles",
      "compgroups",
      "compquote",
      "comptags",
      "comptry",
      "compvalues",
      "dirs",
      "disable",
      "disown",
      "echotc",
      "echoti",
      "emulate",
      "fc",
      "fg",
      "float",
      "functions",
      "getcap",
      "getln",
      "history",
      "integer",
      "jobs",
      "kill",
      "limit",
      "log",
      "noglob",
      "popd",
      "print",
      "pushd",
      "pushln",
      "rehash",
      "sched",
      "setcap",
      "setopt",
      "stat",
      "suspend",
      "ttyctl",
      "unfunction",
      "unhash",
      "unlimit",
      "unsetopt",
      "vared",
      "wait",
      "whence",
      "where",
      "which",
      "zcompile",
      "zformat",
      "zftp",
      "zle",
      "zmodload",
      "zparseopts",
      "zprof",
      "zpty",
      "zregexparse",
      "zsocket",
      "zstyle",
      "ztcp"
    ];

    const GNU_CORE_UTILS = [
      "chcon",
      "chgrp",
      "chown",
      "chmod",
      "cp",
      "dd",
      "df",
      "dir",
      "dircolors",
      "ln",
      "ls",
      "mkdir",
      "mkfifo",
      "mknod",
      "mktemp",
      "mv",
      "realpath",
      "rm",
      "rmdir",
      "shred",
      "sync",
      "touch",
      "truncate",
      "vdir",
      "b2sum",
      "base32",
      "base64",
      "cat",
      "cksum",
      "comm",
      "csplit",
      "cut",
      "expand",
      "fmt",
      "fold",
      "head",
      "join",
      "md5sum",
      "nl",
      "numfmt",
      "od",
      "paste",
      "ptx",
      "pr",
      "sha1sum",
      "sha224sum",
      "sha256sum",
      "sha384sum",
      "sha512sum",
      "shuf",
      "sort",
      "split",
      "sum",
      "tac",
      "tail",
      "tr",
      "tsort",
      "unexpand",
      "uniq",
      "wc",
      "arch",
      "basename",
      "chroot",
      "date",
      "dirname",
      "du",
      "echo",
      "env",
      "expr",
      "factor",
      // "false", // keyword literal already
      "groups",
      "hostid",
      "id",
      "link",
      "logname",
      "nice",
      "nohup",
      "nproc",
      "pathchk",
      "pinky",
      "printenv",
      "printf",
      "pwd",
      "readlink",
      "runcon",
      "seq",
      "sleep",
      "stat",
      "stdbuf",
      "stty",
      "tee",
      "test",
      "timeout",
      // "true", // keyword literal already
      "tty",
      "uname",
      "unlink",
      "uptime",
      "users",
      "who",
      "whoami",
      "yes"
    ];

    return {
      name: 'Bash',
      aliases: [
        'sh',
        'zsh'
      ],
      keywords: {
        $pattern: /\b[a-z][a-z0-9._-]+\b/,
        keyword: KEYWORDS,
        literal: LITERALS,
        built_in: [
          ...SHELL_BUILT_INS,
          ...BASH_BUILT_INS,
          // Shell modifiers
          "set",
          "shopt",
          ...ZSH_BUILT_INS,
          ...GNU_CORE_UTILS
        ]
      },
      contains: [
        KNOWN_SHEBANG, // to catch known shells and boost relevancy
        hljs.SHEBANG(), // to catch unknown shells but still highlight the shebang
        FUNCTION,
        ARITHMETIC,
        COMMENT,
        HERE_DOC,
        PATH_MODE,
        QUOTE_STRING,
        ESCAPED_QUOTE,
        APOS_STRING,
        ESCAPED_APOS,
        VAR
      ]
    };
  }

  /*
  Language: C
  Category: common, system
  Website: https://en.wikipedia.org/wiki/C_(programming_language)
  */

  /** @type LanguageFn */
  function c(hljs) {
    const regex = hljs.regex;
    // added for historic reasons because `hljs.C_LINE_COMMENT_MODE` does
    // not include such support nor can we be sure all the grammars depending
    // on it would desire this behavior
    const C_LINE_COMMENT_MODE = hljs.COMMENT('//', '$', { contains: [ { begin: /\\\n/ } ] });
    const DECLTYPE_AUTO_RE = 'decltype\\(auto\\)';
    const NAMESPACE_RE = '[a-zA-Z_]\\w*::';
    const TEMPLATE_ARGUMENT_RE = '<[^<>]+>';
    const FUNCTION_TYPE_RE = '('
      + DECLTYPE_AUTO_RE + '|'
      + regex.optional(NAMESPACE_RE)
      + '[a-zA-Z_]\\w*' + regex.optional(TEMPLATE_ARGUMENT_RE)
    + ')';


    const TYPES = {
      className: 'type',
      variants: [
        { begin: '\\b[a-z\\d_]*_t\\b' },
        { match: /\batomic_[a-z]{3,6}\b/ }
      ]

    };

    // https://en.cppreference.com/w/cpp/language/escape
    // \\ \x \xFF \u2837 \u00323747 \374
    const CHARACTER_ESCAPES = '\\\\(x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4,8}|[0-7]{3}|\\S)';
    const STRINGS = {
      className: 'string',
      variants: [
        {
          begin: '(u8?|U|L)?"',
          end: '"',
          illegal: '\\n',
          contains: [ hljs.BACKSLASH_ESCAPE ]
        },
        {
          begin: '(u8?|U|L)?\'(' + CHARACTER_ESCAPES + "|.)",
          end: '\'',
          illegal: '.'
        },
        hljs.END_SAME_AS_BEGIN({
          begin: /(?:u8?|U|L)?R"([^()\\ ]{0,16})\(/,
          end: /\)([^()\\ ]{0,16})"/
        })
      ]
    };

    const NUMBERS = {
      className: 'number',
      variants: [
        { begin: '\\b(0b[01\']+)' },
        { begin: '(-?)\\b([\\d\']+(\\.[\\d\']*)?|\\.[\\d\']+)((ll|LL|l|L)(u|U)?|(u|U)(ll|LL|l|L)?|f|F|b|B)' },
        { begin: '(-?)(\\b0[xX][a-fA-F0-9\']+|(\\b[\\d\']+(\\.[\\d\']*)?|\\.[\\d\']+)([eE][-+]?[\\d\']+)?)' }
      ],
      relevance: 0
    };

    const PREPROCESSOR = {
      className: 'meta',
      begin: /#\s*[a-z]+\b/,
      end: /$/,
      keywords: { keyword:
          'if else elif endif define undef warning error line '
          + 'pragma _Pragma ifdef ifndef elifdef elifndef include' },
      contains: [
        {
          begin: /\\\n/,
          relevance: 0
        },
        hljs.inherit(STRINGS, { className: 'string' }),
        {
          className: 'string',
          begin: /<.*?>/
        },
        C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE
      ]
    };

    const TITLE_MODE = {
      className: 'title',
      begin: regex.optional(NAMESPACE_RE) + hljs.IDENT_RE,
      relevance: 0
    };

    const FUNCTION_TITLE = regex.optional(NAMESPACE_RE) + hljs.IDENT_RE + '\\s*\\(';

    const C_KEYWORDS = [
      "asm",
      "auto",
      "break",
      "case",
      "continue",
      "default",
      "do",
      "else",
      "enum",
      "extern",
      "for",
      "fortran",
      "goto",
      "if",
      "inline",
      "register",
      "restrict",
      "return",
      "sizeof",
      "typeof",
      "typeof_unqual",
      "struct",
      "switch",
      "typedef",
      "union",
      "volatile",
      "while",
      "_Alignas",
      "_Alignof",
      "_Atomic",
      "_Generic",
      "_Noreturn",
      "_Static_assert",
      "_Thread_local",
      // aliases
      "alignas",
      "alignof",
      "noreturn",
      "static_assert",
      "thread_local",
      // not a C keyword but is, for all intents and purposes, treated exactly like one.
      "_Pragma"
    ];

    const C_TYPES = [
      "float",
      "double",
      "signed",
      "unsigned",
      "int",
      "short",
      "long",
      "char",
      "void",
      "_Bool",
      "_BitInt",
      "_Complex",
      "_Imaginary",
      "_Decimal32",
      "_Decimal64",
      "_Decimal96",
      "_Decimal128",
      "_Decimal64x",
      "_Decimal128x",
      "_Float16",
      "_Float32",
      "_Float64",
      "_Float128",
      "_Float32x",
      "_Float64x",
      "_Float128x",
      // modifiers
      "const",
      "static",
      "constexpr",
      // aliases
      "complex",
      "bool",
      "imaginary"
    ];

    const KEYWORDS = {
      keyword: C_KEYWORDS,
      type: C_TYPES,
      literal: 'true false NULL',
      // TODO: apply hinting work similar to what was done in cpp.js
      built_in: 'std string wstring cin cout cerr clog stdin stdout stderr stringstream istringstream ostringstream '
        + 'auto_ptr deque list queue stack vector map set pair bitset multiset multimap unordered_set '
        + 'unordered_map unordered_multiset unordered_multimap priority_queue make_pair array shared_ptr abort terminate abs acos '
        + 'asin atan2 atan calloc ceil cosh cos exit exp fabs floor fmod fprintf fputs free frexp '
        + 'fscanf future isalnum isalpha iscntrl isdigit isgraph islower isprint ispunct isspace isupper '
        + 'isxdigit tolower toupper labs ldexp log10 log malloc realloc memchr memcmp memcpy memset modf pow '
        + 'printf putchar puts scanf sinh sin snprintf sprintf sqrt sscanf strcat strchr strcmp '
        + 'strcpy strcspn strlen strncat strncmp strncpy strpbrk strrchr strspn strstr tanh tan '
        + 'vfprintf vprintf vsprintf endl initializer_list unique_ptr',
    };

    const EXPRESSION_CONTAINS = [
      PREPROCESSOR,
      TYPES,
      C_LINE_COMMENT_MODE,
      hljs.C_BLOCK_COMMENT_MODE,
      NUMBERS,
      STRINGS
    ];

    const EXPRESSION_CONTEXT = {
      // This mode covers expression context where we can't expect a function
      // definition and shouldn't highlight anything that looks like one:
      // `return some()`, `else if()`, `(x*sum(1, 2))`
      variants: [
        {
          begin: /=/,
          end: /;/
        },
        {
          begin: /\(/,
          end: /\)/
        },
        {
          beginKeywords: 'new throw return else',
          end: /;/
        }
      ],
      keywords: KEYWORDS,
      contains: EXPRESSION_CONTAINS.concat([
        {
          begin: /\(/,
          end: /\)/,
          keywords: KEYWORDS,
          contains: EXPRESSION_CONTAINS.concat([ 'self' ]),
          relevance: 0
        }
      ]),
      relevance: 0
    };

    const FUNCTION_DECLARATION = {
      begin: '(' + FUNCTION_TYPE_RE + '[\\*&\\s]+)+' + FUNCTION_TITLE,
      returnBegin: true,
      end: /[{;=]/,
      excludeEnd: true,
      keywords: KEYWORDS,
      illegal: /[^\w\s\*&:<>.]/,
      contains: [
        { // to prevent it from being confused as the function title
          begin: DECLTYPE_AUTO_RE,
          keywords: KEYWORDS,
          relevance: 0
        },
        {
          begin: FUNCTION_TITLE,
          returnBegin: true,
          contains: [ hljs.inherit(TITLE_MODE, { className: "title.function" }) ],
          relevance: 0
        },
        // allow for multiple declarations, e.g.:
        // extern void f(int), g(char);
        {
          relevance: 0,
          match: /,/
        },
        {
          className: 'params',
          begin: /\(/,
          end: /\)/,
          keywords: KEYWORDS,
          relevance: 0,
          contains: [
            C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE,
            STRINGS,
            NUMBERS,
            TYPES,
            // Count matching parentheses.
            {
              begin: /\(/,
              end: /\)/,
              keywords: KEYWORDS,
              relevance: 0,
              contains: [
                'self',
                C_LINE_COMMENT_MODE,
                hljs.C_BLOCK_COMMENT_MODE,
                STRINGS,
                NUMBERS,
                TYPES
              ]
            }
          ]
        },
        TYPES,
        C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE,
        PREPROCESSOR
      ]
    };

    return {
      name: "C",
      aliases: [ 'h' ],
      keywords: KEYWORDS,
      // Until differentiations are added between `c` and `cpp`, `c` will
      // not be auto-detected to avoid auto-detect conflicts between C and C++
      disableAutodetect: true,
      illegal: '</',
      contains: [].concat(
        EXPRESSION_CONTEXT,
        FUNCTION_DECLARATION,
        EXPRESSION_CONTAINS,
        [
          PREPROCESSOR,
          {
            begin: hljs.IDENT_RE + '::',
            keywords: KEYWORDS
          },
          {
            className: 'class',
            beginKeywords: 'enum class struct union',
            end: /[{;:<>=]/,
            contains: [
              { beginKeywords: "final class struct" },
              hljs.TITLE_MODE
            ]
          }
        ]),
      exports: {
        preprocessor: PREPROCESSOR,
        strings: STRINGS,
        keywords: KEYWORDS
      }
    };
  }

  /*
  Language: C++
  Category: common, system
  Website: https://isocpp.org
  */

  /** @type LanguageFn */
  function cpp(hljs) {
    const regex = hljs.regex;
    // added for historic reasons because `hljs.C_LINE_COMMENT_MODE` does
    // not include such support nor can we be sure all the grammars depending
    // on it would desire this behavior
    const C_LINE_COMMENT_MODE = hljs.COMMENT('//', '$', { contains: [ { begin: /\\\n/ } ] });
    const DECLTYPE_AUTO_RE = 'decltype\\(auto\\)';
    const NAMESPACE_RE = '[a-zA-Z_]\\w*::';
    const TEMPLATE_ARGUMENT_RE = '<[^<>]+>';
    const FUNCTION_TYPE_RE = '(?!struct)('
      + DECLTYPE_AUTO_RE + '|'
      + regex.optional(NAMESPACE_RE)
      + '[a-zA-Z_]\\w*' + regex.optional(TEMPLATE_ARGUMENT_RE)
    + ')';

    const CPP_PRIMITIVE_TYPES = {
      className: 'type',
      begin: '\\b[a-z\\d_]*_t\\b'
    };

    // https://en.cppreference.com/w/cpp/language/escape
    // \\ \x \xFF \u2837 \u00323747 \374
    const CHARACTER_ESCAPES = '\\\\(x[0-9A-Fa-f]{2}|u[0-9A-Fa-f]{4,8}|[0-7]{3}|\\S)';
    const STRINGS = {
      className: 'string',
      variants: [
        {
          begin: '(u8?|U|L)?"',
          end: '"',
          illegal: '\\n',
          contains: [ hljs.BACKSLASH_ESCAPE ]
        },
        {
          begin: '(u8?|U|L)?\'(' + CHARACTER_ESCAPES + '|.)',
          end: '\'',
          illegal: '.'
        },
        hljs.END_SAME_AS_BEGIN({
          begin: /(?:u8?|U|L)?R"([^()\\ ]{0,16})\(/,
          end: /\)([^()\\ ]{0,16})"/
        })
      ]
    };

    const NUMBERS = {
      className: 'number',
      variants: [
        // Floating-point literal.
        { begin:
          "[+-]?(?:" // Leading sign.
            // Decimal.
            + "(?:"
              +"[0-9](?:'?[0-9])*\\.(?:[0-9](?:'?[0-9])*)?"
              + "|\\.[0-9](?:'?[0-9])*"
            + ")(?:[Ee][+-]?[0-9](?:'?[0-9])*)?"
            + "|[0-9](?:'?[0-9])*[Ee][+-]?[0-9](?:'?[0-9])*"
            // Hexadecimal.
            + "|0[Xx](?:"
              +"[0-9A-Fa-f](?:'?[0-9A-Fa-f])*(?:\\.(?:[0-9A-Fa-f](?:'?[0-9A-Fa-f])*)?)?"
              + "|\\.[0-9A-Fa-f](?:'?[0-9A-Fa-f])*"
            + ")[Pp][+-]?[0-9](?:'?[0-9])*"
          + ")(?:" // Literal suffixes.
            + "[Ff](?:16|32|64|128)?"
            + "|(BF|bf)16"
            + "|[Ll]"
            + "|" // Literal suffix is optional.
          + ")"
        },
        // Integer literal.
        { begin:
          "[+-]?\\b(?:" // Leading sign.
            + "0[Bb][01](?:'?[01])*" // Binary.
            + "|0[Xx][0-9A-Fa-f](?:'?[0-9A-Fa-f])*" // Hexadecimal.
            + "|0(?:'?[0-7])*" // Octal or just a lone zero.
            + "|[1-9](?:'?[0-9])*" // Decimal.
          + ")(?:" // Literal suffixes.
            + "[Uu](?:LL?|ll?)"
            + "|[Uu][Zz]?"
            + "|(?:LL?|ll?)[Uu]?"
            + "|[Zz][Uu]"
            + "|" // Literal suffix is optional.
          + ")"
          // Note: there are user-defined literal suffixes too, but perhaps having the custom suffix not part of the
          // literal highlight actually makes it stand out more.
        }
      ],
      relevance: 0
    };

    const PREPROCESSOR = {
      className: 'meta',
      begin: /#\s*[a-z]+\b/,
      end: /$/,
      keywords: { keyword:
          'if else elif endif define undef warning error line '
          + 'pragma _Pragma ifdef ifndef include' },
      contains: [
        {
          begin: /\\\n/,
          relevance: 0
        },
        hljs.inherit(STRINGS, { className: 'string' }),
        {
          className: 'string',
          begin: /<.*?>/
        },
        C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE
      ]
    };

    const TITLE_MODE = {
      className: 'title',
      begin: regex.optional(NAMESPACE_RE) + hljs.IDENT_RE,
      relevance: 0
    };

    const FUNCTION_TITLE = regex.optional(NAMESPACE_RE) + hljs.IDENT_RE + '\\s*\\(';

    // https://en.cppreference.com/w/cpp/keyword
    const RESERVED_KEYWORDS = [
      'alignas',
      'alignof',
      'and',
      'and_eq',
      'asm',
      'atomic_cancel',
      'atomic_commit',
      'atomic_noexcept',
      'auto',
      'bitand',
      'bitor',
      'break',
      'case',
      'catch',
      'class',
      'co_await',
      'co_return',
      'co_yield',
      'compl',
      'concept',
      'const_cast|10',
      'consteval',
      'constexpr',
      'constinit',
      'continue',
      'decltype',
      'default',
      'delete',
      'do',
      'dynamic_cast|10',
      'else',
      'enum',
      'explicit',
      'export',
      'extern',
      'false',
      'final',
      'for',
      'friend',
      'goto',
      'if',
      'import',
      'inline',
      'module',
      'mutable',
      'namespace',
      'new',
      'noexcept',
      'not',
      'not_eq',
      'nullptr',
      'operator',
      'or',
      'or_eq',
      'override',
      'private',
      'protected',
      'public',
      'reflexpr',
      'register',
      'reinterpret_cast|10',
      'requires',
      'return',
      'sizeof',
      'static_assert',
      'static_cast|10',
      'struct',
      'switch',
      'synchronized',
      'template',
      'this',
      'thread_local',
      'throw',
      'transaction_safe',
      'transaction_safe_dynamic',
      'true',
      'try',
      'typedef',
      'typeid',
      'typename',
      'union',
      'using',
      'virtual',
      'volatile',
      'while',
      'xor',
      'xor_eq'
    ];

    // https://en.cppreference.com/w/cpp/keyword
    const RESERVED_TYPES = [
      'bool',
      'char',
      'char16_t',
      'char32_t',
      'char8_t',
      'double',
      'float',
      'int',
      'long',
      'short',
      'void',
      'wchar_t',
      'unsigned',
      'signed',
      'const',
      'static'
    ];

    const TYPE_HINTS = [
      'any',
      'auto_ptr',
      'barrier',
      'binary_semaphore',
      'bitset',
      'complex',
      'condition_variable',
      'condition_variable_any',
      'counting_semaphore',
      'deque',
      'false_type',
      'future',
      'imaginary',
      'initializer_list',
      'istringstream',
      'jthread',
      'latch',
      'lock_guard',
      'multimap',
      'multiset',
      'mutex',
      'optional',
      'ostringstream',
      'packaged_task',
      'pair',
      'promise',
      'priority_queue',
      'queue',
      'recursive_mutex',
      'recursive_timed_mutex',
      'scoped_lock',
      'set',
      'shared_future',
      'shared_lock',
      'shared_mutex',
      'shared_timed_mutex',
      'shared_ptr',
      'stack',
      'string_view',
      'stringstream',
      'timed_mutex',
      'thread',
      'true_type',
      'tuple',
      'unique_lock',
      'unique_ptr',
      'unordered_map',
      'unordered_multimap',
      'unordered_multiset',
      'unordered_set',
      'variant',
      'vector',
      'weak_ptr',
      'wstring',
      'wstring_view'
    ];

    const FUNCTION_HINTS = [
      'abort',
      'abs',
      'acos',
      'apply',
      'as_const',
      'asin',
      'atan',
      'atan2',
      'calloc',
      'ceil',
      'cerr',
      'cin',
      'clog',
      'cos',
      'cosh',
      'cout',
      'declval',
      'endl',
      'exchange',
      'exit',
      'exp',
      'fabs',
      'floor',
      'fmod',
      'forward',
      'fprintf',
      'fputs',
      'free',
      'frexp',
      'fscanf',
      'future',
      'invoke',
      'isalnum',
      'isalpha',
      'iscntrl',
      'isdigit',
      'isgraph',
      'islower',
      'isprint',
      'ispunct',
      'isspace',
      'isupper',
      'isxdigit',
      'labs',
      'launder',
      'ldexp',
      'log',
      'log10',
      'make_pair',
      'make_shared',
      'make_shared_for_overwrite',
      'make_tuple',
      'make_unique',
      'malloc',
      'memchr',
      'memcmp',
      'memcpy',
      'memset',
      'modf',
      'move',
      'pow',
      'printf',
      'putchar',
      'puts',
      'realloc',
      'scanf',
      'sin',
      'sinh',
      'snprintf',
      'sprintf',
      'sqrt',
      'sscanf',
      'std',
      'stderr',
      'stdin',
      'stdout',
      'strcat',
      'strchr',
      'strcmp',
      'strcpy',
      'strcspn',
      'strlen',
      'strncat',
      'strncmp',
      'strncpy',
      'strpbrk',
      'strrchr',
      'strspn',
      'strstr',
      'swap',
      'tan',
      'tanh',
      'terminate',
      'to_underlying',
      'tolower',
      'toupper',
      'vfprintf',
      'visit',
      'vprintf',
      'vsprintf'
    ];

    const LITERALS = [
      'NULL',
      'false',
      'nullopt',
      'nullptr',
      'true'
    ];

    // https://en.cppreference.com/w/cpp/keyword
    const BUILT_IN = [ '_Pragma' ];

    const CPP_KEYWORDS = {
      type: RESERVED_TYPES,
      keyword: RESERVED_KEYWORDS,
      literal: LITERALS,
      built_in: BUILT_IN,
      _type_hints: TYPE_HINTS
    };

    const FUNCTION_DISPATCH = {
      className: 'function.dispatch',
      relevance: 0,
      keywords: {
        // Only for relevance, not highlighting.
        _hint: FUNCTION_HINTS },
      begin: regex.concat(
        /\b/,
        /(?!decltype)/,
        /(?!if)/,
        /(?!for)/,
        /(?!switch)/,
        /(?!while)/,
        hljs.IDENT_RE,
        regex.lookahead(/(<[^<>]+>|)\s*\(/))
    };

    const EXPRESSION_CONTAINS = [
      FUNCTION_DISPATCH,
      PREPROCESSOR,
      CPP_PRIMITIVE_TYPES,
      C_LINE_COMMENT_MODE,
      hljs.C_BLOCK_COMMENT_MODE,
      NUMBERS,
      STRINGS
    ];

    const EXPRESSION_CONTEXT = {
      // This mode covers expression context where we can't expect a function
      // definition and shouldn't highlight anything that looks like one:
      // `return some()`, `else if()`, `(x*sum(1, 2))`
      variants: [
        {
          begin: /=/,
          end: /;/
        },
        {
          begin: /\(/,
          end: /\)/
        },
        {
          beginKeywords: 'new throw return else',
          end: /;/
        }
      ],
      keywords: CPP_KEYWORDS,
      contains: EXPRESSION_CONTAINS.concat([
        {
          begin: /\(/,
          end: /\)/,
          keywords: CPP_KEYWORDS,
          contains: EXPRESSION_CONTAINS.concat([ 'self' ]),
          relevance: 0
        }
      ]),
      relevance: 0
    };

    const FUNCTION_DECLARATION = {
      className: 'function',
      begin: '(' + FUNCTION_TYPE_RE + '[\\*&\\s]+)+' + FUNCTION_TITLE,
      returnBegin: true,
      end: /[{;=]/,
      excludeEnd: true,
      keywords: CPP_KEYWORDS,
      illegal: /[^\w\s\*&:<>.]/,
      contains: [
        { // to prevent it from being confused as the function title
          begin: DECLTYPE_AUTO_RE,
          keywords: CPP_KEYWORDS,
          relevance: 0
        },
        {
          begin: FUNCTION_TITLE,
          returnBegin: true,
          contains: [ TITLE_MODE ],
          relevance: 0
        },
        // needed because we do not have look-behind on the below rule
        // to prevent it from grabbing the final : in a :: pair
        {
          begin: /::/,
          relevance: 0
        },
        // initializers
        {
          begin: /:/,
          endsWithParent: true,
          contains: [
            STRINGS,
            NUMBERS
          ]
        },
        // allow for multiple declarations, e.g.:
        // extern void f(int), g(char);
        {
          relevance: 0,
          match: /,/
        },
        {
          className: 'params',
          begin: /\(/,
          end: /\)/,
          keywords: CPP_KEYWORDS,
          relevance: 0,
          contains: [
            C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE,
            STRINGS,
            NUMBERS,
            CPP_PRIMITIVE_TYPES,
            // Count matching parentheses.
            {
              begin: /\(/,
              end: /\)/,
              keywords: CPP_KEYWORDS,
              relevance: 0,
              contains: [
                'self',
                C_LINE_COMMENT_MODE,
                hljs.C_BLOCK_COMMENT_MODE,
                STRINGS,
                NUMBERS,
                CPP_PRIMITIVE_TYPES
              ]
            }
          ]
        },
        CPP_PRIMITIVE_TYPES,
        C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE,
        PREPROCESSOR
      ]
    };

    return {
      name: 'C++',
      aliases: [
        'cc',
        'c++',
        'h++',
        'hpp',
        'hh',
        'hxx',
        'cxx'
      ],
      keywords: CPP_KEYWORDS,
      illegal: '</',
      classNameAliases: { 'function.dispatch': 'built_in' },
      contains: [].concat(
        EXPRESSION_CONTEXT,
        FUNCTION_DECLARATION,
        FUNCTION_DISPATCH,
        EXPRESSION_CONTAINS,
        [
          PREPROCESSOR,
          { // containers: ie, `vector <int> rooms (9);`
            begin: '\\b(deque|list|queue|priority_queue|pair|stack|vector|map|set|bitset|multiset|multimap|unordered_map|unordered_set|unordered_multiset|unordered_multimap|array|tuple|optional|variant|function)\\s*<(?!<)',
            end: '>',
            keywords: CPP_KEYWORDS,
            contains: [
              'self',
              CPP_PRIMITIVE_TYPES
            ]
          },
          {
            begin: hljs.IDENT_RE + '::',
            keywords: CPP_KEYWORDS
          },
          {
            match: [
              // extra complexity to deal with `enum class` and `enum struct`
              /\b(?:enum(?:\s+(?:class|struct))?|class|struct|union)/,
              /\s+/,
              /\w+/
            ],
            className: {
              1: 'keyword',
              3: 'title.class'
            }
          }
        ])
    };
  }

  /*
  Language: C#
  Author: Jason Diamond <jason@diamond.name>
  Contributor: Nicolas LLOBERA <nllobera@gmail.com>, Pieter Vantorre <pietervantorre@gmail.com>, David Pine <david.pine@microsoft.com>
  Website: https://docs.microsoft.com/dotnet/csharp/
  Category: common
  */

  /** @type LanguageFn */
  function csharp(hljs) {
    const BUILT_IN_KEYWORDS = [
      'bool',
      'byte',
      'char',
      'decimal',
      'delegate',
      'double',
      'dynamic',
      'enum',
      'float',
      'int',
      'long',
      'nint',
      'nuint',
      'object',
      'sbyte',
      'short',
      'string',
      'ulong',
      'uint',
      'ushort'
    ];
    const FUNCTION_MODIFIERS = [
      'public',
      'private',
      'protected',
      'static',
      'internal',
      'protected',
      'abstract',
      'async',
      'extern',
      'override',
      'unsafe',
      'virtual',
      'new',
      'sealed',
      'partial'
    ];
    const LITERAL_KEYWORDS = [
      'default',
      'false',
      'null',
      'true'
    ];
    const NORMAL_KEYWORDS = [
      'abstract',
      'as',
      'base',
      'break',
      'case',
      'catch',
      'class',
      'const',
      'continue',
      'do',
      'else',
      'event',
      'explicit',
      'extern',
      'finally',
      'fixed',
      'for',
      'foreach',
      'goto',
      'if',
      'implicit',
      'in',
      'interface',
      'internal',
      'is',
      'lock',
      'namespace',
      'new',
      'operator',
      'out',
      'override',
      'params',
      'private',
      'protected',
      'public',
      'readonly',
      'record',
      'ref',
      'return',
      'scoped',
      'sealed',
      'sizeof',
      'stackalloc',
      'static',
      'struct',
      'switch',
      'this',
      'throw',
      'try',
      'typeof',
      'unchecked',
      'unsafe',
      'using',
      'virtual',
      'void',
      'volatile',
      'while'
    ];
    const CONTEXTUAL_KEYWORDS = [
      'add',
      'alias',
      'and',
      'ascending',
      'async',
      'await',
      'by',
      'descending',
      'equals',
      'from',
      'get',
      'global',
      'group',
      'init',
      'into',
      'join',
      'let',
      'nameof',
      'not',
      'notnull',
      'on',
      'or',
      'orderby',
      'partial',
      'remove',
      'select',
      'set',
      'unmanaged',
      'value|0',
      'var',
      'when',
      'where',
      'with',
      'yield'
    ];

    const KEYWORDS = {
      keyword: NORMAL_KEYWORDS.concat(CONTEXTUAL_KEYWORDS),
      built_in: BUILT_IN_KEYWORDS,
      literal: LITERAL_KEYWORDS
    };
    const TITLE_MODE = hljs.inherit(hljs.TITLE_MODE, { begin: '[a-zA-Z](\\.?\\w)*' });
    const NUMBERS = {
      className: 'number',
      variants: [
        { begin: '\\b(0b[01\']+)' },
        { begin: '(-?)\\b([\\d\']+(\\.[\\d\']*)?|\\.[\\d\']+)(u|U|l|L|ul|UL|f|F|b|B)' },
        { begin: '(-?)(\\b0[xX][a-fA-F0-9\']+|(\\b[\\d\']+(\\.[\\d\']*)?|\\.[\\d\']+)([eE][-+]?[\\d\']+)?)' }
      ],
      relevance: 0
    };
    const RAW_STRING = {
      className: 'string',
      begin: /"""("*)(?!")(.|\n)*?"""\1/,
      relevance: 1
    };
    const VERBATIM_STRING = {
      className: 'string',
      begin: '@"',
      end: '"',
      contains: [ { begin: '""' } ]
    };
    const VERBATIM_STRING_NO_LF = hljs.inherit(VERBATIM_STRING, { illegal: /\n/ });
    const SUBST = {
      className: 'subst',
      begin: /\{/,
      end: /\}/,
      keywords: KEYWORDS
    };
    const SUBST_NO_LF = hljs.inherit(SUBST, { illegal: /\n/ });
    const INTERPOLATED_STRING = {
      className: 'string',
      begin: /\$"/,
      end: '"',
      illegal: /\n/,
      contains: [
        { begin: /\{\{/ },
        { begin: /\}\}/ },
        hljs.BACKSLASH_ESCAPE,
        SUBST_NO_LF
      ]
    };
    const INTERPOLATED_VERBATIM_STRING = {
      className: 'string',
      begin: /\$@"/,
      end: '"',
      contains: [
        { begin: /\{\{/ },
        { begin: /\}\}/ },
        { begin: '""' },
        SUBST
      ]
    };
    const INTERPOLATED_VERBATIM_STRING_NO_LF = hljs.inherit(INTERPOLATED_VERBATIM_STRING, {
      illegal: /\n/,
      contains: [
        { begin: /\{\{/ },
        { begin: /\}\}/ },
        { begin: '""' },
        SUBST_NO_LF
      ]
    });
    SUBST.contains = [
      INTERPOLATED_VERBATIM_STRING,
      INTERPOLATED_STRING,
      VERBATIM_STRING,
      hljs.APOS_STRING_MODE,
      hljs.QUOTE_STRING_MODE,
      NUMBERS,
      hljs.C_BLOCK_COMMENT_MODE
    ];
    SUBST_NO_LF.contains = [
      INTERPOLATED_VERBATIM_STRING_NO_LF,
      INTERPOLATED_STRING,
      VERBATIM_STRING_NO_LF,
      hljs.APOS_STRING_MODE,
      hljs.QUOTE_STRING_MODE,
      NUMBERS,
      hljs.inherit(hljs.C_BLOCK_COMMENT_MODE, { illegal: /\n/ })
    ];
    const STRING = { variants: [
      RAW_STRING,
      INTERPOLATED_VERBATIM_STRING,
      INTERPOLATED_STRING,
      VERBATIM_STRING,
      hljs.APOS_STRING_MODE,
      hljs.QUOTE_STRING_MODE
    ] };

    const GENERIC_MODIFIER = {
      begin: "<",
      end: ">",
      contains: [
        { beginKeywords: "in out" },
        TITLE_MODE
      ]
    };
    const TYPE_IDENT_RE = hljs.IDENT_RE + '(<' + hljs.IDENT_RE + '(\\s*,\\s*' + hljs.IDENT_RE + ')*>)?(\\[\\])?';
    const AT_IDENTIFIER = {
      // prevents expressions like `@class` from incorrect flagging
      // `class` as a keyword
      begin: "@" + hljs.IDENT_RE,
      relevance: 0
    };

    return {
      name: 'C#',
      aliases: [
        'cs',
        'c#'
      ],
      keywords: KEYWORDS,
      illegal: /::/,
      contains: [
        hljs.COMMENT(
          '///',
          '$',
          {
            returnBegin: true,
            contains: [
              {
                className: 'doctag',
                variants: [
                  {
                    begin: '///',
                    relevance: 0
                  },
                  { begin: '<!--|-->' },
                  {
                    begin: '</?',
                    end: '>'
                  }
                ]
              }
            ]
          }
        ),
        hljs.C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE,
        {
          className: 'meta',
          begin: '#',
          end: '$',
          keywords: { keyword: 'if else elif endif define undef warning error line region endregion pragma checksum' }
        },
        STRING,
        NUMBERS,
        {
          beginKeywords: 'class interface',
          relevance: 0,
          end: /[{;=]/,
          illegal: /[^\s:,]/,
          contains: [
            { beginKeywords: "where class" },
            TITLE_MODE,
            GENERIC_MODIFIER,
            hljs.C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE
          ]
        },
        {
          beginKeywords: 'namespace',
          relevance: 0,
          end: /[{;=]/,
          illegal: /[^\s:]/,
          contains: [
            TITLE_MODE,
            hljs.C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE
          ]
        },
        {
          beginKeywords: 'record',
          relevance: 0,
          end: /[{;=]/,
          illegal: /[^\s:]/,
          contains: [
            TITLE_MODE,
            GENERIC_MODIFIER,
            hljs.C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE
          ]
        },
        {
          // [Attributes("")]
          className: 'meta',
          begin: '^\\s*\\[(?=[\\w])',
          excludeBegin: true,
          end: '\\]',
          excludeEnd: true,
          contains: [
            {
              className: 'string',
              begin: /"/,
              end: /"/
            }
          ]
        },
        {
          // Expression keywords prevent 'keyword Name(...)' from being
          // recognized as a function definition
          beginKeywords: 'new return throw await else',
          relevance: 0
        },
        {
          className: 'function',
          begin: '(' + TYPE_IDENT_RE + '\\s+)+' + hljs.IDENT_RE + '\\s*(<[^=]+>\\s*)?\\(',
          returnBegin: true,
          end: /\s*[{;=]/,
          excludeEnd: true,
          keywords: KEYWORDS,
          contains: [
            // prevents these from being highlighted `title`
            {
              beginKeywords: FUNCTION_MODIFIERS.join(" "),
              relevance: 0
            },
            {
              begin: hljs.IDENT_RE + '\\s*(<[^=]+>\\s*)?\\(',
              returnBegin: true,
              contains: [
                hljs.TITLE_MODE,
                GENERIC_MODIFIER
              ],
              relevance: 0
            },
            { match: /\(\)/ },
            {
              className: 'params',
              begin: /\(/,
              end: /\)/,
              excludeBegin: true,
              excludeEnd: true,
              keywords: KEYWORDS,
              relevance: 0,
              contains: [
                STRING,
                NUMBERS,
                hljs.C_BLOCK_COMMENT_MODE
              ]
            },
            hljs.C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE
          ]
        },
        AT_IDENTIFIER
      ]
    };
  }

  const MODES = (hljs) => {
    return {
      IMPORTANT: {
        scope: 'meta',
        begin: '!important'
      },
      BLOCK_COMMENT: hljs.C_BLOCK_COMMENT_MODE,
      HEXCOLOR: {
        scope: 'number',
        begin: /#(([0-9a-fA-F]{3,4})|(([0-9a-fA-F]{2}){3,4}))\b/
      },
      FUNCTION_DISPATCH: {
        className: "built_in",
        begin: /[\w-]+(?=\()/
      },
      ATTRIBUTE_SELECTOR_MODE: {
        scope: 'selector-attr',
        begin: /\[/,
        end: /\]/,
        illegal: '$',
        contains: [
          hljs.APOS_STRING_MODE,
          hljs.QUOTE_STRING_MODE
        ]
      },
      CSS_NUMBER_MODE: {
        scope: 'number',
        begin: hljs.NUMBER_RE + '(' +
          '%|em|ex|ch|rem' +
          '|vw|vh|vmin|vmax' +
          '|cm|mm|in|pt|pc|px' +
          '|deg|grad|rad|turn' +
          '|s|ms' +
          '|Hz|kHz' +
          '|dpi|dpcm|dppx' +
          ')?',
        relevance: 0
      },
      CSS_VARIABLE: {
        className: "attr",
        begin: /--[A-Za-z_][A-Za-z0-9_-]*/
      }
    };
  };

  const HTML_TAGS = [
    'a',
    'abbr',
    'address',
    'article',
    'aside',
    'audio',
    'b',
    'blockquote',
    'body',
    'button',
    'canvas',
    'caption',
    'cite',
    'code',
    'dd',
    'del',
    'details',
    'dfn',
    'div',
    'dl',
    'dt',
    'em',
    'fieldset',
    'figcaption',
    'figure',
    'footer',
    'form',
    'h1',
    'h2',
    'h3',
    'h4',
    'h5',
    'h6',
    'header',
    'hgroup',
    'html',
    'i',
    'iframe',
    'img',
    'input',
    'ins',
    'kbd',
    'label',
    'legend',
    'li',
    'main',
    'mark',
    'menu',
    'nav',
    'object',
    'ol',
    'optgroup',
    'option',
    'p',
    'picture',
    'q',
    'quote',
    'samp',
    'section',
    'select',
    'source',
    'span',
    'strong',
    'summary',
    'sup',
    'table',
    'tbody',
    'td',
    'textarea',
    'tfoot',
    'th',
    'thead',
    'time',
    'tr',
    'ul',
    'var',
    'video'
  ];

  const SVG_TAGS = [
    'defs',
    'g',
    'marker',
    'mask',
    'pattern',
    'svg',
    'switch',
    'symbol',
    'feBlend',
    'feColorMatrix',
    'feComponentTransfer',
    'feComposite',
    'feConvolveMatrix',
    'feDiffuseLighting',
    'feDisplacementMap',
    'feFlood',
    'feGaussianBlur',
    'feImage',
    'feMerge',
    'feMorphology',
    'feOffset',
    'feSpecularLighting',
    'feTile',
    'feTurbulence',
    'linearGradient',
    'radialGradient',
    'stop',
    'circle',
    'ellipse',
    'image',
    'line',
    'path',
    'polygon',
    'polyline',
    'rect',
    'text',
    'use',
    'textPath',
    'tspan',
    'foreignObject',
    'clipPath'
  ];

  const TAGS = [
    ...HTML_TAGS,
    ...SVG_TAGS,
  ];

  // Sorting, then reversing makes sure longer attributes/elements like
  // `font-weight` are matched fully instead of getting false positives on say `font`

  const MEDIA_FEATURES = [
    'any-hover',
    'any-pointer',
    'aspect-ratio',
    'color',
    'color-gamut',
    'color-index',
    'device-aspect-ratio',
    'device-height',
    'device-width',
    'display-mode',
    'forced-colors',
    'grid',
    'height',
    'hover',
    'inverted-colors',
    'monochrome',
    'orientation',
    'overflow-block',
    'overflow-inline',
    'pointer',
    'prefers-color-scheme',
    'prefers-contrast',
    'prefers-reduced-motion',
    'prefers-reduced-transparency',
    'resolution',
    'scan',
    'scripting',
    'update',
    'width',
    // TODO: find a better solution?
    'min-width',
    'max-width',
    'min-height',
    'max-height'
  ].sort().reverse();

  // https://developer.mozilla.org/en-US/docs/Web/CSS/Pseudo-classes
  const PSEUDO_CLASSES = [
    'active',
    'any-link',
    'blank',
    'checked',
    'current',
    'default',
    'defined',
    'dir', // dir()
    'disabled',
    'drop',
    'empty',
    'enabled',
    'first',
    'first-child',
    'first-of-type',
    'fullscreen',
    'future',
    'focus',
    'focus-visible',
    'focus-within',
    'has', // has()
    'host', // host or host()
    'host-context', // host-context()
    'hover',
    'indeterminate',
    'in-range',
    'invalid',
    'is', // is()
    'lang', // lang()
    'last-child',
    'last-of-type',
    'left',
    'link',
    'local-link',
    'not', // not()
    'nth-child', // nth-child()
    'nth-col', // nth-col()
    'nth-last-child', // nth-last-child()
    'nth-last-col', // nth-last-col()
    'nth-last-of-type', //nth-last-of-type()
    'nth-of-type', //nth-of-type()
    'only-child',
    'only-of-type',
    'optional',
    'out-of-range',
    'past',
    'placeholder-shown',
    'read-only',
    'read-write',
    'required',
    'right',
    'root',
    'scope',
    'target',
    'target-within',
    'user-invalid',
    'valid',
    'visited',
    'where' // where()
  ].sort().reverse();

  // https://developer.mozilla.org/en-US/docs/Web/CSS/Pseudo-elements
  const PSEUDO_ELEMENTS = [
    'after',
    'backdrop',
    'before',
    'cue',
    'cue-region',
    'first-letter',
    'first-line',
    'grammar-error',
    'marker',
    'part',
    'placeholder',
    'selection',
    'slotted',
    'spelling-error'
  ].sort().reverse();

  const ATTRIBUTES = [
    'accent-color',
    'align-content',
    'align-items',
    'align-self',
    'alignment-baseline',
    'all',
    'animation',
    'animation-delay',
    'animation-direction',
    'animation-duration',
    'animation-fill-mode',
    'animation-iteration-count',
    'animation-name',
    'animation-play-state',
    'animation-timing-function',
    'appearance',
    'backface-visibility',
    'background',
    'background-attachment',
    'background-blend-mode',
    'background-clip',
    'background-color',
    'background-image',
    'background-origin',
    'background-position',
    'background-repeat',
    'background-size',
    'baseline-shift',
    'block-size',
    'border',
    'border-block',
    'border-block-color',
    'border-block-end',
    'border-block-end-color',
    'border-block-end-style',
    'border-block-end-width',
    'border-block-start',
    'border-block-start-color',
    'border-block-start-style',
    'border-block-start-width',
    'border-block-style',
    'border-block-width',
    'border-bottom',
    'border-bottom-color',
    'border-bottom-left-radius',
    'border-bottom-right-radius',
    'border-bottom-style',
    'border-bottom-width',
    'border-collapse',
    'border-color',
    'border-image',
    'border-image-outset',
    'border-image-repeat',
    'border-image-slice',
    'border-image-source',
    'border-image-width',
    'border-inline',
    'border-inline-color',
    'border-inline-end',
    'border-inline-end-color',
    'border-inline-end-style',
    'border-inline-end-width',
    'border-inline-start',
    'border-inline-start-color',
    'border-inline-start-style',
    'border-inline-start-width',
    'border-inline-style',
    'border-inline-width',
    'border-left',
    'border-left-color',
    'border-left-style',
    'border-left-width',
    'border-radius',
    'border-right',
    'border-end-end-radius',
    'border-end-start-radius',
    'border-right-color',
    'border-right-style',
    'border-right-width',
    'border-spacing',
    'border-start-end-radius',
    'border-start-start-radius',
    'border-style',
    'border-top',
    'border-top-color',
    'border-top-left-radius',
    'border-top-right-radius',
    'border-top-style',
    'border-top-width',
    'border-width',
    'bottom',
    'box-decoration-break',
    'box-shadow',
    'box-sizing',
    'break-after',
    'break-before',
    'break-inside',
    'cx',
    'cy',
    'caption-side',
    'caret-color',
    'clear',
    'clip',
    'clip-path',
    'clip-rule',
    'color',
    'color-interpolation',
    'color-interpolation-filters',
    'color-profile',
    'color-rendering',
    'color-scheme',
    'column-count',
    'column-fill',
    'column-gap',
    'column-rule',
    'column-rule-color',
    'column-rule-style',
    'column-rule-width',
    'column-span',
    'column-width',
    'columns',
    'contain',
    'content',
    'content-visibility',
    'counter-increment',
    'counter-reset',
    'cue',
    'cue-after',
    'cue-before',
    'cursor',
    'direction',
    'display',
    'dominant-baseline',
    'empty-cells',
    'enable-background',
    'fill',
    'fill-opacity',
    'fill-rule',
    'filter',
    'flex',
    'flex-basis',
    'flex-direction',
    'flex-flow',
    'flex-grow',
    'flex-shrink',
    'flex-wrap',
    'float',
    'flow',
    'flood-color',
    'flood-opacity',
    'font',
    'font-display',
    'font-family',
    'font-feature-settings',
    'font-kerning',
    'font-language-override',
    'font-size',
    'font-size-adjust',
    'font-smoothing',
    'font-stretch',
    'font-style',
    'font-synthesis',
    'font-variant',
    'font-variant-caps',
    'font-variant-east-asian',
    'font-variant-ligatures',
    'font-variant-numeric',
    'font-variant-position',
    'font-variation-settings',
    'font-weight',
    'gap',
    'glyph-orientation-horizontal',
    'glyph-orientation-vertical',
    'grid',
    'grid-area',
    'grid-auto-columns',
    'grid-auto-flow',
    'grid-auto-rows',
    'grid-column',
    'grid-column-end',
    'grid-column-start',
    'grid-gap',
    'grid-row',
    'grid-row-end',
    'grid-row-start',
    'grid-template',
    'grid-template-areas',
    'grid-template-columns',
    'grid-template-rows',
    'hanging-punctuation',
    'height',
    'hyphens',
    'icon',
    'image-orientation',
    'image-rendering',
    'image-resolution',
    'ime-mode',
    'inline-size',
    'inset',
    'inset-block',
    'inset-block-end',
    'inset-block-start',
    'inset-inline',
    'inset-inline-end',
    'inset-inline-start',
    'isolation',
    'kerning',
    'justify-content',
    'justify-items',
    'justify-self',
    'left',
    'letter-spacing',
    'lighting-color',
    'line-break',
    'line-height',
    'list-style',
    'list-style-image',
    'list-style-position',
    'list-style-type',
    'marker',
    'marker-end',
    'marker-mid',
    'marker-start',
    'mask',
    'margin',
    'margin-block',
    'margin-block-end',
    'margin-block-start',
    'margin-bottom',
    'margin-inline',
    'margin-inline-end',
    'margin-inline-start',
    'margin-left',
    'margin-right',
    'margin-top',
    'marks',
    'mask',
    'mask-border',
    'mask-border-mode',
    'mask-border-outset',
    'mask-border-repeat',
    'mask-border-slice',
    'mask-border-source',
    'mask-border-width',
    'mask-clip',
    'mask-composite',
    'mask-image',
    'mask-mode',
    'mask-origin',
    'mask-position',
    'mask-repeat',
    'mask-size',
    'mask-type',
    'max-block-size',
    'max-height',
    'max-inline-size',
    'max-width',
    'min-block-size',
    'min-height',
    'min-inline-size',
    'min-width',
    'mix-blend-mode',
    'nav-down',
    'nav-index',
    'nav-left',
    'nav-right',
    'nav-up',
    'none',
    'normal',
    'object-fit',
    'object-position',
    'opacity',
    'order',
    'orphans',
    'outline',
    'outline-color',
    'outline-offset',
    'outline-style',
    'outline-width',
    'overflow',
    'overflow-wrap',
    'overflow-x',
    'overflow-y',
    'padding',
    'padding-block',
    'padding-block-end',
    'padding-block-start',
    'padding-bottom',
    'padding-inline',
    'padding-inline-end',
    'padding-inline-start',
    'padding-left',
    'padding-right',
    'padding-top',
    'page-break-after',
    'page-break-before',
    'page-break-inside',
    'pause',
    'pause-after',
    'pause-before',
    'perspective',
    'perspective-origin',
    'pointer-events',
    'position',
    'quotes',
    'r',
    'resize',
    'rest',
    'rest-after',
    'rest-before',
    'right',
    'rotate',
    'row-gap',
    'scale',
    'scroll-margin',
    'scroll-margin-block',
    'scroll-margin-block-end',
    'scroll-margin-block-start',
    'scroll-margin-bottom',
    'scroll-margin-inline',
    'scroll-margin-inline-end',
    'scroll-margin-inline-start',
    'scroll-margin-left',
    'scroll-margin-right',
    'scroll-margin-top',
    'scroll-padding',
    'scroll-padding-block',
    'scroll-padding-block-end',
    'scroll-padding-block-start',
    'scroll-padding-bottom',
    'scroll-padding-inline',
    'scroll-padding-inline-end',
    'scroll-padding-inline-start',
    'scroll-padding-left',
    'scroll-padding-right',
    'scroll-padding-top',
    'scroll-snap-align',
    'scroll-snap-stop',
    'scroll-snap-type',
    'scrollbar-color',
    'scrollbar-gutter',
    'scrollbar-width',
    'shape-image-threshold',
    'shape-margin',
    'shape-outside',
    'shape-rendering',
    'stop-color',
    'stop-opacity',
    'stroke',
    'stroke-dasharray',
    'stroke-dashoffset',
    'stroke-linecap',
    'stroke-linejoin',
    'stroke-miterlimit',
    'stroke-opacity',
    'stroke-width',
    'speak',
    'speak-as',
    'src', // @font-face
    'tab-size',
    'table-layout',
    'text-anchor',
    'text-align',
    'text-align-all',
    'text-align-last',
    'text-combine-upright',
    'text-decoration',
    'text-decoration-color',
    'text-decoration-line',
    'text-decoration-skip-ink',
    'text-decoration-style',
    'text-decoration-thickness',
    'text-emphasis',
    'text-emphasis-color',
    'text-emphasis-position',
    'text-emphasis-style',
    'text-indent',
    'text-justify',
    'text-orientation',
    'text-overflow',
    'text-rendering',
    'text-shadow',
    'text-transform',
    'text-underline-offset',
    'text-underline-position',
    'top',
    'transform',
    'transform-box',
    'transform-origin',
    'transform-style',
    'transition',
    'transition-delay',
    'transition-duration',
    'transition-property',
    'transition-timing-function',
    'translate',
    'unicode-bidi',
    'vector-effect',
    'vertical-align',
    'visibility',
    'voice-balance',
    'voice-duration',
    'voice-family',
    'voice-pitch',
    'voice-range',
    'voice-rate',
    'voice-stress',
    'voice-volume',
    'white-space',
    'widows',
    'width',
    'will-change',
    'word-break',
    'word-spacing',
    'word-wrap',
    'writing-mode',
    'x',
    'y',
    'z-index'
  ].sort().reverse();

  // some grammars use them all as a single group
  const PSEUDO_SELECTORS = PSEUDO_CLASSES.concat(PSEUDO_ELEMENTS).sort().reverse();

  /*
  Language: CSS
  Category: common, css, web
  Website: https://developer.mozilla.org/en-US/docs/Web/CSS
  */


  /** @type LanguageFn */
  function css(hljs) {
    const regex = hljs.regex;
    const modes = MODES(hljs);
    const VENDOR_PREFIX = { begin: /-(webkit|moz|ms|o)-(?=[a-z])/ };
    const AT_MODIFIERS = "and or not only";
    const AT_PROPERTY_RE = /@-?\w[\w]*(-\w+)*/; // @-webkit-keyframes
    const IDENT_RE = '[a-zA-Z-][a-zA-Z0-9_-]*';
    const STRINGS = [
      hljs.APOS_STRING_MODE,
      hljs.QUOTE_STRING_MODE
    ];

    return {
      name: 'CSS',
      case_insensitive: true,
      illegal: /[=|'\$]/,
      keywords: { keyframePosition: "from to" },
      classNameAliases: {
        // for visual continuity with `tag {}` and because we
        // don't have a great class for this?
        keyframePosition: "selector-tag" },
      contains: [
        modes.BLOCK_COMMENT,
        VENDOR_PREFIX,
        // to recognize keyframe 40% etc which are outside the scope of our
        // attribute value mode
        modes.CSS_NUMBER_MODE,
        {
          className: 'selector-id',
          begin: /#[A-Za-z0-9_-]+/,
          relevance: 0
        },
        {
          className: 'selector-class',
          begin: '\\.' + IDENT_RE,
          relevance: 0
        },
        modes.ATTRIBUTE_SELECTOR_MODE,
        {
          className: 'selector-pseudo',
          variants: [
            { begin: ':(' + PSEUDO_CLASSES.join('|') + ')' },
            { begin: ':(:)?(' + PSEUDO_ELEMENTS.join('|') + ')' }
          ]
        },
        // we may actually need this (12/2020)
        // { // pseudo-selector params
        //   begin: /\(/,
        //   end: /\)/,
        //   contains: [ hljs.CSS_NUMBER_MODE ]
        // },
        modes.CSS_VARIABLE,
        {
          className: 'attribute',
          begin: '\\b(' + ATTRIBUTES.join('|') + ')\\b'
        },
        // attribute values
        {
          begin: /:/,
          end: /[;}{]/,
          contains: [
            modes.BLOCK_COMMENT,
            modes.HEXCOLOR,
            modes.IMPORTANT,
            modes.CSS_NUMBER_MODE,
            ...STRINGS,
            // needed to highlight these as strings and to avoid issues with
            // illegal characters that might be inside urls that would tigger the
            // languages illegal stack
            {
              begin: /(url|data-uri)\(/,
              end: /\)/,
              relevance: 0, // from keywords
              keywords: { built_in: "url data-uri" },
              contains: [
                ...STRINGS,
                {
                  className: "string",
                  // any character other than `)` as in `url()` will be the start
                  // of a string, which ends with `)` (from the parent mode)
                  begin: /[^)]/,
                  endsWithParent: true,
                  excludeEnd: true
                }
              ]
            },
            modes.FUNCTION_DISPATCH
          ]
        },
        {
          begin: regex.lookahead(/@/),
          end: '[{;]',
          relevance: 0,
          illegal: /:/, // break on Less variables @var: ...
          contains: [
            {
              className: 'keyword',
              begin: AT_PROPERTY_RE
            },
            {
              begin: /\s/,
              endsWithParent: true,
              excludeEnd: true,
              relevance: 0,
              keywords: {
                $pattern: /[a-z-]+/,
                keyword: AT_MODIFIERS,
                attribute: MEDIA_FEATURES.join(" ")
              },
              contains: [
                {
                  begin: /[a-z-]+(?=:)/,
                  className: "attribute"
                },
                ...STRINGS,
                modes.CSS_NUMBER_MODE
              ]
            }
          ]
        },
        {
          className: 'selector-tag',
          begin: '\\b(' + TAGS.join('|') + ')\\b'
        }
      ]
    };
  }

  /*
  Language: Diff
  Description: Unified and context diff
  Author: Vasily Polovnyov <vast@whiteants.net>
  Website: https://www.gnu.org/software/diffutils/
  Category: common
  */

  /** @type LanguageFn */
  function diff(hljs) {
    const regex = hljs.regex;
    return {
      name: 'Diff',
      aliases: [ 'patch' ],
      contains: [
        {
          className: 'meta',
          relevance: 10,
          match: regex.either(
            /^@@ +-\d+,\d+ +\+\d+,\d+ +@@/,
            /^\*\*\* +\d+,\d+ +\*\*\*\*$/,
            /^--- +\d+,\d+ +----$/
          )
        },
        {
          className: 'comment',
          variants: [
            {
              begin: regex.either(
                /Index: /,
                /^index/,
                /={3,}/,
                /^-{3}/,
                /^\*{3} /,
                /^\+{3}/,
                /^diff --git/
              ),
              end: /$/
            },
            { match: /^\*{15}$/ }
          ]
        },
        {
          className: 'addition',
          begin: /^\+/,
          end: /$/
        },
        {
          className: 'deletion',
          begin: /^-/,
          end: /$/
        },
        {
          className: 'addition',
          begin: /^!/,
          end: /$/
        }
      ]
    };
  }

  /*
  Language: Go
  Author: Stephan Kountso aka StepLg <steplg@gmail.com>
  Contributors: Evgeny Stepanischev <imbolk@gmail.com>
  Description: Google go language (golang). For info about language
  Website: http://golang.org/
  Category: common, system
  */

  function go(hljs) {
    const LITERALS = [
      "true",
      "false",
      "iota",
      "nil"
    ];
    const BUILT_INS = [
      "append",
      "cap",
      "close",
      "complex",
      "copy",
      "imag",
      "len",
      "make",
      "new",
      "panic",
      "print",
      "println",
      "real",
      "recover",
      "delete"
    ];
    const TYPES = [
      "bool",
      "byte",
      "complex64",
      "complex128",
      "error",
      "float32",
      "float64",
      "int8",
      "int16",
      "int32",
      "int64",
      "string",
      "uint8",
      "uint16",
      "uint32",
      "uint64",
      "int",
      "uint",
      "uintptr",
      "rune"
    ];
    const KWS = [
      "break",
      "case",
      "chan",
      "const",
      "continue",
      "default",
      "defer",
      "else",
      "fallthrough",
      "for",
      "func",
      "go",
      "goto",
      "if",
      "import",
      "interface",
      "map",
      "package",
      "range",
      "return",
      "select",
      "struct",
      "switch",
      "type",
      "var",
    ];
    const KEYWORDS = {
      keyword: KWS,
      type: TYPES,
      literal: LITERALS,
      built_in: BUILT_INS
    };
    return {
      name: 'Go',
      aliases: [ 'golang' ],
      keywords: KEYWORDS,
      illegal: '</',
      contains: [
        hljs.C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE,
        {
          className: 'string',
          variants: [
            hljs.QUOTE_STRING_MODE,
            hljs.APOS_STRING_MODE,
            {
              begin: '`',
              end: '`'
            }
          ]
        },
        {
          className: 'number',
          variants: [
            {
              match: /-?\b0[xX]\.[a-fA-F0-9](_?[a-fA-F0-9])*[pP][+-]?\d(_?\d)*i?/, // hex without a present digit before . (making a digit afterwards required)
              relevance: 0
            },
            {
              match: /-?\b0[xX](_?[a-fA-F0-9])+((\.([a-fA-F0-9](_?[a-fA-F0-9])*)?)?[pP][+-]?\d(_?\d)*)?i?/, // hex with a present digit before . (making a digit afterwards optional)
              relevance: 0
            },
            {
              match: /-?\b0[oO](_?[0-7])*i?/, // leading 0o octal
              relevance: 0
            },
            {
              match: /-?\.\d(_?\d)*([eE][+-]?\d(_?\d)*)?i?/, // decimal without a present digit before . (making a digit afterwards required)
              relevance: 0
            },
            {
              match: /-?\b\d(_?\d)*(\.(\d(_?\d)*)?)?([eE][+-]?\d(_?\d)*)?i?/, // decimal with a present digit before . (making a digit afterwards optional)
              relevance: 0
            }
          ]
        },
        { begin: /:=/ // relevance booster
        },
        {
          className: 'function',
          beginKeywords: 'func',
          end: '\\s*(\\{|$)',
          excludeEnd: true,
          contains: [
            hljs.TITLE_MODE,
            {
              className: 'params',
              begin: /\(/,
              end: /\)/,
              endsParent: true,
              keywords: KEYWORDS,
              illegal: /["']/
            }
          ]
        }
      ]
    };
  }

  /*
   Language: GraphQL
   Author: John Foster (GH jf990), and others
   Description: GraphQL is a query language for APIs
   Category: web, common
  */

  /** @type LanguageFn */
  function graphql(hljs) {
    const regex = hljs.regex;
    const GQL_NAME = /[_A-Za-z][_0-9A-Za-z]*/;
    return {
      name: "GraphQL",
      aliases: [ "gql" ],
      case_insensitive: true,
      disableAutodetect: false,
      keywords: {
        keyword: [
          "query",
          "mutation",
          "subscription",
          "type",
          "input",
          "schema",
          "directive",
          "interface",
          "union",
          "scalar",
          "fragment",
          "enum",
          "on"
        ],
        literal: [
          "true",
          "false",
          "null"
        ]
      },
      contains: [
        hljs.HASH_COMMENT_MODE,
        hljs.QUOTE_STRING_MODE,
        hljs.NUMBER_MODE,
        {
          scope: "punctuation",
          match: /[.]{3}/,
          relevance: 0
        },
        {
          scope: "punctuation",
          begin: /[\!\(\)\:\=\[\]\{\|\}]{1}/,
          relevance: 0
        },
        {
          scope: "variable",
          begin: /\$/,
          end: /\W/,
          excludeEnd: true,
          relevance: 0
        },
        {
          scope: "meta",
          match: /@\w+/,
          excludeEnd: true
        },
        {
          scope: "symbol",
          begin: regex.concat(GQL_NAME, regex.lookahead(/\s*:/)),
          relevance: 0
        }
      ],
      illegal: [
        /[;<']/,
        /BEGIN/
      ]
    };
  }

  /*
  Language: TOML, also INI
  Description: TOML aims to be a minimal configuration file format that's easy to read due to obvious semantics.
  Contributors: Guillaume Gomez <guillaume1.gomez@gmail.com>
  Category: common, config
  Website: https://github.com/toml-lang/toml
  */

  function ini(hljs) {
    const regex = hljs.regex;
    const NUMBERS = {
      className: 'number',
      relevance: 0,
      variants: [
        { begin: /([+-]+)?[\d]+_[\d_]+/ },
        { begin: hljs.NUMBER_RE }
      ]
    };
    const COMMENTS = hljs.COMMENT();
    COMMENTS.variants = [
      {
        begin: /;/,
        end: /$/
      },
      {
        begin: /#/,
        end: /$/
      }
    ];
    const VARIABLES = {
      className: 'variable',
      variants: [
        { begin: /\$[\w\d"][\w\d_]*/ },
        { begin: /\$\{(.*?)\}/ }
      ]
    };
    const LITERALS = {
      className: 'literal',
      begin: /\bon|off|true|false|yes|no\b/
    };
    const STRINGS = {
      className: "string",
      contains: [ hljs.BACKSLASH_ESCAPE ],
      variants: [
        {
          begin: "'''",
          end: "'''",
          relevance: 10
        },
        {
          begin: '"""',
          end: '"""',
          relevance: 10
        },
        {
          begin: '"',
          end: '"'
        },
        {
          begin: "'",
          end: "'"
        }
      ]
    };
    const ARRAY = {
      begin: /\[/,
      end: /\]/,
      contains: [
        COMMENTS,
        LITERALS,
        VARIABLES,
        STRINGS,
        NUMBERS,
        'self'
      ],
      relevance: 0
    };

    const BARE_KEY = /[A-Za-z0-9_-]+/;
    const QUOTED_KEY_DOUBLE_QUOTE = /"(\\"|[^"])*"/;
    const QUOTED_KEY_SINGLE_QUOTE = /'[^']*'/;
    const ANY_KEY = regex.either(
      BARE_KEY, QUOTED_KEY_DOUBLE_QUOTE, QUOTED_KEY_SINGLE_QUOTE
    );
    const DOTTED_KEY = regex.concat(
      ANY_KEY, '(\\s*\\.\\s*', ANY_KEY, ')*',
      regex.lookahead(/\s*=\s*[^#\s]/)
    );

    return {
      name: 'TOML, also INI',
      aliases: [ 'toml' ],
      case_insensitive: true,
      illegal: /\S/,
      contains: [
        COMMENTS,
        {
          className: 'section',
          begin: /\[+/,
          end: /\]+/
        },
        {
          begin: DOTTED_KEY,
          className: 'attr',
          starts: {
            end: /$/,
            contains: [
              COMMENTS,
              ARRAY,
              LITERALS,
              VARIABLES,
              STRINGS,
              NUMBERS
            ]
          }
        }
      ]
    };
  }

  // https://docs.oracle.com/javase/specs/jls/se15/html/jls-3.html#jls-3.10
  var decimalDigits = '[0-9](_*[0-9])*';
  var frac = `\\.(${decimalDigits})`;
  var hexDigits = '[0-9a-fA-F](_*[0-9a-fA-F])*';
  var NUMERIC = {
    className: 'number',
    variants: [
      // DecimalFloatingPointLiteral
      // including ExponentPart
      { begin: `(\\b(${decimalDigits})((${frac})|\\.)?|(${frac}))` +
        `[eE][+-]?(${decimalDigits})[fFdD]?\\b` },
      // excluding ExponentPart
      { begin: `\\b(${decimalDigits})((${frac})[fFdD]?\\b|\\.([fFdD]\\b)?)` },
      { begin: `(${frac})[fFdD]?\\b` },
      { begin: `\\b(${decimalDigits})[fFdD]\\b` },

      // HexadecimalFloatingPointLiteral
      { begin: `\\b0[xX]((${hexDigits})\\.?|(${hexDigits})?\\.(${hexDigits}))` +
        `[pP][+-]?(${decimalDigits})[fFdD]?\\b` },

      // DecimalIntegerLiteral
      { begin: '\\b(0|[1-9](_*[0-9])*)[lL]?\\b' },

      // HexIntegerLiteral
      { begin: `\\b0[xX](${hexDigits})[lL]?\\b` },

      // OctalIntegerLiteral
      { begin: '\\b0(_*[0-7])*[lL]?\\b' },

      // BinaryIntegerLiteral
      { begin: '\\b0[bB][01](_*[01])*[lL]?\\b' },
    ],
    relevance: 0
  };

  /*
  Language: Java
  Author: Vsevolod Solovyov <vsevolod.solovyov@gmail.com>
  Category: common, enterprise
  Website: https://www.java.com/
  */


  /**
   * Allows recursive regex expressions to a given depth
   *
   * ie: recurRegex("(abc~~~)", /~~~/g, 2) becomes:
   * (abc(abc(abc)))
   *
   * @param {string} re
   * @param {RegExp} substitution (should be a g mode regex)
   * @param {number} depth
   * @returns {string}``
   */
  function recurRegex(re, substitution, depth) {
    if (depth === -1) return "";

    return re.replace(substitution, _ => {
      return recurRegex(re, substitution, depth - 1);
    });
  }

  /** @type LanguageFn */
  function java(hljs) {
    const regex = hljs.regex;
    const JAVA_IDENT_RE = '[\u00C0-\u02B8a-zA-Z_$][\u00C0-\u02B8a-zA-Z_$0-9]*';
    const GENERIC_IDENT_RE = JAVA_IDENT_RE
      + recurRegex('(?:<' + JAVA_IDENT_RE + '~~~(?:\\s*,\\s*' + JAVA_IDENT_RE + '~~~)*>)?', /~~~/g, 2);
    const MAIN_KEYWORDS = [
      'synchronized',
      'abstract',
      'private',
      'var',
      'static',
      'if',
      'const ',
      'for',
      'while',
      'strictfp',
      'finally',
      'protected',
      'import',
      'native',
      'final',
      'void',
      'enum',
      'else',
      'break',
      'transient',
      'catch',
      'instanceof',
      'volatile',
      'case',
      'assert',
      'package',
      'default',
      'public',
      'try',
      'switch',
      'continue',
      'throws',
      'protected',
      'public',
      'private',
      'module',
      'requires',
      'exports',
      'do',
      'sealed',
      'yield',
      'permits',
      'goto'
    ];

    const BUILT_INS = [
      'super',
      'this'
    ];

    const LITERALS = [
      'false',
      'true',
      'null'
    ];

    const TYPES = [
      'char',
      'boolean',
      'long',
      'float',
      'int',
      'byte',
      'short',
      'double'
    ];

    const KEYWORDS = {
      keyword: MAIN_KEYWORDS,
      literal: LITERALS,
      type: TYPES,
      built_in: BUILT_INS
    };

    const ANNOTATION = {
      className: 'meta',
      begin: '@' + JAVA_IDENT_RE,
      contains: [
        {
          begin: /\(/,
          end: /\)/,
          contains: [ "self" ] // allow nested () inside our annotation
        }
      ]
    };
    const PARAMS = {
      className: 'params',
      begin: /\(/,
      end: /\)/,
      keywords: KEYWORDS,
      relevance: 0,
      contains: [ hljs.C_BLOCK_COMMENT_MODE ],
      endsParent: true
    };

    return {
      name: 'Java',
      aliases: [ 'jsp' ],
      keywords: KEYWORDS,
      illegal: /<\/|#/,
      contains: [
        hljs.COMMENT(
          '/\\*\\*',
          '\\*/',
          {
            relevance: 0,
            contains: [
              {
                // eat up @'s in emails to prevent them to be recognized as doctags
                begin: /\w+@/,
                relevance: 0
              },
              {
                className: 'doctag',
                begin: '@[A-Za-z]+'
              }
            ]
          }
        ),
        // relevance boost
        {
          begin: /import java\.[a-z]+\./,
          keywords: "import",
          relevance: 2
        },
        hljs.C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE,
        {
          begin: /"""/,
          end: /"""/,
          className: "string",
          contains: [ hljs.BACKSLASH_ESCAPE ]
        },
        hljs.APOS_STRING_MODE,
        hljs.QUOTE_STRING_MODE,
        {
          match: [
            /\b(?:class|interface|enum|extends|implements|new)/,
            /\s+/,
            JAVA_IDENT_RE
          ],
          className: {
            1: "keyword",
            3: "title.class"
          }
        },
        {
          // Exceptions for hyphenated keywords
          match: /non-sealed/,
          scope: "keyword"
        },
        {
          begin: [
            regex.concat(/(?!else)/, JAVA_IDENT_RE),
            /\s+/,
            JAVA_IDENT_RE,
            /\s+/,
            /=(?!=)/
          ],
          className: {
            1: "type",
            3: "variable",
            5: "operator"
          }
        },
        {
          begin: [
            /record/,
            /\s+/,
            JAVA_IDENT_RE
          ],
          className: {
            1: "keyword",
            3: "title.class"
          },
          contains: [
            PARAMS,
            hljs.C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE
          ]
        },
        {
          // Expression keywords prevent 'keyword Name(...)' from being
          // recognized as a function definition
          beginKeywords: 'new throw return else',
          relevance: 0
        },
        {
          begin: [
            '(?:' + GENERIC_IDENT_RE + '\\s+)',
            hljs.UNDERSCORE_IDENT_RE,
            /\s*(?=\()/
          ],
          className: { 2: "title.function" },
          keywords: KEYWORDS,
          contains: [
            {
              className: 'params',
              begin: /\(/,
              end: /\)/,
              keywords: KEYWORDS,
              relevance: 0,
              contains: [
                ANNOTATION,
                hljs.APOS_STRING_MODE,
                hljs.QUOTE_STRING_MODE,
                NUMERIC,
                hljs.C_BLOCK_COMMENT_MODE
              ]
            },
            hljs.C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE
          ]
        },
        NUMERIC,
        ANNOTATION
      ]
    };
  }

  const IDENT_RE = '[A-Za-z$_][0-9A-Za-z$_]*';
  const KEYWORDS = [
    "as", // for exports
    "in",
    "of",
    "if",
    "for",
    "while",
    "finally",
    "var",
    "new",
    "function",
    "do",
    "return",
    "void",
    "else",
    "break",
    "catch",
    "instanceof",
    "with",
    "throw",
    "case",
    "default",
    "try",
    "switch",
    "continue",
    "typeof",
    "delete",
    "let",
    "yield",
    "const",
    "class",
    // JS handles these with a special rule
    // "get",
    // "set",
    "debugger",
    "async",
    "await",
    "static",
    "import",
    "from",
    "export",
    "extends"
  ];
  const LITERALS = [
    "true",
    "false",
    "null",
    "undefined",
    "NaN",
    "Infinity"
  ];

  // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects
  const TYPES = [
    // Fundamental objects
    "Object",
    "Function",
    "Boolean",
    "Symbol",
    // numbers and dates
    "Math",
    "Date",
    "Number",
    "BigInt",
    // text
    "String",
    "RegExp",
    // Indexed collections
    "Array",
    "Float32Array",
    "Float64Array",
    "Int8Array",
    "Uint8Array",
    "Uint8ClampedArray",
    "Int16Array",
    "Int32Array",
    "Uint16Array",
    "Uint32Array",
    "BigInt64Array",
    "BigUint64Array",
    // Keyed collections
    "Set",
    "Map",
    "WeakSet",
    "WeakMap",
    // Structured data
    "ArrayBuffer",
    "SharedArrayBuffer",
    "Atomics",
    "DataView",
    "JSON",
    // Control abstraction objects
    "Promise",
    "Generator",
    "GeneratorFunction",
    "AsyncFunction",
    // Reflection
    "Reflect",
    "Proxy",
    // Internationalization
    "Intl",
    // WebAssembly
    "WebAssembly"
  ];

  const ERROR_TYPES = [
    "Error",
    "EvalError",
    "InternalError",
    "RangeError",
    "ReferenceError",
    "SyntaxError",
    "TypeError",
    "URIError"
  ];

  const BUILT_IN_GLOBALS = [
    "setInterval",
    "setTimeout",
    "clearInterval",
    "clearTimeout",

    "require",
    "exports",

    "eval",
    "isFinite",
    "isNaN",
    "parseFloat",
    "parseInt",
    "decodeURI",
    "decodeURIComponent",
    "encodeURI",
    "encodeURIComponent",
    "escape",
    "unescape"
  ];

  const BUILT_IN_VARIABLES = [
    "arguments",
    "this",
    "super",
    "console",
    "window",
    "document",
    "localStorage",
    "sessionStorage",
    "module",
    "global" // Node.js
  ];

  const BUILT_INS = [].concat(
    BUILT_IN_GLOBALS,
    TYPES,
    ERROR_TYPES
  );

  /*
  Language: JavaScript
  Description: JavaScript (JS) is a lightweight, interpreted, or just-in-time compiled programming language with first-class functions.
  Category: common, scripting, web
  Website: https://developer.mozilla.org/en-US/docs/Web/JavaScript
  */


  /** @type LanguageFn */
  function javascript(hljs) {
    const regex = hljs.regex;
    /**
     * Takes a string like "<Booger" and checks to see
     * if we can find a matching "</Booger" later in the
     * content.
     * @param {RegExpMatchArray} match
     * @param {{after:number}} param1
     */
    const hasClosingTag = (match, { after }) => {
      const tag = "</" + match[0].slice(1);
      const pos = match.input.indexOf(tag, after);
      return pos !== -1;
    };

    const IDENT_RE$1 = IDENT_RE;
    const FRAGMENT = {
      begin: '<>',
      end: '</>'
    };
    // to avoid some special cases inside isTrulyOpeningTag
    const XML_SELF_CLOSING = /<[A-Za-z0-9\\._:-]+\s*\/>/;
    const XML_TAG = {
      begin: /<[A-Za-z0-9\\._:-]+/,
      end: /\/[A-Za-z0-9\\._:-]+>|\/>/,
      /**
       * @param {RegExpMatchArray} match
       * @param {CallbackResponse} response
       */
      isTrulyOpeningTag: (match, response) => {
        const afterMatchIndex = match[0].length + match.index;
        const nextChar = match.input[afterMatchIndex];
        if (
          // HTML should not include another raw `<` inside a tag
          // nested type?
          // `<Array<Array<number>>`, etc.
          nextChar === "<" ||
          // the , gives away that this is not HTML
          // `<T, A extends keyof T, V>`
          nextChar === ","
          ) {
          response.ignoreMatch();
          return;
        }

        // `<something>`
        // Quite possibly a tag, lets look for a matching closing tag...
        if (nextChar === ">") {
          // if we cannot find a matching closing tag, then we
          // will ignore it
          if (!hasClosingTag(match, { after: afterMatchIndex })) {
            response.ignoreMatch();
          }
        }

        // `<blah />` (self-closing)
        // handled by simpleSelfClosing rule

        let m;
        const afterMatch = match.input.substring(afterMatchIndex);

        // some more template typing stuff
        //  <T = any>(key?: string) => Modify<
        if ((m = afterMatch.match(/^\s*=/))) {
          response.ignoreMatch();
          return;
        }

        // `<From extends string>`
        // technically this could be HTML, but it smells like a type
        // NOTE: This is ugh, but added specifically for https://github.com/highlightjs/highlight.js/issues/3276
        if ((m = afterMatch.match(/^\s+extends\s+/))) {
          if (m.index === 0) {
            response.ignoreMatch();
            // eslint-disable-next-line no-useless-return
            return;
          }
        }
      }
    };
    const KEYWORDS$1 = {
      $pattern: IDENT_RE,
      keyword: KEYWORDS,
      literal: LITERALS,
      built_in: BUILT_INS,
      "variable.language": BUILT_IN_VARIABLES
    };

    // https://tc39.es/ecma262/#sec-literals-numeric-literals
    const decimalDigits = '[0-9](_?[0-9])*';
    const frac = `\\.(${decimalDigits})`;
    // DecimalIntegerLiteral, including Annex B NonOctalDecimalIntegerLiteral
    // https://tc39.es/ecma262/#sec-additional-syntax-numeric-literals
    const decimalInteger = `0|[1-9](_?[0-9])*|0[0-7]*[89][0-9]*`;
    const NUMBER = {
      className: 'number',
      variants: [
        // DecimalLiteral
        { begin: `(\\b(${decimalInteger})((${frac})|\\.)?|(${frac}))` +
          `[eE][+-]?(${decimalDigits})\\b` },
        { begin: `\\b(${decimalInteger})\\b((${frac})\\b|\\.)?|(${frac})\\b` },

        // DecimalBigIntegerLiteral
        { begin: `\\b(0|[1-9](_?[0-9])*)n\\b` },

        // NonDecimalIntegerLiteral
        { begin: "\\b0[xX][0-9a-fA-F](_?[0-9a-fA-F])*n?\\b" },
        { begin: "\\b0[bB][0-1](_?[0-1])*n?\\b" },
        { begin: "\\b0[oO][0-7](_?[0-7])*n?\\b" },

        // LegacyOctalIntegerLiteral (does not include underscore separators)
        // https://tc39.es/ecma262/#sec-additional-syntax-numeric-literals
        { begin: "\\b0[0-7]+n?\\b" },
      ],
      relevance: 0
    };

    const SUBST = {
      className: 'subst',
      begin: '\\$\\{',
      end: '\\}',
      keywords: KEYWORDS$1,
      contains: [] // defined later
    };
    const HTML_TEMPLATE = {
      begin: '\.?html`',
      end: '',
      starts: {
        end: '`',
        returnEnd: false,
        contains: [
          hljs.BACKSLASH_ESCAPE,
          SUBST
        ],
        subLanguage: 'xml'
      }
    };
    const CSS_TEMPLATE = {
      begin: '\.?css`',
      end: '',
      starts: {
        end: '`',
        returnEnd: false,
        contains: [
          hljs.BACKSLASH_ESCAPE,
          SUBST
        ],
        subLanguage: 'css'
      }
    };
    const GRAPHQL_TEMPLATE = {
      begin: '\.?gql`',
      end: '',
      starts: {
        end: '`',
        returnEnd: false,
        contains: [
          hljs.BACKSLASH_ESCAPE,
          SUBST
        ],
        subLanguage: 'graphql'
      }
    };
    const TEMPLATE_STRING = {
      className: 'string',
      begin: '`',
      end: '`',
      contains: [
        hljs.BACKSLASH_ESCAPE,
        SUBST
      ]
    };
    const JSDOC_COMMENT = hljs.COMMENT(
      /\/\*\*(?!\/)/,
      '\\*/',
      {
        relevance: 0,
        contains: [
          {
            begin: '(?=@[A-Za-z]+)',
            relevance: 0,
            contains: [
              {
                className: 'doctag',
                begin: '@[A-Za-z]+'
              },
              {
                className: 'type',
                begin: '\\{',
                end: '\\}',
                excludeEnd: true,
                excludeBegin: true,
                relevance: 0
              },
              {
                className: 'variable',
                begin: IDENT_RE$1 + '(?=\\s*(-)|$)',
                endsParent: true,
                relevance: 0
              },
              // eat spaces (not newlines) so we can find
              // types or variables
              {
                begin: /(?=[^\n])\s/,
                relevance: 0
              }
            ]
          }
        ]
      }
    );
    const COMMENT = {
      className: "comment",
      variants: [
        JSDOC_COMMENT,
        hljs.C_BLOCK_COMMENT_MODE,
        hljs.C_LINE_COMMENT_MODE
      ]
    };
    const SUBST_INTERNALS = [
      hljs.APOS_STRING_MODE,
      hljs.QUOTE_STRING_MODE,
      HTML_TEMPLATE,
      CSS_TEMPLATE,
      GRAPHQL_TEMPLATE,
      TEMPLATE_STRING,
      // Skip numbers when they are part of a variable name
      { match: /\$\d+/ },
      NUMBER,
      // This is intentional:
      // See https://github.com/highlightjs/highlight.js/issues/3288
      // hljs.REGEXP_MODE
    ];
    SUBST.contains = SUBST_INTERNALS
      .concat({
        // we need to pair up {} inside our subst to prevent
        // it from ending too early by matching another }
        begin: /\{/,
        end: /\}/,
        keywords: KEYWORDS$1,
        contains: [
          "self"
        ].concat(SUBST_INTERNALS)
      });
    const SUBST_AND_COMMENTS = [].concat(COMMENT, SUBST.contains);
    const PARAMS_CONTAINS = SUBST_AND_COMMENTS.concat([
      // eat recursive parens in sub expressions
      {
        begin: /(\s*)\(/,
        end: /\)/,
        keywords: KEYWORDS$1,
        contains: ["self"].concat(SUBST_AND_COMMENTS)
      }
    ]);
    const PARAMS = {
      className: 'params',
      // convert this to negative lookbehind in v12
      begin: /(\s*)\(/, // to match the parms with 
      end: /\)/,
      excludeBegin: true,
      excludeEnd: true,
      keywords: KEYWORDS$1,
      contains: PARAMS_CONTAINS
    };

    // ES6 classes
    const CLASS_OR_EXTENDS = {
      variants: [
        // class Car extends vehicle
        {
          match: [
            /class/,
            /\s+/,
            IDENT_RE$1,
            /\s+/,
            /extends/,
            /\s+/,
            regex.concat(IDENT_RE$1, "(", regex.concat(/\./, IDENT_RE$1), ")*")
          ],
          scope: {
            1: "keyword",
            3: "title.class",
            5: "keyword",
            7: "title.class.inherited"
          }
        },
        // class Car
        {
          match: [
            /class/,
            /\s+/,
            IDENT_RE$1
          ],
          scope: {
            1: "keyword",
            3: "title.class"
          }
        },

      ]
    };

    const CLASS_REFERENCE = {
      relevance: 0,
      match:
      regex.either(
        // Hard coded exceptions
        /\bJSON/,
        // Float32Array, OutT
        /\b[A-Z][a-z]+([A-Z][a-z]*|\d)*/,
        // CSSFactory, CSSFactoryT
        /\b[A-Z]{2,}([A-Z][a-z]+|\d)+([A-Z][a-z]*)*/,
        // FPs, FPsT
        /\b[A-Z]{2,}[a-z]+([A-Z][a-z]+|\d)*([A-Z][a-z]*)*/,
        // P
        // single letters are not highlighted
        // BLAH
        // this will be flagged as a UPPER_CASE_CONSTANT instead
      ),
      className: "title.class",
      keywords: {
        _: [
          // se we still get relevance credit for JS library classes
          ...TYPES,
          ...ERROR_TYPES
        ]
      }
    };

    const USE_STRICT = {
      label: "use_strict",
      className: 'meta',
      relevance: 10,
      begin: /^\s*['"]use (strict|asm)['"]/
    };

    const FUNCTION_DEFINITION = {
      variants: [
        {
          match: [
            /function/,
            /\s+/,
            IDENT_RE$1,
            /(?=\s*\()/
          ]
        },
        // anonymous function
        {
          match: [
            /function/,
            /\s*(?=\()/
          ]
        }
      ],
      className: {
        1: "keyword",
        3: "title.function"
      },
      label: "func.def",
      contains: [ PARAMS ],
      illegal: /%/
    };

    const UPPER_CASE_CONSTANT = {
      relevance: 0,
      match: /\b[A-Z][A-Z_0-9]+\b/,
      className: "variable.constant"
    };

    function noneOf(list) {
      return regex.concat("(?!", list.join("|"), ")");
    }

    const FUNCTION_CALL = {
      match: regex.concat(
        /\b/,
        noneOf([
          ...BUILT_IN_GLOBALS,
          "super",
          "import"
        ].map(x => `${x}\\s*\\(`)),
        IDENT_RE$1, regex.lookahead(/\s*\(/)),
      className: "title.function",
      relevance: 0
    };

    const PROPERTY_ACCESS = {
      begin: regex.concat(/\./, regex.lookahead(
        regex.concat(IDENT_RE$1, /(?![0-9A-Za-z$_(])/)
      )),
      end: IDENT_RE$1,
      excludeBegin: true,
      keywords: "prototype",
      className: "property",
      relevance: 0
    };

    const GETTER_OR_SETTER = {
      match: [
        /get|set/,
        /\s+/,
        IDENT_RE$1,
        /(?=\()/
      ],
      className: {
        1: "keyword",
        3: "title.function"
      },
      contains: [
        { // eat to avoid empty params
          begin: /\(\)/
        },
        PARAMS
      ]
    };

    const FUNC_LEAD_IN_RE = '(\\(' +
      '[^()]*(\\(' +
      '[^()]*(\\(' +
      '[^()]*' +
      '\\)[^()]*)*' +
      '\\)[^()]*)*' +
      '\\)|' + hljs.UNDERSCORE_IDENT_RE + ')\\s*=>';

    const FUNCTION_VARIABLE = {
      match: [
        /const|var|let/, /\s+/,
        IDENT_RE$1, /\s*/,
        /=\s*/,
        /(async\s*)?/, // async is optional
        regex.lookahead(FUNC_LEAD_IN_RE)
      ],
      keywords: "async",
      className: {
        1: "keyword",
        3: "title.function"
      },
      contains: [
        PARAMS
      ]
    };

    return {
      name: 'JavaScript',
      aliases: ['js', 'jsx', 'mjs', 'cjs'],
      keywords: KEYWORDS$1,
      // this will be extended by TypeScript
      exports: { PARAMS_CONTAINS, CLASS_REFERENCE },
      illegal: /#(?![$_A-z])/,
      contains: [
        hljs.SHEBANG({
          label: "shebang",
          binary: "node",
          relevance: 5
        }),
        USE_STRICT,
        hljs.APOS_STRING_MODE,
        hljs.QUOTE_STRING_MODE,
        HTML_TEMPLATE,
        CSS_TEMPLATE,
        GRAPHQL_TEMPLATE,
        TEMPLATE_STRING,
        COMMENT,
        // Skip numbers when they are part of a variable name
        { match: /\$\d+/ },
        NUMBER,
        CLASS_REFERENCE,
        {
          className: 'attr',
          begin: IDENT_RE$1 + regex.lookahead(':'),
          relevance: 0
        },
        FUNCTION_VARIABLE,
        { // "value" container
          begin: '(' + hljs.RE_STARTERS_RE + '|\\b(case|return|throw)\\b)\\s*',
          keywords: 'return throw case',
          relevance: 0,
          contains: [
            COMMENT,
            hljs.REGEXP_MODE,
            {
              className: 'function',
              // we have to count the parens to make sure we actually have the
              // correct bounding ( ) before the =>.  There could be any number of
              // sub-expressions inside also surrounded by parens.
              begin: FUNC_LEAD_IN_RE,
              returnBegin: true,
              end: '\\s*=>',
              contains: [
                {
                  className: 'params',
                  variants: [
                    {
                      begin: hljs.UNDERSCORE_IDENT_RE,
                      relevance: 0
                    },
                    {
                      className: null,
                      begin: /\(\s*\)/,
                      skip: true
                    },
                    {
                      begin: /(\s*)\(/,
                      end: /\)/,
                      excludeBegin: true,
                      excludeEnd: true,
                      keywords: KEYWORDS$1,
                      contains: PARAMS_CONTAINS
                    }
                  ]
                }
              ]
            },
            { // could be a comma delimited list of params to a function call
              begin: /,/,
              relevance: 0
            },
            {
              match: /\s+/,
              relevance: 0
            },
            { // JSX
              variants: [
                { begin: FRAGMENT.begin, end: FRAGMENT.end },
                { match: XML_SELF_CLOSING },
                {
                  begin: XML_TAG.begin,
                  // we carefully check the opening tag to see if it truly
                  // is a tag and not a false positive
                  'on:begin': XML_TAG.isTrulyOpeningTag,
                  end: XML_TAG.end
                }
              ],
              subLanguage: 'xml',
              contains: [
                {
                  begin: XML_TAG.begin,
                  end: XML_TAG.end,
                  skip: true,
                  contains: ['self']
                }
              ]
            }
          ],
        },
        FUNCTION_DEFINITION,
        {
          // prevent this from getting swallowed up by function
          // since they appear "function like"
          beginKeywords: "while if switch catch for"
        },
        {
          // we have to count the parens to make sure we actually have the correct
          // bounding ( ).  There could be any number of sub-expressions inside
          // also surrounded by parens.
          begin: '\\b(?!function)' + hljs.UNDERSCORE_IDENT_RE +
            '\\(' + // first parens
            '[^()]*(\\(' +
              '[^()]*(\\(' +
                '[^()]*' +
              '\\)[^()]*)*' +
            '\\)[^()]*)*' +
            '\\)\\s*\\{', // end parens
          returnBegin:true,
          label: "func.def",
          contains: [
            PARAMS,
            hljs.inherit(hljs.TITLE_MODE, { begin: IDENT_RE$1, className: "title.function" })
          ]
        },
        // catch ... so it won't trigger the property rule below
        {
          match: /\.\.\./,
          relevance: 0
        },
        PROPERTY_ACCESS,
        // hack: prevents detection of keywords in some circumstances
        // .keyword()
        // $keyword = x
        {
          match: '\\$' + IDENT_RE$1,
          relevance: 0
        },
        {
          match: [ /\bconstructor(?=\s*\()/ ],
          className: { 1: "title.function" },
          contains: [ PARAMS ]
        },
        FUNCTION_CALL,
        UPPER_CASE_CONSTANT,
        CLASS_OR_EXTENDS,
        GETTER_OR_SETTER,
        {
          match: /\$[(.]/ // relevance booster for a pattern common to JS libs: `$(something)` and `$.something`
        }
      ]
    };
  }

  /*
  Language: JSON
  Description: JSON (JavaScript Object Notation) is a lightweight data-interchange format.
  Author: Ivan Sagalaev <maniac@softwaremaniacs.org>
  Website: http://www.json.org
  Category: common, protocols, web
  */

  function json(hljs) {
    const ATTRIBUTE = {
      className: 'attr',
      begin: /"(\\.|[^\\"\r\n])*"(?=\s*:)/,
      relevance: 1.01
    };
    const PUNCTUATION = {
      match: /[{}[\],:]/,
      className: "punctuation",
      relevance: 0
    };
    const LITERALS = [
      "true",
      "false",
      "null"
    ];
    // NOTE: normally we would rely on `keywords` for this but using a mode here allows us
    // - to use the very tight `illegal: \S` rule later to flag any other character
    // - as illegal indicating that despite looking like JSON we do not truly have
    // - JSON and thus improve false-positively greatly since JSON will try and claim
    // - all sorts of JSON looking stuff
    const LITERALS_MODE = {
      scope: "literal",
      beginKeywords: LITERALS.join(" "),
    };

    return {
      name: 'JSON',
      aliases: ['jsonc'],
      keywords:{
        literal: LITERALS,
      },
      contains: [
        ATTRIBUTE,
        PUNCTUATION,
        hljs.QUOTE_STRING_MODE,
        LITERALS_MODE,
        hljs.C_NUMBER_MODE,
        hljs.C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE
      ],
      illegal: '\\S'
    };
  }

  /*
   Language: Kotlin
   Description: Kotlin is an OSS statically typed programming language that targets the JVM, Android, JavaScript and Native.
   Author: Sergey Mashkov <cy6erGn0m@gmail.com>
   Website: https://kotlinlang.org
   Category: common
   */


  function kotlin(hljs) {
    const KEYWORDS = {
      keyword:
        'abstract as val var vararg get set class object open private protected public noinline '
        + 'crossinline dynamic final enum if else do while for when throw try catch finally '
        + 'import package is in fun override companion reified inline lateinit init '
        + 'interface annotation data sealed internal infix operator out by constructor super '
        + 'tailrec where const inner suspend typealias external expect actual',
      built_in:
        'Byte Short Char Int Long Boolean Float Double Void Unit Nothing',
      literal:
        'true false null'
    };
    const KEYWORDS_WITH_LABEL = {
      className: 'keyword',
      begin: /\b(break|continue|return|this)\b/,
      starts: { contains: [
        {
          className: 'symbol',
          begin: /@\w+/
        }
      ] }
    };
    const LABEL = {
      className: 'symbol',
      begin: hljs.UNDERSCORE_IDENT_RE + '@'
    };

    // for string templates
    const SUBST = {
      className: 'subst',
      begin: /\$\{/,
      end: /\}/,
      contains: [ hljs.C_NUMBER_MODE ]
    };
    const VARIABLE = {
      className: 'variable',
      begin: '\\$' + hljs.UNDERSCORE_IDENT_RE
    };
    const STRING = {
      className: 'string',
      variants: [
        {
          begin: '"""',
          end: '"""(?=[^"])',
          contains: [
            VARIABLE,
            SUBST
          ]
        },
        // Can't use built-in modes easily, as we want to use STRING in the meta
        // context as 'meta-string' and there's no syntax to remove explicitly set
        // classNames in built-in modes.
        {
          begin: '\'',
          end: '\'',
          illegal: /\n/,
          contains: [ hljs.BACKSLASH_ESCAPE ]
        },
        {
          begin: '"',
          end: '"',
          illegal: /\n/,
          contains: [
            hljs.BACKSLASH_ESCAPE,
            VARIABLE,
            SUBST
          ]
        }
      ]
    };
    SUBST.contains.push(STRING);

    const ANNOTATION_USE_SITE = {
      className: 'meta',
      begin: '@(?:file|property|field|get|set|receiver|param|setparam|delegate)\\s*:(?:\\s*' + hljs.UNDERSCORE_IDENT_RE + ')?'
    };
    const ANNOTATION = {
      className: 'meta',
      begin: '@' + hljs.UNDERSCORE_IDENT_RE,
      contains: [
        {
          begin: /\(/,
          end: /\)/,
          contains: [
            hljs.inherit(STRING, { className: 'string' }),
            "self"
          ]
        }
      ]
    };

    // https://kotlinlang.org/docs/reference/whatsnew11.html#underscores-in-numeric-literals
    // According to the doc above, the number mode of kotlin is the same as java 8,
    // so the code below is copied from java.js
    const KOTLIN_NUMBER_MODE = NUMERIC;
    const KOTLIN_NESTED_COMMENT = hljs.COMMENT(
      '/\\*', '\\*/',
      { contains: [ hljs.C_BLOCK_COMMENT_MODE ] }
    );
    const KOTLIN_PAREN_TYPE = { variants: [
      {
        className: 'type',
        begin: hljs.UNDERSCORE_IDENT_RE
      },
      {
        begin: /\(/,
        end: /\)/,
        contains: [] // defined later
      }
    ] };
    const KOTLIN_PAREN_TYPE2 = KOTLIN_PAREN_TYPE;
    KOTLIN_PAREN_TYPE2.variants[1].contains = [ KOTLIN_PAREN_TYPE ];
    KOTLIN_PAREN_TYPE.variants[1].contains = [ KOTLIN_PAREN_TYPE2 ];

    return {
      name: 'Kotlin',
      aliases: [
        'kt',
        'kts'
      ],
      keywords: KEYWORDS,
      contains: [
        hljs.COMMENT(
          '/\\*\\*',
          '\\*/',
          {
            relevance: 0,
            contains: [
              {
                className: 'doctag',
                begin: '@[A-Za-z]+'
              }
            ]
          }
        ),
        hljs.C_LINE_COMMENT_MODE,
        KOTLIN_NESTED_COMMENT,
        KEYWORDS_WITH_LABEL,
        LABEL,
        ANNOTATION_USE_SITE,
        ANNOTATION,
        {
          className: 'function',
          beginKeywords: 'fun',
          end: '[(]|$',
          returnBegin: true,
          excludeEnd: true,
          keywords: KEYWORDS,
          relevance: 5,
          contains: [
            {
              begin: hljs.UNDERSCORE_IDENT_RE + '\\s*\\(',
              returnBegin: true,
              relevance: 0,
              contains: [ hljs.UNDERSCORE_TITLE_MODE ]
            },
            {
              className: 'type',
              begin: /</,
              end: />/,
              keywords: 'reified',
              relevance: 0
            },
            {
              className: 'params',
              begin: /\(/,
              end: /\)/,
              endsParent: true,
              keywords: KEYWORDS,
              relevance: 0,
              contains: [
                {
                  begin: /:/,
                  end: /[=,\/]/,
                  endsWithParent: true,
                  contains: [
                    KOTLIN_PAREN_TYPE,
                    hljs.C_LINE_COMMENT_MODE,
                    KOTLIN_NESTED_COMMENT
                  ],
                  relevance: 0
                },
                hljs.C_LINE_COMMENT_MODE,
                KOTLIN_NESTED_COMMENT,
                ANNOTATION_USE_SITE,
                ANNOTATION,
                STRING,
                hljs.C_NUMBER_MODE
              ]
            },
            KOTLIN_NESTED_COMMENT
          ]
        },
        {
          begin: [
            /class|interface|trait/,
            /\s+/,
            hljs.UNDERSCORE_IDENT_RE
          ],
          beginScope: {
            3: "title.class"
          },
          keywords: 'class interface trait',
          end: /[:\{(]|$/,
          excludeEnd: true,
          illegal: 'extends implements',
          contains: [
            { beginKeywords: 'public protected internal private constructor' },
            hljs.UNDERSCORE_TITLE_MODE,
            {
              className: 'type',
              begin: /</,
              end: />/,
              excludeBegin: true,
              excludeEnd: true,
              relevance: 0
            },
            {
              className: 'type',
              begin: /[,:]\s*/,
              end: /[<\(,){\s]|$/,
              excludeBegin: true,
              returnEnd: true
            },
            ANNOTATION_USE_SITE,
            ANNOTATION
          ]
        },
        STRING,
        {
          className: 'meta',
          begin: "^#!/usr/bin/env",
          end: '$',
          illegal: '\n'
        },
        KOTLIN_NUMBER_MODE
      ]
    };
  }

  /*
  Language: Less
  Description: It's CSS, with just a little more.
  Author:   Max Mikhailov <seven.phases.max@gmail.com>
  Website: http://lesscss.org
  Category: common, css, web
  */


  /** @type LanguageFn */
  function less(hljs) {
    const modes = MODES(hljs);
    const PSEUDO_SELECTORS$1 = PSEUDO_SELECTORS;

    const AT_MODIFIERS = "and or not only";
    const IDENT_RE = '[\\w-]+'; // yes, Less identifiers may begin with a digit
    const INTERP_IDENT_RE = '(' + IDENT_RE + '|@\\{' + IDENT_RE + '\\})';

    /* Generic Modes */

    const RULES = []; const VALUE_MODES = []; // forward def. for recursive modes

    const STRING_MODE = function(c) {
      return {
      // Less strings are not multiline (also include '~' for more consistent coloring of "escaped" strings)
        className: 'string',
        begin: '~?' + c + '.*?' + c
      };
    };

    const IDENT_MODE = function(name, begin, relevance) {
      return {
        className: name,
        begin: begin,
        relevance: relevance
      };
    };

    const AT_KEYWORDS = {
      $pattern: /[a-z-]+/,
      keyword: AT_MODIFIERS,
      attribute: MEDIA_FEATURES.join(" ")
    };

    const PARENS_MODE = {
      // used only to properly balance nested parens inside mixin call, def. arg list
      begin: '\\(',
      end: '\\)',
      contains: VALUE_MODES,
      keywords: AT_KEYWORDS,
      relevance: 0
    };

    // generic Less highlighter (used almost everywhere except selectors):
    VALUE_MODES.push(
      hljs.C_LINE_COMMENT_MODE,
      hljs.C_BLOCK_COMMENT_MODE,
      STRING_MODE("'"),
      STRING_MODE('"'),
      modes.CSS_NUMBER_MODE, // fixme: it does not include dot for numbers like .5em :(
      {
        begin: '(url|data-uri)\\(',
        starts: {
          className: 'string',
          end: '[\\)\\n]',
          excludeEnd: true
        }
      },
      modes.HEXCOLOR,
      PARENS_MODE,
      IDENT_MODE('variable', '@@?' + IDENT_RE, 10),
      IDENT_MODE('variable', '@\\{' + IDENT_RE + '\\}'),
      IDENT_MODE('built_in', '~?`[^`]*?`'), // inline javascript (or whatever host language) *multiline* string
      { // @media features (it’s here to not duplicate things in AT_RULE_MODE with extra PARENS_MODE overriding):
        className: 'attribute',
        begin: IDENT_RE + '\\s*:',
        end: ':',
        returnBegin: true,
        excludeEnd: true
      },
      modes.IMPORTANT,
      { beginKeywords: 'and not' },
      modes.FUNCTION_DISPATCH
    );

    const VALUE_WITH_RULESETS = VALUE_MODES.concat({
      begin: /\{/,
      end: /\}/,
      contains: RULES
    });

    const MIXIN_GUARD_MODE = {
      beginKeywords: 'when',
      endsWithParent: true,
      contains: [ { beginKeywords: 'and not' } ].concat(VALUE_MODES) // using this form to override VALUE’s 'function' match
    };

    /* Rule-Level Modes */

    const RULE_MODE = {
      begin: INTERP_IDENT_RE + '\\s*:',
      returnBegin: true,
      end: /[;}]/,
      relevance: 0,
      contains: [
        { begin: /-(webkit|moz|ms|o)-/ },
        modes.CSS_VARIABLE,
        {
          className: 'attribute',
          begin: '\\b(' + ATTRIBUTES.join('|') + ')\\b',
          end: /(?=:)/,
          starts: {
            endsWithParent: true,
            illegal: '[<=$]',
            relevance: 0,
            contains: VALUE_MODES
          }
        }
      ]
    };

    const AT_RULE_MODE = {
      className: 'keyword',
      begin: '@(import|media|charset|font-face|(-[a-z]+-)?keyframes|supports|document|namespace|page|viewport|host)\\b',
      starts: {
        end: '[;{}]',
        keywords: AT_KEYWORDS,
        returnEnd: true,
        contains: VALUE_MODES,
        relevance: 0
      }
    };

    // variable definitions and calls
    const VAR_RULE_MODE = {
      className: 'variable',
      variants: [
        // using more strict pattern for higher relevance to increase chances of Less detection.
        // this is *the only* Less specific statement used in most of the sources, so...
        // (we’ll still often loose to the css-parser unless there's '//' comment,
        // simply because 1 variable just can't beat 99 properties :)
        {
          begin: '@' + IDENT_RE + '\\s*:',
          relevance: 15
        },
        { begin: '@' + IDENT_RE }
      ],
      starts: {
        end: '[;}]',
        returnEnd: true,
        contains: VALUE_WITH_RULESETS
      }
    };

    const SELECTOR_MODE = {
      // first parse unambiguous selectors (i.e. those not starting with tag)
      // then fall into the scary lookahead-discriminator variant.
      // this mode also handles mixin definitions and calls
      variants: [
        {
          begin: '[\\.#:&\\[>]',
          end: '[;{}]' // mixin calls end with ';'
        },
        {
          begin: INTERP_IDENT_RE,
          end: /\{/
        }
      ],
      returnBegin: true,
      returnEnd: true,
      illegal: '[<=\'$"]',
      relevance: 0,
      contains: [
        hljs.C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE,
        MIXIN_GUARD_MODE,
        IDENT_MODE('keyword', 'all\\b'),
        IDENT_MODE('variable', '@\\{' + IDENT_RE + '\\}'), // otherwise it’s identified as tag
        
        {
          begin: '\\b(' + TAGS.join('|') + ')\\b',
          className: 'selector-tag'
        },
        modes.CSS_NUMBER_MODE,
        IDENT_MODE('selector-tag', INTERP_IDENT_RE, 0),
        IDENT_MODE('selector-id', '#' + INTERP_IDENT_RE),
        IDENT_MODE('selector-class', '\\.' + INTERP_IDENT_RE, 0),
        IDENT_MODE('selector-tag', '&', 0),
        modes.ATTRIBUTE_SELECTOR_MODE,
        {
          className: 'selector-pseudo',
          begin: ':(' + PSEUDO_CLASSES.join('|') + ')'
        },
        {
          className: 'selector-pseudo',
          begin: ':(:)?(' + PSEUDO_ELEMENTS.join('|') + ')'
        },
        {
          begin: /\(/,
          end: /\)/,
          relevance: 0,
          contains: VALUE_WITH_RULESETS
        }, // argument list of parametric mixins
        { begin: '!important' }, // eat !important after mixin call or it will be colored as tag
        modes.FUNCTION_DISPATCH
      ]
    };

    const PSEUDO_SELECTOR_MODE = {
      begin: IDENT_RE + ':(:)?' + `(${PSEUDO_SELECTORS$1.join('|')})`,
      returnBegin: true,
      contains: [ SELECTOR_MODE ]
    };

    RULES.push(
      hljs.C_LINE_COMMENT_MODE,
      hljs.C_BLOCK_COMMENT_MODE,
      AT_RULE_MODE,
      VAR_RULE_MODE,
      PSEUDO_SELECTOR_MODE,
      RULE_MODE,
      SELECTOR_MODE,
      MIXIN_GUARD_MODE,
      modes.FUNCTION_DISPATCH
    );

    return {
      name: 'Less',
      case_insensitive: true,
      illegal: '[=>\'/<($"]',
      contains: RULES
    };
  }

  /*
  Language: Lua
  Description: Lua is a powerful, efficient, lightweight, embeddable scripting language.
  Author: Andrew Fedorov <dmmdrs@mail.ru>
  Category: common, gaming, scripting
  Website: https://www.lua.org
  */

  function lua(hljs) {
    const OPENING_LONG_BRACKET = '\\[=*\\[';
    const CLOSING_LONG_BRACKET = '\\]=*\\]';
    const LONG_BRACKETS = {
      begin: OPENING_LONG_BRACKET,
      end: CLOSING_LONG_BRACKET,
      contains: [ 'self' ]
    };
    const COMMENTS = [
      hljs.COMMENT('--(?!' + OPENING_LONG_BRACKET + ')', '$'),
      hljs.COMMENT(
        '--' + OPENING_LONG_BRACKET,
        CLOSING_LONG_BRACKET,
        {
          contains: [ LONG_BRACKETS ],
          relevance: 10
        }
      )
    ];
    return {
      name: 'Lua',
      keywords: {
        $pattern: hljs.UNDERSCORE_IDENT_RE,
        literal: "true false nil",
        keyword: "and break do else elseif end for goto if in local not or repeat return then until while",
        built_in:
          // Metatags and globals:
          '_G _ENV _VERSION __index __newindex __mode __call __metatable __tostring __len '
          + '__gc __add __sub __mul __div __mod __pow __concat __unm __eq __lt __le assert '
          // Standard methods and properties:
          + 'collectgarbage dofile error getfenv getmetatable ipairs load loadfile loadstring '
          + 'module next pairs pcall print rawequal rawget rawset require select setfenv '
          + 'setmetatable tonumber tostring type unpack xpcall arg self '
          // Library methods and properties (one line per library):
          + 'coroutine resume yield status wrap create running debug getupvalue '
          + 'debug sethook getmetatable gethook setmetatable setlocal traceback setfenv getinfo setupvalue getlocal getregistry getfenv '
          + 'io lines write close flush open output type read stderr stdin input stdout popen tmpfile '
          + 'math log max acos huge ldexp pi cos tanh pow deg tan cosh sinh random randomseed frexp ceil floor rad abs sqrt modf asin min mod fmod log10 atan2 exp sin atan '
          + 'os exit setlocale date getenv difftime remove time clock tmpname rename execute package preload loadlib loaded loaders cpath config path seeall '
          + 'string sub upper len gfind rep find match char dump gmatch reverse byte format gsub lower '
          + 'table setn insert getn foreachi maxn foreach concat sort remove'
      },
      contains: COMMENTS.concat([
        {
          className: 'function',
          beginKeywords: 'function',
          end: '\\)',
          contains: [
            hljs.inherit(hljs.TITLE_MODE, { begin: '([_a-zA-Z]\\w*\\.)*([_a-zA-Z]\\w*:)?[_a-zA-Z]\\w*' }),
            {
              className: 'params',
              begin: '\\(',
              endsWithParent: true,
              contains: COMMENTS
            }
          ].concat(COMMENTS)
        },
        hljs.C_NUMBER_MODE,
        hljs.APOS_STRING_MODE,
        hljs.QUOTE_STRING_MODE,
        {
          className: 'string',
          begin: OPENING_LONG_BRACKET,
          end: CLOSING_LONG_BRACKET,
          contains: [ LONG_BRACKETS ],
          relevance: 5
        }
      ])
    };
  }

  /*
  Language: Makefile
  Author: Ivan Sagalaev <maniac@softwaremaniacs.org>
  Contributors: Joël Porquet <joel@porquet.org>
  Website: https://www.gnu.org/software/make/manual/html_node/Introduction.html
  Category: common, build-system
  */

  function makefile(hljs) {
    /* Variables: simple (eg $(var)) and special (eg $@) */
    const VARIABLE = {
      className: 'variable',
      variants: [
        {
          begin: '\\$\\(' + hljs.UNDERSCORE_IDENT_RE + '\\)',
          contains: [ hljs.BACKSLASH_ESCAPE ]
        },
        { begin: /\$[@%<?\^\+\*]/ }
      ]
    };
    /* Quoted string with variables inside */
    const QUOTE_STRING = {
      className: 'string',
      begin: /"/,
      end: /"/,
      contains: [
        hljs.BACKSLASH_ESCAPE,
        VARIABLE
      ]
    };
    /* Function: $(func arg,...) */
    const FUNC = {
      className: 'variable',
      begin: /\$\([\w-]+\s/,
      end: /\)/,
      keywords: { built_in:
          'subst patsubst strip findstring filter filter-out sort '
          + 'word wordlist firstword lastword dir notdir suffix basename '
          + 'addsuffix addprefix join wildcard realpath abspath error warning '
          + 'shell origin flavor foreach if or and call eval file value' },
      contains: [ VARIABLE ]
    };
    /* Variable assignment */
    const ASSIGNMENT = { begin: '^' + hljs.UNDERSCORE_IDENT_RE + '\\s*(?=[:+?]?=)' };
    /* Meta targets (.PHONY) */
    const META = {
      className: 'meta',
      begin: /^\.PHONY:/,
      end: /$/,
      keywords: {
        $pattern: /[\.\w]+/,
        keyword: '.PHONY'
      }
    };
    /* Targets */
    const TARGET = {
      className: 'section',
      begin: /^[^\s]+:/,
      end: /$/,
      contains: [ VARIABLE ]
    };
    return {
      name: 'Makefile',
      aliases: [
        'mk',
        'mak',
        'make',
      ],
      keywords: {
        $pattern: /[\w-]+/,
        keyword: 'define endef undefine ifdef ifndef ifeq ifneq else endif '
        + 'include -include sinclude override export unexport private vpath'
      },
      contains: [
        hljs.HASH_COMMENT_MODE,
        VARIABLE,
        QUOTE_STRING,
        FUNC,
        ASSIGNMENT,
        META,
        TARGET
      ]
    };
  }

  /*
  Language: HTML, XML
  Website: https://www.w3.org/XML/
  Category: common, web
  Audit: 2020
  */

  /** @type LanguageFn */
  function xml(hljs) {
    const regex = hljs.regex;
    // XML names can have the following additional letters: https://www.w3.org/TR/xml/#NT-NameChar
    // OTHER_NAME_CHARS = /[:\-.0-9\u00B7\u0300-\u036F\u203F-\u2040]/;
    // Element names start with NAME_START_CHAR followed by optional other Unicode letters, ASCII digits, hyphens, underscores, and periods
    // const TAG_NAME_RE = regex.concat(/[A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/, regex.optional(/[A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\-.0-9\u00B7\u0300-\u036F\u203F-\u2040]*:/), /[A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\-.0-9\u00B7\u0300-\u036F\u203F-\u2040]*/);;
    // const XML_IDENT_RE = /[A-Z_a-z:\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\-.0-9\u00B7\u0300-\u036F\u203F-\u2040]+/;
    // const TAG_NAME_RE = regex.concat(/[A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/, regex.optional(/[A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\-.0-9\u00B7\u0300-\u036F\u203F-\u2040]*:/), /[A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\-.0-9\u00B7\u0300-\u036F\u203F-\u2040]*/);
    // however, to cater for performance and more Unicode support rely simply on the Unicode letter class
    const TAG_NAME_RE = regex.concat(/[\p{L}_]/u, regex.optional(/[\p{L}0-9_.-]*:/u), /[\p{L}0-9_.-]*/u);
    const XML_IDENT_RE = /[\p{L}0-9._:-]+/u;
    const XML_ENTITIES = {
      className: 'symbol',
      begin: /&[a-z]+;|&#[0-9]+;|&#x[a-f0-9]+;/
    };
    const XML_META_KEYWORDS = {
      begin: /\s/,
      contains: [
        {
          className: 'keyword',
          begin: /#?[a-z_][a-z1-9_-]+/,
          illegal: /\n/
        }
      ]
    };
    const XML_META_PAR_KEYWORDS = hljs.inherit(XML_META_KEYWORDS, {
      begin: /\(/,
      end: /\)/
    });
    const APOS_META_STRING_MODE = hljs.inherit(hljs.APOS_STRING_MODE, { className: 'string' });
    const QUOTE_META_STRING_MODE = hljs.inherit(hljs.QUOTE_STRING_MODE, { className: 'string' });
    const TAG_INTERNALS = {
      endsWithParent: true,
      illegal: /</,
      relevance: 0,
      contains: [
        {
          className: 'attr',
          begin: XML_IDENT_RE,
          relevance: 0
        },
        {
          begin: /=\s*/,
          relevance: 0,
          contains: [
            {
              className: 'string',
              endsParent: true,
              variants: [
                {
                  begin: /"/,
                  end: /"/,
                  contains: [ XML_ENTITIES ]
                },
                {
                  begin: /'/,
                  end: /'/,
                  contains: [ XML_ENTITIES ]
                },
                { begin: /[^\s"'=<>`]+/ }
              ]
            }
          ]
        }
      ]
    };
    return {
      name: 'HTML, XML',
      aliases: [
        'html',
        'xhtml',
        'rss',
        'atom',
        'xjb',
        'xsd',
        'xsl',
        'plist',
        'wsf',
        'svg'
      ],
      case_insensitive: true,
      unicodeRegex: true,
      contains: [
        {
          className: 'meta',
          begin: /<![a-z]/,
          end: />/,
          relevance: 10,
          contains: [
            XML_META_KEYWORDS,
            QUOTE_META_STRING_MODE,
            APOS_META_STRING_MODE,
            XML_META_PAR_KEYWORDS,
            {
              begin: /\[/,
              end: /\]/,
              contains: [
                {
                  className: 'meta',
                  begin: /<![a-z]/,
                  end: />/,
                  contains: [
                    XML_META_KEYWORDS,
                    XML_META_PAR_KEYWORDS,
                    QUOTE_META_STRING_MODE,
                    APOS_META_STRING_MODE
                  ]
                }
              ]
            }
          ]
        },
        hljs.COMMENT(
          /<!--/,
          /-->/,
          { relevance: 10 }
        ),
        {
          begin: /<!\[CDATA\[/,
          end: /\]\]>/,
          relevance: 10
        },
        XML_ENTITIES,
        // xml processing instructions
        {
          className: 'meta',
          end: /\?>/,
          variants: [
            {
              begin: /<\?xml/,
              relevance: 10,
              contains: [
                QUOTE_META_STRING_MODE
              ]
            },
            {
              begin: /<\?[a-z][a-z0-9]+/,
            }
          ]

        },
        {
          className: 'tag',
          /*
          The lookahead pattern (?=...) ensures that 'begin' only matches
          '<style' as a single word, followed by a whitespace or an
          ending bracket.
          */
          begin: /<style(?=\s|>)/,
          end: />/,
          keywords: { name: 'style' },
          contains: [ TAG_INTERNALS ],
          starts: {
            end: /<\/style>/,
            returnEnd: true,
            subLanguage: [
              'css',
              'xml'
            ]
          }
        },
        {
          className: 'tag',
          // See the comment in the <style tag about the lookahead pattern
          begin: /<script(?=\s|>)/,
          end: />/,
          keywords: { name: 'script' },
          contains: [ TAG_INTERNALS ],
          starts: {
            end: /<\/script>/,
            returnEnd: true,
            subLanguage: [
              'javascript',
              'handlebars',
              'xml'
            ]
          }
        },
        // we need this for now for jSX
        {
          className: 'tag',
          begin: /<>|<\/>/
        },
        // open tag
        {
          className: 'tag',
          begin: regex.concat(
            /</,
            regex.lookahead(regex.concat(
              TAG_NAME_RE,
              // <tag/>
              // <tag>
              // <tag ...
              regex.either(/\/>/, />/, /\s/)
            ))
          ),
          end: /\/?>/,
          contains: [
            {
              className: 'name',
              begin: TAG_NAME_RE,
              relevance: 0,
              starts: TAG_INTERNALS
            }
          ]
        },
        // close tag
        {
          className: 'tag',
          begin: regex.concat(
            /<\//,
            regex.lookahead(regex.concat(
              TAG_NAME_RE, />/
            ))
          ),
          contains: [
            {
              className: 'name',
              begin: TAG_NAME_RE,
              relevance: 0
            },
            {
              begin: />/,
              relevance: 0,
              endsParent: true
            }
          ]
        }
      ]
    };
  }

  /*
  Language: Markdown
  Requires: xml.js
  Author: John Crepezzi <john.crepezzi@gmail.com>
  Website: https://daringfireball.net/projects/markdown/
  Category: common, markup
  */

  function markdown(hljs) {
    const regex = hljs.regex;
    const INLINE_HTML = {
      begin: /<\/?[A-Za-z_]/,
      end: '>',
      subLanguage: 'xml',
      relevance: 0
    };
    const HORIZONTAL_RULE = {
      begin: '^[-\\*]{3,}',
      end: '$'
    };
    const CODE = {
      className: 'code',
      variants: [
        // TODO: fix to allow these to work with sublanguage also
        { begin: '(`{3,})[^`](.|\\n)*?\\1`*[ ]*' },
        { begin: '(~{3,})[^~](.|\\n)*?\\1~*[ ]*' },
        // needed to allow markdown as a sublanguage to work
        {
          begin: '```',
          end: '```+[ ]*$'
        },
        {
          begin: '~~~',
          end: '~~~+[ ]*$'
        },
        { begin: '`.+?`' },
        {
          begin: '(?=^( {4}|\\t))',
          // use contains to gobble up multiple lines to allow the block to be whatever size
          // but only have a single open/close tag vs one per line
          contains: [
            {
              begin: '^( {4}|\\t)',
              end: '(\\n)$'
            }
          ],
          relevance: 0
        }
      ]
    };
    const LIST = {
      className: 'bullet',
      begin: '^[ \t]*([*+-]|(\\d+\\.))(?=\\s+)',
      end: '\\s+',
      excludeEnd: true
    };
    const LINK_REFERENCE = {
      begin: /^\[[^\n]+\]:/,
      returnBegin: true,
      contains: [
        {
          className: 'symbol',
          begin: /\[/,
          end: /\]/,
          excludeBegin: true,
          excludeEnd: true
        },
        {
          className: 'link',
          begin: /:\s*/,
          end: /$/,
          excludeBegin: true
        }
      ]
    };
    const URL_SCHEME = /[A-Za-z][A-Za-z0-9+.-]*/;
    const LINK = {
      variants: [
        // too much like nested array access in so many languages
        // to have any real relevance
        {
          begin: /\[.+?\]\[.*?\]/,
          relevance: 0
        },
        // popular internet URLs
        {
          begin: /\[.+?\]\(((data|javascript|mailto):|(?:http|ftp)s?:\/\/).*?\)/,
          relevance: 2
        },
        {
          begin: regex.concat(/\[.+?\]\(/, URL_SCHEME, /:\/\/.*?\)/),
          relevance: 2
        },
        // relative urls
        {
          begin: /\[.+?\]\([./?&#].*?\)/,
          relevance: 1
        },
        // whatever else, lower relevance (might not be a link at all)
        {
          begin: /\[.*?\]\(.*?\)/,
          relevance: 0
        }
      ],
      returnBegin: true,
      contains: [
        {
          // empty strings for alt or link text
          match: /\[(?=\])/ },
        {
          className: 'string',
          relevance: 0,
          begin: '\\[',
          end: '\\]',
          excludeBegin: true,
          returnEnd: true
        },
        {
          className: 'link',
          relevance: 0,
          begin: '\\]\\(',
          end: '\\)',
          excludeBegin: true,
          excludeEnd: true
        },
        {
          className: 'symbol',
          relevance: 0,
          begin: '\\]\\[',
          end: '\\]',
          excludeBegin: true,
          excludeEnd: true
        }
      ]
    };
    const BOLD = {
      className: 'strong',
      contains: [], // defined later
      variants: [
        {
          begin: /_{2}(?!\s)/,
          end: /_{2}/
        },
        {
          begin: /\*{2}(?!\s)/,
          end: /\*{2}/
        }
      ]
    };
    const ITALIC = {
      className: 'emphasis',
      contains: [], // defined later
      variants: [
        {
          begin: /\*(?![*\s])/,
          end: /\*/
        },
        {
          begin: /_(?![_\s])/,
          end: /_/,
          relevance: 0
        }
      ]
    };

    // 3 level deep nesting is not allowed because it would create confusion
    // in cases like `***testing***` because where we don't know if the last
    // `***` is starting a new bold/italic or finishing the last one
    const BOLD_WITHOUT_ITALIC = hljs.inherit(BOLD, { contains: [] });
    const ITALIC_WITHOUT_BOLD = hljs.inherit(ITALIC, { contains: [] });
    BOLD.contains.push(ITALIC_WITHOUT_BOLD);
    ITALIC.contains.push(BOLD_WITHOUT_ITALIC);

    let CONTAINABLE = [
      INLINE_HTML,
      LINK
    ];

    [
      BOLD,
      ITALIC,
      BOLD_WITHOUT_ITALIC,
      ITALIC_WITHOUT_BOLD
    ].forEach(m => {
      m.contains = m.contains.concat(CONTAINABLE);
    });

    CONTAINABLE = CONTAINABLE.concat(BOLD, ITALIC);

    const HEADER = {
      className: 'section',
      variants: [
        {
          begin: '^#{1,6}',
          end: '$',
          contains: CONTAINABLE
        },
        {
          begin: '(?=^.+?\\n[=-]{2,}$)',
          contains: [
            { begin: '^[=-]*$' },
            {
              begin: '^',
              end: "\\n",
              contains: CONTAINABLE
            }
          ]
        }
      ]
    };

    const BLOCKQUOTE = {
      className: 'quote',
      begin: '^>\\s+',
      contains: CONTAINABLE,
      end: '$'
    };

    const ENTITY = {
      //https://spec.commonmark.org/0.31.2/#entity-references
      scope: 'literal',
      match: /&([a-zA-Z0-9]+|#[0-9]{1,7}|#[Xx][0-9a-fA-F]{1,6});/
    };

    return {
      name: 'Markdown',
      aliases: [
        'md',
        'mkdown',
        'mkd'
      ],
      contains: [
        HEADER,
        INLINE_HTML,
        LIST,
        BOLD,
        ITALIC,
        BLOCKQUOTE,
        CODE,
        HORIZONTAL_RULE,
        LINK,
        LINK_REFERENCE,
        ENTITY
      ]
    };
  }

  /*
  Language: Objective-C
  Author: Valerii Hiora <valerii.hiora@gmail.com>
  Contributors: Angel G. Olloqui <angelgarcia.mail@gmail.com>, Matt Diephouse <matt@diephouse.com>, Andrew Farmer <ahfarmer@gmail.com>, Minh Nguyễn <mxn@1ec5.org>
  Website: https://developer.apple.com/documentation/objectivec
  Category: common
  */

  function objectivec(hljs) {
    const API_CLASS = {
      className: 'built_in',
      begin: '\\b(AV|CA|CF|CG|CI|CL|CM|CN|CT|MK|MP|MTK|MTL|NS|SCN|SK|UI|WK|XC)\\w+'
    };
    const IDENTIFIER_RE = /[a-zA-Z@][a-zA-Z0-9_]*/;
    const TYPES = [
      "int",
      "float",
      "char",
      "unsigned",
      "signed",
      "short",
      "long",
      "double",
      "wchar_t",
      "unichar",
      "void",
      "bool",
      "BOOL",
      "id|0",
      "_Bool"
    ];
    const KWS = [
      "while",
      "export",
      "sizeof",
      "typedef",
      "const",
      "struct",
      "for",
      "union",
      "volatile",
      "static",
      "mutable",
      "if",
      "do",
      "return",
      "goto",
      "enum",
      "else",
      "break",
      "extern",
      "asm",
      "case",
      "default",
      "register",
      "explicit",
      "typename",
      "switch",
      "continue",
      "inline",
      "readonly",
      "assign",
      "readwrite",
      "self",
      "@synchronized",
      "id",
      "typeof",
      "nonatomic",
      "IBOutlet",
      "IBAction",
      "strong",
      "weak",
      "copy",
      "in",
      "out",
      "inout",
      "bycopy",
      "byref",
      "oneway",
      "__strong",
      "__weak",
      "__block",
      "__autoreleasing",
      "@private",
      "@protected",
      "@public",
      "@try",
      "@property",
      "@end",
      "@throw",
      "@catch",
      "@finally",
      "@autoreleasepool",
      "@synthesize",
      "@dynamic",
      "@selector",
      "@optional",
      "@required",
      "@encode",
      "@package",
      "@import",
      "@defs",
      "@compatibility_alias",
      "__bridge",
      "__bridge_transfer",
      "__bridge_retained",
      "__bridge_retain",
      "__covariant",
      "__contravariant",
      "__kindof",
      "_Nonnull",
      "_Nullable",
      "_Null_unspecified",
      "__FUNCTION__",
      "__PRETTY_FUNCTION__",
      "__attribute__",
      "getter",
      "setter",
      "retain",
      "unsafe_unretained",
      "nonnull",
      "nullable",
      "null_unspecified",
      "null_resettable",
      "class",
      "instancetype",
      "NS_DESIGNATED_INITIALIZER",
      "NS_UNAVAILABLE",
      "NS_REQUIRES_SUPER",
      "NS_RETURNS_INNER_POINTER",
      "NS_INLINE",
      "NS_AVAILABLE",
      "NS_DEPRECATED",
      "NS_ENUM",
      "NS_OPTIONS",
      "NS_SWIFT_UNAVAILABLE",
      "NS_ASSUME_NONNULL_BEGIN",
      "NS_ASSUME_NONNULL_END",
      "NS_REFINED_FOR_SWIFT",
      "NS_SWIFT_NAME",
      "NS_SWIFT_NOTHROW",
      "NS_DURING",
      "NS_HANDLER",
      "NS_ENDHANDLER",
      "NS_VALUERETURN",
      "NS_VOIDRETURN"
    ];
    const LITERALS = [
      "false",
      "true",
      "FALSE",
      "TRUE",
      "nil",
      "YES",
      "NO",
      "NULL"
    ];
    const BUILT_INS = [
      "dispatch_once_t",
      "dispatch_queue_t",
      "dispatch_sync",
      "dispatch_async",
      "dispatch_once"
    ];
    const KEYWORDS = {
      "variable.language": [
        "this",
        "super"
      ],
      $pattern: IDENTIFIER_RE,
      keyword: KWS,
      literal: LITERALS,
      built_in: BUILT_INS,
      type: TYPES
    };
    const CLASS_KEYWORDS = {
      $pattern: IDENTIFIER_RE,
      keyword: [
        "@interface",
        "@class",
        "@protocol",
        "@implementation"
      ]
    };
    return {
      name: 'Objective-C',
      aliases: [
        'mm',
        'objc',
        'obj-c',
        'obj-c++',
        'objective-c++'
      ],
      keywords: KEYWORDS,
      illegal: '</',
      contains: [
        API_CLASS,
        hljs.C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE,
        hljs.C_NUMBER_MODE,
        hljs.QUOTE_STRING_MODE,
        hljs.APOS_STRING_MODE,
        {
          className: 'string',
          variants: [
            {
              begin: '@"',
              end: '"',
              illegal: '\\n',
              contains: [ hljs.BACKSLASH_ESCAPE ]
            }
          ]
        },
        {
          className: 'meta',
          begin: /#\s*[a-z]+\b/,
          end: /$/,
          keywords: { keyword:
              'if else elif endif define undef warning error line '
              + 'pragma ifdef ifndef include' },
          contains: [
            {
              begin: /\\\n/,
              relevance: 0
            },
            hljs.inherit(hljs.QUOTE_STRING_MODE, { className: 'string' }),
            {
              className: 'string',
              begin: /<.*?>/,
              end: /$/,
              illegal: '\\n'
            },
            hljs.C_LINE_COMMENT_MODE,
            hljs.C_BLOCK_COMMENT_MODE
          ]
        },
        {
          className: 'class',
          begin: '(' + CLASS_KEYWORDS.keyword.join('|') + ')\\b',
          end: /(\{|$)/,
          excludeEnd: true,
          keywords: CLASS_KEYWORDS,
          contains: [ hljs.UNDERSCORE_TITLE_MODE ]
        },
        {
          begin: '\\.' + hljs.UNDERSCORE_IDENT_RE,
          relevance: 0
        }
      ]
    };
  }

  /*
  Language: Perl
  Author: Peter Leonov <gojpeg@yandex.ru>
  Website: https://www.perl.org
  Category: common
  */

  /** @type LanguageFn */
  function perl(hljs) {
    const regex = hljs.regex;
    const KEYWORDS = [
      'abs',
      'accept',
      'alarm',
      'and',
      'atan2',
      'bind',
      'binmode',
      'bless',
      'break',
      'caller',
      'chdir',
      'chmod',
      'chomp',
      'chop',
      'chown',
      'chr',
      'chroot',
      'class',
      'close',
      'closedir',
      'connect',
      'continue',
      'cos',
      'crypt',
      'dbmclose',
      'dbmopen',
      'defined',
      'delete',
      'die',
      'do',
      'dump',
      'each',
      'else',
      'elsif',
      'endgrent',
      'endhostent',
      'endnetent',
      'endprotoent',
      'endpwent',
      'endservent',
      'eof',
      'eval',
      'exec',
      'exists',
      'exit',
      'exp',
      'fcntl',
      'field',
      'fileno',
      'flock',
      'for',
      'foreach',
      'fork',
      'format',
      'formline',
      'getc',
      'getgrent',
      'getgrgid',
      'getgrnam',
      'gethostbyaddr',
      'gethostbyname',
      'gethostent',
      'getlogin',
      'getnetbyaddr',
      'getnetbyname',
      'getnetent',
      'getpeername',
      'getpgrp',
      'getpriority',
      'getprotobyname',
      'getprotobynumber',
      'getprotoent',
      'getpwent',
      'getpwnam',
      'getpwuid',
      'getservbyname',
      'getservbyport',
      'getservent',
      'getsockname',
      'getsockopt',
      'given',
      'glob',
      'gmtime',
      'goto',
      'grep',
      'gt',
      'hex',
      'if',
      'index',
      'int',
      'ioctl',
      'join',
      'keys',
      'kill',
      'last',
      'lc',
      'lcfirst',
      'length',
      'link',
      'listen',
      'local',
      'localtime',
      'log',
      'lstat',
      'lt',
      'ma',
      'map',
      'method',
      'mkdir',
      'msgctl',
      'msgget',
      'msgrcv',
      'msgsnd',
      'my',
      'ne',
      'next',
      'no',
      'not',
      'oct',
      'open',
      'opendir',
      'or',
      'ord',
      'our',
      'pack',
      'package',
      'pipe',
      'pop',
      'pos',
      'print',
      'printf',
      'prototype',
      'push',
      'q|0',
      'qq',
      'quotemeta',
      'qw',
      'qx',
      'rand',
      'read',
      'readdir',
      'readline',
      'readlink',
      'readpipe',
      'recv',
      'redo',
      'ref',
      'rename',
      'require',
      'reset',
      'return',
      'reverse',
      'rewinddir',
      'rindex',
      'rmdir',
      'say',
      'scalar',
      'seek',
      'seekdir',
      'select',
      'semctl',
      'semget',
      'semop',
      'send',
      'setgrent',
      'sethostent',
      'setnetent',
      'setpgrp',
      'setpriority',
      'setprotoent',
      'setpwent',
      'setservent',
      'setsockopt',
      'shift',
      'shmctl',
      'shmget',
      'shmread',
      'shmwrite',
      'shutdown',
      'sin',
      'sleep',
      'socket',
      'socketpair',
      'sort',
      'splice',
      'split',
      'sprintf',
      'sqrt',
      'srand',
      'stat',
      'state',
      'study',
      'sub',
      'substr',
      'symlink',
      'syscall',
      'sysopen',
      'sysread',
      'sysseek',
      'system',
      'syswrite',
      'tell',
      'telldir',
      'tie',
      'tied',
      'time',
      'times',
      'tr',
      'truncate',
      'uc',
      'ucfirst',
      'umask',
      'undef',
      'unless',
      'unlink',
      'unpack',
      'unshift',
      'untie',
      'until',
      'use',
      'utime',
      'values',
      'vec',
      'wait',
      'waitpid',
      'wantarray',
      'warn',
      'when',
      'while',
      'write',
      'x|0',
      'xor',
      'y|0'
    ];

    // https://perldoc.perl.org/perlre#Modifiers
    const REGEX_MODIFIERS = /[dualxmsipngr]{0,12}/; // aa and xx are valid, making max length 12
    const PERL_KEYWORDS = {
      $pattern: /[\w.]+/,
      keyword: KEYWORDS.join(" ")
    };
    const SUBST = {
      className: 'subst',
      begin: '[$@]\\{',
      end: '\\}',
      keywords: PERL_KEYWORDS
    };
    const METHOD = {
      begin: /->\{/,
      end: /\}/
      // contains defined later
    };
    const ATTR = {
      scope: 'attr',
      match: /\s+:\s*\w+(\s*\(.*?\))?/,
    };
    const VAR = {
      scope: 'variable',
      variants: [
        { begin: /\$\d/ },
        { begin: regex.concat(
          /[$%@](?!")(\^\w\b|#\w+(::\w+)*|\{\w+\}|\w+(::\w*)*)/,
          // negative look-ahead tries to avoid matching patterns that are not
          // Perl at all like $ident$, @ident@, etc.
          `(?![A-Za-z])(?![@$%])`
          )
        },
        {
          // Only $= is a special Perl variable and one can't declare @= or %=.
          begin: /[$%@](?!")[^\s\w{=]|\$=/,
          relevance: 0
        }
      ],
      contains: [ ATTR ],
    };
    const NUMBER = {
      className: 'number',
      variants: [
        // decimal numbers:
        // include the case where a number starts with a dot (eg. .9), and
        // the leading 0? avoids mixing the first and second match on 0.x cases
        { match: /0?\.[0-9][0-9_]+\b/ },
        // include the special versioned number (eg. v5.38)
        { match: /\bv?(0|[1-9][0-9_]*(\.[0-9_]+)?|[1-9][0-9_]*)\b/ },
        // non-decimal numbers:
        { match: /\b0[0-7][0-7_]*\b/ },
        { match: /\b0x[0-9a-fA-F][0-9a-fA-F_]*\b/ },
        { match: /\b0b[0-1][0-1_]*\b/ },
      ],
      relevance: 0
    };
    const STRING_CONTAINS = [
      hljs.BACKSLASH_ESCAPE,
      SUBST,
      VAR
    ];
    const REGEX_DELIMS = [
      /!/,
      /\//,
      /\|/,
      /\?/,
      /'/,
      /"/, // valid but infrequent and weird
      /#/ // valid but infrequent and weird
    ];
    /**
     * @param {string|RegExp} prefix
     * @param {string|RegExp} open
     * @param {string|RegExp} close
     */
    const PAIRED_DOUBLE_RE = (prefix, open, close = '\\1') => {
      const middle = (close === '\\1')
        ? close
        : regex.concat(close, open);
      return regex.concat(
        regex.concat("(?:", prefix, ")"),
        open,
        /(?:\\.|[^\\\/])*?/,
        middle,
        /(?:\\.|[^\\\/])*?/,
        close,
        REGEX_MODIFIERS
      );
    };
    /**
     * @param {string|RegExp} prefix
     * @param {string|RegExp} open
     * @param {string|RegExp} close
     */
    const PAIRED_RE = (prefix, open, close) => {
      return regex.concat(
        regex.concat("(?:", prefix, ")"),
        open,
        /(?:\\.|[^\\\/])*?/,
        close,
        REGEX_MODIFIERS
      );
    };
    const PERL_DEFAULT_CONTAINS = [
      VAR,
      hljs.HASH_COMMENT_MODE,
      hljs.COMMENT(
        /^=\w/,
        /=cut/,
        { endsWithParent: true }
      ),
      METHOD,
      {
        className: 'string',
        contains: STRING_CONTAINS,
        variants: [
          {
            begin: 'q[qwxr]?\\s*\\(',
            end: '\\)',
            relevance: 5
          },
          {
            begin: 'q[qwxr]?\\s*\\[',
            end: '\\]',
            relevance: 5
          },
          {
            begin: 'q[qwxr]?\\s*\\{',
            end: '\\}',
            relevance: 5
          },
          {
            begin: 'q[qwxr]?\\s*\\|',
            end: '\\|',
            relevance: 5
          },
          {
            begin: 'q[qwxr]?\\s*<',
            end: '>',
            relevance: 5
          },
          {
            begin: 'qw\\s+q',
            end: 'q',
            relevance: 5
          },
          {
            begin: '\'',
            end: '\'',
            contains: [ hljs.BACKSLASH_ESCAPE ]
          },
          {
            begin: '"',
            end: '"'
          },
          {
            begin: '`',
            end: '`',
            contains: [ hljs.BACKSLASH_ESCAPE ]
          },
          {
            begin: /\{\w+\}/,
            relevance: 0
          },
          {
            begin: '-?\\w+\\s*=>',
            relevance: 0
          }
        ]
      },
      NUMBER,
      { // regexp container
        begin: '(\\/\\/|' + hljs.RE_STARTERS_RE + '|\\b(split|return|print|reverse|grep)\\b)\\s*',
        keywords: 'split return print reverse grep',
        relevance: 0,
        contains: [
          hljs.HASH_COMMENT_MODE,
          {
            className: 'regexp',
            variants: [
              // allow matching common delimiters
              { begin: PAIRED_DOUBLE_RE("s|tr|y", regex.either(...REGEX_DELIMS, { capture: true })) },
              // and then paired delmis
              { begin: PAIRED_DOUBLE_RE("s|tr|y", "\\(", "\\)") },
              { begin: PAIRED_DOUBLE_RE("s|tr|y", "\\[", "\\]") },
              { begin: PAIRED_DOUBLE_RE("s|tr|y", "\\{", "\\}") }
            ],
            relevance: 2
          },
          {
            className: 'regexp',
            variants: [
              {
                // could be a comment in many languages so do not count
                // as relevant
                begin: /(m|qr)\/\//,
                relevance: 0
              },
              // prefix is optional with /regex/
              { begin: PAIRED_RE("(?:m|qr)?", /\//, /\//) },
              // allow matching common delimiters
              { begin: PAIRED_RE("m|qr", regex.either(...REGEX_DELIMS, { capture: true }), /\1/) },
              // allow common paired delmins
              { begin: PAIRED_RE("m|qr", /\(/, /\)/) },
              { begin: PAIRED_RE("m|qr", /\[/, /\]/) },
              { begin: PAIRED_RE("m|qr", /\{/, /\}/) }
            ]
          }
        ]
      },
      {
        className: 'function',
        beginKeywords: 'sub method',
        end: '(\\s*\\(.*?\\))?[;{]',
        excludeEnd: true,
        relevance: 5,
        contains: [ hljs.TITLE_MODE, ATTR ]
      },
      {
        className: 'class',
        beginKeywords: 'class',
        end: '[;{]',
        excludeEnd: true,
        relevance: 5,
        contains: [ hljs.TITLE_MODE, ATTR, NUMBER ]
      },
      {
        begin: '-\\w\\b',
        relevance: 0
      },
      {
        begin: "^__DATA__$",
        end: "^__END__$",
        subLanguage: 'mojolicious',
        contains: [
          {
            begin: "^@@.*",
            end: "$",
            className: "comment"
          }
        ]
      }
    ];
    SUBST.contains = PERL_DEFAULT_CONTAINS;
    METHOD.contains = PERL_DEFAULT_CONTAINS;

    return {
      name: 'Perl',
      aliases: [
        'pl',
        'pm'
      ],
      keywords: PERL_KEYWORDS,
      contains: PERL_DEFAULT_CONTAINS
    };
  }

  /*
  Language: PHP
  Author: Victor Karamzin <Victor.Karamzin@enterra-inc.com>
  Contributors: Evgeny Stepanischev <imbolk@gmail.com>, Ivan Sagalaev <maniac@softwaremaniacs.org>
  Website: https://www.php.net
  Category: common
  */

  /**
   * @param {HLJSApi} hljs
   * @returns {LanguageDetail}
   * */
  function php(hljs) {
    const regex = hljs.regex;
    // negative look-ahead tries to avoid matching patterns that are not
    // Perl at all like $ident$, @ident@, etc.
    const NOT_PERL_ETC = /(?![A-Za-z0-9])(?![$])/;
    const IDENT_RE = regex.concat(
      /[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/,
      NOT_PERL_ETC);
    // Will not detect camelCase classes
    const PASCAL_CASE_CLASS_NAME_RE = regex.concat(
      /(\\?[A-Z][a-z0-9_\x7f-\xff]+|\\?[A-Z]+(?=[A-Z][a-z0-9_\x7f-\xff])){1,}/,
      NOT_PERL_ETC);
    const VARIABLE = {
      scope: 'variable',
      match: '\\$+' + IDENT_RE,
    };
    const PREPROCESSOR = {
      scope: 'meta',
      variants: [
        { begin: /<\?php/, relevance: 10 }, // boost for obvious PHP
        { begin: /<\?=/ },
        // less relevant per PSR-1 which says not to use short-tags
        { begin: /<\?/, relevance: 0.1 },
        { begin: /\?>/ } // end php tag
      ]
    };
    const SUBST = {
      scope: 'subst',
      variants: [
        { begin: /\$\w+/ },
        {
          begin: /\{\$/,
          end: /\}/
        }
      ]
    };
    const SINGLE_QUOTED = hljs.inherit(hljs.APOS_STRING_MODE, { illegal: null, });
    const DOUBLE_QUOTED = hljs.inherit(hljs.QUOTE_STRING_MODE, {
      illegal: null,
      contains: hljs.QUOTE_STRING_MODE.contains.concat(SUBST),
    });

    const HEREDOC = {
      begin: /<<<[ \t]*(?:(\w+)|"(\w+)")\n/,
      end: /[ \t]*(\w+)\b/,
      contains: hljs.QUOTE_STRING_MODE.contains.concat(SUBST),
      'on:begin': (m, resp) => { resp.data._beginMatch = m[1] || m[2]; },
      'on:end': (m, resp) => { if (resp.data._beginMatch !== m[1]) resp.ignoreMatch(); },
    };

    const NOWDOC = hljs.END_SAME_AS_BEGIN({
      begin: /<<<[ \t]*'(\w+)'\n/,
      end: /[ \t]*(\w+)\b/,
    });
    // list of valid whitespaces because non-breaking space might be part of a IDENT_RE
    const WHITESPACE = '[ \t\n]';
    const STRING = {
      scope: 'string',
      variants: [
        DOUBLE_QUOTED,
        SINGLE_QUOTED,
        HEREDOC,
        NOWDOC
      ]
    };
    const NUMBER = {
      scope: 'number',
      variants: [
        { begin: `\\b0[bB][01]+(?:_[01]+)*\\b` }, // Binary w/ underscore support
        { begin: `\\b0[oO][0-7]+(?:_[0-7]+)*\\b` }, // Octals w/ underscore support
        { begin: `\\b0[xX][\\da-fA-F]+(?:_[\\da-fA-F]+)*\\b` }, // Hex w/ underscore support
        // Decimals w/ underscore support, with optional fragments and scientific exponent (e) suffix.
        { begin: `(?:\\b\\d+(?:_\\d+)*(\\.(?:\\d+(?:_\\d+)*))?|\\B\\.\\d+)(?:[eE][+-]?\\d+)?` }
      ],
      relevance: 0
    };
    const LITERALS = [
      "false",
      "null",
      "true"
    ];
    const KWS = [
      // Magic constants:
      // <https://www.php.net/manual/en/language.constants.predefined.php>
      "__CLASS__",
      "__DIR__",
      "__FILE__",
      "__FUNCTION__",
      "__COMPILER_HALT_OFFSET__",
      "__LINE__",
      "__METHOD__",
      "__NAMESPACE__",
      "__TRAIT__",
      // Function that look like language construct or language construct that look like function:
      // List of keywords that may not require parenthesis
      "die",
      "echo",
      "exit",
      "include",
      "include_once",
      "print",
      "require",
      "require_once",
      // These are not language construct (function) but operate on the currently-executing function and can access the current symbol table
      // 'compact extract func_get_arg func_get_args func_num_args get_called_class get_parent_class ' +
      // Other keywords:
      // <https://www.php.net/manual/en/reserved.php>
      // <https://www.php.net/manual/en/language.types.type-juggling.php>
      "array",
      "abstract",
      "and",
      "as",
      "binary",
      "bool",
      "boolean",
      "break",
      "callable",
      "case",
      "catch",
      "class",
      "clone",
      "const",
      "continue",
      "declare",
      "default",
      "do",
      "double",
      "else",
      "elseif",
      "empty",
      "enddeclare",
      "endfor",
      "endforeach",
      "endif",
      "endswitch",
      "endwhile",
      "enum",
      "eval",
      "extends",
      "final",
      "finally",
      "float",
      "for",
      "foreach",
      "from",
      "global",
      "goto",
      "if",
      "implements",
      "instanceof",
      "insteadof",
      "int",
      "integer",
      "interface",
      "isset",
      "iterable",
      "list",
      "match|0",
      "mixed",
      "new",
      "never",
      "object",
      "or",
      "private",
      "protected",
      "public",
      "readonly",
      "real",
      "return",
      "string",
      "switch",
      "throw",
      "trait",
      "try",
      "unset",
      "use",
      "var",
      "void",
      "while",
      "xor",
      "yield"
    ];

    const BUILT_INS = [
      // Standard PHP library:
      // <https://www.php.net/manual/en/book.spl.php>
      "Error|0",
      "AppendIterator",
      "ArgumentCountError",
      "ArithmeticError",
      "ArrayIterator",
      "ArrayObject",
      "AssertionError",
      "BadFunctionCallException",
      "BadMethodCallException",
      "CachingIterator",
      "CallbackFilterIterator",
      "CompileError",
      "Countable",
      "DirectoryIterator",
      "DivisionByZeroError",
      "DomainException",
      "EmptyIterator",
      "ErrorException",
      "Exception",
      "FilesystemIterator",
      "FilterIterator",
      "GlobIterator",
      "InfiniteIterator",
      "InvalidArgumentException",
      "IteratorIterator",
      "LengthException",
      "LimitIterator",
      "LogicException",
      "MultipleIterator",
      "NoRewindIterator",
      "OutOfBoundsException",
      "OutOfRangeException",
      "OuterIterator",
      "OverflowException",
      "ParentIterator",
      "ParseError",
      "RangeException",
      "RecursiveArrayIterator",
      "RecursiveCachingIterator",
      "RecursiveCallbackFilterIterator",
      "RecursiveDirectoryIterator",
      "RecursiveFilterIterator",
      "RecursiveIterator",
      "RecursiveIteratorIterator",
      "RecursiveRegexIterator",
      "RecursiveTreeIterator",
      "RegexIterator",
      "RuntimeException",
      "SeekableIterator",
      "SplDoublyLinkedList",
      "SplFileInfo",
      "SplFileObject",
      "SplFixedArray",
      "SplHeap",
      "SplMaxHeap",
      "SplMinHeap",
      "SplObjectStorage",
      "SplObserver",
      "SplPriorityQueue",
      "SplQueue",
      "SplStack",
      "SplSubject",
      "SplTempFileObject",
      "TypeError",
      "UnderflowException",
      "UnexpectedValueException",
      "UnhandledMatchError",
      // Reserved interfaces:
      // <https://www.php.net/manual/en/reserved.interfaces.php>
      "ArrayAccess",
      "BackedEnum",
      "Closure",
      "Fiber",
      "Generator",
      "Iterator",
      "IteratorAggregate",
      "Serializable",
      "Stringable",
      "Throwable",
      "Traversable",
      "UnitEnum",
      "WeakReference",
      "WeakMap",
      // Reserved classes:
      // <https://www.php.net/manual/en/reserved.classes.php>
      "Directory",
      "__PHP_Incomplete_Class",
      "parent",
      "php_user_filter",
      "self",
      "static",
      "stdClass"
    ];

    /** Dual-case keywords
     *
     * ["then","FILE"] =>
     *     ["then", "THEN", "FILE", "file"]
     *
     * @param {string[]} items */
    const dualCase = (items) => {
      /** @type string[] */
      const result = [];
      items.forEach(item => {
        result.push(item);
        if (item.toLowerCase() === item) {
          result.push(item.toUpperCase());
        } else {
          result.push(item.toLowerCase());
        }
      });
      return result;
    };

    const KEYWORDS = {
      keyword: KWS,
      literal: dualCase(LITERALS),
      built_in: BUILT_INS,
    };

    /**
     * @param {string[]} items */
    const normalizeKeywords = (items) => {
      return items.map(item => {
        return item.replace(/\|\d+$/, "");
      });
    };

    const CONSTRUCTOR_CALL = { variants: [
      {
        match: [
          /new/,
          regex.concat(WHITESPACE, "+"),
          // to prevent built ins from being confused as the class constructor call
          regex.concat("(?!", normalizeKeywords(BUILT_INS).join("\\b|"), "\\b)"),
          PASCAL_CASE_CLASS_NAME_RE,
        ],
        scope: {
          1: "keyword",
          4: "title.class",
        },
      }
    ] };

    const CONSTANT_REFERENCE = regex.concat(IDENT_RE, "\\b(?!\\()");

    const LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON = { variants: [
      {
        match: [
          regex.concat(
            /::/,
            regex.lookahead(/(?!class\b)/)
          ),
          CONSTANT_REFERENCE,
        ],
        scope: { 2: "variable.constant", },
      },
      {
        match: [
          /::/,
          /class/,
        ],
        scope: { 2: "variable.language", },
      },
      {
        match: [
          PASCAL_CASE_CLASS_NAME_RE,
          regex.concat(
            /::/,
            regex.lookahead(/(?!class\b)/)
          ),
          CONSTANT_REFERENCE,
        ],
        scope: {
          1: "title.class",
          3: "variable.constant",
        },
      },
      {
        match: [
          PASCAL_CASE_CLASS_NAME_RE,
          regex.concat(
            "::",
            regex.lookahead(/(?!class\b)/)
          ),
        ],
        scope: { 1: "title.class", },
      },
      {
        match: [
          PASCAL_CASE_CLASS_NAME_RE,
          /::/,
          /class/,
        ],
        scope: {
          1: "title.class",
          3: "variable.language",
        },
      }
    ] };

    const NAMED_ARGUMENT = {
      scope: 'attr',
      match: regex.concat(IDENT_RE, regex.lookahead(':'), regex.lookahead(/(?!::)/)),
    };
    const PARAMS_MODE = {
      relevance: 0,
      begin: /\(/,
      end: /\)/,
      keywords: KEYWORDS,
      contains: [
        NAMED_ARGUMENT,
        VARIABLE,
        LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON,
        hljs.C_BLOCK_COMMENT_MODE,
        STRING,
        NUMBER,
        CONSTRUCTOR_CALL,
      ],
    };
    const FUNCTION_INVOKE = {
      relevance: 0,
      match: [
        /\b/,
        // to prevent keywords from being confused as the function title
        regex.concat("(?!fn\\b|function\\b|", normalizeKeywords(KWS).join("\\b|"), "|", normalizeKeywords(BUILT_INS).join("\\b|"), "\\b)"),
        IDENT_RE,
        regex.concat(WHITESPACE, "*"),
        regex.lookahead(/(?=\()/)
      ],
      scope: { 3: "title.function.invoke", },
      contains: [ PARAMS_MODE ]
    };
    PARAMS_MODE.contains.push(FUNCTION_INVOKE);

    const ATTRIBUTE_CONTAINS = [
      NAMED_ARGUMENT,
      LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON,
      hljs.C_BLOCK_COMMENT_MODE,
      STRING,
      NUMBER,
      CONSTRUCTOR_CALL,
    ];

    const ATTRIBUTES = {
      begin: regex.concat(/#\[\s*/, PASCAL_CASE_CLASS_NAME_RE),
      beginScope: "meta",
      end: /]/,
      endScope: "meta",
      keywords: {
        literal: LITERALS,
        keyword: [
          'new',
          'array',
        ]
      },
      contains: [
        {
          begin: /\[/,
          end: /]/,
          keywords: {
            literal: LITERALS,
            keyword: [
              'new',
              'array',
            ]
          },
          contains: [
            'self',
            ...ATTRIBUTE_CONTAINS,
          ]
        },
        ...ATTRIBUTE_CONTAINS,
        {
          scope: 'meta',
          match: PASCAL_CASE_CLASS_NAME_RE
        }
      ]
    };

    return {
      case_insensitive: false,
      keywords: KEYWORDS,
      contains: [
        ATTRIBUTES,
        hljs.HASH_COMMENT_MODE,
        hljs.COMMENT('//', '$'),
        hljs.COMMENT(
          '/\\*',
          '\\*/',
          { contains: [
            {
              scope: 'doctag',
              match: '@[A-Za-z]+'
            }
          ] }
        ),
        {
          match: /__halt_compiler\(\);/,
          keywords: '__halt_compiler',
          starts: {
            scope: "comment",
            end: hljs.MATCH_NOTHING_RE,
            contains: [
              {
                match: /\?>/,
                scope: "meta",
                endsParent: true
              }
            ]
          }
        },
        PREPROCESSOR,
        {
          scope: 'variable.language',
          match: /\$this\b/
        },
        VARIABLE,
        FUNCTION_INVOKE,
        LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON,
        {
          match: [
            /const/,
            /\s/,
            IDENT_RE,
          ],
          scope: {
            1: "keyword",
            3: "variable.constant",
          },
        },
        CONSTRUCTOR_CALL,
        {
          scope: 'function',
          relevance: 0,
          beginKeywords: 'fn function',
          end: /[;{]/,
          excludeEnd: true,
          illegal: '[$%\\[]',
          contains: [
            { beginKeywords: 'use', },
            hljs.UNDERSCORE_TITLE_MODE,
            {
              begin: '=>', // No markup, just a relevance booster
              endsParent: true
            },
            {
              scope: 'params',
              begin: '\\(',
              end: '\\)',
              excludeBegin: true,
              excludeEnd: true,
              keywords: KEYWORDS,
              contains: [
                'self',
                VARIABLE,
                LEFT_AND_RIGHT_SIDE_OF_DOUBLE_COLON,
                hljs.C_BLOCK_COMMENT_MODE,
                STRING,
                NUMBER
              ]
            },
          ]
        },
        {
          scope: 'class',
          variants: [
            {
              beginKeywords: "enum",
              illegal: /[($"]/
            },
            {
              beginKeywords: "class interface trait",
              illegal: /[:($"]/
            }
          ],
          relevance: 0,
          end: /\{/,
          excludeEnd: true,
          contains: [
            { beginKeywords: 'extends implements' },
            hljs.UNDERSCORE_TITLE_MODE
          ]
        },
        // both use and namespace still use "old style" rules (vs multi-match)
        // because the namespace name can include `\` and we still want each
        // element to be treated as its own *individual* title
        {
          beginKeywords: 'namespace',
          relevance: 0,
          end: ';',
          illegal: /[.']/,
          contains: [ hljs.inherit(hljs.UNDERSCORE_TITLE_MODE, { scope: "title.class" }) ]
        },
        {
          beginKeywords: 'use',
          relevance: 0,
          end: ';',
          contains: [
            // TODO: title.function vs title.class
            {
              match: /\b(as|const|function)\b/,
              scope: "keyword"
            },
            // TODO: could be title.class or title.function
            hljs.UNDERSCORE_TITLE_MODE
          ]
        },
        STRING,
        NUMBER,
      ]
    };
  }

  /*
  Language: PHP Template
  Requires: xml.js, php.js
  Author: Josh Goebel <hello@joshgoebel.com>
  Website: https://www.php.net
  Category: common
  */

  function phpTemplate(hljs) {
    return {
      name: "PHP template",
      subLanguage: 'xml',
      contains: [
        {
          begin: /<\?(php|=)?/,
          end: /\?>/,
          subLanguage: 'php',
          contains: [
            // We don't want the php closing tag ?> to close the PHP block when
            // inside any of the following blocks:
            {
              begin: '/\\*',
              end: '\\*/',
              skip: true
            },
            {
              begin: 'b"',
              end: '"',
              skip: true
            },
            {
              begin: 'b\'',
              end: '\'',
              skip: true
            },
            hljs.inherit(hljs.APOS_STRING_MODE, {
              illegal: null,
              className: null,
              contains: null,
              skip: true
            }),
            hljs.inherit(hljs.QUOTE_STRING_MODE, {
              illegal: null,
              className: null,
              contains: null,
              skip: true
            })
          ]
        }
      ]
    };
  }

  /*
  Language: Plain text
  Author: Egor Rogov (e.rogov@postgrespro.ru)
  Description: Plain text without any highlighting.
  Category: common
  */

  function plaintext(hljs) {
    return {
      name: 'Plain text',
      aliases: [
        'text',
        'txt'
      ],
      disableAutodetect: true
    };
  }

  /*
  Language: Python
  Description: Python is an interpreted, object-oriented, high-level programming language with dynamic semantics.
  Website: https://www.python.org
  Category: common
  */

  function python(hljs) {
    const regex = hljs.regex;
    const IDENT_RE = /[\p{XID_Start}_]\p{XID_Continue}*/u;
    const RESERVED_WORDS = [
      'and',
      'as',
      'assert',
      'async',
      'await',
      'break',
      'case',
      'class',
      'continue',
      'def',
      'del',
      'elif',
      'else',
      'except',
      'finally',
      'for',
      'from',
      'global',
      'if',
      'import',
      'in',
      'is',
      'lambda',
      'match',
      'nonlocal|10',
      'not',
      'or',
      'pass',
      'raise',
      'return',
      'try',
      'while',
      'with',
      'yield'
    ];

    const BUILT_INS = [
      '__import__',
      'abs',
      'all',
      'any',
      'ascii',
      'bin',
      'bool',
      'breakpoint',
      'bytearray',
      'bytes',
      'callable',
      'chr',
      'classmethod',
      'compile',
      'complex',
      'delattr',
      'dict',
      'dir',
      'divmod',
      'enumerate',
      'eval',
      'exec',
      'filter',
      'float',
      'format',
      'frozenset',
      'getattr',
      'globals',
      'hasattr',
      'hash',
      'help',
      'hex',
      'id',
      'input',
      'int',
      'isinstance',
      'issubclass',
      'iter',
      'len',
      'list',
      'locals',
      'map',
      'max',
      'memoryview',
      'min',
      'next',
      'object',
      'oct',
      'open',
      'ord',
      'pow',
      'print',
      'property',
      'range',
      'repr',
      'reversed',
      'round',
      'set',
      'setattr',
      'slice',
      'sorted',
      'staticmethod',
      'str',
      'sum',
      'super',
      'tuple',
      'type',
      'vars',
      'zip'
    ];

    const LITERALS = [
      '__debug__',
      'Ellipsis',
      'False',
      'None',
      'NotImplemented',
      'True'
    ];

    // https://docs.python.org/3/library/typing.html
    // TODO: Could these be supplemented by a CamelCase matcher in certain
    // contexts, leaving these remaining only for relevance hinting?
    const TYPES = [
      "Any",
      "Callable",
      "Coroutine",
      "Dict",
      "List",
      "Literal",
      "Generic",
      "Optional",
      "Sequence",
      "Set",
      "Tuple",
      "Type",
      "Union"
    ];

    const KEYWORDS = {
      $pattern: /[A-Za-z]\w+|__\w+__/,
      keyword: RESERVED_WORDS,
      built_in: BUILT_INS,
      literal: LITERALS,
      type: TYPES
    };

    const PROMPT = {
      className: 'meta',
      begin: /^(>>>|\.\.\.) /
    };

    const SUBST = {
      className: 'subst',
      begin: /\{/,
      end: /\}/,
      keywords: KEYWORDS,
      illegal: /#/
    };

    const LITERAL_BRACKET = {
      begin: /\{\{/,
      relevance: 0
    };

    const STRING = {
      className: 'string',
      contains: [ hljs.BACKSLASH_ESCAPE ],
      variants: [
        {
          begin: /([uU]|[bB]|[rR]|[bB][rR]|[rR][bB])?'''/,
          end: /'''/,
          contains: [
            hljs.BACKSLASH_ESCAPE,
            PROMPT
          ],
          relevance: 10
        },
        {
          begin: /([uU]|[bB]|[rR]|[bB][rR]|[rR][bB])?"""/,
          end: /"""/,
          contains: [
            hljs.BACKSLASH_ESCAPE,
            PROMPT
          ],
          relevance: 10
        },
        {
          begin: /([fF][rR]|[rR][fF]|[fF])'''/,
          end: /'''/,
          contains: [
            hljs.BACKSLASH_ESCAPE,
            PROMPT,
            LITERAL_BRACKET,
            SUBST
          ]
        },
        {
          begin: /([fF][rR]|[rR][fF]|[fF])"""/,
          end: /"""/,
          contains: [
            hljs.BACKSLASH_ESCAPE,
            PROMPT,
            LITERAL_BRACKET,
            SUBST
          ]
        },
        {
          begin: /([uU]|[rR])'/,
          end: /'/,
          relevance: 10
        },
        {
          begin: /([uU]|[rR])"/,
          end: /"/,
          relevance: 10
        },
        {
          begin: /([bB]|[bB][rR]|[rR][bB])'/,
          end: /'/
        },
        {
          begin: /([bB]|[bB][rR]|[rR][bB])"/,
          end: /"/
        },
        {
          begin: /([fF][rR]|[rR][fF]|[fF])'/,
          end: /'/,
          contains: [
            hljs.BACKSLASH_ESCAPE,
            LITERAL_BRACKET,
            SUBST
          ]
        },
        {
          begin: /([fF][rR]|[rR][fF]|[fF])"/,
          end: /"/,
          contains: [
            hljs.BACKSLASH_ESCAPE,
            LITERAL_BRACKET,
            SUBST
          ]
        },
        hljs.APOS_STRING_MODE,
        hljs.QUOTE_STRING_MODE
      ]
    };

    // https://docs.python.org/3.9/reference/lexical_analysis.html#numeric-literals
    const digitpart = '[0-9](_?[0-9])*';
    const pointfloat = `(\\b(${digitpart}))?\\.(${digitpart})|\\b(${digitpart})\\.`;
    // Whitespace after a number (or any lexical token) is needed only if its absence
    // would change the tokenization
    // https://docs.python.org/3.9/reference/lexical_analysis.html#whitespace-between-tokens
    // We deviate slightly, requiring a word boundary or a keyword
    // to avoid accidentally recognizing *prefixes* (e.g., `0` in `0x41` or `08` or `0__1`)
    const lookahead = `\\b|${RESERVED_WORDS.join('|')}`;
    const NUMBER = {
      className: 'number',
      relevance: 0,
      variants: [
        // exponentfloat, pointfloat
        // https://docs.python.org/3.9/reference/lexical_analysis.html#floating-point-literals
        // optionally imaginary
        // https://docs.python.org/3.9/reference/lexical_analysis.html#imaginary-literals
        // Note: no leading \b because floats can start with a decimal point
        // and we don't want to mishandle e.g. `fn(.5)`,
        // no trailing \b for pointfloat because it can end with a decimal point
        // and we don't want to mishandle e.g. `0..hex()`; this should be safe
        // because both MUST contain a decimal point and so cannot be confused with
        // the interior part of an identifier
        {
          begin: `(\\b(${digitpart})|(${pointfloat}))[eE][+-]?(${digitpart})[jJ]?(?=${lookahead})`
        },
        {
          begin: `(${pointfloat})[jJ]?`
        },

        // decinteger, bininteger, octinteger, hexinteger
        // https://docs.python.org/3.9/reference/lexical_analysis.html#integer-literals
        // optionally "long" in Python 2
        // https://docs.python.org/2.7/reference/lexical_analysis.html#integer-and-long-integer-literals
        // decinteger is optionally imaginary
        // https://docs.python.org/3.9/reference/lexical_analysis.html#imaginary-literals
        {
          begin: `\\b([1-9](_?[0-9])*|0+(_?0)*)[lLjJ]?(?=${lookahead})`
        },
        {
          begin: `\\b0[bB](_?[01])+[lL]?(?=${lookahead})`
        },
        {
          begin: `\\b0[oO](_?[0-7])+[lL]?(?=${lookahead})`
        },
        {
          begin: `\\b0[xX](_?[0-9a-fA-F])+[lL]?(?=${lookahead})`
        },

        // imagnumber (digitpart-based)
        // https://docs.python.org/3.9/reference/lexical_analysis.html#imaginary-literals
        {
          begin: `\\b(${digitpart})[jJ](?=${lookahead})`
        }
      ]
    };
    const COMMENT_TYPE = {
      className: "comment",
      begin: regex.lookahead(/# type:/),
      end: /$/,
      keywords: KEYWORDS,
      contains: [
        { // prevent keywords from coloring `type`
          begin: /# type:/
        },
        // comment within a datatype comment includes no keywords
        {
          begin: /#/,
          end: /\b\B/,
          endsWithParent: true
        }
      ]
    };
    const PARAMS = {
      className: 'params',
      variants: [
        // Exclude params in functions without params
        {
          className: "",
          begin: /\(\s*\)/,
          skip: true
        },
        {
          begin: /\(/,
          end: /\)/,
          excludeBegin: true,
          excludeEnd: true,
          keywords: KEYWORDS,
          contains: [
            'self',
            PROMPT,
            NUMBER,
            STRING,
            hljs.HASH_COMMENT_MODE
          ]
        }
      ]
    };
    SUBST.contains = [
      STRING,
      NUMBER,
      PROMPT
    ];

    return {
      name: 'Python',
      aliases: [
        'py',
        'gyp',
        'ipython'
      ],
      unicodeRegex: true,
      keywords: KEYWORDS,
      illegal: /(<\/|\?)|=>/,
      contains: [
        PROMPT,
        NUMBER,
        {
          // very common convention
          scope: 'variable.language',
          match: /\bself\b/
        },
        {
          // eat "if" prior to string so that it won't accidentally be
          // labeled as an f-string
          beginKeywords: "if",
          relevance: 0
        },
        { match: /\bor\b/, scope: "keyword" },
        STRING,
        COMMENT_TYPE,
        hljs.HASH_COMMENT_MODE,
        {
          match: [
            /\bdef/, /\s+/,
            IDENT_RE,
          ],
          scope: {
            1: "keyword",
            3: "title.function"
          },
          contains: [ PARAMS ]
        },
        {
          variants: [
            {
              match: [
                /\bclass/, /\s+/,
                IDENT_RE, /\s*/,
                /\(\s*/, IDENT_RE,/\s*\)/
              ],
            },
            {
              match: [
                /\bclass/, /\s+/,
                IDENT_RE
              ],
            }
          ],
          scope: {
            1: "keyword",
            3: "title.class",
            6: "title.class.inherited",
          }
        },
        {
          className: 'meta',
          begin: /^[\t ]*@/,
          end: /(?=#)|$/,
          contains: [
            NUMBER,
            PARAMS,
            STRING
          ]
        }
      ]
    };
  }

  /*
  Language: Python REPL
  Requires: python.js
  Author: Josh Goebel <hello@joshgoebel.com>
  Category: common
  */

  function pythonRepl(hljs) {
    return {
      aliases: [ 'pycon' ],
      contains: [
        {
          className: 'meta.prompt',
          starts: {
            // a space separates the REPL prefix from the actual code
            // this is purely for cleaner HTML output
            end: / |$/,
            starts: {
              end: '$',
              subLanguage: 'python'
            }
          },
          variants: [
            { begin: /^>>>(?=[ ]|$)/ },
            { begin: /^\.\.\.(?=[ ]|$)/ }
          ]
        }
      ]
    };
  }

  /*
  Language: R
  Description: R is a free software environment for statistical computing and graphics.
  Author: Joe Cheng <joe@rstudio.org>
  Contributors: Konrad Rudolph <konrad.rudolph@gmail.com>
  Website: https://www.r-project.org
  Category: common,scientific
  */

  /** @type LanguageFn */
  function r(hljs) {
    const regex = hljs.regex;
    // Identifiers in R cannot start with `_`, but they can start with `.` if it
    // is not immediately followed by a digit.
    // R also supports quoted identifiers, which are near-arbitrary sequences
    // delimited by backticks (`…`), which may contain escape sequences. These are
    // handled in a separate mode. See `test/markup/r/names.txt` for examples.
    // FIXME: Support Unicode identifiers.
    const IDENT_RE = /(?:(?:[a-zA-Z]|\.[._a-zA-Z])[._a-zA-Z0-9]*)|\.(?!\d)/;
    const NUMBER_TYPES_RE = regex.either(
      // Special case: only hexadecimal binary powers can contain fractions
      /0[xX][0-9a-fA-F]+\.[0-9a-fA-F]*[pP][+-]?\d+i?/,
      // Hexadecimal numbers without fraction and optional binary power
      /0[xX][0-9a-fA-F]+(?:[pP][+-]?\d+)?[Li]?/,
      // Decimal numbers
      /(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][+-]?\d+)?[Li]?/
    );
    const OPERATORS_RE = /[=!<>:]=|\|\||&&|:::?|<-|<<-|->>|->|\|>|[-+*\/?!$&|:<=>@^~]|\*\*/;
    const PUNCTUATION_RE = regex.either(
      /[()]/,
      /[{}]/,
      /\[\[/,
      /[[\]]/,
      /\\/,
      /,/
    );

    return {
      name: 'R',

      keywords: {
        $pattern: IDENT_RE,
        keyword:
          'function if in break next repeat else for while',
        literal:
          'NULL NA TRUE FALSE Inf NaN NA_integer_|10 NA_real_|10 '
          + 'NA_character_|10 NA_complex_|10',
        built_in:
          // Builtin constants
          'LETTERS letters month.abb month.name pi T F '
          // Primitive functions
          // These are all the functions in `base` that are implemented as a
          // `.Primitive`, minus those functions that are also keywords.
          + 'abs acos acosh all any anyNA Arg as.call as.character '
          + 'as.complex as.double as.environment as.integer as.logical '
          + 'as.null.default as.numeric as.raw asin asinh atan atanh attr '
          + 'attributes baseenv browser c call ceiling class Conj cos cosh '
          + 'cospi cummax cummin cumprod cumsum digamma dim dimnames '
          + 'emptyenv exp expression floor forceAndCall gamma gc.time '
          + 'globalenv Im interactive invisible is.array is.atomic is.call '
          + 'is.character is.complex is.double is.environment is.expression '
          + 'is.finite is.function is.infinite is.integer is.language '
          + 'is.list is.logical is.matrix is.na is.name is.nan is.null '
          + 'is.numeric is.object is.pairlist is.raw is.recursive is.single '
          + 'is.symbol lazyLoadDBfetch length lgamma list log max min '
          + 'missing Mod names nargs nzchar oldClass on.exit pos.to.env '
          + 'proc.time prod quote range Re rep retracemem return round '
          + 'seq_along seq_len seq.int sign signif sin sinh sinpi sqrt '
          + 'standardGeneric substitute sum switch tan tanh tanpi tracemem '
          + 'trigamma trunc unclass untracemem UseMethod xtfrm',
      },

      contains: [
        // Roxygen comments
        hljs.COMMENT(
          /#'/,
          /$/,
          { contains: [
            {
              // Handle `@examples` separately to cause all subsequent code
              // until the next `@`-tag on its own line to be kept as-is,
              // preventing highlighting. This code is example R code, so nested
              // doctags shouldn’t be treated as such. See
              // `test/markup/r/roxygen.txt` for an example.
              scope: 'doctag',
              match: /@examples/,
              starts: {
                end: regex.lookahead(regex.either(
                  // end if another doc comment
                  /\n^#'\s*(?=@[a-zA-Z]+)/,
                  // or a line with no comment
                  /\n^(?!#')/
                )),
                endsParent: true
              }
            },
            {
              // Handle `@param` to highlight the parameter name following
              // after.
              scope: 'doctag',
              begin: '@param',
              end: /$/,
              contains: [
                {
                  scope: 'variable',
                  variants: [
                    { match: IDENT_RE },
                    { match: /`(?:\\.|[^`\\])+`/ }
                  ],
                  endsParent: true
                }
              ]
            },
            {
              scope: 'doctag',
              match: /@[a-zA-Z]+/
            },
            {
              scope: 'keyword',
              match: /\\[a-zA-Z]+/
            }
          ] }
        ),

        hljs.HASH_COMMENT_MODE,

        {
          scope: 'string',
          contains: [ hljs.BACKSLASH_ESCAPE ],
          variants: [
            hljs.END_SAME_AS_BEGIN({
              begin: /[rR]"(-*)\(/,
              end: /\)(-*)"/
            }),
            hljs.END_SAME_AS_BEGIN({
              begin: /[rR]"(-*)\{/,
              end: /\}(-*)"/
            }),
            hljs.END_SAME_AS_BEGIN({
              begin: /[rR]"(-*)\[/,
              end: /\](-*)"/
            }),
            hljs.END_SAME_AS_BEGIN({
              begin: /[rR]'(-*)\(/,
              end: /\)(-*)'/
            }),
            hljs.END_SAME_AS_BEGIN({
              begin: /[rR]'(-*)\{/,
              end: /\}(-*)'/
            }),
            hljs.END_SAME_AS_BEGIN({
              begin: /[rR]'(-*)\[/,
              end: /\](-*)'/
            }),
            {
              begin: '"',
              end: '"',
              relevance: 0
            },
            {
              begin: "'",
              end: "'",
              relevance: 0
            }
          ],
        },

        // Matching numbers immediately following punctuation and operators is
        // tricky since we need to look at the character ahead of a number to
        // ensure the number is not part of an identifier, and we cannot use
        // negative look-behind assertions. So instead we explicitly handle all
        // possible combinations of (operator|punctuation), number.
        // TODO: replace with negative look-behind when available
        // { begin: /(?<![a-zA-Z0-9._])0[xX][0-9a-fA-F]+\.[0-9a-fA-F]*[pP][+-]?\d+i?/ },
        // { begin: /(?<![a-zA-Z0-9._])0[xX][0-9a-fA-F]+([pP][+-]?\d+)?[Li]?/ },
        // { begin: /(?<![a-zA-Z0-9._])(\d+(\.\d*)?|\.\d+)([eE][+-]?\d+)?[Li]?/ }
        {
          relevance: 0,
          variants: [
            {
              scope: {
                1: 'operator',
                2: 'number'
              },
              match: [
                OPERATORS_RE,
                NUMBER_TYPES_RE
              ]
            },
            {
              scope: {
                1: 'operator',
                2: 'number'
              },
              match: [
                /%[^%]*%/,
                NUMBER_TYPES_RE
              ]
            },
            {
              scope: {
                1: 'punctuation',
                2: 'number'
              },
              match: [
                PUNCTUATION_RE,
                NUMBER_TYPES_RE
              ]
            },
            {
              scope: { 2: 'number' },
              match: [
                /[^a-zA-Z0-9._]|^/, // not part of an identifier, or start of document
                NUMBER_TYPES_RE
              ]
            }
          ]
        },

        // Operators/punctuation when they're not directly followed by numbers
        {
          // Relevance boost for the most common assignment form.
          scope: { 3: 'operator' },
          match: [
            IDENT_RE,
            /\s+/,
            /<-/,
            /\s+/
          ]
        },

        {
          scope: 'operator',
          relevance: 0,
          variants: [
            { match: OPERATORS_RE },
            { match: /%[^%]*%/ }
          ]
        },

        {
          scope: 'punctuation',
          relevance: 0,
          match: PUNCTUATION_RE
        },

        {
          // Escaped identifier
          begin: '`',
          end: '`',
          contains: [ { begin: /\\./ } ]
        }
      ]
    };
  }

  /*
  Language: Ruby
  Description: Ruby is a dynamic, open source programming language with a focus on simplicity and productivity.
  Website: https://www.ruby-lang.org/
  Author: Anton Kovalyov <anton@kovalyov.net>
  Contributors: Peter Leonov <gojpeg@yandex.ru>, Vasily Polovnyov <vast@whiteants.net>, Loren Segal <lsegal@soen.ca>, Pascal Hurni <phi@ruby-reactive.org>, Cedric Sohrauer <sohrauer@googlemail.com>
  Category: common, scripting
  */

  function ruby(hljs) {
    const regex = hljs.regex;
    const RUBY_METHOD_RE = '([a-zA-Z_]\\w*[!?=]?|[-+~]@|<<|>>|=~|===?|<=>|[<>]=?|\\*\\*|[-/+%^&*~`|]|\\[\\]=?)';
    // TODO: move concepts like CAMEL_CASE into `modes.js`
    const CLASS_NAME_RE = regex.either(
      /\b([A-Z]+[a-z0-9]+)+/,
      // ends in caps
      /\b([A-Z]+[a-z0-9]+)+[A-Z]+/,
    )
    ;
    const CLASS_NAME_WITH_NAMESPACE_RE = regex.concat(CLASS_NAME_RE, /(::\w+)*/);
    // very popular ruby built-ins that one might even assume
    // are actual keywords (despite that not being the case)
    const PSEUDO_KWS = [
      "include",
      "extend",
      "prepend",
      "public",
      "private",
      "protected",
      "raise",
      "throw"
    ];
    const RUBY_KEYWORDS = {
      "variable.constant": [
        "__FILE__",
        "__LINE__",
        "__ENCODING__"
      ],
      "variable.language": [
        "self",
        "super",
      ],
      keyword: [
        "alias",
        "and",
        "begin",
        "BEGIN",
        "break",
        "case",
        "class",
        "defined",
        "do",
        "else",
        "elsif",
        "end",
        "END",
        "ensure",
        "for",
        "if",
        "in",
        "module",
        "next",
        "not",
        "or",
        "redo",
        "require",
        "rescue",
        "retry",
        "return",
        "then",
        "undef",
        "unless",
        "until",
        "when",
        "while",
        "yield",
        ...PSEUDO_KWS
      ],
      built_in: [
        "proc",
        "lambda",
        "attr_accessor",
        "attr_reader",
        "attr_writer",
        "define_method",
        "private_constant",
        "module_function"
      ],
      literal: [
        "true",
        "false",
        "nil"
      ]
    };
    const YARDOCTAG = {
      className: 'doctag',
      begin: '@[A-Za-z]+'
    };
    const IRB_OBJECT = {
      begin: '#<',
      end: '>'
    };
    const COMMENT_MODES = [
      hljs.COMMENT(
        '#',
        '$',
        { contains: [ YARDOCTAG ] }
      ),
      hljs.COMMENT(
        '^=begin',
        '^=end',
        {
          contains: [ YARDOCTAG ],
          relevance: 10
        }
      ),
      hljs.COMMENT('^__END__', hljs.MATCH_NOTHING_RE)
    ];
    const SUBST = {
      className: 'subst',
      begin: /#\{/,
      end: /\}/,
      keywords: RUBY_KEYWORDS
    };
    const STRING = {
      className: 'string',
      contains: [
        hljs.BACKSLASH_ESCAPE,
        SUBST
      ],
      variants: [
        {
          begin: /'/,
          end: /'/
        },
        {
          begin: /"/,
          end: /"/
        },
        {
          begin: /`/,
          end: /`/
        },
        {
          begin: /%[qQwWx]?\(/,
          end: /\)/
        },
        {
          begin: /%[qQwWx]?\[/,
          end: /\]/
        },
        {
          begin: /%[qQwWx]?\{/,
          end: /\}/
        },
        {
          begin: /%[qQwWx]?</,
          end: />/
        },
        {
          begin: /%[qQwWx]?\//,
          end: /\//
        },
        {
          begin: /%[qQwWx]?%/,
          end: /%/
        },
        {
          begin: /%[qQwWx]?-/,
          end: /-/
        },
        {
          begin: /%[qQwWx]?\|/,
          end: /\|/
        },
        // in the following expressions, \B in the beginning suppresses recognition of ?-sequences
        // where ? is the last character of a preceding identifier, as in: `func?4`
        { begin: /\B\?(\\\d{1,3})/ },
        { begin: /\B\?(\\x[A-Fa-f0-9]{1,2})/ },
        { begin: /\B\?(\\u\{?[A-Fa-f0-9]{1,6}\}?)/ },
        { begin: /\B\?(\\M-\\C-|\\M-\\c|\\c\\M-|\\M-|\\C-\\M-)[\x20-\x7e]/ },
        { begin: /\B\?\\(c|C-)[\x20-\x7e]/ },
        { begin: /\B\?\\?\S/ },
        // heredocs
        {
          // this guard makes sure that we have an entire heredoc and not a false
          // positive (auto-detect, etc.)
          begin: regex.concat(
            /<<[-~]?'?/,
            regex.lookahead(/(\w+)(?=\W)[^\n]*\n(?:[^\n]*\n)*?\s*\1\b/)
          ),
          contains: [
            hljs.END_SAME_AS_BEGIN({
              begin: /(\w+)/,
              end: /(\w+)/,
              contains: [
                hljs.BACKSLASH_ESCAPE,
                SUBST
              ]
            })
          ]
        }
      ]
    };

    // Ruby syntax is underdocumented, but this grammar seems to be accurate
    // as of version 2.7.2 (confirmed with (irb and `Ripper.sexp(...)`)
    // https://docs.ruby-lang.org/en/2.7.0/doc/syntax/literals_rdoc.html#label-Numbers
    const decimal = '[1-9](_?[0-9])*|0';
    const digits = '[0-9](_?[0-9])*';
    const NUMBER = {
      className: 'number',
      relevance: 0,
      variants: [
        // decimal integer/float, optionally exponential or rational, optionally imaginary
        { begin: `\\b(${decimal})(\\.(${digits}))?([eE][+-]?(${digits})|r)?i?\\b` },

        // explicit decimal/binary/octal/hexadecimal integer,
        // optionally rational and/or imaginary
        { begin: "\\b0[dD][0-9](_?[0-9])*r?i?\\b" },
        { begin: "\\b0[bB][0-1](_?[0-1])*r?i?\\b" },
        { begin: "\\b0[oO][0-7](_?[0-7])*r?i?\\b" },
        { begin: "\\b0[xX][0-9a-fA-F](_?[0-9a-fA-F])*r?i?\\b" },

        // 0-prefixed implicit octal integer, optionally rational and/or imaginary
        { begin: "\\b0(_?[0-7])+r?i?\\b" }
      ]
    };

    const PARAMS = {
      variants: [
        {
          match: /\(\)/,
        },
        {
          className: 'params',
          begin: /\(/,
          end: /(?=\))/,
          excludeBegin: true,
          endsParent: true,
          keywords: RUBY_KEYWORDS,
        }
      ]
    };

    const INCLUDE_EXTEND = {
      match: [
        /(include|extend)\s+/,
        CLASS_NAME_WITH_NAMESPACE_RE
      ],
      scope: {
        2: "title.class"
      },
      keywords: RUBY_KEYWORDS
    };

    const CLASS_DEFINITION = {
      variants: [
        {
          match: [
            /class\s+/,
            CLASS_NAME_WITH_NAMESPACE_RE,
            /\s+<\s+/,
            CLASS_NAME_WITH_NAMESPACE_RE
          ]
        },
        {
          match: [
            /\b(class|module)\s+/,
            CLASS_NAME_WITH_NAMESPACE_RE
          ]
        }
      ],
      scope: {
        2: "title.class",
        4: "title.class.inherited"
      },
      keywords: RUBY_KEYWORDS
    };

    const UPPER_CASE_CONSTANT = {
      relevance: 0,
      match: /\b[A-Z][A-Z_0-9]+\b/,
      className: "variable.constant"
    };

    const METHOD_DEFINITION = {
      match: [
        /def/, /\s+/,
        RUBY_METHOD_RE
      ],
      scope: {
        1: "keyword",
        3: "title.function"
      },
      contains: [
        PARAMS
      ]
    };

    const OBJECT_CREATION = {
      relevance: 0,
      match: [
        CLASS_NAME_WITH_NAMESPACE_RE,
        /\.new[. (]/
      ],
      scope: {
        1: "title.class"
      }
    };

    // CamelCase
    const CLASS_REFERENCE = {
      relevance: 0,
      match: CLASS_NAME_RE,
      scope: "title.class"
    };

    const RUBY_DEFAULT_CONTAINS = [
      STRING,
      CLASS_DEFINITION,
      INCLUDE_EXTEND,
      OBJECT_CREATION,
      UPPER_CASE_CONSTANT,
      CLASS_REFERENCE,
      METHOD_DEFINITION,
      {
        // swallow namespace qualifiers before symbols
        begin: hljs.IDENT_RE + '::' },
      {
        className: 'symbol',
        begin: hljs.UNDERSCORE_IDENT_RE + '(!|\\?)?:',
        relevance: 0
      },
      {
        className: 'symbol',
        begin: ':(?!\\s)',
        contains: [
          STRING,
          { begin: RUBY_METHOD_RE }
        ],
        relevance: 0
      },
      NUMBER,
      {
        // negative-look forward attempts to prevent false matches like:
        // @ident@ or $ident$ that might indicate this is not ruby at all
        className: "variable",
        begin: '(\\$\\W)|((\\$|@@?)(\\w+))(?=[^@$?])' + `(?![A-Za-z])(?![@$?'])`
      },
      {
        className: 'params',
        begin: /\|/,
        end: /\|/,
        excludeBegin: true,
        excludeEnd: true,
        relevance: 0, // this could be a lot of things (in other languages) other than params
        keywords: RUBY_KEYWORDS
      },
      { // regexp container
        begin: '(' + hljs.RE_STARTERS_RE + '|unless)\\s*',
        keywords: 'unless',
        contains: [
          {
            className: 'regexp',
            contains: [
              hljs.BACKSLASH_ESCAPE,
              SUBST
            ],
            illegal: /\n/,
            variants: [
              {
                begin: '/',
                end: '/[a-z]*'
              },
              {
                begin: /%r\{/,
                end: /\}[a-z]*/
              },
              {
                begin: '%r\\(',
                end: '\\)[a-z]*'
              },
              {
                begin: '%r!',
                end: '![a-z]*'
              },
              {
                begin: '%r\\[',
                end: '\\][a-z]*'
              }
            ]
          }
        ].concat(IRB_OBJECT, COMMENT_MODES),
        relevance: 0
      }
    ].concat(IRB_OBJECT, COMMENT_MODES);

    SUBST.contains = RUBY_DEFAULT_CONTAINS;
    PARAMS.contains = RUBY_DEFAULT_CONTAINS;

    // >>
    // ?>
    const SIMPLE_PROMPT = "[>?]>";
    // irb(main):001:0>
    const DEFAULT_PROMPT = "[\\w#]+\\(\\w+\\):\\d+:\\d+[>*]";
    const RVM_PROMPT = "(\\w+-)?\\d+\\.\\d+\\.\\d+(p\\d+)?[^\\d][^>]+>";

    const IRB_DEFAULT = [
      {
        begin: /^\s*=>/,
        starts: {
          end: '$',
          contains: RUBY_DEFAULT_CONTAINS
        }
      },
      {
        className: 'meta.prompt',
        begin: '^(' + SIMPLE_PROMPT + "|" + DEFAULT_PROMPT + '|' + RVM_PROMPT + ')(?=[ ])',
        starts: {
          end: '$',
          keywords: RUBY_KEYWORDS,
          contains: RUBY_DEFAULT_CONTAINS
        }
      }
    ];

    COMMENT_MODES.unshift(IRB_OBJECT);

    return {
      name: 'Ruby',
      aliases: [
        'rb',
        'gemspec',
        'podspec',
        'thor',
        'irb'
      ],
      keywords: RUBY_KEYWORDS,
      illegal: /\/\*/,
      contains: [ hljs.SHEBANG({ binary: "ruby" }) ]
        .concat(IRB_DEFAULT)
        .concat(COMMENT_MODES)
        .concat(RUBY_DEFAULT_CONTAINS)
    };
  }

  /*
  Language: Rust
  Author: Andrey Vlasovskikh <andrey.vlasovskikh@gmail.com>
  Contributors: Roman Shmatov <romanshmatov@gmail.com>, Kasper Andersen <kma_untrusted@protonmail.com>
  Website: https://www.rust-lang.org
  Category: common, system
  */

  /** @type LanguageFn */

  function rust(hljs) {
    const regex = hljs.regex;
    // ============================================
    // Added to support the r# keyword, which is a raw identifier in Rust.
    const RAW_IDENTIFIER = /(r#)?/;
    const UNDERSCORE_IDENT_RE = regex.concat(RAW_IDENTIFIER, hljs.UNDERSCORE_IDENT_RE);
    const IDENT_RE = regex.concat(RAW_IDENTIFIER, hljs.IDENT_RE);
    // ============================================
    const FUNCTION_INVOKE = {
      className: "title.function.invoke",
      relevance: 0,
      begin: regex.concat(
        /\b/,
        /(?!let|for|while|if|else|match\b)/,
        IDENT_RE,
        regex.lookahead(/\s*\(/))
    };
    const NUMBER_SUFFIX = '([ui](8|16|32|64|128|size)|f(32|64))\?';
    const KEYWORDS = [
      "abstract",
      "as",
      "async",
      "await",
      "become",
      "box",
      "break",
      "const",
      "continue",
      "crate",
      "do",
      "dyn",
      "else",
      "enum",
      "extern",
      "false",
      "final",
      "fn",
      "for",
      "if",
      "impl",
      "in",
      "let",
      "loop",
      "macro",
      "match",
      "mod",
      "move",
      "mut",
      "override",
      "priv",
      "pub",
      "ref",
      "return",
      "self",
      "Self",
      "static",
      "struct",
      "super",
      "trait",
      "true",
      "try",
      "type",
      "typeof",
      "union",
      "unsafe",
      "unsized",
      "use",
      "virtual",
      "where",
      "while",
      "yield"
    ];
    const LITERALS = [
      "true",
      "false",
      "Some",
      "None",
      "Ok",
      "Err"
    ];
    const BUILTINS = [
      // functions
      'drop ',
      // traits
      "Copy",
      "Send",
      "Sized",
      "Sync",
      "Drop",
      "Fn",
      "FnMut",
      "FnOnce",
      "ToOwned",
      "Clone",
      "Debug",
      "PartialEq",
      "PartialOrd",
      "Eq",
      "Ord",
      "AsRef",
      "AsMut",
      "Into",
      "From",
      "Default",
      "Iterator",
      "Extend",
      "IntoIterator",
      "DoubleEndedIterator",
      "ExactSizeIterator",
      "SliceConcatExt",
      "ToString",
      // macros
      "assert!",
      "assert_eq!",
      "bitflags!",
      "bytes!",
      "cfg!",
      "col!",
      "concat!",
      "concat_idents!",
      "debug_assert!",
      "debug_assert_eq!",
      "env!",
      "eprintln!",
      "panic!",
      "file!",
      "format!",
      "format_args!",
      "include_bytes!",
      "include_str!",
      "line!",
      "local_data_key!",
      "module_path!",
      "option_env!",
      "print!",
      "println!",
      "select!",
      "stringify!",
      "try!",
      "unimplemented!",
      "unreachable!",
      "vec!",
      "write!",
      "writeln!",
      "macro_rules!",
      "assert_ne!",
      "debug_assert_ne!"
    ];
    const TYPES = [
      "i8",
      "i16",
      "i32",
      "i64",
      "i128",
      "isize",
      "u8",
      "u16",
      "u32",
      "u64",
      "u128",
      "usize",
      "f32",
      "f64",
      "str",
      "char",
      "bool",
      "Box",
      "Option",
      "Result",
      "String",
      "Vec"
    ];
    return {
      name: 'Rust',
      aliases: [ 'rs' ],
      keywords: {
        $pattern: hljs.IDENT_RE + '!?',
        type: TYPES,
        keyword: KEYWORDS,
        literal: LITERALS,
        built_in: BUILTINS
      },
      illegal: '</',
      contains: [
        hljs.C_LINE_COMMENT_MODE,
        hljs.COMMENT('/\\*', '\\*/', { contains: [ 'self' ] }),
        hljs.inherit(hljs.QUOTE_STRING_MODE, {
          begin: /b?"/,
          illegal: null
        }),
        {
          className: 'string',
          variants: [
            { begin: /b?r(#*)"(.|\n)*?"\1(?!#)/ },
            { begin: /b?'\\?(x\w{2}|u\w{4}|U\w{8}|.)'/ }
          ]
        },
        {
          className: 'symbol',
          begin: /'[a-zA-Z_][a-zA-Z0-9_]*/
        },
        {
          className: 'number',
          variants: [
            { begin: '\\b0b([01_]+)' + NUMBER_SUFFIX },
            { begin: '\\b0o([0-7_]+)' + NUMBER_SUFFIX },
            { begin: '\\b0x([A-Fa-f0-9_]+)' + NUMBER_SUFFIX },
            { begin: '\\b(\\d[\\d_]*(\\.[0-9_]+)?([eE][+-]?[0-9_]+)?)'
                     + NUMBER_SUFFIX }
          ],
          relevance: 0
        },
        {
          begin: [
            /fn/,
            /\s+/,
            UNDERSCORE_IDENT_RE
          ],
          className: {
            1: "keyword",
            3: "title.function"
          }
        },
        {
          className: 'meta',
          begin: '#!?\\[',
          end: '\\]',
          contains: [
            {
              className: 'string',
              begin: /"/,
              end: /"/,
              contains: [
                hljs.BACKSLASH_ESCAPE
              ]
            }
          ]
        },
        {
          begin: [
            /let/,
            /\s+/,
            /(?:mut\s+)?/,
            UNDERSCORE_IDENT_RE
          ],
          className: {
            1: "keyword",
            3: "keyword",
            4: "variable"
          }
        },
        // must come before impl/for rule later
        {
          begin: [
            /for/,
            /\s+/,
            UNDERSCORE_IDENT_RE,
            /\s+/,
            /in/
          ],
          className: {
            1: "keyword",
            3: "variable",
            5: "keyword"
          }
        },
        {
          begin: [
            /type/,
            /\s+/,
            UNDERSCORE_IDENT_RE
          ],
          className: {
            1: "keyword",
            3: "title.class"
          }
        },
        {
          begin: [
            /(?:trait|enum|struct|union|impl|for)/,
            /\s+/,
            UNDERSCORE_IDENT_RE
          ],
          className: {
            1: "keyword",
            3: "title.class"
          }
        },
        {
          begin: hljs.IDENT_RE + '::',
          keywords: {
            keyword: "Self",
            built_in: BUILTINS,
            type: TYPES
          }
        },
        {
          className: "punctuation",
          begin: '->'
        },
        FUNCTION_INVOKE
      ]
    };
  }

  /*
  Language: SCSS
  Description: Scss is an extension of the syntax of CSS.
  Author: Kurt Emch <kurt@kurtemch.com>
  Website: https://sass-lang.com
  Category: common, css, web
  */


  /** @type LanguageFn */
  function scss(hljs) {
    const modes = MODES(hljs);
    const PSEUDO_ELEMENTS$1 = PSEUDO_ELEMENTS;
    const PSEUDO_CLASSES$1 = PSEUDO_CLASSES;

    const AT_IDENTIFIER = '@[a-z-]+'; // @font-face
    const AT_MODIFIERS = "and or not only";
    const IDENT_RE = '[a-zA-Z-][a-zA-Z0-9_-]*';
    const VARIABLE = {
      className: 'variable',
      begin: '(\\$' + IDENT_RE + ')\\b',
      relevance: 0
    };

    return {
      name: 'SCSS',
      case_insensitive: true,
      illegal: '[=/|\']',
      contains: [
        hljs.C_LINE_COMMENT_MODE,
        hljs.C_BLOCK_COMMENT_MODE,
        // to recognize keyframe 40% etc which are outside the scope of our
        // attribute value mode
        modes.CSS_NUMBER_MODE,
        {
          className: 'selector-id',
          begin: '#[A-Za-z0-9_-]+',
          relevance: 0
        },
        {
          className: 'selector-class',
          begin: '\\.[A-Za-z0-9_-]+',
          relevance: 0
        },
        modes.ATTRIBUTE_SELECTOR_MODE,
        {
          className: 'selector-tag',
          begin: '\\b(' + TAGS.join('|') + ')\\b',
          // was there, before, but why?
          relevance: 0
        },
        {
          className: 'selector-pseudo',
          begin: ':(' + PSEUDO_CLASSES$1.join('|') + ')'
        },
        {
          className: 'selector-pseudo',
          begin: ':(:)?(' + PSEUDO_ELEMENTS$1.join('|') + ')'
        },
        VARIABLE,
        { // pseudo-selector params
          begin: /\(/,
          end: /\)/,
          contains: [ modes.CSS_NUMBER_MODE ]
        },
        modes.CSS_VARIABLE,
        {
          className: 'attribute',
          begin: '\\b(' + ATTRIBUTES.join('|') + ')\\b'
        },
        { begin: '\\b(whitespace|wait|w-resize|visible|vertical-text|vertical-ideographic|uppercase|upper-roman|upper-alpha|underline|transparent|top|thin|thick|text|text-top|text-bottom|tb-rl|table-header-group|table-footer-group|sw-resize|super|strict|static|square|solid|small-caps|separate|se-resize|scroll|s-resize|rtl|row-resize|ridge|right|repeat|repeat-y|repeat-x|relative|progress|pointer|overline|outside|outset|oblique|nowrap|not-allowed|normal|none|nw-resize|no-repeat|no-drop|newspaper|ne-resize|n-resize|move|middle|medium|ltr|lr-tb|lowercase|lower-roman|lower-alpha|loose|list-item|line|line-through|line-edge|lighter|left|keep-all|justify|italic|inter-word|inter-ideograph|inside|inset|inline|inline-block|inherit|inactive|ideograph-space|ideograph-parenthesis|ideograph-numeric|ideograph-alpha|horizontal|hidden|help|hand|groove|fixed|ellipsis|e-resize|double|dotted|distribute|distribute-space|distribute-letter|distribute-all-lines|disc|disabled|default|decimal|dashed|crosshair|collapse|col-resize|circle|char|center|capitalize|break-word|break-all|bottom|both|bolder|bold|block|bidi-override|below|baseline|auto|always|all-scroll|absolute|table|table-cell)\\b' },
        {
          begin: /:/,
          end: /[;}{]/,
          relevance: 0,
          contains: [
            modes.BLOCK_COMMENT,
            VARIABLE,
            modes.HEXCOLOR,
            modes.CSS_NUMBER_MODE,
            hljs.QUOTE_STRING_MODE,
            hljs.APOS_STRING_MODE,
            modes.IMPORTANT,
            modes.FUNCTION_DISPATCH
          ]
        },
        // matching these here allows us to treat them more like regular CSS
        // rules so everything between the {} gets regular rule highlighting,
        // which is what we want for page and font-face
        {
          begin: '@(page|font-face)',
          keywords: {
            $pattern: AT_IDENTIFIER,
            keyword: '@page @font-face'
          }
        },
        {
          begin: '@',
          end: '[{;]',
          returnBegin: true,
          keywords: {
            $pattern: /[a-z-]+/,
            keyword: AT_MODIFIERS,
            attribute: MEDIA_FEATURES.join(" ")
          },
          contains: [
            {
              begin: AT_IDENTIFIER,
              className: "keyword"
            },
            {
              begin: /[a-z-]+(?=:)/,
              className: "attribute"
            },
            VARIABLE,
            hljs.QUOTE_STRING_MODE,
            hljs.APOS_STRING_MODE,
            modes.HEXCOLOR,
            modes.CSS_NUMBER_MODE
          ]
        },
        modes.FUNCTION_DISPATCH
      ]
    };
  }

  /*
  Language: Shell Session
  Requires: bash.js
  Author: TSUYUSATO Kitsune <make.just.on@gmail.com>
  Category: common
  Audit: 2020
  */

  /** @type LanguageFn */
  function shell(hljs) {
    return {
      name: 'Shell Session',
      aliases: [
        'console',
        'shellsession'
      ],
      contains: [
        {
          className: 'meta.prompt',
          // We cannot add \s (spaces) in the regular expression otherwise it will be too broad and produce unexpected result.
          // For instance, in the following example, it would match "echo /path/to/home >" as a prompt:
          // echo /path/to/home > t.exe
          begin: /^\s{0,3}[/~\w\d[\]()@-]*[>%$#][ ]?/,
          starts: {
            end: /[^\\](?=\s*$)/,
            subLanguage: 'bash'
          }
        }
      ]
    };
  }

  /*
   Language: SQL
   Website: https://en.wikipedia.org/wiki/SQL
   Category: common, database
   */

  /*

  Goals:

  SQL is intended to highlight basic/common SQL keywords and expressions

  - If pretty much every single SQL server includes supports, then it's a canidate.
  - It is NOT intended to include tons of vendor specific keywords (Oracle, MySQL,
    PostgreSQL) although the list of data types is purposely a bit more expansive.
  - For more specific SQL grammars please see:
    - PostgreSQL and PL/pgSQL - core
    - T-SQL - https://github.com/highlightjs/highlightjs-tsql
    - sql_more (core)

   */

  function sql(hljs) {
    const regex = hljs.regex;
    const COMMENT_MODE = hljs.COMMENT('--', '$');
    const STRING = {
      className: 'string',
      variants: [
        {
          begin: /'/,
          end: /'/,
          contains: [ { begin: /''/ } ]
        }
      ]
    };
    const QUOTED_IDENTIFIER = {
      begin: /"/,
      end: /"/,
      contains: [ { begin: /""/ } ]
    };

    const LITERALS = [
      "true",
      "false",
      // Not sure it's correct to call NULL literal, and clauses like IS [NOT] NULL look strange that way.
      // "null",
      "unknown"
    ];

    const MULTI_WORD_TYPES = [
      "double precision",
      "large object",
      "with timezone",
      "without timezone"
    ];

    const TYPES = [
      'bigint',
      'binary',
      'blob',
      'boolean',
      'char',
      'character',
      'clob',
      'date',
      'dec',
      'decfloat',
      'decimal',
      'float',
      'int',
      'integer',
      'interval',
      'nchar',
      'nclob',
      'national',
      'numeric',
      'real',
      'row',
      'smallint',
      'time',
      'timestamp',
      'varchar',
      'varying', // modifier (character varying)
      'varbinary'
    ];

    const NON_RESERVED_WORDS = [
      "add",
      "asc",
      "collation",
      "desc",
      "final",
      "first",
      "last",
      "view"
    ];

    // https://jakewheat.github.io/sql-overview/sql-2016-foundation-grammar.html#reserved-word
    const RESERVED_WORDS = [
      "abs",
      "acos",
      "all",
      "allocate",
      "alter",
      "and",
      "any",
      "are",
      "array",
      "array_agg",
      "array_max_cardinality",
      "as",
      "asensitive",
      "asin",
      "asymmetric",
      "at",
      "atan",
      "atomic",
      "authorization",
      "avg",
      "begin",
      "begin_frame",
      "begin_partition",
      "between",
      "bigint",
      "binary",
      "blob",
      "boolean",
      "both",
      "by",
      "call",
      "called",
      "cardinality",
      "cascaded",
      "case",
      "cast",
      "ceil",
      "ceiling",
      "char",
      "char_length",
      "character",
      "character_length",
      "check",
      "classifier",
      "clob",
      "close",
      "coalesce",
      "collate",
      "collect",
      "column",
      "commit",
      "condition",
      "connect",
      "constraint",
      "contains",
      "convert",
      "copy",
      "corr",
      "corresponding",
      "cos",
      "cosh",
      "count",
      "covar_pop",
      "covar_samp",
      "create",
      "cross",
      "cube",
      "cume_dist",
      "current",
      "current_catalog",
      "current_date",
      "current_default_transform_group",
      "current_path",
      "current_role",
      "current_row",
      "current_schema",
      "current_time",
      "current_timestamp",
      "current_path",
      "current_role",
      "current_transform_group_for_type",
      "current_user",
      "cursor",
      "cycle",
      "date",
      "day",
      "deallocate",
      "dec",
      "decimal",
      "decfloat",
      "declare",
      "default",
      "define",
      "delete",
      "dense_rank",
      "deref",
      "describe",
      "deterministic",
      "disconnect",
      "distinct",
      "double",
      "drop",
      "dynamic",
      "each",
      "element",
      "else",
      "empty",
      "end",
      "end_frame",
      "end_partition",
      "end-exec",
      "equals",
      "escape",
      "every",
      "except",
      "exec",
      "execute",
      "exists",
      "exp",
      "external",
      "extract",
      "false",
      "fetch",
      "filter",
      "first_value",
      "float",
      "floor",
      "for",
      "foreign",
      "frame_row",
      "free",
      "from",
      "full",
      "function",
      "fusion",
      "get",
      "global",
      "grant",
      "group",
      "grouping",
      "groups",
      "having",
      "hold",
      "hour",
      "identity",
      "in",
      "indicator",
      "initial",
      "inner",
      "inout",
      "insensitive",
      "insert",
      "int",
      "integer",
      "intersect",
      "intersection",
      "interval",
      "into",
      "is",
      "join",
      "json_array",
      "json_arrayagg",
      "json_exists",
      "json_object",
      "json_objectagg",
      "json_query",
      "json_table",
      "json_table_primitive",
      "json_value",
      "lag",
      "language",
      "large",
      "last_value",
      "lateral",
      "lead",
      "leading",
      "left",
      "like",
      "like_regex",
      "listagg",
      "ln",
      "local",
      "localtime",
      "localtimestamp",
      "log",
      "log10",
      "lower",
      "match",
      "match_number",
      "match_recognize",
      "matches",
      "max",
      "member",
      "merge",
      "method",
      "min",
      "minute",
      "mod",
      "modifies",
      "module",
      "month",
      "multiset",
      "national",
      "natural",
      "nchar",
      "nclob",
      "new",
      "no",
      "none",
      "normalize",
      "not",
      "nth_value",
      "ntile",
      "null",
      "nullif",
      "numeric",
      "octet_length",
      "occurrences_regex",
      "of",
      "offset",
      "old",
      "omit",
      "on",
      "one",
      "only",
      "open",
      "or",
      "order",
      "out",
      "outer",
      "over",
      "overlaps",
      "overlay",
      "parameter",
      "partition",
      "pattern",
      "per",
      "percent",
      "percent_rank",
      "percentile_cont",
      "percentile_disc",
      "period",
      "portion",
      "position",
      "position_regex",
      "power",
      "precedes",
      "precision",
      "prepare",
      "primary",
      "procedure",
      "ptf",
      "range",
      "rank",
      "reads",
      "real",
      "recursive",
      "ref",
      "references",
      "referencing",
      "regr_avgx",
      "regr_avgy",
      "regr_count",
      "regr_intercept",
      "regr_r2",
      "regr_slope",
      "regr_sxx",
      "regr_sxy",
      "regr_syy",
      "release",
      "result",
      "return",
      "returns",
      "revoke",
      "right",
      "rollback",
      "rollup",
      "row",
      "row_number",
      "rows",
      "running",
      "savepoint",
      "scope",
      "scroll",
      "search",
      "second",
      "seek",
      "select",
      "sensitive",
      "session_user",
      "set",
      "show",
      "similar",
      "sin",
      "sinh",
      "skip",
      "smallint",
      "some",
      "specific",
      "specifictype",
      "sql",
      "sqlexception",
      "sqlstate",
      "sqlwarning",
      "sqrt",
      "start",
      "static",
      "stddev_pop",
      "stddev_samp",
      "submultiset",
      "subset",
      "substring",
      "substring_regex",
      "succeeds",
      "sum",
      "symmetric",
      "system",
      "system_time",
      "system_user",
      "table",
      "tablesample",
      "tan",
      "tanh",
      "then",
      "time",
      "timestamp",
      "timezone_hour",
      "timezone_minute",
      "to",
      "trailing",
      "translate",
      "translate_regex",
      "translation",
      "treat",
      "trigger",
      "trim",
      "trim_array",
      "true",
      "truncate",
      "uescape",
      "union",
      "unique",
      "unknown",
      "unnest",
      "update",
      "upper",
      "user",
      "using",
      "value",
      "values",
      "value_of",
      "var_pop",
      "var_samp",
      "varbinary",
      "varchar",
      "varying",
      "versioning",
      "when",
      "whenever",
      "where",
      "width_bucket",
      "window",
      "with",
      "within",
      "without",
      "year",
    ];

    // these are reserved words we have identified to be functions
    // and should only be highlighted in a dispatch-like context
    // ie, array_agg(...), etc.
    const RESERVED_FUNCTIONS = [
      "abs",
      "acos",
      "array_agg",
      "asin",
      "atan",
      "avg",
      "cast",
      "ceil",
      "ceiling",
      "coalesce",
      "corr",
      "cos",
      "cosh",
      "count",
      "covar_pop",
      "covar_samp",
      "cume_dist",
      "dense_rank",
      "deref",
      "element",
      "exp",
      "extract",
      "first_value",
      "floor",
      "json_array",
      "json_arrayagg",
      "json_exists",
      "json_object",
      "json_objectagg",
      "json_query",
      "json_table",
      "json_table_primitive",
      "json_value",
      "lag",
      "last_value",
      "lead",
      "listagg",
      "ln",
      "log",
      "log10",
      "lower",
      "max",
      "min",
      "mod",
      "nth_value",
      "ntile",
      "nullif",
      "percent_rank",
      "percentile_cont",
      "percentile_disc",
      "position",
      "position_regex",
      "power",
      "rank",
      "regr_avgx",
      "regr_avgy",
      "regr_count",
      "regr_intercept",
      "regr_r2",
      "regr_slope",
      "regr_sxx",
      "regr_sxy",
      "regr_syy",
      "row_number",
      "sin",
      "sinh",
      "sqrt",
      "stddev_pop",
      "stddev_samp",
      "substring",
      "substring_regex",
      "sum",
      "tan",
      "tanh",
      "translate",
      "translate_regex",
      "treat",
      "trim",
      "trim_array",
      "unnest",
      "upper",
      "value_of",
      "var_pop",
      "var_samp",
      "width_bucket",
    ];

    // these functions can
    const POSSIBLE_WITHOUT_PARENS = [
      "current_catalog",
      "current_date",
      "current_default_transform_group",
      "current_path",
      "current_role",
      "current_schema",
      "current_transform_group_for_type",
      "current_user",
      "session_user",
      "system_time",
      "system_user",
      "current_time",
      "localtime",
      "current_timestamp",
      "localtimestamp"
    ];

    // those exist to boost relevance making these very
    // "SQL like" keyword combos worth +1 extra relevance
    const COMBOS = [
      "create table",
      "insert into",
      "primary key",
      "foreign key",
      "not null",
      "alter table",
      "add constraint",
      "grouping sets",
      "on overflow",
      "character set",
      "respect nulls",
      "ignore nulls",
      "nulls first",
      "nulls last",
      "depth first",
      "breadth first"
    ];

    const FUNCTIONS = RESERVED_FUNCTIONS;

    const KEYWORDS = [
      ...RESERVED_WORDS,
      ...NON_RESERVED_WORDS
    ].filter((keyword) => {
      return !RESERVED_FUNCTIONS.includes(keyword);
    });

    const VARIABLE = {
      className: "variable",
      begin: /@[a-z0-9][a-z0-9_]*/,
    };

    const OPERATOR = {
      className: "operator",
      begin: /[-+*/=%^~]|&&?|\|\|?|!=?|<(?:=>?|<|>)?|>[>=]?/,
      relevance: 0,
    };

    const FUNCTION_CALL = {
      begin: regex.concat(/\b/, regex.either(...FUNCTIONS), /\s*\(/),
      relevance: 0,
      keywords: { built_in: FUNCTIONS }
    };

    // keywords with less than 3 letters are reduced in relevancy
    function reduceRelevancy(list, {
      exceptions, when
    } = {}) {
      const qualifyFn = when;
      exceptions = exceptions || [];
      return list.map((item) => {
        if (item.match(/\|\d+$/) || exceptions.includes(item)) {
          return item;
        } else if (qualifyFn(item)) {
          return `${item}|0`;
        } else {
          return item;
        }
      });
    }

    return {
      name: 'SQL',
      case_insensitive: true,
      // does not include {} or HTML tags `</`
      illegal: /[{}]|<\//,
      keywords: {
        $pattern: /\b[\w\.]+/,
        keyword:
          reduceRelevancy(KEYWORDS, { when: (x) => x.length < 3 }),
        literal: LITERALS,
        type: TYPES,
        built_in: POSSIBLE_WITHOUT_PARENS
      },
      contains: [
        {
          begin: regex.either(...COMBOS),
          relevance: 0,
          keywords: {
            $pattern: /[\w\.]+/,
            keyword: KEYWORDS.concat(COMBOS),
            literal: LITERALS,
            type: TYPES
          },
        },
        {
          className: "type",
          begin: regex.either(...MULTI_WORD_TYPES)
        },
        FUNCTION_CALL,
        VARIABLE,
        STRING,
        QUOTED_IDENTIFIER,
        hljs.C_NUMBER_MODE,
        hljs.C_BLOCK_COMMENT_MODE,
        COMMENT_MODE,
        OPERATOR
      ]
    };
  }

  const keywordWrapper = keyword => concat(
    /\b/,
    keyword,
    /\w$/.test(keyword) ? /\b/ : /\B/
  );

  // Keywords that require a leading dot.
  const dotKeywords = [
    'Protocol', // contextual
    'Type' // contextual
  ].map(keywordWrapper);

  // Keywords that may have a leading dot.
  const optionalDotKeywords = [
    'init',
    'self'
  ].map(keywordWrapper);

  // should register as keyword, not type
  const keywordTypes = [
    'Any',
    'Self'
  ];

  // Regular keywords and literals.
  const keywords = [
    // strings below will be fed into the regular `keywords` engine while regex
    // will result in additional modes being created to scan for those keywords to
    // avoid conflicts with other rules
    'actor',
    'any', // contextual
    'associatedtype',
    'async',
    'await',
    /as\?/, // operator
    /as!/, // operator
    'as', // operator
    'borrowing', // contextual
    'break',
    'case',
    'catch',
    'class',
    'consume', // contextual
    'consuming', // contextual
    'continue',
    'convenience', // contextual
    'copy', // contextual
    'default',
    'defer',
    'deinit',
    'didSet', // contextual
    'distributed',
    'do',
    'dynamic', // contextual
    'each',
    'else',
    'enum',
    'extension',
    'fallthrough',
    /fileprivate\(set\)/,
    'fileprivate',
    'final', // contextual
    'for',
    'func',
    'get', // contextual
    'guard',
    'if',
    'import',
    'indirect', // contextual
    'infix', // contextual
    /init\?/,
    /init!/,
    'inout',
    /internal\(set\)/,
    'internal',
    'in',
    'is', // operator
    'isolated', // contextual
    'nonisolated', // contextual
    'lazy', // contextual
    'let',
    'macro',
    'mutating', // contextual
    'nonmutating', // contextual
    /open\(set\)/, // contextual
    'open', // contextual
    'operator',
    'optional', // contextual
    'override', // contextual
    'package',
    'postfix', // contextual
    'precedencegroup',
    'prefix', // contextual
    /private\(set\)/,
    'private',
    'protocol',
    /public\(set\)/,
    'public',
    'repeat',
    'required', // contextual
    'rethrows',
    'return',
    'set', // contextual
    'some', // contextual
    'static',
    'struct',
    'subscript',
    'super',
    'switch',
    'throws',
    'throw',
    /try\?/, // operator
    /try!/, // operator
    'try', // operator
    'typealias',
    /unowned\(safe\)/, // contextual
    /unowned\(unsafe\)/, // contextual
    'unowned', // contextual
    'var',
    'weak', // contextual
    'where',
    'while',
    'willSet' // contextual
  ];

  // NOTE: Contextual keywords are reserved only in specific contexts.
  // Ideally, these should be matched using modes to avoid false positives.

  // Literals.
  const literals = [
    'false',
    'nil',
    'true'
  ];

  // Keywords used in precedence groups.
  const precedencegroupKeywords = [
    'assignment',
    'associativity',
    'higherThan',
    'left',
    'lowerThan',
    'none',
    'right'
  ];

  // Keywords that start with a number sign (#).
  // #(un)available is handled separately.
  const numberSignKeywords = [
    '#colorLiteral',
    '#column',
    '#dsohandle',
    '#else',
    '#elseif',
    '#endif',
    '#error',
    '#file',
    '#fileID',
    '#fileLiteral',
    '#filePath',
    '#function',
    '#if',
    '#imageLiteral',
    '#keyPath',
    '#line',
    '#selector',
    '#sourceLocation',
    '#warning'
  ];

  // Global functions in the Standard Library.
  const builtIns$1 = [
    'abs',
    'all',
    'any',
    'assert',
    'assertionFailure',
    'debugPrint',
    'dump',
    'fatalError',
    'getVaList',
    'isKnownUniquelyReferenced',
    'max',
    'min',
    'numericCast',
    'pointwiseMax',
    'pointwiseMin',
    'precondition',
    'preconditionFailure',
    'print',
    'readLine',
    'repeatElement',
    'sequence',
    'stride',
    'swap',
    'swift_unboxFromSwiftValueWithType',
    'transcode',
    'type',
    'unsafeBitCast',
    'unsafeDowncast',
    'withExtendedLifetime',
    'withUnsafeMutablePointer',
    'withUnsafePointer',
    'withVaList',
    'withoutActuallyEscaping',
    'zip'
  ];

  // Valid first characters for operators.
  const operatorHead = either(
    /[/=\-+!*%<>&|^~?]/,
    /[\u00A1-\u00A7]/,
    /[\u00A9\u00AB]/,
    /[\u00AC\u00AE]/,
    /[\u00B0\u00B1]/,
    /[\u00B6\u00BB\u00BF\u00D7\u00F7]/,
    /[\u2016-\u2017]/,
    /[\u2020-\u2027]/,
    /[\u2030-\u203E]/,
    /[\u2041-\u2053]/,
    /[\u2055-\u205E]/,
    /[\u2190-\u23FF]/,
    /[\u2500-\u2775]/,
    /[\u2794-\u2BFF]/,
    /[\u2E00-\u2E7F]/,
    /[\u3001-\u3003]/,
    /[\u3008-\u3020]/,
    /[\u3030]/
  );

  // Valid characters for operators.
  const operatorCharacter = either(
    operatorHead,
    /[\u0300-\u036F]/,
    /[\u1DC0-\u1DFF]/,
    /[\u20D0-\u20FF]/,
    /[\uFE00-\uFE0F]/,
    /[\uFE20-\uFE2F]/
    // TODO: The following characters are also allowed, but the regex isn't supported yet.
    // /[\u{E0100}-\u{E01EF}]/u
  );

  // Valid operator.
  const operator = concat(operatorHead, operatorCharacter, '*');

  // Valid first characters for identifiers.
  const identifierHead = either(
    /[a-zA-Z_]/,
    /[\u00A8\u00AA\u00AD\u00AF\u00B2-\u00B5\u00B7-\u00BA]/,
    /[\u00BC-\u00BE\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u00FF]/,
    /[\u0100-\u02FF\u0370-\u167F\u1681-\u180D\u180F-\u1DBF]/,
    /[\u1E00-\u1FFF]/,
    /[\u200B-\u200D\u202A-\u202E\u203F-\u2040\u2054\u2060-\u206F]/,
    /[\u2070-\u20CF\u2100-\u218F\u2460-\u24FF\u2776-\u2793]/,
    /[\u2C00-\u2DFF\u2E80-\u2FFF]/,
    /[\u3004-\u3007\u3021-\u302F\u3031-\u303F\u3040-\uD7FF]/,
    /[\uF900-\uFD3D\uFD40-\uFDCF\uFDF0-\uFE1F\uFE30-\uFE44]/,
    /[\uFE47-\uFEFE\uFF00-\uFFFD]/ // Should be /[\uFE47-\uFFFD]/, but we have to exclude FEFF.
    // The following characters are also allowed, but the regexes aren't supported yet.
    // /[\u{10000}-\u{1FFFD}\u{20000-\u{2FFFD}\u{30000}-\u{3FFFD}\u{40000}-\u{4FFFD}]/u,
    // /[\u{50000}-\u{5FFFD}\u{60000-\u{6FFFD}\u{70000}-\u{7FFFD}\u{80000}-\u{8FFFD}]/u,
    // /[\u{90000}-\u{9FFFD}\u{A0000-\u{AFFFD}\u{B0000}-\u{BFFFD}\u{C0000}-\u{CFFFD}]/u,
    // /[\u{D0000}-\u{DFFFD}\u{E0000-\u{EFFFD}]/u
  );

  // Valid characters for identifiers.
  const identifierCharacter = either(
    identifierHead,
    /\d/,
    /[\u0300-\u036F\u1DC0-\u1DFF\u20D0-\u20FF\uFE20-\uFE2F]/
  );

  // Valid identifier.
  const identifier = concat(identifierHead, identifierCharacter, '*');

  // Valid type identifier.
  const typeIdentifier = concat(/[A-Z]/, identifierCharacter, '*');

  // Built-in attributes, which are highlighted as keywords.
  // @available is handled separately.
  // https://docs.swift.org/swift-book/documentation/the-swift-programming-language/attributes
  const keywordAttributes = [
    'attached',
    'autoclosure',
    concat(/convention\(/, either('swift', 'block', 'c'), /\)/),
    'discardableResult',
    'dynamicCallable',
    'dynamicMemberLookup',
    'escaping',
    'freestanding',
    'frozen',
    'GKInspectable',
    'IBAction',
    'IBDesignable',
    'IBInspectable',
    'IBOutlet',
    'IBSegueAction',
    'inlinable',
    'main',
    'nonobjc',
    'NSApplicationMain',
    'NSCopying',
    'NSManaged',
    concat(/objc\(/, identifier, /\)/),
    'objc',
    'objcMembers',
    'propertyWrapper',
    'requires_stored_property_inits',
    'resultBuilder',
    'Sendable',
    'testable',
    'UIApplicationMain',
    'unchecked',
    'unknown',
    'usableFromInline',
    'warn_unqualified_access'
  ];

  // Contextual keywords used in @available and #(un)available.
  const availabilityKeywords = [
    'iOS',
    'iOSApplicationExtension',
    'macOS',
    'macOSApplicationExtension',
    'macCatalyst',
    'macCatalystApplicationExtension',
    'watchOS',
    'watchOSApplicationExtension',
    'tvOS',
    'tvOSApplicationExtension',
    'swift'
  ];

  /*
  Language: Swift
  Description: Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns.
  Author: Steven Van Impe <steven.vanimpe@icloud.com>
  Contributors: Chris Eidhof <chris@eidhof.nl>, Nate Cook <natecook@gmail.com>, Alexander Lichter <manniL@gmx.net>, Richard Gibson <gibson042@github>
  Website: https://swift.org
  Category: common, system
  */


  /** @type LanguageFn */
  function swift(hljs) {
    const WHITESPACE = {
      match: /\s+/,
      relevance: 0
    };
    // https://docs.swift.org/swift-book/ReferenceManual/LexicalStructure.html#ID411
    const BLOCK_COMMENT = hljs.COMMENT(
      '/\\*',
      '\\*/',
      { contains: [ 'self' ] }
    );
    const COMMENTS = [
      hljs.C_LINE_COMMENT_MODE,
      BLOCK_COMMENT
    ];

    // https://docs.swift.org/swift-book/ReferenceManual/LexicalStructure.html#ID413
    // https://docs.swift.org/swift-book/ReferenceManual/zzSummaryOfTheGrammar.html
    const DOT_KEYWORD = {
      match: [
        /\./,
        either(...dotKeywords, ...optionalDotKeywords)
      ],
      className: { 2: "keyword" }
    };
    const KEYWORD_GUARD = {
      // Consume .keyword to prevent highlighting properties and methods as keywords.
      match: concat(/\./, either(...keywords)),
      relevance: 0
    };
    const PLAIN_KEYWORDS = keywords
      .filter(kw => typeof kw === 'string')
      .concat([ "_|0" ]); // seems common, so 0 relevance
    const REGEX_KEYWORDS = keywords
      .filter(kw => typeof kw !== 'string') // find regex
      .concat(keywordTypes)
      .map(keywordWrapper);
    const KEYWORD = { variants: [
      {
        className: 'keyword',
        match: either(...REGEX_KEYWORDS, ...optionalDotKeywords)
      }
    ] };
    // find all the regular keywords
    const KEYWORDS = {
      $pattern: either(
        /\b\w+/, // regular keywords
        /#\w+/ // number keywords
      ),
      keyword: PLAIN_KEYWORDS
        .concat(numberSignKeywords),
      literal: literals
    };
    const KEYWORD_MODES = [
      DOT_KEYWORD,
      KEYWORD_GUARD,
      KEYWORD
    ];

    // https://github.com/apple/swift/tree/main/stdlib/public/core
    const BUILT_IN_GUARD = {
      // Consume .built_in to prevent highlighting properties and methods.
      match: concat(/\./, either(...builtIns$1)),
      relevance: 0
    };
    const BUILT_IN = {
      className: 'built_in',
      match: concat(/\b/, either(...builtIns$1), /(?=\()/)
    };
    const BUILT_INS = [
      BUILT_IN_GUARD,
      BUILT_IN
    ];

    // https://docs.swift.org/swift-book/ReferenceManual/LexicalStructure.html#ID418
    const OPERATOR_GUARD = {
      // Prevent -> from being highlighting as an operator.
      match: /->/,
      relevance: 0
    };
    const OPERATOR = {
      className: 'operator',
      relevance: 0,
      variants: [
        { match: operator },
        {
          // dot-operator: only operators that start with a dot are allowed to use dots as
          // characters (..., ...<, .*, etc). So there rule here is: a dot followed by one or more
          // characters that may also include dots.
          match: `\\.(\\.|${operatorCharacter})+` }
      ]
    };
    const OPERATORS = [
      OPERATOR_GUARD,
      OPERATOR
    ];

    // https://docs.swift.org/swift-book/ReferenceManual/LexicalStructure.html#grammar_numeric-literal
    // TODO: Update for leading `-` after lookbehind is supported everywhere
    const decimalDigits = '([0-9]_*)+';
    const hexDigits = '([0-9a-fA-F]_*)+';
    const NUMBER = {
      className: 'number',
      relevance: 0,
      variants: [
        // decimal floating-point-literal (subsumes decimal-literal)
        { match: `\\b(${decimalDigits})(\\.(${decimalDigits}))?` + `([eE][+-]?(${decimalDigits}))?\\b` },
        // hexadecimal floating-point-literal (subsumes hexadecimal-literal)
        { match: `\\b0x(${hexDigits})(\\.(${hexDigits}))?` + `([pP][+-]?(${decimalDigits}))?\\b` },
        // octal-literal
        { match: /\b0o([0-7]_*)+\b/ },
        // binary-literal
        { match: /\b0b([01]_*)+\b/ }
      ]
    };

    // https://docs.swift.org/swift-book/ReferenceManual/LexicalStructure.html#grammar_string-literal
    const ESCAPED_CHARACTER = (rawDelimiter = "") => ({
      className: 'subst',
      variants: [
        { match: concat(/\\/, rawDelimiter, /[0\\tnr"']/) },
        { match: concat(/\\/, rawDelimiter, /u\{[0-9a-fA-F]{1,8}\}/) }
      ]
    });
    const ESCAPED_NEWLINE = (rawDelimiter = "") => ({
      className: 'subst',
      match: concat(/\\/, rawDelimiter, /[\t ]*(?:[\r\n]|\r\n)/)
    });
    const INTERPOLATION = (rawDelimiter = "") => ({
      className: 'subst',
      label: "interpol",
      begin: concat(/\\/, rawDelimiter, /\(/),
      end: /\)/
    });
    const MULTILINE_STRING = (rawDelimiter = "") => ({
      begin: concat(rawDelimiter, /"""/),
      end: concat(/"""/, rawDelimiter),
      contains: [
        ESCAPED_CHARACTER(rawDelimiter),
        ESCAPED_NEWLINE(rawDelimiter),
        INTERPOLATION(rawDelimiter)
      ]
    });
    const SINGLE_LINE_STRING = (rawDelimiter = "") => ({
      begin: concat(rawDelimiter, /"/),
      end: concat(/"/, rawDelimiter),
      contains: [
        ESCAPED_CHARACTER(rawDelimiter),
        INTERPOLATION(rawDelimiter)
      ]
    });
    const STRING = {
      className: 'string',
      variants: [
        MULTILINE_STRING(),
        MULTILINE_STRING("#"),
        MULTILINE_STRING("##"),
        MULTILINE_STRING("###"),
        SINGLE_LINE_STRING(),
        SINGLE_LINE_STRING("#"),
        SINGLE_LINE_STRING("##"),
        SINGLE_LINE_STRING("###")
      ]
    };

    const REGEXP_CONTENTS = [
      hljs.BACKSLASH_ESCAPE,
      {
        begin: /\[/,
        end: /\]/,
        relevance: 0,
        contains: [ hljs.BACKSLASH_ESCAPE ]
      }
    ];

    const BARE_REGEXP_LITERAL = {
      begin: /\/[^\s](?=[^/\n]*\/)/,
      end: /\//,
      contains: REGEXP_CONTENTS
    };

    const EXTENDED_REGEXP_LITERAL = (rawDelimiter) => {
      const begin = concat(rawDelimiter, /\//);
      const end = concat(/\//, rawDelimiter);
      return {
        begin,
        end,
        contains: [
          ...REGEXP_CONTENTS,
          {
            scope: "comment",
            begin: `#(?!.*${end})`,
            end: /$/,
          },
        ],
      };
    };

    // https://docs.swift.org/swift-book/documentation/the-swift-programming-language/lexicalstructure/#Regular-Expression-Literals
    const REGEXP = {
      scope: "regexp",
      variants: [
        EXTENDED_REGEXP_LITERAL('###'),
        EXTENDED_REGEXP_LITERAL('##'),
        EXTENDED_REGEXP_LITERAL('#'),
        BARE_REGEXP_LITERAL
      ]
    };

    // https://docs.swift.org/swift-book/ReferenceManual/LexicalStructure.html#ID412
    const QUOTED_IDENTIFIER = { match: concat(/`/, identifier, /`/) };
    const IMPLICIT_PARAMETER = {
      className: 'variable',
      match: /\$\d+/
    };
    const PROPERTY_WRAPPER_PROJECTION = {
      className: 'variable',
      match: `\\$${identifierCharacter}+`
    };
    const IDENTIFIERS = [
      QUOTED_IDENTIFIER,
      IMPLICIT_PARAMETER,
      PROPERTY_WRAPPER_PROJECTION
    ];

    // https://docs.swift.org/swift-book/ReferenceManual/Attributes.html
    const AVAILABLE_ATTRIBUTE = {
      match: /(@|#(un)?)available/,
      scope: 'keyword',
      starts: { contains: [
        {
          begin: /\(/,
          end: /\)/,
          keywords: availabilityKeywords,
          contains: [
            ...OPERATORS,
            NUMBER,
            STRING
          ]
        }
      ] }
    };

    const KEYWORD_ATTRIBUTE = {
      scope: 'keyword',
      match: concat(/@/, either(...keywordAttributes), lookahead(either(/\(/, /\s+/))),
    };

    const USER_DEFINED_ATTRIBUTE = {
      scope: 'meta',
      match: concat(/@/, identifier)
    };

    const ATTRIBUTES = [
      AVAILABLE_ATTRIBUTE,
      KEYWORD_ATTRIBUTE,
      USER_DEFINED_ATTRIBUTE
    ];

    // https://docs.swift.org/swift-book/ReferenceManual/Types.html
    const TYPE = {
      match: lookahead(/\b[A-Z]/),
      relevance: 0,
      contains: [
        { // Common Apple frameworks, for relevance boost
          className: 'type',
          match: concat(/(AV|CA|CF|CG|CI|CL|CM|CN|CT|MK|MP|MTK|MTL|NS|SCN|SK|UI|WK|XC)/, identifierCharacter, '+')
        },
        { // Type identifier
          className: 'type',
          match: typeIdentifier,
          relevance: 0
        },
        { // Optional type
          match: /[?!]+/,
          relevance: 0
        },
        { // Variadic parameter
          match: /\.\.\./,
          relevance: 0
        },
        { // Protocol composition
          match: concat(/\s+&\s+/, lookahead(typeIdentifier)),
          relevance: 0
        }
      ]
    };
    const GENERIC_ARGUMENTS = {
      begin: /</,
      end: />/,
      keywords: KEYWORDS,
      contains: [
        ...COMMENTS,
        ...KEYWORD_MODES,
        ...ATTRIBUTES,
        OPERATOR_GUARD,
        TYPE
      ]
    };
    TYPE.contains.push(GENERIC_ARGUMENTS);

    // https://docs.swift.org/swift-book/ReferenceManual/Expressions.html#ID552
    // Prevents element names from being highlighted as keywords.
    const TUPLE_ELEMENT_NAME = {
      match: concat(identifier, /\s*:/),
      keywords: "_|0",
      relevance: 0
    };
    // Matches tuples as well as the parameter list of a function type.
    const TUPLE = {
      begin: /\(/,
      end: /\)/,
      relevance: 0,
      keywords: KEYWORDS,
      contains: [
        'self',
        TUPLE_ELEMENT_NAME,
        ...COMMENTS,
        REGEXP,
        ...KEYWORD_MODES,
        ...BUILT_INS,
        ...OPERATORS,
        NUMBER,
        STRING,
        ...IDENTIFIERS,
        ...ATTRIBUTES,
        TYPE
      ]
    };

    const GENERIC_PARAMETERS = {
      begin: /</,
      end: />/,
      keywords: 'repeat each',
      contains: [
        ...COMMENTS,
        TYPE
      ]
    };
    const FUNCTION_PARAMETER_NAME = {
      begin: either(
        lookahead(concat(identifier, /\s*:/)),
        lookahead(concat(identifier, /\s+/, identifier, /\s*:/))
      ),
      end: /:/,
      relevance: 0,
      contains: [
        {
          className: 'keyword',
          match: /\b_\b/
        },
        {
          className: 'params',
          match: identifier
        }
      ]
    };
    const FUNCTION_PARAMETERS = {
      begin: /\(/,
      end: /\)/,
      keywords: KEYWORDS,
      contains: [
        FUNCTION_PARAMETER_NAME,
        ...COMMENTS,
        ...KEYWORD_MODES,
        ...OPERATORS,
        NUMBER,
        STRING,
        ...ATTRIBUTES,
        TYPE,
        TUPLE
      ],
      endsParent: true,
      illegal: /["']/
    };
    // https://docs.swift.org/swift-book/ReferenceManual/Declarations.html#ID362
    // https://docs.swift.org/swift-book/documentation/the-swift-programming-language/declarations/#Macro-Declaration
    const FUNCTION_OR_MACRO = {
      match: [
        /(func|macro)/,
        /\s+/,
        either(QUOTED_IDENTIFIER.match, identifier, operator)
      ],
      className: {
        1: "keyword",
        3: "title.function"
      },
      contains: [
        GENERIC_PARAMETERS,
        FUNCTION_PARAMETERS,
        WHITESPACE
      ],
      illegal: [
        /\[/,
        /%/
      ]
    };

    // https://docs.swift.org/swift-book/ReferenceManual/Declarations.html#ID375
    // https://docs.swift.org/swift-book/ReferenceManual/Declarations.html#ID379
    const INIT_SUBSCRIPT = {
      match: [
        /\b(?:subscript|init[?!]?)/,
        /\s*(?=[<(])/,
      ],
      className: { 1: "keyword" },
      contains: [
        GENERIC_PARAMETERS,
        FUNCTION_PARAMETERS,
        WHITESPACE
      ],
      illegal: /\[|%/
    };
    // https://docs.swift.org/swift-book/ReferenceManual/Declarations.html#ID380
    const OPERATOR_DECLARATION = {
      match: [
        /operator/,
        /\s+/,
        operator
      ],
      className: {
        1: "keyword",
        3: "title"
      }
    };

    // https://docs.swift.org/swift-book/ReferenceManual/Declarations.html#ID550
    const PRECEDENCEGROUP = {
      begin: [
        /precedencegroup/,
        /\s+/,
        typeIdentifier
      ],
      className: {
        1: "keyword",
        3: "title"
      },
      contains: [ TYPE ],
      keywords: [
        ...precedencegroupKeywords,
        ...literals
      ],
      end: /}/
    };

    const TYPE_DECLARATION = {
      begin: [
        /(struct|protocol|class|extension|enum|actor)/,
        /\s+/,
        identifier,
        /\s*/,
      ],
      beginScope: {
        1: "keyword",
        3: "title.class"
      },
      keywords: KEYWORDS,
      contains: [
        GENERIC_PARAMETERS,
        ...KEYWORD_MODES,
        {
          begin: /:/,
          end: /\{/,
          keywords: KEYWORDS,
          contains: [
            {
              scope: "title.class.inherited",
              match: typeIdentifier,
            },
            ...KEYWORD_MODES,
          ],
          relevance: 0,
        },
      ]
    };

    // Add supported submodes to string interpolation.
    for (const variant of STRING.variants) {
      const interpolation = variant.contains.find(mode => mode.label === "interpol");
      // TODO: Interpolation can contain any expression, so there's room for improvement here.
      interpolation.keywords = KEYWORDS;
      const submodes = [
        ...KEYWORD_MODES,
        ...BUILT_INS,
        ...OPERATORS,
        NUMBER,
        STRING,
        ...IDENTIFIERS
      ];
      interpolation.contains = [
        ...submodes,
        {
          begin: /\(/,
          end: /\)/,
          contains: [
            'self',
            ...submodes
          ]
        }
      ];
    }

    return {
      name: 'Swift',
      keywords: KEYWORDS,
      contains: [
        ...COMMENTS,
        FUNCTION_OR_MACRO,
        INIT_SUBSCRIPT,
        TYPE_DECLARATION,
        OPERATOR_DECLARATION,
        PRECEDENCEGROUP,
        {
          beginKeywords: 'import',
          end: /$/,
          contains: [ ...COMMENTS ],
          relevance: 0
        },
        REGEXP,
        ...KEYWORD_MODES,
        ...BUILT_INS,
        ...OPERATORS,
        NUMBER,
        STRING,
        ...IDENTIFIERS,
        ...ATTRIBUTES,
        TYPE,
        TUPLE
      ]
    };
  }

  /*
  Language: TypeScript
  Author: Panu Horsmalahti <panu.horsmalahti@iki.fi>
  Contributors: Ike Ku <dempfi@yahoo.com>
  Description: TypeScript is a strict superset of JavaScript
  Website: https://www.typescriptlang.org
  Category: common, scripting
  */


  /** @type LanguageFn */
  function typescript(hljs) {
    const tsLanguage = javascript(hljs);

    const IDENT_RE$1 = IDENT_RE;
    const TYPES = [
      "any",
      "void",
      "number",
      "boolean",
      "string",
      "object",
      "never",
      "symbol",
      "bigint",
      "unknown"
    ];
    const NAMESPACE = {
      begin: [
        /namespace/,
        /\s+/,
        hljs.IDENT_RE
      ],
      beginScope: {
        1: "keyword",
        3: "title.class"
      }
    };
    const INTERFACE = {
      beginKeywords: 'interface',
      end: /\{/,
      excludeEnd: true,
      keywords: {
        keyword: 'interface extends',
        built_in: TYPES
      },
      contains: [ tsLanguage.exports.CLASS_REFERENCE ]
    };
    const USE_STRICT = {
      className: 'meta',
      relevance: 10,
      begin: /^\s*['"]use strict['"]/
    };
    const TS_SPECIFIC_KEYWORDS = [
      "type",
      // "namespace",
      "interface",
      "public",
      "private",
      "protected",
      "implements",
      "declare",
      "abstract",
      "readonly",
      "enum",
      "override",
      "satisfies"
    ];

    /*
      namespace is a TS keyword but it's fine to use it as a variable name too.
      const message = 'foo';
      const namespace = 'bar';
    */

    const KEYWORDS$1 = {
      $pattern: IDENT_RE,
      keyword: KEYWORDS.concat(TS_SPECIFIC_KEYWORDS),
      literal: LITERALS,
      built_in: BUILT_INS.concat(TYPES),
      "variable.language": BUILT_IN_VARIABLES
    };
    const DECORATOR = {
      className: 'meta',
      begin: '@' + IDENT_RE$1,
    };

    const swapMode = (mode, label, replacement) => {
      const indx = mode.contains.findIndex(m => m.label === label);
      if (indx === -1) { throw new Error("can not find mode to replace"); }

      mode.contains.splice(indx, 1, replacement);
    };


    // this should update anywhere keywords is used since
    // it will be the same actual JS object
    Object.assign(tsLanguage.keywords, KEYWORDS$1);

    tsLanguage.exports.PARAMS_CONTAINS.push(DECORATOR);

    // highlight the function params
    const ATTRIBUTE_HIGHLIGHT = tsLanguage.contains.find(c => c.className === "attr");
    tsLanguage.exports.PARAMS_CONTAINS.push([
      tsLanguage.exports.CLASS_REFERENCE, // class reference for highlighting the params types
      ATTRIBUTE_HIGHLIGHT, // highlight the params key
    ]);
    tsLanguage.contains = tsLanguage.contains.concat([
      DECORATOR,
      NAMESPACE,
      INTERFACE,
    ]);

    // TS gets a simpler shebang rule than JS
    swapMode(tsLanguage, "shebang", hljs.SHEBANG());
    // JS use strict rule purposely excludes `asm` which makes no sense
    swapMode(tsLanguage, "use_strict", USE_STRICT);

    const functionDeclaration = tsLanguage.contains.find(m => m.label === "func.def");
    functionDeclaration.relevance = 0; // () => {} is more typical in TypeScript

    Object.assign(tsLanguage, {
      name: 'TypeScript',
      aliases: [
        'ts',
        'tsx',
        'mts',
        'cts'
      ]
    });

    return tsLanguage;
  }

  /*
  Language: Visual Basic .NET
  Description: Visual Basic .NET (VB.NET) is a multi-paradigm, object-oriented programming language, implemented on the .NET Framework.
  Authors: Poren Chiang <ren.chiang@gmail.com>, Jan Pilzer
  Website: https://docs.microsoft.com/dotnet/visual-basic/getting-started
  Category: common
  */

  /** @type LanguageFn */
  function vbnet(hljs) {
    const regex = hljs.regex;
    /**
     * Character Literal
     * Either a single character ("a"C) or an escaped double quote (""""C).
     */
    const CHARACTER = {
      className: 'string',
      begin: /"(""|[^/n])"C\b/
    };

    const STRING = {
      className: 'string',
      begin: /"/,
      end: /"/,
      illegal: /\n/,
      contains: [
        {
          // double quote escape
          begin: /""/ }
      ]
    };

    /** Date Literals consist of a date, a time, or both separated by whitespace, surrounded by # */
    const MM_DD_YYYY = /\d{1,2}\/\d{1,2}\/\d{4}/;
    const YYYY_MM_DD = /\d{4}-\d{1,2}-\d{1,2}/;
    const TIME_12H = /(\d|1[012])(:\d+){0,2} *(AM|PM)/;
    const TIME_24H = /\d{1,2}(:\d{1,2}){1,2}/;
    const DATE = {
      className: 'literal',
      variants: [
        {
          // #YYYY-MM-DD# (ISO-Date) or #M/D/YYYY# (US-Date)
          begin: regex.concat(/# */, regex.either(YYYY_MM_DD, MM_DD_YYYY), / *#/) },
        {
          // #H:mm[:ss]# (24h Time)
          begin: regex.concat(/# */, TIME_24H, / *#/) },
        {
          // #h[:mm[:ss]] A# (12h Time)
          begin: regex.concat(/# */, TIME_12H, / *#/) },
        {
          // date plus time
          begin: regex.concat(
            /# */,
            regex.either(YYYY_MM_DD, MM_DD_YYYY),
            / +/,
            regex.either(TIME_12H, TIME_24H),
            / *#/
          ) }
      ]
    };

    const NUMBER = {
      className: 'number',
      relevance: 0,
      variants: [
        {
          // Float
          begin: /\b\d[\d_]*((\.[\d_]+(E[+-]?[\d_]+)?)|(E[+-]?[\d_]+))[RFD@!#]?/ },
        {
          // Integer (base 10)
          begin: /\b\d[\d_]*((U?[SIL])|[%&])?/ },
        {
          // Integer (base 16)
          begin: /&H[\dA-F_]+((U?[SIL])|[%&])?/ },
        {
          // Integer (base 8)
          begin: /&O[0-7_]+((U?[SIL])|[%&])?/ },
        {
          // Integer (base 2)
          begin: /&B[01_]+((U?[SIL])|[%&])?/ }
      ]
    };

    const LABEL = {
      className: 'label',
      begin: /^\w+:/
    };

    const DOC_COMMENT = hljs.COMMENT(/'''/, /$/, { contains: [
      {
        className: 'doctag',
        begin: /<\/?/,
        end: />/
      }
    ] });

    const COMMENT = hljs.COMMENT(null, /$/, { variants: [
      { begin: /'/ },
      {
        // TODO: Use multi-class for leading spaces
        begin: /([\t ]|^)REM(?=\s)/ }
    ] });

    const DIRECTIVES = {
      className: 'meta',
      // TODO: Use multi-class for indentation once available
      begin: /[\t ]*#(const|disable|else|elseif|enable|end|externalsource|if|region)\b/,
      end: /$/,
      keywords: { keyword:
          'const disable else elseif enable end externalsource if region then' },
      contains: [ COMMENT ]
    };

    return {
      name: 'Visual Basic .NET',
      aliases: [ 'vb' ],
      case_insensitive: true,
      classNameAliases: { label: 'symbol' },
      keywords: {
        keyword:
          'addhandler alias aggregate ansi as async assembly auto binary by byref byval ' /* a-b */
          + 'call case catch class compare const continue custom declare default delegate dim distinct do ' /* c-d */
          + 'each equals else elseif end enum erase error event exit explicit finally for friend from function ' /* e-f */
          + 'get global goto group handles if implements imports in inherits interface into iterator ' /* g-i */
          + 'join key let lib loop me mid module mustinherit mustoverride mybase myclass ' /* j-m */
          + 'namespace narrowing new next notinheritable notoverridable ' /* n */
          + 'of off on operator option optional order overloads overridable overrides ' /* o */
          + 'paramarray partial preserve private property protected public ' /* p */
          + 'raiseevent readonly redim removehandler resume return ' /* r */
          + 'select set shadows shared skip static step stop structure strict sub synclock ' /* s */
          + 'take text then throw to try unicode until using when where while widening with withevents writeonly yield' /* t-y */,
        built_in:
          // Operators https://docs.microsoft.com/dotnet/visual-basic/language-reference/operators
          'addressof and andalso await directcast gettype getxmlnamespace is isfalse isnot istrue like mod nameof new not or orelse trycast typeof xor '
          // Type Conversion Functions https://docs.microsoft.com/dotnet/visual-basic/language-reference/functions/type-conversion-functions
          + 'cbool cbyte cchar cdate cdbl cdec cint clng cobj csbyte cshort csng cstr cuint culng cushort',
        type:
          // Data types https://docs.microsoft.com/dotnet/visual-basic/language-reference/data-types
          'boolean byte char date decimal double integer long object sbyte short single string uinteger ulong ushort',
        literal: 'true false nothing'
      },
      illegal:
        '//|\\{|\\}|endif|gosub|variant|wend|^\\$ ' /* reserved deprecated keywords */,
      contains: [
        CHARACTER,
        STRING,
        DATE,
        NUMBER,
        LABEL,
        DOC_COMMENT,
        COMMENT,
        DIRECTIVES
      ]
    };
  }

  /*
  Language: WebAssembly
  Website: https://webassembly.org
  Description:  Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications.
  Category: web, common
  Audit: 2020
  */

  /** @type LanguageFn */
  function wasm(hljs) {
    hljs.regex;
    const BLOCK_COMMENT = hljs.COMMENT(/\(;/, /;\)/);
    BLOCK_COMMENT.contains.push("self");
    const LINE_COMMENT = hljs.COMMENT(/;;/, /$/);

    const KWS = [
      "anyfunc",
      "block",
      "br",
      "br_if",
      "br_table",
      "call",
      "call_indirect",
      "data",
      "drop",
      "elem",
      "else",
      "end",
      "export",
      "func",
      "global.get",
      "global.set",
      "local.get",
      "local.set",
      "local.tee",
      "get_global",
      "get_local",
      "global",
      "if",
      "import",
      "local",
      "loop",
      "memory",
      "memory.grow",
      "memory.size",
      "module",
      "mut",
      "nop",
      "offset",
      "param",
      "result",
      "return",
      "select",
      "set_global",
      "set_local",
      "start",
      "table",
      "tee_local",
      "then",
      "type",
      "unreachable"
    ];

    const FUNCTION_REFERENCE = {
      begin: [
        /(?:func|call|call_indirect)/,
        /\s+/,
        /\$[^\s)]+/
      ],
      className: {
        1: "keyword",
        3: "title.function"
      }
    };

    const ARGUMENT = {
      className: "variable",
      begin: /\$[\w_]+/
    };

    const PARENS = {
      match: /(\((?!;)|\))+/,
      className: "punctuation",
      relevance: 0
    };

    const NUMBER = {
      className: "number",
      relevance: 0,
      // borrowed from Prism, TODO: split out into variants
      match: /[+-]?\b(?:\d(?:_?\d)*(?:\.\d(?:_?\d)*)?(?:[eE][+-]?\d(?:_?\d)*)?|0x[\da-fA-F](?:_?[\da-fA-F])*(?:\.[\da-fA-F](?:_?[\da-fA-D])*)?(?:[pP][+-]?\d(?:_?\d)*)?)\b|\binf\b|\bnan(?::0x[\da-fA-F](?:_?[\da-fA-D])*)?\b/
    };

    const TYPE = {
      // look-ahead prevents us from gobbling up opcodes
      match: /(i32|i64|f32|f64)(?!\.)/,
      className: "type"
    };

    const MATH_OPERATIONS = {
      className: "keyword",
      // borrowed from Prism, TODO: split out into variants
      match: /\b(f32|f64|i32|i64)(?:\.(?:abs|add|and|ceil|clz|const|convert_[su]\/i(?:32|64)|copysign|ctz|demote\/f64|div(?:_[su])?|eqz?|extend_[su]\/i32|floor|ge(?:_[su])?|gt(?:_[su])?|le(?:_[su])?|load(?:(?:8|16|32)_[su])?|lt(?:_[su])?|max|min|mul|nearest|neg?|or|popcnt|promote\/f32|reinterpret\/[fi](?:32|64)|rem_[su]|rot[lr]|shl|shr_[su]|store(?:8|16|32)?|sqrt|sub|trunc(?:_[su]\/f(?:32|64))?|wrap\/i64|xor))\b/
    };

    const OFFSET_ALIGN = {
      match: [
        /(?:offset|align)/,
        /\s*/,
        /=/
      ],
      className: {
        1: "keyword",
        3: "operator"
      }
    };

    return {
      name: 'WebAssembly',
      keywords: {
        $pattern: /[\w.]+/,
        keyword: KWS
      },
      contains: [
        LINE_COMMENT,
        BLOCK_COMMENT,
        OFFSET_ALIGN,
        ARGUMENT,
        PARENS,
        FUNCTION_REFERENCE,
        hljs.QUOTE_STRING_MODE,
        TYPE,
        MATH_OPERATIONS,
        NUMBER
      ]
    };
  }

  /*
  Language: YAML
  Description: Yet Another Markdown Language
  Author: Stefan Wienert <stwienert@gmail.com>
  Contributors: Carl Baxter <carl@cbax.tech>
  Requires: ruby.js
  Website: https://yaml.org
  Category: common, config
  */
  function yaml(hljs) {
    const LITERALS = 'true false yes no null';

    // YAML spec allows non-reserved URI characters in tags.
    const URI_CHARACTERS = '[\\w#;/?:@&=+$,.~*\'()[\\]]+';

    // Define keys as starting with a word character
    // ...containing word chars, spaces, colons, forward-slashes, hyphens and periods
    // ...and ending with a colon followed immediately by a space, tab or newline.
    // The YAML spec allows for much more than this, but this covers most use-cases.
    const KEY = {
      className: 'attr',
      variants: [
        // added brackets support 
        { begin: /\w[\w :()\./-]*:(?=[ \t]|$)/ },
        { // double quoted keys - with brackets
          begin: /"\w[\w :()\./-]*":(?=[ \t]|$)/ },
        { // single quoted keys - with brackets
          begin: /'\w[\w :()\./-]*':(?=[ \t]|$)/ },
      ]
    };

    const TEMPLATE_VARIABLES = {
      className: 'template-variable',
      variants: [
        { // jinja templates Ansible
          begin: /\{\{/,
          end: /\}\}/
        },
        { // Ruby i18n
          begin: /%\{/,
          end: /\}/
        }
      ]
    };
    const STRING = {
      className: 'string',
      relevance: 0,
      variants: [
        {
          begin: /'/,
          end: /'/
        },
        {
          begin: /"/,
          end: /"/
        },
        { begin: /\S+/ }
      ],
      contains: [
        hljs.BACKSLASH_ESCAPE,
        TEMPLATE_VARIABLES
      ]
    };

    // Strings inside of value containers (objects) can't contain braces,
    // brackets, or commas
    const CONTAINER_STRING = hljs.inherit(STRING, { variants: [
      {
        begin: /'/,
        end: /'/
      },
      {
        begin: /"/,
        end: /"/
      },
      { begin: /[^\s,{}[\]]+/ }
    ] });

    const DATE_RE = '[0-9]{4}(-[0-9][0-9]){0,2}';
    const TIME_RE = '([Tt \\t][0-9][0-9]?(:[0-9][0-9]){2})?';
    const FRACTION_RE = '(\\.[0-9]*)?';
    const ZONE_RE = '([ \\t])*(Z|[-+][0-9][0-9]?(:[0-9][0-9])?)?';
    const TIMESTAMP = {
      className: 'number',
      begin: '\\b' + DATE_RE + TIME_RE + FRACTION_RE + ZONE_RE + '\\b'
    };

    const VALUE_CONTAINER = {
      end: ',',
      endsWithParent: true,
      excludeEnd: true,
      keywords: LITERALS,
      relevance: 0
    };
    const OBJECT = {
      begin: /\{/,
      end: /\}/,
      contains: [ VALUE_CONTAINER ],
      illegal: '\\n',
      relevance: 0
    };
    const ARRAY = {
      begin: '\\[',
      end: '\\]',
      contains: [ VALUE_CONTAINER ],
      illegal: '\\n',
      relevance: 0
    };

    const MODES = [
      KEY,
      {
        className: 'meta',
        begin: '^---\\s*$',
        relevance: 10
      },
      { // multi line string
        // Blocks start with a | or > followed by a newline
        //
        // Indentation of subsequent lines must be the same to
        // be considered part of the block
        className: 'string',
        begin: '[\\|>]([1-9]?[+-])?[ ]*\\n( +)[^ ][^\\n]*\\n(\\2[^\\n]+\\n?)*'
      },
      { // Ruby/Rails erb
        begin: '<%[%=-]?',
        end: '[%-]?%>',
        subLanguage: 'ruby',
        excludeBegin: true,
        excludeEnd: true,
        relevance: 0
      },
      { // named tags
        className: 'type',
        begin: '!\\w+!' + URI_CHARACTERS
      },
      // https://yaml.org/spec/1.2/spec.html#id2784064
      { // verbatim tags
        className: 'type',
        begin: '!<' + URI_CHARACTERS + ">"
      },
      { // primary tags
        className: 'type',
        begin: '!' + URI_CHARACTERS
      },
      { // secondary tags
        className: 'type',
        begin: '!!' + URI_CHARACTERS
      },
      { // fragment id &ref
        className: 'meta',
        begin: '&' + hljs.UNDERSCORE_IDENT_RE + '$'
      },
      { // fragment reference *ref
        className: 'meta',
        begin: '\\*' + hljs.UNDERSCORE_IDENT_RE + '$'
      },
      { // array listing
        className: 'bullet',
        // TODO: remove |$ hack when we have proper look-ahead support
        begin: '-(?=[ ]|$)',
        relevance: 0
      },
      hljs.HASH_COMMENT_MODE,
      {
        beginKeywords: LITERALS,
        keywords: { literal: LITERALS }
      },
      TIMESTAMP,
      // numbers are any valid C-style number that
      // sit isolated from other words
      {
        className: 'number',
        begin: hljs.C_NUMBER_RE + '\\b',
        relevance: 0
      },
      OBJECT,
      ARRAY,
      STRING
    ];

    const VALUE_MODES = [ ...MODES ];
    VALUE_MODES.pop();
    VALUE_MODES.push(CONTAINER_STRING);
    VALUE_CONTAINER.contains = VALUE_MODES;

    return {
      name: 'YAML',
      case_insensitive: true,
      aliases: [ 'yml' ],
      contains: MODES
    };
  }

  var builtIns = /*#__PURE__*/Object.freeze({
    __proto__: null,
    grmr_bash: bash,
    grmr_c: c,
    grmr_cpp: cpp,
    grmr_csharp: csharp,
    grmr_css: css,
    grmr_diff: diff,
    grmr_go: go,
    grmr_graphql: graphql,
    grmr_ini: ini,
    grmr_java: java,
    grmr_javascript: javascript,
    grmr_json: json,
    grmr_kotlin: kotlin,
    grmr_less: less,
    grmr_lua: lua,
    grmr_makefile: makefile,
    grmr_markdown: markdown,
    grmr_objectivec: objectivec,
    grmr_perl: perl,
    grmr_php: php,
    grmr_php_template: phpTemplate,
    grmr_plaintext: plaintext,
    grmr_python: python,
    grmr_python_repl: pythonRepl,
    grmr_r: r,
    grmr_ruby: ruby,
    grmr_rust: rust,
    grmr_scss: scss,
    grmr_shell: shell,
    grmr_sql: sql,
    grmr_swift: swift,
    grmr_typescript: typescript,
    grmr_vbnet: vbnet,
    grmr_wasm: wasm,
    grmr_xml: xml,
    grmr_yaml: yaml
  });

  const hljs = highlight;

  for (const key of Object.keys(builtIns)) {
    // our builtInLanguages Rollup plugin has to use `_` to allow identifiers to be
    // compatible with `export` naming conventions, so we need to convert the
    // identifiers back into the more typical dash style that we use for language
    // naming via the API
    const languageName = key.replace("grmr_", "").replace("_", "-");
    hljs.registerLanguage(languageName, builtIns[key]);
  }

  return hljs;

})();
if (typeof exports === 'object' && typeof module !== 'undefined') { module.exports = hljs; }