Prism.languages.parigp = {
  comment: /\/\*[\s\S]*?\*\/|\\\\.*/,
  string: {
    pattern: /"(?:[^"\\\r\n]|\\.)*"/,
    greedy: true,
  },
  // PARI/GP does not care about white spaces at all
  // so let's process the keywords to build an appropriate regexp
  // (e.g. "b *r *e *a *k", etc.)
  keyword: (function () {
    var keywords = [
      'breakpoint',
      'break',
      'dbg_down',
      'dbg_err',
      'dbg_up',
      'dbg_x',
      'forcomposite',
      'fordiv',
      'forell',
      'forpart',
      'forprime',
      'forstep',
      'forsubgroup',
      'forvec',
      'for',
      'iferr',
      'if',
      'local',
      'my',
      'next',
      'return',
      'until',
      'while',
    ];
    keywords = keywords
      .map(function (keyword) {
        return keyword.split('').join(' *');
      })
      .join('|');
    return RegExp('\\b(?:' + keywords + ')\\b');
  })(),
  function: /\b\w(?:[\w ]*\w)?(?= *\()/,
  number: {
    // The lookbehind and the negative lookahead prevent from breaking the .. operator
    pattern:
      /((?:\. *\. *)?)(?:\b\d(?: *\d)*(?: *(?!\. *\.)\.(?: *\d)*)?|\. *\d(?: *\d)*)(?: *e *(?:[+-] *)?\d(?: *\d)*)?/i,
    lookbehind: true,
  },
  operator:
    /\. *\.|[*\/!](?: *=)?|%(?: *=|(?: *#)?(?: *')*)?|\+(?: *[+=])?|-(?: *[-=>])?|<(?: *>|(?: *<)?(?: *=)?)?|>(?: *>)?(?: *=)?|=(?: *=){0,2}|\\(?: *\/)?(?: *=)?|&(?: *&)?|\| *\||['#~^]/,
  punctuation: /[\[\]{}().,:;|]/,
};