if (! this.sh_languages) {
  this.sh_languages = {};
}
sh_languages['prolog'] = [
  [
    [
      /\b(?:bgidriver|bgifont|check_determ|code|config|diagnostics|error|errorlevel|heap|gstacksize|nobreak|nowarnings|printermenu|project)\b/g,
      'sh_preproc',
      -1
    ],
    [
      /%/g,
      'sh_comment',
      1
    ],
    [
      /\b[+-]?(?:(?:0x[A-Fa-f0-9]+)|(?:(?:[\d]*\.)?[\d]+(?:[eE][+-]?[\d]+)?))u?(?:(?:int(?:8|16|32|64))|L)?\b/g,
      'sh_number',
      -1
    ],
    [
      /"/g,
      'sh_string',
      2
    ],
    [
      /'/g,
      'sh_string',
      3
    ],
    [
      /\b(?:abstract|align|as|and|class|clauses|constants|database|determ|domains|elsedef|endclass|enddef|erroneous|facts|failure|global|goal|if|ifdef|ifndef|implement|include|language|multi|nocopy|nondeterm|object|or|procedure|protected|predicates|reference|single|static|struct|this|ABSTRACT|ALIGN|AS|AND|CLASS|CLAUSES|CONSTANTS|DATABASE|DETERM|DOMAINS|ELSEDEF|ENDCLASS|ENDDEF|ERRONEOUS|FACTS|FAILURE|GLOBAL|GOAL|IF|IFDEF|IFNDEF|IMPLEMENT|INCLUDE|LANGUAGE|MULTI|NOCOPY|NONDETERM|OBJECT|OR|PROCEDURE|PROTECTED|PREDICATES|REFERENCE|SINGLE|STATIC|STRUCT|THIS|assert|asserta|assertz|bound|chain_inserta|chain_insertafter|chain_insertz|chain_terms|consult|db_btrees|db_chains|fail|findall|format|free|msgrecv|msgsend|nl|not|readterm|ref_term|retract|retractall|save|term_bin|term_replace|term_str|trap|write|writef|mod|div|abs|exp|ln|log|sqrt|round|trunc|val|cos|sin|tan|arctan|random|randominit)\b/g,
      'sh_keyword',
      -1
    ],
    [
      /\/\*/g,
      'sh_comment',
      4
    ],
    [
      /\b(?:char|real|string|symbol|byte|sbyte|short|ushort|word|integer|unsigned|dword|long|ulong|binary|ref)\b/g,
      'sh_type',
      -1
    ],
    [
      /~|!|%|\^|\*|\(|\)|-|\+|=|\[|\]|\\|:|;|,|\.|\/|\?|&|<|>|\|/g,
      'sh_symbol',
      -1
    ],
    [
      /\{|\}/g,
      'sh_cbracket',
      -1
    ],
    [
      /(?:[A-Za-z]|_)[A-Za-z0-9_]*(?=[ \t]*\()/g,
      'sh_function',
      -1
    ],
    [
      /[A-Z][A-Za-z0-9_]*|_/g,
      'sh_variable',
      -1
    ]
  ],
  [
    [
      /$/g,
      null,
      -2
    ]
  ],
  [
    [
      /$/g,
      null,
      -2
    ],
    [
      /\\(?:\\|")/g,
      null,
      -1
    ],
    [
      /"/g,
      'sh_string',
      -2
    ]
  ],
  [
    [
      /$/g,
      null,
      -2
    ],
    [
      /\\(?:\\|')/g,
      null,
      -1
    ],
    [
      /'/g,
      'sh_string',
      -2
    ]
  ],
  [
    [
      /\*\//g,
      'sh_comment',
      -2
    ],
    [
      /\/\*/g,
      'sh_comment',
      4
    ]
  ]
];
