code: function(hljs) {
    var VARIABLE = {
      className: 'variable',
      begin: /\$\(/, end: /\)/,
      contains: [hljs.BACKSLASH_ESCAPE]
    };
    return {
      aliases: ['mk', 'mak'],
      contains: [
        hljs.HASH_COMMENT_MODE,
        {
          begin: /^\w+\s*\W*=/, returnBegin: true,
          relevance: 0,
          starts: {
            className: 'constant',
            end: /\s*\W*=/, excludeEnd: true,
            starts: {
              end: /$/,
              relevance: 0,
              contains: [
                VARIABLE
              ]
            }
          }
        },
        {
          className: 'title',
          begin: /^[\w]+:\s*$/
        },
        {
          className: 'phony',
          begin: /^\.PHONY:/, end: /$/,
          keywords: '.PHONY', lexemes: /[\.\w]+/
        },
        {
          begin: /^\t+/, end: /$/,
          contains: [
            hljs.QUOTE_STRING_MODE,
            VARIABLE
          ]
        }
      ]
    };
  }
docs: /*
  Language: Makefile
  Author: Ivan Sagalaev <maniac@softwaremaniacs.org>