(function (Prism) {
  Prism.languages.etlua = {
    delimiter: {
      pattern: /^<%[-=]?|-?%>$/,
      alias: 'punctuation',
    },
    'language-lua': {
      pattern: /[\s\S]+/,
      inside: Prism.languages.lua,
    },
  };

  Prism.hooks.add('before-tokenize', function (env) {
    var pattern = /<%[\s\S]+?%>/g;
    Prism.languages['markup-templating'].buildPlaceholders(
      env,
      'etlua',
      pattern
    );
  });

  Prism.hooks.add('after-tokenize', function (env) {
    Prism.languages['markup-templating'].tokenizePlaceholders(env, 'etlua');
  });
})(Prism);