!(function (a) {
  (a.languages.etlua = {
    delimiter: { pattern: /^<%[-=]?|-?%>$/, alias: 'punctuation' },
    'language-lua': { pattern: /[\s\S]+/, inside: a.languages.lua },
  }),
    a.hooks.add('before-tokenize', function (e) {
      a.languages['markup-templating'].buildPlaceholders(
        e,
        'etlua',
        /<%[\s\S]+?%>/g
      );
    }),
    a.hooks.add('after-tokenize', function (e) {
      a.languages['markup-templating'].tokenizePlaceholders(e, 'etlua');
    });
})(Prism);