Prism.languages.arff = {
  comment: /%.*/,
  string: {
    pattern: /(["'])(?:\\.|(?!\1)[^\\\r\n])*\1/,
    greedy: true,
  },
  keyword: /@(?:attribute|data|end|relation)\b/i,
  number: /\b\d+(?:\.\d+)?\b/,
  punctuation: /[{},]/,
};