Prism.languages.properties = {
  comment: /^[ \t]*[#!].*$/m,
  'attr-value': {
    pattern:
      /(^[ \t]*(?:\\(?:\r\n|[\s\S])|[^\\\s:=])+(?: *[=:] *(?! )| ))(?:\\(?:\r\n|[\s\S])|[^\\\r\n])+/m,
    lookbehind: true,
  },
  'attr-name': /^[ \t]*(?:\\(?:\r\n|[\s\S])|[^\\\s:=])+(?= *[=:]| )/m,
  punctuation: /[=:]/,
};