class Regexp::Syntax::V1_9_1

def initialize
  super
  implements :assertion, Assertion::Lookbehind
  implements :backref, Backreference::All + SubexpressionCall::All
  implements :posixclass, PosixClass::Extensions
  implements :nonposixclass, PosixClass::All
  implements :escape, Escape::Unicode + Escape::Hex + Escape::Octal
  implements :type, CharacterType::Hex
  implements :property, UnicodeProperty::V1_9_0
  implements :nonproperty, UnicodeProperty::V1_9_0
  implements :quantifier,
    Quantifier::Possessive + Quantifier::IntervalPossessive
end