As Ola reported earlier today, we've merged Joni, Marcin Mielczynski's port of Oniguruma, to JRuby trunk. Here's the description from the Oniguruma home page: Oniguruma is a regular expressions library. The characteristics of this library is that different character encoding for every regular expression object can be specified.The benefit for us is avoiding the encode/decode we previously had to d