[jruby-dev] Rails 4 and racc gem

[Rodrigo Rosenfeld Rosas]

It seems Rails 4 router parser is depending on racc gem which does not 
work with JRuby:

https://github.com/rails/journey/commit/6d462f2003297ad6d5dba940fed0f123549e36e2#commitcomment-1618473
Would you have any recommendation on how to support JRuby in Rails 4?