Looking for recommandations for Ruby parsing packages

[Kenneth McDonald]

I have need to build a parser, and was wondering if people could tell
me what they think are good Ruby packages for doing so. Treetop sounds
good, anything else?

Thanks,
Ken

 

[Ryan Davis]

I have need to build a parser, and was wondering if people could
tell me what they think are good Ruby packages for doing so. Treetop
sounds good, anything else?

what are your requirements for such a package?