Now is an exciting time to follow Ruby's development. With the next major version of Ruby in active development, there has never been a better time to get involved. If you are interested in helping improve Ruby, here's a few places to start.
Reporting Issues
Use the Ruby Issue Tracking System to report bugs against Ruby. Before filing a bug, make sure to search and see if the issue has already been reported.
The Source Code
Ruby's source code is maintained in a Subversion repository. You can also browse the source using ViewVC.
To check out the current stable branch:
$ svn co http://svn.ruby-online.co.uk/repos/ruby/branches/ruby_1_8To check out the current development trunk:
$ svn co http://svn.ruby-online.co.uk/repos/ruby/trunk rubyThe Ruby-Core Mailing List
The Ruby-Core mailing list is the right place to post patches and discuss whether a bug is worth fixing. Keep in mind that purely social chats should be redirected to Ruby-Talk.