Hello,

In message "Ruby in Ruby"
    on 03/07/28, Austin Ziegler <austin / halostatue.ca> writes:

|Over on the pragprog list, Ron Jeffries suggested that it might be
|interesting to implement Ruby in Ruby. I thought -- but could not find
|quickly -- that someone had started such a project.

It's Ryan Davis aka zenspider.  You can also google for "MetaRuby".

							matz.