Friedrich Dominicus wrote:
> Of course I may have overreadi, but at least I can not remember having
> read about ruby used in
> - customized language development (e.g business logic)

Maybe we're not talking about the same thing, but I thought
Rich Kilmer gave a talk on this very subject at Ruby Conf '04.

We use Ruby in our project to create a domain specific language.

Regards,
-- 
Bil Kleb, Hampton, Virginia
http://fun3d.larc.nasa.gov