Well, I would be using it already if jcwren had it on perlmonk.org, but GHC eats memory like it's candy. So until I have my own place to put it (which might mean installing it on my WinXP laptop) I'll have to pretend.

<plug type="shameless">But that doesn't stop me from writing Perl6::Rule::Parser, a subclass/extension of Regexp::Parser!</plug>