greg is a re-entrant leg, with some bug fixes and enhancements.
<http://piumarta.com/software/peg/>
This version is equivalent to leg from peg-0.1.13.

greg derived from potion <http://github.com/perl11/potion>,
is used as perl5 and perl6 parser in <http://github.com/perl11/p2>.
And in nagaqueen, an ooc grammar <http://github.com/nddrylliog/nagaqueen>,
used in rock, an ooc compiler written in ooc <http://github.com/nddrylliog/rock>.

peg/leg is copyright (c) 2007 by Ian Piumarta
released under an MIT license. as is greg.
