Parrot - це віртуальна машина для різних мов програмування (в першу чергу - Perl6).
Нові можливості Parrot 0.4:
- New lexical handling and closure support including better introspection for caller and outer
- PGE (Parrot Grammar Engine) provides now compilers for P6Rule, P6Grammar, P5Regexp, and Glob
- ca. 1000 new tests including 800 for Perl5 regexp
- Improved unicode charset and encoding support
- Calling conventions for exception handlers
- Punie (Perl 1) uses TGE (Tree Grammar Engine) to convert from PGE match objects to AST via two steps of tree transformation grammars
- New languages: amber and lua
- The usual code fixes, cleanup, and improvements, including an overhaul of the config and test framework
http://use.perl.org/article.pl?sid=05/12/05/1536259