I'm by no means an expert, but I'd say that the inner languages don't need to have any idea of closure or of curly braces; those are Perl's responsibility.
Rather it's the rules parser's responsibility. Don't forget, more languages than just perl 6 are going to be using the new rules parser.
--
Dan
--------------------------------------it's like this------------------- Dan Sugalski even samurai [EMAIL PROTECTED] have teddy bears and even teddy bears get drunk