I think the answers lies into the source code :) Perhaps ')' doesn't work because of some obscure compatibility problem or... OK, I'll check perl source, promise !
update: I've quickly browsed thru perl code (toke.c especially) and I didn't find the clear difference... Well, I'll dig it deeper later.

In reply to Re^4: Perl Regular Expression inconsistency by wazoox
in thread Perl Regular Expression inconsistency by jkva

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