I do a really bad job as marketer

[Dmitry Olshansky]

See this is Jun 2012 post on perl group speaking of unicode support on 
development branch:
http://code.activestate.com/lists/perl5-porters/173477/
Now, keep in mind, that std.regex had O(1) trie lookup for these things 
from day one, because inversion lists with O(lnN) lookup  alone were too 
slow.

--
Dmitry Olshansky