http://www.perlmonks.org?node_id=38227


in reply to (Ovid) Re: Regular Expression matching question
in thread Regular Expression matching question

Weeeeell, kinda. A DFA engine in general can't do backreferences, so he wouldn't have been able to test the $1 thing to begin with...

You're right about the POSIX NFA, though. Of course, no one would use Perl RExen if they were POSIX NFAs, as they'd be too slow. But you knew that :-).

-dlc