How trivial is it to add a ?<{ } block that is executed with the
same semantics as ?{ }, except that instead of running when the
engine matches over it, it gets run as the engine backtracks over
it?
my $thing = qr/
?{ do_something() }
?<{ undo_it() }
$try_this_pattern
/x;
if $try_this_pattern fails, undo_it() is called to undo
do_something().
--
() Yuval Kogman <[EMAIL PROTECTED]> 0xEBD27418 perl hacker &
/\ kung foo master: /me sneaks up from another MIME part: neeyah!!!!!
pgpk19QbPRmXW.pgp
Description: PGP signature
