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Just to add a small diagnosis from symptoms without looking at the source code, the problem seems to be * specific, as fixed-width REs work (at least with 5.6.1), like :

print $1 if 'abcfoobc' =~ /(.*)foo\1/; # works print $1 if 'abcfoobc' =~ /(.*).{3}\1/; # does work, $1 empty print $1 if 'abcfoobc' =~ /(.+)foo\1/; # works as well

Update: Thanks to chipmunk, I figured out that I was dumb. The following RE also matches :

print $1 if 'abcfoobc' =~ /(.*)\w*\1/; # does work

perl -MHTTP::Daemon -MHTTP::Response -MLWP::Simple -e ' ; # The $d = new HTTP::Daemon and fork and getprint $d->url and exit;#spider ($c = $d->accept())->get_request(); $c->send_response( new #in the HTTP::Response(200,$_,$_,qq(Just another Perl hacker\n))); ' # web

In reply to Re: Quirky regex bug by Corion
in thread Quirky regex bug by japhy

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