note pileofrogs <p>Woah!</p> <p>That works. I expected it would fail because the first group would match everything and then there would be nothing for the 2nd group to match against.</p> <p>Here's the code I used to test:</p> <code> #! /usr/bin/perl -w -T use strict; my $str = 'foo_bar_foo_bar_12345'; print "$str\n"; $str =~ /(.*)(\1.*)/ || die "Failed!\n"; print "$2\n"; </code> <p>Can anyone explaine why that is?</p> 985249 985255