That's a tough thing to specify. You have to "inchworm": 
my $str = "...";
if ($str =~ /^(?:(?!odd).)*weird/s) {
  # we found "weird" without looking at odd
}

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-- Randal L. Schwartz, Perl hacker

In reply to •Re: negative lookbehind heartburn by merlyn
in thread negative lookbehind heartburn by amazotron

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