How can I match a string which contains "weird" but does not have "odd" somewhere in the string before it? I have tried negative lookbehind as shown below with no success. The example only works if "odd" immediately precedes "weird". 
my $str = "odd an very weird receiver";

if ($str =~ /(?<!odd)weird/)
{
    print "hit";
}

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Many Thanks!

In reply to negative lookbehind heartburn by amazotron

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