Here's a prime application of sexeger. 
$rev_regex = regex2 qr{maet(?!\W+(\w+\W+){0,5}tnemeganam)};

[download]
Now execute it as such: 
$results = $rev_regex->(scalar reverse $string);

[download]


japhy -- Perl and Regex Hacker

In reply to Re: Implementing variable-width negative lookbehind assertions? by japhy
in thread Implementing variable-width negative lookbehind assertions? by ToasterLeavings

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