negative lookbehind only works with a fixed string. You cannot have variable-width negative lookbehind.

The immediate solution is to reverse your regex, converting a negative lookbehind into a positive lookahead. Regex::Reverse tricky test cases and sexeger are probably good starts on the process.

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In reply to Re: negative lookbehind question by dragonchild
in thread negative lookbehind question by shadowpuppet

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