You're right. I edited rather than c&p :( and forgot my usual 1+. 

 next if 1+index $all, $x, $p;

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Code above amended.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^9: list of unique strings, also eliminating matching substrings by BrowserUk
in thread list of unique strings, also eliminating matching substrings by lindsay_grey

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