/^(?!cat)\s+dog/

This is called "A zero-width negative lookahead assertion." ... See why so many people like Perl for obfuscation :)

Ref: perl.com 

--
-- GhodMode
Blessed is he who has found his work; let him ask no other blessedness.
-- Thomas Carlyle

In reply to Re: Regex negative word by GhodMode
in thread Regex negative word by zer

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