I think your negative look-ahead needs to be something like (?!.*,v$) because you don't know where the user-supplied regex is going to leave off matching. I agree with Fletch, however, as the optimisation game is probably not worth the candle.

Cheers,

JohnGG

In reply to Re^2: RegEx - match pattern not followed by literal by johngg
in thread RegEx - match pattern not followed by literal by Melly

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