Update: with regard to It's probably faster to use 2 regexps too: Yes, a quick Benchmarking shows that, with anchoring, the double-regex style runs about 50% faster than the single-regex solution I posted. (Perhaps one of the resident RegEx gurus can explain why this is?)

Generally anything that looks like "(AB*)*" is bad for the backtracking.

--
James Antill

In reply to Re: Re: Re: Re: Regular Expression Question by nevyn
in thread Regular Expression Question by TASdvlper

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