What regex library are you using? That's the defining factor --the parser.
Just like xml parsers are different so are regex libs/utilities.

On Tue, 9 Jul 2002, Cornillon, Matthieu wrote:

> Does anyone have anything concrete to say about the speed of searching using
> regular expressions?  Are giant RegExes a mistake?  I am hardly seeing any
> performance hit at all right now with mine, which is quite big.  Of course,
> I am not live with piles of simultaneous users, either.  Am I going to hit
> trouble?  Does anyone have any feedback on optimization of RegExes (i.e., is
> on(click|mouseup|mousedown) much different from
> onclick|onmousedown|onmouseup from on(click|(mouse(up|down)))?
>
> TIA,
> Matthieu
> 
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