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Date: Tue, 21 Aug 2007 11:36:04 -0500
From: Ray Morris <support@bettercgi.com>
Subject: Re: Regex Help with Mod Rewrite
To: modules-dev@httpd.apache.org
References: <d74f67270708210904m5e8281b4l19a12c763fdc54a1@mail.gmail.com>
In-Reply-To: <d74f67270708210904m5e8281b4l19a12c763fdc54a1@mail.gmail.com>
	(from soumya.sanyal@gmail.com on Tue Aug 21 11:04:58 2007)
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RewriteCond %{QUERY_STRING} ^(rain|spain|plain|,)+$

For a full explanation of what regex features are
and are not available, see the first result:
http://www.google.com/search?q=3Dmod_rewrite&sourceid=3Dmozilla&start=3D0&s=
tart=3D0&ie=3Dutf-8&oe=3Dutf-8

--
Ray B. Morris
support@bettercgi.com

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On 08/21/2007 11:04:58 AM, Soumya Sanyal wrote:
> Hello,
>  This might not be the most appropriate forum to field this question -
> but
> I'm having serious issues with the formulation of a regex for Mod
> Rewrite. I
> actually have a couple of questions to ask :
>=20
> 1> What is particular flavor of the regex engine being used by Mod
> Rewrite -
> there are ever so slight variations in the different regex engines,
> e.g.
> linux grep vs perl grep etc.
> 2> I'm having trouble formulating a good compact regex to represent
> the
> following problem :
>=20
> I want my RewriteCond to be conditioned on the %{QUERY_STRING} to
> contain
> only the powerset of a group of words e.g.
>=20
> Hence if my set is say {rain,spain,plain}
>=20
> The RewriteCond should say yes to the following :
> http://foo.bar.com/?Operation=3Drain,spain
> http://foo.bar.com/?Operation=3Dplain,rain,rain
> http://foo.bar.com/?Operation=3Dplain,rain,spain
>=20
> But not :
> http://foo.bar.com/?Operation=3Drain,spain,mainly
>=20
> Help please ?
>=20