From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Fri, 23 Feb 2007 00:17:43 +0100
From: Alberto =?iso-8859-1?Q?Cort=E9s?= <alcortes@it.uc3m.es>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] regular expressions in plan9 different from the ones in
	unix? (at least linux)
Message-ID: <20070222231743.GA27161@wolf.gast.it.uc3m.es>
References: <20070222221625.GQ8206@vanheusden.com>
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Folkert van Heusden said:

> Hi,
>=20
> A user of a program of mine (http://www.vanheusden.com/multitail/) trie=
s
> to use plan9 regexps under linux and doesn't succeed.
> Am I right that plan9 regular expressions are not compatible with the
> ones of "regular" unix?

They are different. I am not very sure what you mean by "regular"
UNIX regexp, as far as I now in Linux each command seems to use
different sets of regexps.

As for plan9, you can read regexp(6) at:

    http://plan9.bell-labs.com/magic/man2html/6/regexp

Sam also support structural regexps:

    http://plan9.bell-labs.com/sources/contrib/uriel/mirror/se.pdf


--=20
Alberto Cort=E9s