From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@quanstro.net>
Date: Tue,  5 Jul 2011 08:13:58 -0400
To: 9fans@9fans.net
Message-ID: <6f23779eaf1a84b58aa569a370e413cb@ladd.quanstro.net>
In-Reply-To: <201107050956.18175.dexen.devries@gmail.com>
References: <201107050956.18175.dexen.devries@gmail.com>
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Subject: Re: [9fans] grep (or perhaps regex(6)) question
Topicbox-Message-UUID: fab52578-ead6-11e9-9d60-3106f5b1d025

On Tue Jul  5 03:57:02 EDT 2011, dexen.devries@gmail.com wrote:
> on plan9port:
> % echo foobar | 9 grep '$JUNK'
>  -> foobar
>
> that is, p9p grep matches any line with regular expression in form of
> $ANY_REGEX
>
> why is it so?

this is a bug.  see the grammar in regexp(6).
plan 9 grep does not have this problem.

- erik