From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-workers-request@math.gatech.edu>
Received: (qmail 26406 invoked from network); 3 May 1998 01:41:28 -0000
Received: from math.gatech.edu (list@130.207.146.50)
  by ns1.primenet.com.au with SMTP; 3 May 1998 01:41:28 -0000
Received: (from list@localhost)
	by math.gatech.edu (8.8.5/8.8.5) id VAA04337;
	Sat, 2 May 1998 21:38:26 -0400 (EDT)
Resent-Date: Sat, 2 May 1998 21:38:16 -0400 (EDT)
Message-Id: <199805030138.VAA26176@luomat.peak.org>
Content-Type: text/plain
MIME-Version: 1.0
In-Reply-To: <199805022224.QAA03113@ipecac.Central.Sun.COM>
From: Timothy J Luoma <luomat+Lists/Zsh/users@luomat.peak.org>
Date: Sat,  2 May 98 21:38:27 -0400
To: talley@boulder.Central.Sun.COM (Steve Talley)
Subject: Re: exit value of intermediate program in pipe
cc: zsh-users@math.gatech.edu
References: <199805022224.QAA03113@ipecac.Central.Sun.COM>
Resent-Message-ID: <"o2MKA.0.131.7gyIr"@math>
Resent-From: zsh-users@math.gatech.edu
X-Mailing-List: <zsh-users@math.gatech.edu> archive/latest/1498
X-Loop: zsh-users@math.gatech.edu
X-Loop: zsh-workers@math.gatech.edu
Precedence: list
Resent-Sender: zsh-workers-request@math.gatech.edu

	Author:        talley@boulder.Central.Sun.COM (Steve Talley)
	Original-Date: Sat, 2 May 1998 16:24:40 -0600
	Message-ID:    <199805022224.QAA03113@ipecac.Central.Sun.COM>

> foo () {
> /bin/blah | grep -v "foo"
> }
>
> I would like this function to exit with the exit value from the
> /bin/blah process, but it exits with the exit value from grep instead.
>
> Is there any way to do this?

Do you ming a tempfile ?

foo () {
	tmp=/tmp/$0.$USER.$$

	/bin/blah > $tmp 2>&1
	exit="$?"
	
	grep -v foo $tmp && /bin/rm -f $tmp
	
	exit $exit

}

You don't have to use /tmp as the tempdir if you have security concerns..  
$HOME would work just as well.

TjL

ps -- if you use this function in your shell, doesn't it kill the shell ?