From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from euclid.skiles.gatech.edu (list@euclid.skiles.gatech.edu [130.207.146.50]) by melb.werple.net.au (8.7.5/8.7.3) with ESMTP id PAA03368 for <mason@werple.mira.net.au>; Sat, 13 Apr 1996 15:01:59 +1000 (EST)
Received: (from list@localhost) by euclid.skiles.gatech.edu (8.7.3/8.7.3) id AAA02256; Sat, 13 Apr 1996 00:45:11 -0400 (EDT)
Resent-Date: Sat, 13 Apr 1996 00:45:11 -0400 (EDT)
Message-Id: <199604130443.AAA21733@redwood.skiles.gatech.edu>
X-Mailer: exmh version 1.6.6 3/24/96
To: zsh-workers@math.gatech.edu
Subject: need info about attachtty hanging
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Sat, 13 Apr 1996 00:43:29 -0400
From: "Richard J. Coleman" <coleman@math.gatech.edu>
Resent-Message-ID: <"mALyE3.0.AZ.M5pRn"@euclid>
Resent-From: zsh-workers@math.gatech.edu
X-Mailing-List: <zsh-workers@math.gatech.edu> archive/latest/923
X-Loop: zsh-workers@math.gatech.edu
Precedence: list
Resent-Sender: zsh-workers-request@math.gatech.edu

Several people have report zsh hanging in attachtty.  Peter
sent in a patch that changes

if (kill(pgrp, 0) == -1)

to

if (pgrp != mypgrp && kill(pgrp, 0) == -1)

Now I'm trying to understand what is going on.

1) Where is attachtty being called from when it
   hanges (init_io, init_signals, etc...)?

2) Does anyone know why the original call to set the
   foreground process is failing?

rc