X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-1.0 required=5.0 tests=AWL,BAYES_00,SPF_NEUTRAL,T_RP_MATCHES_RCVD
X-Spam-Check-By:	sourceware.org
Message-ID:	<4CBC839E.9040707@cornell.edu>
Date:	Mon, 18 Oct 2010 13:27:58 -0400
From:	Ken Brown <kbrown AT cornell DOT edu>
User-Agent:	Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.9) Gecko/20100915 Thunderbird/3.1.4
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: Sending signals to a subprocess
References:	<4CB9DE15 DOT 8010308 AT cornell DOT edu> <4CB9E9C0 DOT 3000509 AT cornell DOT edu> <20101018145856 DOT GA14608 AT ednor DOT casa DOT cgf DOT cx>
In-Reply-To:	<20101018145856.GA14608@ednor.casa.cgf.cx>
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

On 10/18/2010 10:58 AM, Christopher Faylor wrote:
> On Sat, Oct 16, 2010 at 02:06:56PM -0400, Ken Brown wrote:
>> On 10/16/2010 1:17 PM, Ken Brown wrote:
>>> I could use some help fixing a longstanding bug in the Cygwin build of
>>> emacs, in which emacs is unable to send signals to subprocesses.  A
>>> symptom from the user's point of view is that one cannot interrupt a
>>> process in shell mode by typing C-c C-c.  I've found a workaround that
>>> handles that case (SIGINT), as well as SIGQUIT and SIGTSTP.  But as long
>>> as I'm fixing this, I'd like to do it right and figure out how to handle
>>> all signals.
>>>
>>> This boils down to finding the right process group ID to pass to 'kill'.
>>> On systems that have TIOCGPGRP, emacs uses the following code (in
>>> src/process.c) to get this ID:
>
> If it helps, I can implement TIOCGPGRP so it will be available in Cygwin
> 1.7.9.

Yes, that would be great.  Thanks.

Ken

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -