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Date: Mon, 18 Oct 2010 13:27:58 -0400
From: Ken Brown <kbrown AT cornell DOT edu>
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To: cygwin AT cygwin DOT com
Subject: Re: Sending signals to a subprocess
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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

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