Re: Sending signals to a subprocess

[Christopher Faylor <cgf-use-the-mailinglist-please at cygwin dot com>]

On Mon, Oct 18, 2010 at 06:40:19PM +0100, Andy Koppe wrote:
>On 18 October 2010 18:27, Ken Brown wrote:
>> 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.
>
>I'd put that to use in mintty too, to improve support for relative
>paths when opening a file with Ctrl+click or the 'Open' menu command.

Ok, that's even more incentive for me to do this.  It's been on my todo
list for years.  I'll try to get to it soon.

(But now that I said this, I'll probably soon discover why it hasn't been
implemented already)

cgf

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