X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Date: Wed, 20 Oct 2010 00:42:56 -0400 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: Sending signals to a subprocess Message-ID: <20101020044256.GC3382@ednor.casa.cgf.cx> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <4CB9DE15.8010308@cornell.edu> <4CB9E9C0.3000509@cornell.edu> <20101018183438.GA25878@ednor.casa.cgf.cx> <4CBCA2A5.4010601@cornell.edu> <20101018201805.GA26254@ednor.casa.cgf.cx> <4CBD9DF2.3090804@cornell.edu> <20101019141557.GA31784@ednor.casa.cgf.cx> <4CBE5F53.30402@cornell.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4CBE5F53.30402@cornell.edu> User-Agent: Mutt/1.5.20 (2009-06-14) Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On Tue, Oct 19, 2010 at 11:17:39PM -0400, Ken Brown wrote: >On 10/19/2010 10:15 AM, Christopher Faylor wrote: >I would like to create a STC that would let me investigate this further, >but I don't know enough programming to do it. It ought to be completely >trivial. Here's what happens: > >Emacs creates a subprocess that runs an interactive bash shell. Emacs >wants to get the PGID of the foreground process group associated to the >tty of this shell, and it does this on Linux via TIOCGPGRP (or equally >well tcgetpgrp). I think it uses the file descriptor of the master of >the pty for this purpose. If you (or some other programmer reading >this) could give me the code for setting all this up, I could play with >it and try to figure out why I'm seeing a difference between Linux and >Cygwin here. I just don't know how to create a subprocess, give it a >terminal, etc. I provided a simple text case here: http://cygwin.com/ml/cygwin/2010-10/msg00395.html cgf -- 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