From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: 'make-comint' question Date: Wed, 31 Jul 2013 10:44:24 -0400 Message-ID: References: <878v0not0a.fsf@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1375281933 28747 80.91.229.3 (31 Jul 2013 14:45:33 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 31 Jul 2013 14:45:33 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Jul 31 16:45:34 2013 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1V4Xeg-00077E-G3 for geh-help-gnu-emacs@m.gmane.org; Wed, 31 Jul 2013 16:45:34 +0200 Original-Received: from localhost ([::1]:49274 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V4Xeg-0007Qv-5s for geh-help-gnu-emacs@m.gmane.org; Wed, 31 Jul 2013 10:45:34 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35822) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V4XeO-0007Ef-9W for help-gnu-emacs@gnu.org; Wed, 31 Jul 2013 10:45:24 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V4XeE-00018x-N2 for help-gnu-emacs@gnu.org; Wed, 31 Jul 2013 10:45:16 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:59872) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V4XeE-00018f-H9 for help-gnu-emacs@gnu.org; Wed, 31 Jul 2013 10:45:06 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1V4XeB-0006mc-OT for help-gnu-emacs@gnu.org; Wed, 31 Jul 2013 16:45:03 +0200 Original-Received: from 69-165-155-237.dsl.teksavvy.com ([69.165.155.237]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 31 Jul 2013 16:45:03 +0200 Original-Received: from monnier by 69-165-155-237.dsl.teksavvy.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 31 Jul 2013 16:45:03 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 28 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 69-165-155-237.dsl.teksavvy.com User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) Cancel-Lock: sha1:ZvVXV8YFO4dqFOADpSnTSXuKBjw= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:92592 Archived-At: > I erase and save the buffer of an config-file for an external program > before applying 'make-comint on that program, and restore the file to > its old state afterwards: > #+begin_src emacs-lisp > [...] > (erase-config-file-for-external-process) > (set-buffer > (apply 'make-comint name (car cmd) nil (cdr cmd))) > (rename-buffer "buffer-name") > (restore-config-file-for-external-process) > [...] > #+end_src > When I edebug my code, it does exactly what it should, and the new > inferior subprocess starts without the (unnecessary) configurations > of the erased config file, as it should. > However, when I simply run my code without debugging, the new > inferior subprocess starts _with_ the (unnecessary) configurations, > what seems quite strange to me. The code after `make-comint' is run concurrently with your external process, so you have a race-condition: if Emacs is quick enough it will restore the config file before the process gets to read it. Stefan