From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Chong Yidong Newsgroups: gmane.emacs.bugs Subject: bug#2930: 23.0.92; `accept-process-output' and `sleep-for' do not run sentinels Date: Sat, 15 Aug 2009 21:58:11 -0400 Message-ID: <87eircjz9o.fsf@cyd.mit.edu> Reply-To: Chong Yidong , 2930@emacsbugs.donarmstrong.com NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1250388430 7932 80.91.229.12 (16 Aug 2009 02:07:10 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 16 Aug 2009 02:07:10 +0000 (UTC) Cc: 2930@emacsbugs.donarmstrong.com, Markus Triska To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Aug 16 04:07:03 2009 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1McV9C-0005nl-Lh for geb-bug-gnu-emacs@m.gmane.org; Sun, 16 Aug 2009 04:07:02 +0200 Original-Received: from localhost ([127.0.0.1]:52613 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1McV9C-0000qd-50 for geb-bug-gnu-emacs@m.gmane.org; Sat, 15 Aug 2009 22:07:02 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1McV97-0000qU-Pf for bug-gnu-emacs@gnu.org; Sat, 15 Aug 2009 22:06:57 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1McV93-0000q5-LB for bug-gnu-emacs@gnu.org; Sat, 15 Aug 2009 22:06:57 -0400 Original-Received: from [199.232.76.173] (port=56808 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1McV93-0000px-Db for bug-gnu-emacs@gnu.org; Sat, 15 Aug 2009 22:06:53 -0400 Original-Received: from rzlab.ucr.edu ([138.23.92.77]:55720) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1McV92-0005U8-Q2 for bug-gnu-emacs@gnu.org; Sat, 15 Aug 2009 22:06:53 -0400 Original-Received: from rzlab.ucr.edu (rzlab.ucr.edu [127.0.0.1]) by rzlab.ucr.edu (8.14.3/8.14.3/Debian-5) with ESMTP id n7G26nIw002678; Sat, 15 Aug 2009 19:06:49 -0700 Original-Received: (from debbugs@localhost) by rzlab.ucr.edu (8.14.3/8.14.3/Submit) id n7G2547r001819; Sat, 15 Aug 2009 19:05:04 -0700 X-Loop: owner@emacsbugs.donarmstrong.com Resent-From: Chong Yidong Resent-To: bug-submit-list@donarmstrong.com Resent-CC: Emacs Bugs Resent-Date: Sun, 16 Aug 2009 02:05:04 +0000 Resent-Message-ID: Resent-Sender: owner@emacsbugs.donarmstrong.com X-Emacs-PR-Message: followup 2930 X-Emacs-PR-Package: emacs X-Emacs-PR-Keywords: Original-Received: via spool by 2930-submit@emacsbugs.donarmstrong.com id=B2930.1250387834347 (code B ref 2930); Sun, 16 Aug 2009 02:05:04 +0000 Original-Received: (at 2930) by emacsbugs.donarmstrong.com; 16 Aug 2009 01:57:14 +0000 X-Spam-Bayes: score:0.5 Bayes not run. spammytokens:Tokens not available. hammytokens:Tokens not available. Original-Received: from cyd.mit.edu (CYD.MIT.EDU [18.115.2.24]) by rzlab.ucr.edu (8.14.3/8.14.3/Debian-5) with ESMTP id n7G1vCEf000344 for <2930@emacsbugs.donarmstrong.com>; Sat, 15 Aug 2009 18:57:13 -0700 Original-Received: by cyd.mit.edu (Postfix, from userid 1000) id 664BD57E21C; Sat, 15 Aug 2009 21:58:11 -0400 (EDT) X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 2) Resent-Date: Sat, 15 Aug 2009 22:06:57 -0400 X-BeenThere: bug-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:30258 Archived-At: > The documentation for sentinels states: > > A program can wait, so that sentinels will run, by calling > `sit-for' or `sleep-for' (...), or `accept-process-output' (...). > > However, when I do M-x eval-region RET on the following forms in > "emacs -Q", then Emacs loops unexpectedly: > > (defun my-sentinel (proc str) > (setq my-finished t)) > > (let ((p (start-process "bc" nil "bc")) > my-finished) > (set-process-sentinel p 'my-sentinel) > (process-send-string p "quit\n") > (while (not my-finished) > (accept-process-output nil 0.1))) The trouble is that accept-process-output passes a zero DO_DISPLAY argument to wait_reading_process_output (process.c:4306). When DO_DISPLAY is zero, status notifications are not performed (process.c:4763). Having accept-process-output pass a non-zero DO_DISPLAY argument to wait_reading_process_output fixes this problem, but I don't know what ramifications this would have. Stefan, WDYT?