From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#22622: 24.5; ask-user-about-supersession-threat causes emacs -batch to hang Date: Sat, 13 Feb 2016 15:42:55 +0200 Message-ID: <83pow0680w.fsf@gnu.org> References: Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1455371064 15688 80.91.229.3 (13 Feb 2016 13:44:24 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 13 Feb 2016 13:44:24 +0000 (UTC) Cc: 22622@debbugs.gnu.org To: Richard Sharman Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Feb 13 14:44:13 2016 Return-path: Envelope-to: geb-bug-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 1aUaUe-0006ek-4h for geb-bug-gnu-emacs@m.gmane.org; Sat, 13 Feb 2016 14:44:12 +0100 Original-Received: from localhost ([::1]:42205 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aUaUd-0001ll-7n for geb-bug-gnu-emacs@m.gmane.org; Sat, 13 Feb 2016 08:44:11 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51593) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aUaUY-0001iY-16 for bug-gnu-emacs@gnu.org; Sat, 13 Feb 2016 08:44:08 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aUaUU-0006U1-Iv for bug-gnu-emacs@gnu.org; Sat, 13 Feb 2016 08:44:05 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:57609) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aUaUU-0006Tv-Fr for bug-gnu-emacs@gnu.org; Sat, 13 Feb 2016 08:44:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84) (envelope-from ) id 1aUaUU-0001za-Bp for bug-gnu-emacs@gnu.org; Sat, 13 Feb 2016 08:44:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 13 Feb 2016 13:44:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 22622 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 22622-submit@debbugs.gnu.org id=B22622.14553709847579 (code B ref 22622); Sat, 13 Feb 2016 13:44:02 +0000 Original-Received: (at 22622) by debbugs.gnu.org; 13 Feb 2016 13:43:04 +0000 Original-Received: from localhost ([127.0.0.1]:38517 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aUaTY-0001yB-28 for submit@debbugs.gnu.org; Sat, 13 Feb 2016 08:43:04 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:60288) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aUaTW-0001xh-Jq for 22622@debbugs.gnu.org; Sat, 13 Feb 2016 08:43:02 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aUaTO-0006DU-Eq for 22622@debbugs.gnu.org; Sat, 13 Feb 2016 08:42:57 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:54941) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aUaTO-0006DQ-Bd; Sat, 13 Feb 2016 08:42:54 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4754 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aUaTN-0000XL-JI; Sat, 13 Feb 2016 08:42:54 -0500 In-reply-to: (message from Richard Sharman on Wed, 10 Feb 2016 18:27:30 +0000) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:112965 Archived-At: > From: Richard Sharman > Date: Wed, 10 Feb 2016 18:27:30 +0000 > Cc: Richard Sharman > > I'm not sure if this is a bug or not. > > When running emacs -batch, if a function modifies a buffer and calls > save-buffer and there is another emacs -batch also updating the same > file, one of them can call ask-user-about-supersession-threat [in > userlock.el]. > > This causes the emacs process to hang because read-char-choice never > returns. See traceback below. > > This happened when running make -j 6 and I changed the scenario to not > happen, but I wondered if ask-user-about-supersession-threat should be > act upon variable noninteractive. > > Perhaps one is supposed to supply a replacement for > ask-user-about-supersession-threat if running emacs in batch mode? Does anyone see a problem with automatically answering NO to that question in batch mode?