From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Drew Adams" Newsgroups: gmane.emacs.bugs Subject: bug#12515: 24.2.50; Error during redisplay: (eval (mode-line-eol-desc)) signaled (quit) Date: Tue, 25 Sep 2012 13:51:38 -0700 Message-ID: <92DF3648D1164884A80C7CA71D1DBF1A@us.oracle.com> References: <83sja5hn5c.fsf@gnu.org> <83r4pphm96.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1348606388 5174 80.91.229.3 (25 Sep 2012 20:53:08 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 25 Sep 2012 20:53:08 +0000 (UTC) Cc: 12515@debbugs.gnu.org To: "'Eli Zaretskii'" Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Sep 25 22:53:11 2012 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 1TGc7y-0005yt-Tn for geb-bug-gnu-emacs@m.gmane.org; Tue, 25 Sep 2012 22:53:11 +0200 Original-Received: from localhost ([::1]:43786 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TGc7u-0006FO-0C for geb-bug-gnu-emacs@m.gmane.org; Tue, 25 Sep 2012 16:53:06 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:49548) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TGc7q-0006EQ-I9 for bug-gnu-emacs@gnu.org; Tue, 25 Sep 2012 16:53:03 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TGc7p-0000bz-Ej for bug-gnu-emacs@gnu.org; Tue, 25 Sep 2012 16:53:02 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:46291) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TGc7p-0000br-BK for bug-gnu-emacs@gnu.org; Tue, 25 Sep 2012 16:53:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1TGc9m-00006G-7Y for bug-gnu-emacs@gnu.org; Tue, 25 Sep 2012 16:55:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: "Drew Adams" Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 25 Sep 2012 20:55:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 12515 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 12515-submit@debbugs.gnu.org id=B12515.1348606443317 (code B ref 12515); Tue, 25 Sep 2012 20:55:02 +0000 Original-Received: (at 12515) by debbugs.gnu.org; 25 Sep 2012 20:54:03 +0000 Original-Received: from localhost ([127.0.0.1]:55837 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TGc8o-000054-Qe for submit@debbugs.gnu.org; Tue, 25 Sep 2012 16:54:03 -0400 Original-Received: from acsinet15.oracle.com ([141.146.126.227]:34041) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TGc8m-0008WM-CD for 12515@debbugs.gnu.org; Tue, 25 Sep 2012 16:54:01 -0400 Original-Received: from acsinet22.oracle.com (acsinet22.oracle.com [141.146.126.238]) by acsinet15.oracle.com (Sentrion-MTA-4.2.2/Sentrion-MTA-4.2.2) with ESMTP id q8PKpu0P025545 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 25 Sep 2012 20:51:57 GMT Original-Received: from acsmt356.oracle.com (acsmt356.oracle.com [141.146.40.156]) by acsinet22.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id q8PKpup6000936 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 25 Sep 2012 20:51:56 GMT Original-Received: from abhmt110.oracle.com (abhmt110.oracle.com [141.146.116.62]) by acsmt356.oracle.com (8.12.11.20060308/8.12.11) with ESMTP id q8PKpu7J028655; Tue, 25 Sep 2012 15:51:56 -0500 Original-Received: from dradamslap1 (/10.159.183.137) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 25 Sep 2012 13:51:56 -0700 X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <83r4pphm96.fsf@gnu.org> Thread-Index: Ac2bXZ/dIU/r848XTTe/cqKut/MwuwAAH3TA X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-Source-IP: acsinet22.oracle.com [141.146.126.238] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 140.186.70.43 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:64888 Archived-At: > Unless you see a lot of these messages in *Messages*, I wouldn't worry > about this. OK, good. I noticed it only once. > What happens is that as part of redisplay of the mode line, the > display engine calls the function mode-line-eol-desc (defined on > bindings.el), which produces the end-of-line (EOL) indicator near the > left edge of the mode line. Because signaling an error normally > re-enters redisplay (to display the error message), the display code > suppresses the normal way of processing signals from Lisp it calls, > and instead intercepts all signals and adds this kind of message to > *Messages*. Since mode-line-eol-desc does not disable quitting (maybe > it should), hitting C-g when it runs could cause this signal, I think. Thanks for taking the time to explain this. I guess part of what you are saying (implying) is that _quitting_ (C-g), because it involves signalling, also "normally re-enters redisplay (to display the" quit message). Sounds like `mode-line-eol-desc' should disable quitting only if it is guaranteed to end quickly. IOW, code that disables quitting should not prevent a user from actually quitting in a timely manner. When you say "disable quitting", do you mean that the user would need to hit `C-g' again, or only that the `C-g' would not be processed until after redisplay finishes (i.e., respects a previously set `quit-flag')? BTW, I looked in `(elisp) Quitting' for some explanation of this, but it does not seem to mention "display" or "redisplay" at all. (It does mention C code, however.)