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#15045: Point jumps inappropriately around time of Semantic lexing Date: Sat, 10 Aug 2013 13:22:52 +0300 Message-ID: <83haexrgjn.fsf@gnu.org> References: <87pptptk9n.fsf@engster.org> <87eha4t7xz.fsf@engster.org> <8738qksz6l.fsf@engster.org> <837gfvua2r.fsf@gnu.org> <87y58bs9x4.fsf@engster.org> <83zjsrs3k2.fsf@gnu.org> <87pptmsv4z.fsf@engster.org> <83siyira0w.fsf@gnu.org> <87vc3drhuv.fsf@engster.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1376130256 12734 80.91.229.3 (10 Aug 2013 10:24:16 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 10 Aug 2013 10:24:16 +0000 (UTC) Cc: gundaetiapo@gmail.com, 15045@debbugs.gnu.org, eric@siege-engine.com To: David Engster Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Aug 10 12:24:17 2013 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 1V86LJ-0008Q6-2G for geb-bug-gnu-emacs@m.gmane.org; Sat, 10 Aug 2013 12:24:17 +0200 Original-Received: from localhost ([::1]:49991 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V86LI-0001BE-LT for geb-bug-gnu-emacs@m.gmane.org; Sat, 10 Aug 2013 06:24:16 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59341) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V86LB-0001Aq-60 for bug-gnu-emacs@gnu.org; Sat, 10 Aug 2013 06:24:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V86L6-0003Z0-Jv for bug-gnu-emacs@gnu.org; Sat, 10 Aug 2013 06:24:09 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:56808) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V86L6-0003YN-FU for bug-gnu-emacs@gnu.org; Sat, 10 Aug 2013 06:24:04 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1V86L4-0002gK-IR for bug-gnu-emacs@gnu.org; Sat, 10 Aug 2013 06:24:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 10 Aug 2013 10:24:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15045 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 15045-submit@debbugs.gnu.org id=B15045.137613019910235 (code B ref 15045); Sat, 10 Aug 2013 10:24:02 +0000 Original-Received: (at 15045) by debbugs.gnu.org; 10 Aug 2013 10:23:19 +0000 Original-Received: from localhost ([127.0.0.1]:51124 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1V86KM-0002f1-TL for submit@debbugs.gnu.org; Sat, 10 Aug 2013 06:23:19 -0400 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:36366) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1V86KJ-0002eh-PM for 15045@debbugs.gnu.org; Sat, 10 Aug 2013 06:23:17 -0400 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0MRB00L008LJDH00@a-mtaout22.012.net.il> for 15045@debbugs.gnu.org; Sat, 10 Aug 2013 13:22:32 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MRB00LFA8TK4O80@a-mtaout22.012.net.il>; Sat, 10 Aug 2013 13:22:32 +0300 (IDT) In-reply-to: <87vc3drhuv.fsf@engster.org> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x 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:77244 Archived-At: > From: David Engster > Cc: gundaetiapo@gmail.com, monnier@iro.umontreal.ca, 15045@debbugs.gnu.org, eric@siege-engine.com > Date: Sat, 10 Aug 2013 11:54:32 +0200 > > Eli Zaretskii writes: > >> From: David Engster > >> Yes. But it shows that this bug is easy to make, and it's hard to track > >> down. > > > > It is also very rare. > > I don't think the bug is rare. I do think that this bug being triggered > is rare, since we don't have many non-idle timers in Emacs that trigger > redisplay The last sentence exactly means that the bug is rare. > (are there others in Emacs core besides the display-time event > handler?). And so does this. > It might be fun to work for a while with a dummy timer which > triggers redisplay once a second or so. Customize display-time-interval to 1 (after restoring the sit-for that got deleted), and you've got that. I'm running for years with that variable customized to 5 sec, and never saw any unwarranted movement of point or scrolling. That's "rare" in my book. > I also think this bug is seldomly reported because it's impossible to > give a recipe if you don't know that it is a timer that triggers it > (which is why I never bothered to report the bug in speck-mode). The bug database is replete with problems that are not reproducible, so I'm quite sure people would report them regardless.