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#22715: 25.0.91; Point randomly jumps during key entry Date: Wed, 17 Feb 2016 18:43:05 +0200 Message-ID: <83r3gbuw2u.fsf@gnu.org> References: <20160217013949.GE2649@srevilak.net> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1455728253 8473 80.91.229.3 (17 Feb 2016 16:57:33 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 17 Feb 2016 16:57:33 +0000 (UTC) Cc: 22715@debbugs.gnu.org To: Steve Revilak Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Feb 17 17:57:18 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 1aW5Pg-0003Ct-Tm for geb-bug-gnu-emacs@m.gmane.org; Wed, 17 Feb 2016 17:57:17 +0100 Original-Received: from localhost ([::1]:59561 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aW5Pd-0000YJ-15 for geb-bug-gnu-emacs@m.gmane.org; Wed, 17 Feb 2016 11:57:13 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59904) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aW5PX-0000X6-Ud for bug-gnu-emacs@gnu.org; Wed, 17 Feb 2016 11:57:09 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aW5PT-00061M-P5 for bug-gnu-emacs@gnu.org; Wed, 17 Feb 2016 11:57:07 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:34451) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aW5PT-00061I-Kz for bug-gnu-emacs@gnu.org; Wed, 17 Feb 2016 11:57:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84) (envelope-from ) id 1aW5PT-0000eC-Er for bug-gnu-emacs@gnu.org; Wed, 17 Feb 2016 11:57:03 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 17 Feb 2016 16:57:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 22715 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 22715-submit@debbugs.gnu.org id=B22715.14557282022432 (code B ref 22715); Wed, 17 Feb 2016 16:57:03 +0000 Original-Received: (at 22715) by debbugs.gnu.org; 17 Feb 2016 16:56:42 +0000 Original-Received: from localhost ([127.0.0.1]:59803 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aW5P8-0000d5-CY for submit@debbugs.gnu.org; Wed, 17 Feb 2016 11:56:42 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:40573) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aW5P7-0000cM-0t for 22715@debbugs.gnu.org; Wed, 17 Feb 2016 11:56:41 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aW5Bk-0002WM-Bb for 22715@debbugs.gnu.org; Wed, 17 Feb 2016 11:42:55 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:55987) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aW5Bk-0002WI-8A; Wed, 17 Feb 2016 11:42:52 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4689 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aW5Bj-0001j3-Jx; Wed, 17 Feb 2016 11:42:52 -0500 In-reply-to: <20160217013949.GE2649@srevilak.net> (message from Steve Revilak on Tue, 16 Feb 2016 20:39:49 -0500) 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:113194 Archived-At: > Date: Tue, 16 Feb 2016 20:39:49 -0500 > From: Steve Revilak > > First, please accept my apologies for the poor bug report. I'm calling > it a poor bug report because I've been unable to find a simple recipe > that easily reproduces the behavior I'm seeing. > > The behavior itself is easy to describe: while providing keyboard input, > sometimes point jumps to a (seemingly) random place in the buffer. > > Some examples > > - while holding the UP arrow to slowly scroll upwards in the current > buffer, point suddenly `jumps' up, over several screenfuls of text > > - while typing (ordinary alphanumeric text), point jumps to a line > near the top of the file. I've noticed this most often when using > emacs to write java code. I'll be typing away in the body of a > method, and point will jump to a position in the file header > comment, several hundred lines earlier. > > This doesn't happen very often. Perhaps 3--4 times during a work day. > I have not found a way to make it happen on demand. > > I've experienced this behavior in 25.0.90 and 25.0.91, but not in > earlier versions. > > I typically see this behavior in java-mode and org-mode. That said, the > vast majority of my emacs usage involves java-mode and org-mode. > > I've seen this behavior on two different x86_64 GNU/Linux systems. > One system runs Redhat 6.4, and the other runs OpenSUSE 13.2. Both > systems have `standard' USB keyboards, and optical mice. > > If I'm able to find a nice set of steps to reproduce, I'll add them to > this bug report. > > If there are suggestions for gathering/providing more information, > please let me know, and I'll gladly try them. Thanks. It's indeed hard to do anything with this without more details. Some questions: . Are the problems in java-mode and org-mode similar? It doesn't sound like that, but I'm not sure. . Do you have similar Emacs customizations on both systems where you see this? . Can you make this happen in "emacs -Q"? Thanks.