From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Markus Triska Newsgroups: gmane.emacs.bugs Subject: bug#23871: 25.1.50; Undo unexpectedly leads to blank buffer Date: Sun, 03 Jul 2016 12:08:01 +0200 Message-ID: <87d1mv9gqm.fsf@metalevel.at> References: <83h9cavdgj.fsf@gnu.org> <87poqyy2tc.fsf@metalevel.at> <87vb0qqrkz.fsf@russet.org.uk> <87h9c9zx75.fsf@metalevel.at> <834m89vmyv.fsf@gnu.org> <878txlsbdb.fsf@russet.org.uk> <87furtccdv.fsf@metalevel.at> <877fd5q9te.fsf@russet.org.uk> <83bn2gtruk.fsf@gnu.org> <87k2h37pvb.fsf@russet.org.uk> <87zipz223y.fsf@metalevel.at> <87a8hzkqp2.fsf@russet.org.uk> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1467540565 11123 80.91.229.3 (3 Jul 2016 10:09:25 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 3 Jul 2016 10:09:25 +0000 (UTC) Cc: 23871@debbugs.gnu.org To: phillip.lord@russet.org.uk (Phillip Lord) Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Jul 03 12:09:16 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 1bJeKx-0004mZ-FV for geb-bug-gnu-emacs@m.gmane.org; Sun, 03 Jul 2016 12:09:15 +0200 Original-Received: from localhost ([::1]:41942 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bJeKt-0002Rk-9q for geb-bug-gnu-emacs@m.gmane.org; Sun, 03 Jul 2016 06:09:11 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:41809) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bJeKo-0002RR-6G for bug-gnu-emacs@gnu.org; Sun, 03 Jul 2016 06:09:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bJeKk-0003Tw-0s for bug-gnu-emacs@gnu.org; Sun, 03 Jul 2016 06:09:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:51036) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bJeKj-0003Ts-UH for bug-gnu-emacs@gnu.org; Sun, 03 Jul 2016 06:09:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1bJeKj-00081S-KU for bug-gnu-emacs@gnu.org; Sun, 03 Jul 2016 06:09:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Markus Triska Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 03 Jul 2016 10:09:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 23871 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 23871-submit@debbugs.gnu.org id=B23871.146754048430757 (code B ref 23871); Sun, 03 Jul 2016 10:09:01 +0000 Original-Received: (at 23871) by debbugs.gnu.org; 3 Jul 2016 10:08:04 +0000 Original-Received: from localhost ([127.0.0.1]:35137 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bJeJo-000800-0F for submit@debbugs.gnu.org; Sun, 03 Jul 2016 06:08:04 -0400 Original-Received: from metalevel.at ([78.46.218.83]:51130) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bJeJm-0007zq-PC for 23871@debbugs.gnu.org; Sun, 03 Jul 2016 06:08:03 -0400 Original-Received: by metalevel.at (Postfix, from userid 1000) id 84285A0277; Sun, 3 Jul 2016 12:08:01 +0200 (CEST) In-Reply-To: <87a8hzkqp2.fsf@russet.org.uk> (Phillip Lord's message of "Sun, 03 Jul 2016 10:37:29 +0100") User-Agent: Emacs/24.4 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" Xref: news.gmane.org gmane.emacs.bugs:120326 Archived-At: phillip.lord@russet.org.uk (Phillip Lord) writes: > I haven't started to look at 23871 yet, only 21722; I would rather deal > with the simple case first. Can you tell me whether it fixes this > case? The patch fixes the concrete case reported in #21722 but leads to a new problem with undo that is not there without this patch. I cannot regard this as a good fix for #21722. If you want to close #21722 after applying your patch, I can file a new report for the new problem. Please note that #23871 is the main problem for me and has been present in Emacs for about a decade. The other issues I filed are only my attempts to make the issue more easily reproducible, and may in fact even be unrelated issues that I find while trying to find the root cause of #23871. I first filed #1095, then adapted this to #21722, and now also filed #23871 because redisplay may also be involved. I have tolerated the problems described in #1095 and #21722 for about a decade and see no reason to delay Emacs 25: Neither Emacs 23 nor 24 were delayed because of them although these issues were already reported! #23871 was also present during this time but not yet reported. All the best, Markus