From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: martin rudalics Newsgroups: gmane.emacs.bugs Subject: bug#15957: 24.3.50; Follow mode scrolling broken on Emacs trunk Date: Sun, 24 Nov 2013 11:10:32 +0100 Message-ID: <5291D098.10507@gmx.at> References: <52909877.1070203@gmx.at> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1385287880 25058 80.91.229.3 (24 Nov 2013 10:11:20 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 24 Nov 2013 10:11:20 +0000 (UTC) Cc: 15957@debbugs.gnu.org To: Anders Lindgren Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Nov 24 11:11:21 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 1VkWeu-0006lk-BD for geb-bug-gnu-emacs@m.gmane.org; Sun, 24 Nov 2013 11:11:20 +0100 Original-Received: from localhost ([::1]:46640 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VkWet-0007xa-Td for geb-bug-gnu-emacs@m.gmane.org; Sun, 24 Nov 2013 05:11:19 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:44392) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VkWej-0007xD-RW for bug-gnu-emacs@gnu.org; Sun, 24 Nov 2013 05:11:17 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VkWec-0002bO-Gs for bug-gnu-emacs@gnu.org; Sun, 24 Nov 2013 05:11:09 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:55805) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VkWec-0002bK-DG for bug-gnu-emacs@gnu.org; Sun, 24 Nov 2013 05:11:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1VkWec-0002dv-1M for bug-gnu-emacs@gnu.org; Sun, 24 Nov 2013 05:11:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: martin rudalics Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 24 Nov 2013 10:11:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15957 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 15957-submit@debbugs.gnu.org id=B15957.138528784810140 (code B ref 15957); Sun, 24 Nov 2013 10:11:01 +0000 Original-Received: (at 15957) by debbugs.gnu.org; 24 Nov 2013 10:10:48 +0000 Original-Received: from localhost ([127.0.0.1]:41591 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VkWeO-0002dU-6L for submit@debbugs.gnu.org; Sun, 24 Nov 2013 05:10:48 -0500 Original-Received: from mout.gmx.net ([212.227.15.19]:49452) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VkWeL-0002dG-6M for 15957@debbugs.gnu.org; Sun, 24 Nov 2013 05:10:46 -0500 Original-Received: from [62.47.38.99] ([62.47.38.99]) by mail.gmx.com (mrgmx101) with ESMTPSA (Nemesis) id 0Lp7d2-1V7sRG1va0-00esxy for <15957@debbugs.gnu.org>; Sun, 24 Nov 2013 11:10:39 +0100 In-Reply-To: X-Provags-ID: V03:K0:uyo8l4TQ0wVqrdaeElkBBZLZC4SElKpGWAP/TruhWLiHnzVtcSt Si9fTo3mDEJHWtHkbFUJV/L9QJUuQMngUS+cIeZsXAlwhSpscixPaXTofBVNLQO/zrIZbSz C57RYscha8iNAIJTrvF4wouP5iWJra1zLfH6Zw0N9sCttrPnoMB5+l8Ccu437JcCu59MyLz fOd9AYY4CzOHBYTHxWUOw== 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:80896 Archived-At: > I really doubt that the code in `follow-scroll-up' is broken. I didn't say so. > Follow-mode > is designed so that the rearrangement of the other windows (the ones that > follow the selected window) occur in the post-command hook (to allow > Follow-mode to act upon all Emacs commands, not only it's special > function). It appears that something has changed in the display engine, or > in the way that post-command-hook is called, that makes this mechanism > fail. This could also account for the difference we see when the function > is called via a key sequence as compared to via M-x. IIUC we'd have to find out when and where follow-mode expects the selected window to be a certain window and why this sometimes fails. So maybe you should try the change I suggested. > This is also the reason why reported this as a bug, rather than digging > into the code myself. However, I could try to add log code to Follow mode, > to check if I could try to figure out what is going on. Please do that. Thanks, martin