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#12170: save-excursion fails boundary case with recenter Date: Fri, 10 Aug 2012 18:47:14 +0200 Message-ID: <50253B12.9010206@gmx.at> References: <000001cd7696$b0e93d60$12bbb820$@com> <5024D593.7080305@gmx.at> <003601cd76fd$b21cd590$165680b0$@com> <50251EED.3010804@gmx.at> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1344618756 4170 80.91.229.3 (10 Aug 2012 17:12:36 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 10 Aug 2012 17:12:36 +0000 (UTC) Cc: 12170@debbugs.gnu.org, Bill Brodie To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Aug 10 19:12:36 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 1SzslH-0001Db-Es for geb-bug-gnu-emacs@m.gmane.org; Fri, 10 Aug 2012 19:12:35 +0200 Original-Received: from localhost ([::1]:50071 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SzsNp-0007s9-QF for geb-bug-gnu-emacs@m.gmane.org; Fri, 10 Aug 2012 12:48:21 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:50545) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SzsNI-0006kG-3f for bug-gnu-emacs@gnu.org; Fri, 10 Aug 2012 12:47:49 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SzsNG-00086o-NY for bug-gnu-emacs@gnu.org; Fri, 10 Aug 2012 12:47:48 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:37698) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SzsNG-00086j-KT for bug-gnu-emacs@gnu.org; Fri, 10 Aug 2012 12:47:46 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1SzsVG-00013j-7m for bug-gnu-emacs@gnu.org; Fri, 10 Aug 2012 12:56:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: martin rudalics Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 10 Aug 2012 16:56:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 12170 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 12170-submit@debbugs.gnu.org id=B12170.13446177204000 (code B ref 12170); Fri, 10 Aug 2012 16:56:02 +0000 Original-Received: (at 12170) by debbugs.gnu.org; 10 Aug 2012 16:55:20 +0000 Original-Received: from localhost ([127.0.0.1]:47240 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1SzsUZ-00012T-TD for submit@debbugs.gnu.org; Fri, 10 Aug 2012 12:55:20 -0400 Original-Received: from mailout-de.gmx.net ([213.165.64.23]:50808) by debbugs.gnu.org with smtp (Exim 4.72) (envelope-from ) id 1SzsUY-00012M-BK for 12170@debbugs.gnu.org; Fri, 10 Aug 2012 12:55:18 -0400 Original-Received: (qmail invoked by alias); 10 Aug 2012 16:47:01 -0000 Original-Received: from 62-47-41-199.adsl.highway.telekom.at (EHLO [62.47.41.199]) [62.47.41.199] by mail.gmx.net (mp071) with SMTP; 10 Aug 2012 18:47:01 +0200 X-Authenticated: #14592706 X-Provags-ID: V01U2FsdGVkX18fMj8raI4f+hTnd/5pGf+x3V1uSM0YLl1jVfGwYs x84XfOnSJ1br3u In-Reply-To: X-Y-GMX-Trusted: 0 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:63014 Archived-At: > Knowing which to do when is not obvious, but IIUC if window-start has > not been changed, then the redisplay assumes that it is free to change > (window-)point, whereas otherwise it will assume that it should not > change (window-)point but can instead change window-start. IIUC redisplay_window respects the window start position specified in w->start provided w->force_start or w->frozen_window_start_p hold. Scrolling, recentering, and things like `move-to-window-line' set the former (frozen_window_start_p seems purely internal). The question is whether these should prevail subsequent point movement or, subsequent point movement should prevail and reset these flags. martin