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#10114: 24.0.91; (not (eq (current-buffer) (window-buffer (selected-window)))) Date: Wed, 23 Nov 2011 11:06:44 +0100 Message-ID: <4ECCC5B4.5080504@gmx.at> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1322042870 19953 80.91.229.12 (23 Nov 2011 10:07:50 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Wed, 23 Nov 2011 10:07:50 +0000 (UTC) Cc: Richard Copley To: 10114-done@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Nov 23 11:07:43 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1RT9jy-0007WS-MQ for geb-bug-gnu-emacs@m.gmane.org; Wed, 23 Nov 2011 11:07:42 +0100 Original-Received: from localhost ([::1]:40340 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RT9jx-0001yJ-9e for geb-bug-gnu-emacs@m.gmane.org; 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Wed, 23 Nov 2011 10:09:02 +0000 Original-Received: (at 10114-done) by debbugs.gnu.org; 23 Nov 2011 10:08:14 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1RT9kT-0007Ea-VG for submit@debbugs.gnu.org; Wed, 23 Nov 2011 05:08:14 -0500 Original-Received: from mailout-de.gmx.net ([213.165.64.23]) by debbugs.gnu.org with smtp (Exim 4.69) (envelope-from ) id 1RT9kR-0007ER-G1 for 10114-done@debbugs.gnu.org; Wed, 23 Nov 2011 05:08:12 -0500 Original-Received: (qmail invoked by alias); 23 Nov 2011 10:06:45 -0000 Original-Received: from 62-47-42-114.adsl.highway.telekom.at (EHLO [62.47.42.114]) [62.47.42.114] by mail.gmx.net (mp069) with SMTP; 23 Nov 2011 11:06:45 +0100 X-Authenticated: #14592706 X-Provags-ID: V01U2FsdGVkX19dSL0G2NxdyIfBiBg1ilCOoulzDo4nrA6GRjkPwI KgNtgYkZ/lXcP2 User-Agent: Thunderbird 2.0.0.21 (Windows/20090302) In-Reply-To: X-Y-GMX-Trusted: 0 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Wed, 23 Nov 2011 05:09:02 -0500 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:54206 Archived-At: > When you remove the current buffer from the selected window, > the buffer that gets displayed in the selected window isn't always > the same as the buffer that gets made the new current buffer. > The command M-x test (see below) manifests the problem > for me from runemacs -Q. > > Output on Emacs 23.3: > Current: *Test*<2>; Selected: *Test*<2>; [...] > Current: *Test*<1>; Selected: *Test*<1>; [...] > > Output on Emacs bzr trunk: > Current: *Test*<2>; Selected: *Test*<2>; [...] > Current: *Test*<1>; Selected: *scratch*; [...] The output on Emacs bzr trunk should be Current: *Test*<2>; Selected: *Test*<2>; [...] Current: *scratch*; Selected: *scratch*; [...] because *scratch* was the buffer shown before *Test*<2>*. > (defun test () > (interactive) > (progn > ;; This seems to sow enough confusion. > (switch-to-buffer-other-window "*Test*<1>") > (switch-to-buffer-other-window "*Test*<2>") > (delete-other-windows)) > (while > (progn > (message > "Current: %s; Selected: %s; \ > type k to kill current buffer, \ > any other key to quit" > (current-buffer) > (window-buffer (selected-window))) > (and (eq (read-event) ?k) > (kill-buffer)))) > (clear-this-command-keys t)) > > In GNU Emacs 24.0.91.1 (i386-mingw-nt6.1.7601) > of 2011-11-20 on MACHINE > Windowing system distributor `Microsoft Corp.', version 6.1.7601 > configured using `configure --with-gcc (4.6)' The problems happens because `kill-buffer' makes another buffer current when killing the current buffer and calls `replace-buffer-in-windows' which ends up calling `switch-to-prev-buffer' for the selected window. The latter refuses to change the current buffer because the selected window's buffer is _not_ the current buffer (a behavior needed to make `switch-to-prev-buffer' work within buffer excursions). So the solution is to have `kill-buffer' call `replace-buffer-in-windows' _before_ making another buffer current. Thanks for the excellent report, martin