From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Jambunathan K Newsgroups: gmane.emacs.bugs Subject: bug#14486: 24.3.50; A very subtle/obscure bug - with-temp-buffer + pop-to-buffer + insert Date: Tue, 28 May 2013 08:16:41 +0530 Message-ID: <878v2zn7n2.fsf@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1369709284 23252 80.91.229.3 (28 May 2013 02:48:04 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 28 May 2013 02:48:04 +0000 (UTC) To: 14486@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue May 28 04:48:04 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 1Uh9xD-0002x4-Tu for geb-bug-gnu-emacs@m.gmane.org; Tue, 28 May 2013 04:48:04 +0200 Original-Received: from localhost ([::1]:40364 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Uh9xD-0002Mu-D8 for geb-bug-gnu-emacs@m.gmane.org; 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Mon, 27 May 2013 19:46:37 -0700 (PDT) Original-Received: from debian-6.05 ([115.241.127.204]) by mx.google.com with ESMTPSA id qi1sm32977918pac.21.2013.05.27.19.46.35 for (version=TLSv1.1 cipher=RC4-SHA bits=128/128); Mon, 27 May 2013 19:46:37 -0700 (PDT) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x 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.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:74611 Archived-At: A very subtle/obscure bug. I have a hard time explaining the observed behaviour. 1. emacs -Q 2. In the scratch buffer copy the following snippet and install it. (defvar count 1) (defun testing () (interactive) (forward-line 1) (insert (with-temp-buffer (insert (format "string-%d\n" (setq count (+ 1 count)))) (pop-to-buffer (current-buffer)) (buffer-string)))) 3. M-> 4. M-x testing C-x o M-x testing C-x o M-x testing C-x o 5. Expected behaviour: Point should be at the END of the scratch buffer Observed behaviour: Not as expected. Now comment out the `pop-to-buffer' in the snippet above, install the changes and repeat. You will see that the point is at END of the scratch buffer. In GNU Emacs 24.3.50.3 (i686-pc-linux-gnu, GTK+ Version 2.20.1) of 2013-05-27 on debian-6.05 Bzr revision: 112737 monnier@iro.umontreal.ca-20130527010843-s4qzq34vq5x532aj Windowing system distributor `The X.Org Foundation', version 11.0.10707000 Important settings: value of $LANG: en_IN locale-coding-system: iso-latin-1-unix default enable-multibyte-characters: t