From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.bugs Subject: bug#17109: 24.4.50; REGRESSION: `with-output-to-temp-buffer' is broken Date: Fri, 28 Mar 2014 14:45:35 -0700 (PDT) Message-ID: References: <87fvm47yoi.fsf@yahoo.fr> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1396043176 19229 80.91.229.3 (28 Mar 2014 21:46:16 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 28 Mar 2014 21:46:16 +0000 (UTC) Cc: 17109@debbugs.gnu.org To: Nicolas Richard , Leo Liu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Mar 28 22:46:24 2014 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 1WTebX-00062S-9v for geb-bug-gnu-emacs@m.gmane.org; Fri, 28 Mar 2014 22:46:23 +0100 Original-Received: from localhost ([::1]:36098 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WTebW-0007JE-Kf for geb-bug-gnu-emacs@m.gmane.org; Fri, 28 Mar 2014 17:46:22 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:57827) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WTebL-0007Is-81 for bug-gnu-emacs@gnu.org; Fri, 28 Mar 2014 17:46:20 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WTebC-0008G7-Gj for bug-gnu-emacs@gnu.org; Fri, 28 Mar 2014 17:46:11 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:53993) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WTebC-0008Fz-Cw for bug-gnu-emacs@gnu.org; Fri, 28 Mar 2014 17:46:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1WTebB-00006f-MP for bug-gnu-emacs@gnu.org; Fri, 28 Mar 2014 17:46:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Drew Adams Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 28 Mar 2014 21:46:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 17109 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 17109-submit@debbugs.gnu.org id=B17109.1396043144377 (code B ref 17109); Fri, 28 Mar 2014 21:46:01 +0000 Original-Received: (at 17109) by debbugs.gnu.org; 28 Mar 2014 21:45:44 +0000 Original-Received: from localhost ([127.0.0.1]:55175 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WTeat-000060-G5 for submit@debbugs.gnu.org; Fri, 28 Mar 2014 17:45:43 -0400 Original-Received: from aserp1040.oracle.com ([141.146.126.69]:24745) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WTeaq-00005p-BN for 17109@debbugs.gnu.org; Fri, 28 Mar 2014 17:45:41 -0400 Original-Received: from ucsinet21.oracle.com (ucsinet21.oracle.com [156.151.31.93]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id s2SLjb52004489 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 28 Mar 2014 21:45:38 GMT Original-Received: from userz7022.oracle.com (userz7022.oracle.com [156.151.31.86]) by ucsinet21.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id s2SLjaXm015332 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 28 Mar 2014 21:45:37 GMT Original-Received: from abhmp0002.oracle.com (abhmp0002.oracle.com [141.146.116.8]) by userz7022.oracle.com (8.14.5+Sun/8.14.4) with ESMTP id s2SLja5C007114; Fri, 28 Mar 2014 21:45:36 GMT In-Reply-To: X-Priority: 3 X-Mailer: Oracle Beehive Extensions for Outlook 2.0.1.8 (707110) [OL 12.0.6680.5000 (x86)] X-Source-IP: ucsinet21.oracle.com [156.151.31.93] 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:87499 Archived-At: > 5. What you must NOT do is change the behavior of the existing macro, > so that any code that uses it breaks. I *really* hope that someone please takes this regression seriously. I have lots of code that defines help functions of different kinds, and it all uses `with-output-to-temp-buffer'. And it all needs to work across multiple Emacs versions. For example, Bookmark+ has a command `bmkp-describe-bookmark'. It does various things, but the first thing it does is this: (with-output-to-temp-buffer "*Help*" (princ help-text)) That's a standard Emacs idiom, and has been so for decades. Now it is broken. Buffer *Help* ends up in Fundamental mode. This should not be so. I do not understand why anyone would change the behavior of a macro such as `with-output-to-temp-buffer'. There are plenty of other ways to get whatever new behavior you want, without doing that.