From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: Stefan Monnier <monnier@iro.umontreal.ca>
Newsgroups: gmane.emacs.help
Subject: Re: Emacs version and LISP interpretation
Date: Thu, 09 Dec 2010 22:54:26 -0500
Organization: A noiseless patient Spider
Message-ID: <jwvr5dq70cs.fsf-monnier+gnu.emacs.help@gnu.org>
References: <20887d97-75a1-4316-ba77-9105d5a029a0@37g2000yqm.googlegroups.com>
	<jwviq6t4184.fsf-monnier+gnu.emacs.help@gnu.org>
	<mailman.16.1291834103.24257.help-gnu-emacs@gnu.org>
NNTP-Posting-Host: lo.gmane.org
Mime-Version: 1.0
Content-Type: text/plain
X-Trace: dough.gmane.org 1291957466 14956 80.91.229.12 (10 Dec 2010 05:04:26 GMT)
X-Complaints-To: usenet@dough.gmane.org
NNTP-Posting-Date: Fri, 10 Dec 2010 05:04:26 +0000 (UTC)
To: help-gnu-emacs@gnu.org
Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Dec 10 06:04:22 2010
Return-path: <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>
Envelope-to: geh-help-gnu-emacs@m.gmane.org
Original-Received: from lists.gnu.org ([199.232.76.165])
	by lo.gmane.org with esmtp (Exim 4.69)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1PQv9a-0000zb-6Z
	for geh-help-gnu-emacs@m.gmane.org; Fri, 10 Dec 2010 06:04:22 +0100
Original-Received: from localhost ([127.0.0.1]:38077 helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43)
	id 1PQv9Z-0006Ve-E2
	for geh-help-gnu-emacs@m.gmane.org; Fri, 10 Dec 2010 00:04:21 -0500
Original-Path: usenet.stanford.edu!newsserver.news.garr.it!kanaga.switch.ch!switch.ch!ecngs!feeder2.ecngs.de!78.46.240.70.MISMATCH!weretis.net!feeder4.news.weretis.net!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail
Original-Newsgroups: gnu.emacs.help
Original-Lines: 17
Injection-Info: mx01.eternal-september.org;
	posting-host="5ESV0E4sfgtqyPsXa8d/qg"; 
	logging-data="13965"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX19h4HfFndO7iQxwnPU6oWAV"
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux)
Cancel-Lock: sha1:Z7C5L6GRMw5VDriMq2LwNh+2WS0=
	sha1:VFBeqmpL36Y26jcVSH+ZifzdpeU=
Original-Xref: usenet.stanford.edu gnu.emacs.help:183116
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Unsubscribe: <http://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/help-gnu-emacs>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <http://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Xref: news.gmane.org gmane.emacs.help:77354
Archived-At: <http://permalink.gmane.org/gmane.emacs.help/77354>

> So the answer is that you need to change (insert ?\s) to (insert ?\s ).
> That is, leave at least one space after the \s.

No, ?\s is new, so ?\s won't work even if you add a space after it.
The old syntax is ?\  (where the space after the backslash is important).

> I've seen more than one library broken this way (broken for older Emacs
> versions).

We (Emacs maintainers) only changed the code of the files distributed
along with Emacs, so we don't get to introduce such bugs directly.
Of course, some of those changes are then fed back upstream and the
upstream maintainer may either fail to notice the incompatibility
introduced, or consider it to be minor.


        Stefan