From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: "Richard M. Stallman" <rms@gnu.org>
Newsgroups: gmane.emacs.bugs
Subject: Re: save-excursion doesn't restore point
Date: Wed, 25 Jan 2006 21:47:07 -0500
Message-ID: <E1F1xAB-0002n8-73@fencepost.gnu.org>
References: <20060124171233.1670DBACC@happygiraffe.net>
Reply-To: rms@gnu.org
NNTP-Posting-Host: main.gmane.org
Content-Type: text/plain; charset=ISO-8859-15
X-Trace: sea.gmane.org 1138243676 16564 80.91.229.2 (26 Jan 2006 02:47:56 GMT)
X-Complaints-To: usenet@sea.gmane.org
NNTP-Posting-Date: Thu, 26 Jan 2006 02:47:56 +0000 (UTC)
Cc: bug-gnu-emacs@gnu.org
Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Jan 26 03:47:50 2006
Return-path: <bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org>
Envelope-to: geb-bug-gnu-emacs@m.gmane.org
Original-Received: from lists.gnu.org ([199.232.76.165])
	by ciao.gmane.org with esmtp (Exim 4.43)
	id 1F1xAV-0000w6-Qa
	for geb-bug-gnu-emacs@m.gmane.org; Thu, 26 Jan 2006 03:47:31 +0100
Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43)
	id 1F1xDH-0007fu-0M
	for geb-bug-gnu-emacs@m.gmane.org; Wed, 25 Jan 2006 21:50:19 -0500
Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1F1xDD-0007fN-Qh
	for bug-gnu-emacs@gnu.org; Wed, 25 Jan 2006 21:50:15 -0500
Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1F1xDD-0007ex-3Y
	for bug-gnu-emacs@gnu.org; Wed, 25 Jan 2006 21:50:15 -0500
Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1F1xDC-0007et-Vh
	for bug-gnu-emacs@gnu.org; Wed, 25 Jan 2006 21:50:15 -0500
Original-Received: from [199.232.76.164] (helo=fencepost.gnu.org)
	by monty-python.gnu.org with esmtp (Exim 4.52) id 1F1xAh-0007Hx-IG
	for bug-gnu-emacs@gnu.org; Wed, 25 Jan 2006 21:47:39 -0500
Original-Received: from rms by fencepost.gnu.org with local (Exim 4.34)
	id 1F1xAB-0002n8-73; Wed, 25 Jan 2006 21:47:07 -0500
Original-To: Dominic Mitchell <dom@ppe.happygiraffe.net>
In-reply-to: <20060124171233.1670DBACC@happygiraffe.net> (message from Dominic
	Mitchell on Tue, 24 Jan 2006 17:12:33 +0000 (GMT))
X-BeenThere: bug-gnu-emacs@gnu.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "Bug reports for GNU Emacs,
	the Swiss army knife of text editors" <bug-gnu-emacs.gnu.org>
List-Unsubscribe: <http://lists.gnu.org/mailman/listinfo/bug-gnu-emacs>,
	<mailto:bug-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/bug-gnu-emacs>
List-Post: <mailto:bug-gnu-emacs@gnu.org>
List-Help: <mailto:bug-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <http://lists.gnu.org/mailman/listinfo/bug-gnu-emacs>,
	<mailto:bug-gnu-emacs-request@gnu.org?subject=subscribe>
Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org
Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org
Xref: news.gmane.org gmane.emacs.bugs:14748
Archived-At: <http://permalink.gmane.org/gmane.emacs.bugs/14748>

    I would guess that this is because save-excursion uses markers, and
    those markers then get invalidated by shell-command-on-region.

I think so.

								    But
    it's still a little weird.  Is this a bug?
    
I think it is simply inevitable.  If all the text is replaced,
Emacs has no way of knowing what new position corresponds in any sense
to some old position.