From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Warning: `mapcar' called for effect; use `mapc' or `dolist'
Date: Tue, 23 Oct 2007 22:50:11 -0400
Message-ID: <E1IkWJv-0001Fc-PU@fencepost.gnu.org>
References: <200710200643.l9K6h9gk021348@oogie-boogie.ics.uci.edu>
	<b4mtzojbb4c.fsf@jpl.org> <v9fy0356iw.fsf@marauder.physik.uni-ulm.de>
	<200710222007.l9MK7fRZ022140@oogie-boogie.ics.uci.edu>
	<v93aw2amym.fsf@marauder.physik.uni-ulm.de>
	<87ve8y4pab.fsf@catnip.gol.com> <E1IkHAU-00044J-9b@fencepost.gnu.org>
	<buo640y6pe8.fsf@dhapc248.dev.necel.com>
Reply-To: rms@gnu.org
NNTP-Posting-Host: lo.gmane.org
Content-Type: text/plain; charset=ISO-8859-15
X-Trace: ger.gmane.org 1193194427 21699 80.91.229.12 (24 Oct 2007 02:53:47 GMT)
X-Complaints-To: usenet@ger.gmane.org
NNTP-Posting-Date: Wed, 24 Oct 2007 02:53:47 +0000 (UTC)
Cc: emacs-devel@gnu.org
To: Miles Bader <miles@gnu.org>
Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Oct 24 04:53:48 2007
Return-path: <emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org>
Envelope-to: ged-emacs-devel@m.gmane.org
Original-Received: from lists.gnu.org ([199.232.76.165])
	by lo.gmane.org with esmtp (Exim 4.50)
	id 1IkWNL-00024B-Af
	for ged-emacs-devel@m.gmane.org; Wed, 24 Oct 2007 04:53:43 +0200
Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43)
	id 1IkWND-00054U-7U
	for ged-emacs-devel@m.gmane.org; Tue, 23 Oct 2007 22:53:35 -0400
Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1IkWJy-0001X9-PR
	for emacs-devel@gnu.org; Tue, 23 Oct 2007 22:50:14 -0400
Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1IkWJx-0001WV-5B
	for emacs-devel@gnu.org; Tue, 23 Oct 2007 22:50:14 -0400
Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1IkWJw-0001WP-UC
	for emacs-devel@gnu.org; Tue, 23 Oct 2007 22:50:12 -0400
Original-Received: from fencepost.gnu.org ([140.186.70.10])
	by monty-python.gnu.org with esmtp (Exim 4.60)
	(envelope-from <rms@gnu.org>) id 1IkWJw-00066J-LY
	for emacs-devel@gnu.org; Tue, 23 Oct 2007 22:50:12 -0400
Original-Received: from rms by fencepost.gnu.org with local (Exim 4.60)
	(envelope-from <rms@gnu.org>)
	id 1IkWJv-0001Fc-PU; Tue, 23 Oct 2007 22:50:11 -0400
In-reply-to: <buo640y6pe8.fsf@dhapc248.dev.necel.com> (message from Miles
	Bader on Tue, 23 Oct 2007 20:28:47 +0900)
X-detected-kernel: by monty-python.gnu.org: Linux 2.6, seldom 2.4 (older, 4)
X-BeenThere: emacs-devel@gnu.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "Emacs development discussions." <emacs-devel.gnu.org>
List-Unsubscribe: <http://lists.gnu.org/mailman/listinfo/emacs-devel>,
	<mailto:emacs-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/emacs-devel>
List-Post: <mailto:emacs-devel@gnu.org>
List-Help: <mailto:emacs-devel-request@gnu.org?subject=help>
List-Subscribe: <http://lists.gnu.org/mailman/listinfo/emacs-devel>,
	<mailto:emacs-devel-request@gnu.org?subject=subscribe>
Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org
Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org
Xref: news.gmane.org gmane.emacs.devel:81611
Archived-At: <http://permalink.gmane.org/gmane.emacs.devel/81611>

    In Common-Lisp, I think you use (declare (special VAR ...)) to indicate
    a localized use of dynamic binding (as the first thing inside the let
    form where it is bound).

    Since Elisp already uses `declare' for some other things, it would seem
    reasonable to also use it to inform the byte compiler that an apparently
    local variable is known to be accessed non-locally.

I would not mind adding this feature to Emacs Lisp.
But I still think that part of Gnus should get a total rewrite
using a different mechanism.