From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.devel Subject: Re: GC: marking traversal and pure symbols Date: Fri, 06 Jul 2007 11:29:49 +0200 Message-ID: References: <468CEDAF.20706@yandex.ru> <86wsxej8vu.fsf@lola.quinscape.zz> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: sea.gmane.org 1183714213 22645 80.91.229.12 (6 Jul 2007 09:30:13 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 6 Jul 2007 09:30:13 +0000 (UTC) Cc: Dmitry Antipov , rms@gnu.org, emacs-devel@gnu.org To: David Kastrup Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Jul 06 11:30:11 2007 connect(): Connection refused Return-path: 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 1I6k8g-0007Bc-VG for ged-emacs-devel@m.gmane.org; Fri, 06 Jul 2007 11:30:11 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1I6k8g-00005k-66 for ged-emacs-devel@m.gmane.org; Fri, 06 Jul 2007 05:30:10 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1I6k8c-00005Y-Ct for emacs-devel@gnu.org; Fri, 06 Jul 2007 05:30:06 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1I6k8Z-0008VM-UX for emacs-devel@gnu.org; Fri, 06 Jul 2007 05:30:05 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1I6k8Z-0008VC-Rj for emacs-devel@gnu.org; Fri, 06 Jul 2007 05:30:03 -0400 Original-Received: from ns.suse.de ([195.135.220.2] helo=mx1.suse.de) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1I6k8R-0000fE-R3; Fri, 06 Jul 2007 05:29:56 -0400 Original-Received: from Relay1.suse.de (mail2.suse.de [195.135.221.8]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.suse.de (Postfix) with ESMTP id E76E5122BB; Fri, 6 Jul 2007 11:29:49 +0200 (CEST) X-Yow: O.K.! Speak with a PHILADELPHIA ACCENT!! Send out for CHINESE FOOD!! Hop a JET! In-Reply-To: <86wsxej8vu.fsf@lola.quinscape.zz> (David Kastrup's message of "Fri\, 06 Jul 2007 09\:20\:37 +0200") User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.1 (gnu/linux) X-detected-kernel: Linux 2.4-2.6 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-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:74383 Archived-At: David Kastrup writes: > Richard Stallman writes: > >> We can't make Qnil pure, because its plist can be written. >> (It can also be defined as a function, though that would be an >> ugly thing to do.) > > Would it not make sense to restrict the purity notion to the value > cell of a symbol? It wouldn't buy us anything, since the value of Qnil is nil. Andreas. --=20 Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux Products GmbH, Maxfeldstra=DFe 5, 90409 N=FCrnberg, Germany PGP key fingerprint =3D 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED= 5 "And now for something completely different."