From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: GC: marking traversal and pure symbols Date: Fri, 06 Jul 2007 09:20:37 +0200 Message-ID: <86wsxej8vu.fsf@lola.quinscape.zz> References: <468CEDAF.20706@yandex.ru> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1183706446 30746 80.91.229.12 (6 Jul 2007 07:20:46 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 6 Jul 2007 07:20:46 +0000 (UTC) Cc: Dmitry Antipov , emacs-devel@gnu.org To: rms@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Jul 06 09:20:45 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 1I6i7P-0007c3-Uy for ged-emacs-devel@m.gmane.org; Fri, 06 Jul 2007 09:20:44 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1I6i7P-0002IS-EO for ged-emacs-devel@m.gmane.org; Fri, 06 Jul 2007 03:20:43 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1I6i7L-0002Cp-LY for emacs-devel@gnu.org; Fri, 06 Jul 2007 03:20:39 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1I6i7K-0002Ab-Vz for emacs-devel@gnu.org; Fri, 06 Jul 2007 03:20:39 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1I6i7K-00029r-Nw for emacs-devel@gnu.org; Fri, 06 Jul 2007 03:20:38 -0400 Original-Received: from pc3.berlin.powerweb.de ([62.67.228.11]) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1I6i7K-0006nX-7e for emacs-devel@gnu.org; Fri, 06 Jul 2007 03:20:38 -0400 Original-Received: from quinscape.de (dslnet.212-29-44.ip210.dokom.de [212.29.44.210] (may be forged)) by pc3.berlin.powerweb.de (8.9.3p3/8.9.3) with ESMTP id JAA11700 for ; Fri, 6 Jul 2007 09:20:37 +0200 X-Delivered-To: Original-Received: (qmail 30573 invoked from network); 6 Jul 2007 07:20:37 -0000 Original-Received: from unknown (HELO lola.quinscape.zz) ([10.0.3.43]) (envelope-sender ) by ns.quinscape.de (qmail-ldap-1.03) with SMTP for ; 6 Jul 2007 07:20:37 -0000 Original-Received: by lola.quinscape.zz (Postfix, from userid 1001) id 1C6EB8F9F8; Fri, 6 Jul 2007 09:20:37 +0200 (CEST) In-Reply-To: (Richard Stallman's message of "Fri\, 06 Jul 2007 00\:38\:19 -0400") User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/23.0.51 (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:74381 Archived-At: 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? What would be the bad consequences of that? -- David Kastrup