From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Helmut Eller Newsgroups: gmane.emacs.devel Subject: Re: e and pi Date: Fri, 17 Sep 2010 17:56:04 +0200 Message-ID: References: <8739t9xpt2.fsf@stupidchicken.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1284738987 21495 80.91.229.12 (17 Sep 2010 15:56:27 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 17 Sep 2010 15:56:27 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Sep 17 17:56:24 2010 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 4.69) (envelope-from ) id 1OwdIV-0005QU-P9 for ged-emacs-devel@m.gmane.org; Fri, 17 Sep 2010 17:56:24 +0200 Original-Received: from localhost ([127.0.0.1]:58796 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OwdIV-0005NB-4c for ged-emacs-devel@m.gmane.org; Fri, 17 Sep 2010 11:56:23 -0400 Original-Received: from [140.186.70.92] (port=43673 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OwdIN-0005Mo-W6 for emacs-devel@gnu.org; Fri, 17 Sep 2010 11:56:16 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OwdIM-0005uY-4a for emacs-devel@gnu.org; Fri, 17 Sep 2010 11:56:15 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:34511) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OwdIL-0005uK-VW for emacs-devel@gnu.org; Fri, 17 Sep 2010 11:56:14 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1OwdIK-0005JD-8n for emacs-devel@gnu.org; Fri, 17 Sep 2010 17:56:12 +0200 Original-Received: from dial-181118.pool.broadband44.net ([212.46.181.118]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 17 Sep 2010 17:56:12 +0200 Original-Received: from eller.helmut by dial-181118.pool.broadband44.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 17 Sep 2010 17:56:12 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 14 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: dial-181118.pool.broadband44.net User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) Cancel-Lock: sha1:fLujBHjZLgvFok6UEhfD912V1do= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) 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:130328 Archived-At: * Lars Magne Ingebrigtsen [2010-09-17 15:22] writes: > Having > defconst not introduce special variables would be non-ideal (in my > opinion), since defconst does do that in Common Lisp. In CL it's called DEFCONSTANT and constants are not special. Using a constant in SETQ, LET, or LAMBDA is not allowed (it's an error in most implementations, just like setq on t is an error in Elisp). Even evaluating DEFCONSTANT twice is only specified if the old and new value are sufficiently similar (some implementations ask before redefining a constant with a non-eql value). Helmut