From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: bojohan+news@dd.chalmers.se (Johan =?utf-8?Q?Bockg=C3=A5rd?=) Newsgroups: gmane.emacs.devel Subject: Re: [PATCH] New convenience macros Date: Thu, 23 Aug 2007 16:12:30 +0200 Message-ID: References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: sea.gmane.org 1187878424 4533 80.91.229.12 (23 Aug 2007 14:13:44 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Thu, 23 Aug 2007 14:13:44 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Aug 23 16:13:41 2007 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 1IODRL-0008HX-RJ for ged-emacs-devel@m.gmane.org; Thu, 23 Aug 2007 16:13:40 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IODRL-0004le-AJ for ged-emacs-devel@m.gmane.org; Thu, 23 Aug 2007 10:13:39 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IODQc-0004Xa-P8 for emacs-devel@gnu.org; Thu, 23 Aug 2007 10:12:54 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IODQa-0004Wn-Um for emacs-devel@gnu.org; Thu, 23 Aug 2007 10:12:54 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IODQa-0004Wh-K9 for emacs-devel@gnu.org; Thu, 23 Aug 2007 10:12:52 -0400 Original-Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1IODQa-00077g-0x for emacs-devel@gnu.org; Thu, 23 Aug 2007 10:12:52 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1IODQU-0003ae-At for emacs-devel@gnu.org; Thu, 23 Aug 2007 16:12:46 +0200 Original-Received: from gamma02.me.chalmers.se ([129.16.50.72]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 23 Aug 2007 16:12:46 +0200 Original-Received: from bojohan+news by gamma02.me.chalmers.se with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 23 Aug 2007 16:12:46 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: emacs-devel@gnu.org Original-Lines: 16 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: gamma02.me.chalmers.se Mail-Copies-To: never User-Agent: Gnus/5.110007 (No Gnus v0.7) Emacs/22.1.50 (gnu/linux) Cancel-Lock: sha1:2Zf/4sPqKC11RHQcp4HFSckNJV4= X-Detected-Kernel: 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." 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:77029 Archived-At: Steve Youngs writes: > However, there are situations where this optimisation won't work, > here's an example... > > (if (and (featurep 'simple) (featurep 'xemacs)) a b) > > warns about free variables for both `a' and `b'. So I think having the > macros as well as the optimisation is a good idea. It does the right thing if you reverse the order of the feature tests. The compiler could do better though. -- Johan Bockgård