From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Pascal Bourguignon Newsgroups: gmane.emacs.help Subject: Re: (list) and '(list) Date: Fri, 27 Apr 2007 13:05:56 +0200 Organization: Informatimago Message-ID: <87zm4um60b.fsf@thalassa.lan.informatimago.com> References: <9406124.888091177600624458.JavaMail.www@wwinf4203> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1177673739 19496 80.91.229.12 (27 Apr 2007 11:35:39 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 27 Apr 2007 11:35:39 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Apr 27 13:35:37 2007 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1HhOjd-0002vr-4e for geh-help-gnu-emacs@m.gmane.org; Fri, 27 Apr 2007 13:35:33 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HhOpS-00045o-UY for geh-help-gnu-emacs@m.gmane.org; Fri, 27 Apr 2007 07:41:34 -0400 Original-Path: shelby.stanford.edu!headwall.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 20 Original-X-Trace: individual.net p0agwVYjXpaSvloviUVTgwp5PPAVG1kDGO1QBa5+kOKCzy0tsD Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en X-Disabled: X-No-Archive: no User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.91 (gnu/linux) Cancel-Lock: sha1:LgIJe/QMhMbRPJv9O/3oJYT/BH0= Original-Xref: shelby.stanford.edu gnu.emacs.help:147671 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:43274 Archived-At: Kai Grossjohann writes: > For example, to reverse the condition of `if' (proof of concept only, > not production code): > > (defmacro ifnot (test no yes) > (if (not test) no yes)) (defmacro ifnot (test no yes) `(if (not ,test) ,no ,yes)) or better: (defmacro ifnot (test no yes) `(if ,test ,yes ,no)) ; ... -- __Pascal Bourguignon__ http://www.informatimago.com/ This is a signature virus. Add me to your signature and help me to live.