From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.help Subject: Re: defining many similar functions using macros Date: Mon, 04 Oct 2004 18:30:04 +0200 Organization: Organization?!? Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Message-ID: References: <41617275.5000108@yahoo.com> NNTP-Posting-Host: deer.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1096907618 453 80.91.229.6 (4 Oct 2004 16:33:38 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Mon, 4 Oct 2004 16:33:38 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Mon Oct 04 18:33:30 2004 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by deer.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 1CEVmE-0007OL-00 for ; Mon, 04 Oct 2004 18:33:30 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.33) id 1CEVsp-0007tc-D1 for geh-help-gnu-emacs@m.gmane.org; Mon, 04 Oct 2004 12:40:19 -0400 Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!news.tele.dk!news.tele.dk!small.news.tele.dk!fu-berlin.de!uni-berlin.de!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 27 Original-X-Trace: news.uni-berlin.de C55Ig2R33ojLToxYVNMnUgYtmDqBLVBM5oUoge3dRE9cokU5mJ X-Face: 2FEFf>]>q>2iw=B6, xrUubRI>pR&Ml9=ao@P@i)L:\urd*t9M~y1^:+Y]'C0~{mAl`oQuAl \!3KEIp?*w`|bL5qr,H)LFO6Q=qx~iH4DN; i"; /yuIsqbLLCh/!U#X[S~(5eZ41to5f%E@'ELIi$t^ Vc\LWP@J5p^rst0+('>Er0=^1{]M9!p?&:\z]|;&=NP3AhB!B_bi^]Pfkw User-Agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3.50 (gnu/linux) Cancel-Lock: sha1:6EIr+TO7EV8k5sKJ7igyQ3uBZaw= Original-Xref: shelby.stanford.edu gnu.emacs.help:125689 Original-To: help-gnu-emacs@gnu.org 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: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: main.gmane.org gmane.emacs.help:21049 X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:21049 Kevin Rodgers writes: > As someone else pointed out, the solution is to use the fset function > instead of the macro: > > (defmacro define-tex-symbol (name) > `(fset (intern (concat "tex-" ,name)) > (lambda () > (interactive) > (insert "\\" ,name)))) It is completely pointless to use a macro here. The only effect you gain by it is side effects from multiple evaluation of `name'. Just use defun here: you can't hope to gain much efficiency from avoiding just such a tiny bit of expansion in an otherwise complicated operation. To wit: (defun define-tex-symbol (name) (fset (intern (concat "tex-" name)) `(lambda () (interactive) (insert "\\" ,name)))) If you really want the "optimization", use defsubst instead of defun. -- David Kastrup, Kriemhildstr. 15, 44793 Bochum