From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.help Subject: Re: How many parameters does an elisp function take? Date: Wed, 16 Feb 2005 13:45:31 -0700 Message-ID: <37hpndF5cn882U1@individual.net> References: <9e90vc.o7.ln@acm.acm> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1108586647 9858 80.91.229.2 (16 Feb 2005 20:44:07 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 16 Feb 2005 20:44:07 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Feb 16 21:44:07 2005 Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1D1W1V-0007oi-08 for geh-help-gnu-emacs@m.gmane.org; Wed, 16 Feb 2005 21:43:49 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1D1WHV-0000E1-BR for geh-help-gnu-emacs@m.gmane.org; Wed, 16 Feb 2005 16:00:21 -0500 Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!newsmi-us.news.garr.it!newsmi-eu.news.garr.it!NewsITBone-GARR!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 13 Original-X-Trace: individual.net tkYHv8i0vGvOpIrBJ5oHxQpk6HPyxLSbr+4gaJcRaGYMdQ+zQ= User-Agent: Mozilla Thunderbird 0.9 (X11/20041105) X-Accept-Language: en-us, en In-Reply-To: <9e90vc.o7.ln@acm.acm> Original-Xref: shelby.stanford.edu gnu.emacs.help:128607 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: , 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 X-MailScanner-To: geh-help-gnu-emacs@m.gmane.org Xref: main.gmane.org gmane.emacs.help:24138 X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:24138 Alan Mackenzie wrote: > Is it possible to determine at run time how many parameters an elisp > function takes? For example, I'd like to write something like: > > (how-many-params 'null) > > and have it evaluate to 1. Or something like that. Together with some > reasonable convention for indicating &optional and &rest arguments. I would start with eldoc-function-arglist. -- Kevin Rodgers