From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Drew Adams" Newsgroups: gmane.emacs.help Subject: RE: About self-referential object Date: Fri, 4 Jan 2013 15:47:42 -0800 Message-ID: <6BE86BEE127A4EDA936B8C0349D595B6@us.oracle.com> References: <20130105073253.c6c5000dfd1a9de6a7c6770c@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1357343287 24333 80.91.229.3 (4 Jan 2013 23:48:07 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 4 Jan 2013 23:48:07 +0000 (UTC) To: "'Xue Fuqiao'" , Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Jan 05 00:48:21 2013 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1TrGzs-00056y-0H for geh-help-gnu-emacs@m.gmane.org; Sat, 05 Jan 2013 00:48:20 +0100 Original-Received: from localhost ([::1]:55999 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TrGzc-0008V0-Oa for geh-help-gnu-emacs@m.gmane.org; Fri, 04 Jan 2013 18:48:04 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:52658) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TrGzV-0008Uj-U1 for help-gnu-emacs@gnu.org; Fri, 04 Jan 2013 18:47:59 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TrGzO-0002mX-Nr for help-gnu-emacs@gnu.org; Fri, 04 Jan 2013 18:47:57 -0500 Original-Received: from userp1040.oracle.com ([156.151.31.81]:30758) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TrGzO-0002mM-FS for help-gnu-emacs@gnu.org; Fri, 04 Jan 2013 18:47:50 -0500 Original-Received: from ucsinet22.oracle.com (ucsinet22.oracle.com [156.151.31.94]) by userp1040.oracle.com (Sentrion-MTA-4.2.2/Sentrion-MTA-4.2.2) with ESMTP id r04NlmpP027061 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 4 Jan 2013 23:47:48 GMT Original-Received: from acsmt356.oracle.com (acsmt356.oracle.com [141.146.40.156]) by ucsinet22.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id r04NllG2026648 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 4 Jan 2013 23:47:47 GMT Original-Received: from abhmt102.oracle.com (abhmt102.oracle.com [141.146.116.54]) by acsmt356.oracle.com (8.12.11.20060308/8.12.11) with ESMTP id r04NllLr027609; Fri, 4 Jan 2013 17:47:47 -0600 Original-Received: from dradamslap1 (/71.202.147.44) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 04 Jan 2013 15:47:47 -0800 X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <20130105073253.c6c5000dfd1a9de6a7c6770c@gmail.com> Thread-Index: Ac3q09vJrGEuQOLLT++n5VqpyZ68yQAAVlFg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-Source-IP: ucsinet22.oracle.com [156.151.31.94] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 156.151.31.81 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 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 Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:88451 Archived-At: > (setq foo '(nil)) => (nil) > (setcar foo foo) => (#0) > > It is an infinite recursion. What does the `#0' mean here? The Elisp manual is your friend. There are no doubt several ways to look this up. Start with `i' usually, which uses the indexes. If you don't find what you want using `i' then try searching: `C-s #0' finds an answer immediately in this case, in node `Output Function'. If you can find what you want by means other than using the indexes (`i'), consider reporting an Emacs bug to improve the index, explaining how you tried to find it.