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: comparing symbols coming from gensym? Date: Wed, 24 Aug 2005 08:48:12 -0700 Message-ID: References: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1124900931 28151 80.91.229.2 (24 Aug 2005 16:28:51 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 24 Aug 2005 16:28:51 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Aug 24 18:28:49 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1E7xzp-0000mP-Mg for geh-help-gnu-emacs@m.gmane.org; Wed, 24 Aug 2005 18:21:01 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1E7y3f-0007aI-BA for geh-help-gnu-emacs@m.gmane.org; Wed, 24 Aug 2005 12:24:59 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1E7xvw-0003RJ-Az for help-gnu-emacs@gnu.org; Wed, 24 Aug 2005 12:17:00 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1E7xqd-0001k0-35 for help-gnu-emacs@gnu.org; Wed, 24 Aug 2005 12:11:33 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1E7xqZ-0001Is-Dw for help-gnu-emacs@gnu.org; Wed, 24 Aug 2005 12:11:27 -0400 Original-Received: from [141.146.126.231] (helo=agminet04.oracle.com) by monty-python.gnu.org with esmtp (TLS-1.0:DHE_RSA_3DES_EDE_CBC_SHA:24) (Exim 4.34) id 1E7xVC-0003Lx-FB for help-gnu-emacs@gnu.org; Wed, 24 Aug 2005 11:49:22 -0400 Original-Received: from rgmsgw301.us.oracle.com (rgmsgw301.us.oracle.com [138.1.186.50]) by agminet04.oracle.com (Switch-3.1.7/Switch-3.1.7) with ESMTP id j7OFmDQG015185; Wed, 24 Aug 2005 10:48:14 -0500 Original-Received: from rgmsgw301.us.oracle.com (localhost [127.0.0.1]) by rgmsgw301.us.oracle.com (Switch-3.1.7/Switch-3.1.7) with ESMTP id j7OFmDSj025607; Wed, 24 Aug 2005 09:48:13 -0600 Original-Received: from dradamslap (dradams-lap.us.oracle.com [130.35.177.126]) by rgmsgw301.us.oracle.com (Switch-3.1.7/Switch-3.1.7) with SMTP id j7OFmChQ025602 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO); Wed, 24 Aug 2005 09:48:12 -0600 Original-To: "Joe Corneli" , "help-gnu-emacs" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) In-reply-to: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1506 Importance: Normal X-Brightmail-Tracker: AAAAAQAAAAI= X-Whitelist: TRUE 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:28959 Archived-At: Why is it that (setq a (gensym)) ;=> G2007 a ;=> G2007 (equal a 'G2007) ;=> nil while (setq a 'foo) ;=> foo a ;=> foo (equal a 'foo) ;=> t Perhaps because gensym, like make-symbol, doesn't intern the symbol it creates? The reader interns `foo' in (setq a 'foo). So, they are different symbols: one is interned in obarray; the other is an uninterned symbol.