From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: string> missing? Date: Thu, 04 Jun 2015 11:33:44 -0400 Message-ID: References: <87oakxkvqw.fsf@petton.fr> <83zj4grgkc.fsf@gnu.org> <87sia8n8b5.fsf@petton.fr> <87zj4gu821.fsf@gnu.org> <83sia8rdkm.fsf@gnu.org> <83pp5crbfd.fsf@gnu.org> <83mw0gr4eh.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1433433487 3376 80.91.229.3 (4 Jun 2015 15:58:07 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 4 Jun 2015 15:58:07 +0000 (UTC) Cc: emacs-devel To: Thibaut Verron Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Jun 04 17:57:56 2015 Return-path: Envelope-to: ged-emacs-devel@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 1Z0XWV-0005rf-2M for ged-emacs-devel@m.gmane.org; Thu, 04 Jun 2015 17:57:39 +0200 Original-Received: from localhost ([::1]:43000 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z0XWU-0003xi-Hp for ged-emacs-devel@m.gmane.org; Thu, 04 Jun 2015 11:57:38 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47693) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z0XWQ-0003xN-Sj for emacs-devel@gnu.org; Thu, 04 Jun 2015 11:57:35 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z0XWN-00057N-N2 for emacs-devel@gnu.org; Thu, 04 Jun 2015 11:57:34 -0400 Original-Received: from mercure.iro.umontreal.ca ([132.204.24.67]:46148) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z0XWN-00057G-IQ for emacs-devel@gnu.org; Thu, 04 Jun 2015 11:57:31 -0400 Original-Received: from hidalgo.iro.umontreal.ca (hidalgo.iro.umontreal.ca [132.204.27.50]) by mercure.iro.umontreal.ca (Postfix) with ESMTP id 76C8E9C219; Thu, 4 Jun 2015 11:34:12 -0400 (EDT) Original-Received: from lechon.iro.umontreal.ca (lechon.iro.umontreal.ca [132.204.27.242]) by hidalgo.iro.umontreal.ca (Postfix) with ESMTP id 8476F1E5B8C; Thu, 4 Jun 2015 11:33:44 -0400 (EDT) Original-Received: by lechon.iro.umontreal.ca (Postfix, from userid 20848) id 5B08BB416C; Thu, 4 Jun 2015 11:33:44 -0400 (EDT) In-Reply-To: (Thibaut Verron's message of "Thu, 4 Jun 2015 07:30:08 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) X-DIRO-MailScanner-Information: Please contact the ISP for more information X-DIRO-MailScanner: Found to be clean X-DIRO-MailScanner-SpamCheck: n'est pas un polluriel, SpamAssassin (score=-2.82, requis 5, autolearn=not spam, ALL_TRUSTED -2.82, MC_TSTLAST 0.00) X-DIRO-MailScanner-From: monnier@iro.umontreal.ca X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 132.204.24.67 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:187024 Archived-At: > (setq str1 "foo") > (setq str2 "foo") > (setq str3 str1) > (= str1 str2) ;;==> *error* > (eq str1 str2) ;;==> nil > (eq str1 "foo") ;;==> nil > (eq str1 str3) ;;==> nil > (string= str1 str2) ;;==> t The "standard" equality testing in Elisp is `equal'. E.g. it's what is used by `add-to-list', `member', and `assoc'. IOW, usually you're expected to use `equal' unless you need something else. Stefan