From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Jean Louis Newsgroups: gmane.emacs.help Subject: Re: Is there any difference between `equal' and `string=' for strings? Date: Sat, 21 Aug 2021 12:08:48 +0300 Message-ID: References: <875yw2vxqh.fsf@mbork.pl> <87v941domi.fsf@zoho.eu> <87tujkd46u.fsf@zoho.eu> <87lf4wd3dz.fsf@zoho.eu> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13436"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.0.7+183 (3d24855) (2021-05-28) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sat Aug 21 11:10:32 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mHN1M-0003HP-0a for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 21 Aug 2021 11:10:32 +0200 Original-Received: from localhost ([::1]:51970 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mHN1K-0001we-R5 for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 21 Aug 2021 05:10:30 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59102) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mHN0q-0001tf-Ub for help-gnu-emacs@gnu.org; Sat, 21 Aug 2021 05:10:00 -0400 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:54061) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mHN0p-0006CY-Dp for help-gnu-emacs@gnu.org; Sat, 21 Aug 2021 05:10:00 -0400 Original-Received: from localhost ([::ffff:154.230.162.245]) (AUTH: PLAIN admin, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 0000000000069CB1.000000006120C2E6.00004A73; Sat, 21 Aug 2021 02:09:57 -0700 Mail-Followup-To: help-gnu-emacs@gnu.org Content-Disposition: inline In-Reply-To: <87lf4wd3dz.fsf@zoho.eu> Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:132644 Archived-At: * Emanuel Berg via Users list for the GNU Emacs text editor [2021-08-20 09:42]: > >> (string= 'hi 'hi) -> t > > > > With symbols their "print names" are used, you can get that > > with > > > > (symbol-name 'hi) ; "hi" > > The reason for this, I think, is for example so one can do > a `defun' like this > (defun do-something (method) (when (string= method "now") (message "I'm all over it") )) > Then one can do either > > (do-something "now") > > or > > (do-something 'now) That is something new to me. I would not ever use it that way, but you discovered it. It looks like incorrect use as (type-of 'now) ⇒ symbol and is then compared as string. I would do: (setq now "Not now") ⇒ "Not now" (do-something now) ⇒ nil -- Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns In support of Richard M. Stallman https://stallmansupport.org/