From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Elisp string function question Date: Fri, 18 Jun 2021 10:43:10 -0400 Message-ID: References: <20210618121807.xsjdbv4ouqbv4uex.ref@Ergus> <20210618121807.xsjdbv4ouqbv4uex@Ergus> Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="26666"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:ohMNrfifA0POMfyBRNrGrNssSzE= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jun 18 16:44:01 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 1luFiz-0006oE-79 for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 18 Jun 2021 16:44:01 +0200 Original-Received: from localhost ([::1]:58376 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1luFiy-0006Pn-8I for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 18 Jun 2021 10:44:00 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57036) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1luFiP-0006Pe-HT for help-gnu-emacs@gnu.org; Fri, 18 Jun 2021 10:43:25 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:37508) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1luFiM-0005H8-Fu for help-gnu-emacs@gnu.org; Fri, 18 Jun 2021 10:43:25 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1luFiE-0005tZ-Lz for help-gnu-emacs@gnu.org; Fri, 18 Jun 2021 16:43:14 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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:130981 Archived-At: Ergus [2021-06-18 14:18:07] wrote: > (string-empty-p nil) returns nil. But nil is not an non-empty string. This > forces to add some extra checks when using this function. BTW, I think you're much better off just not using `string-empty-p` and just use `equal` or `string=`, which is more concise and at least as clear. Stefan