From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Elisp string function question Date: Sun, 20 Jun 2021 03:15:17 +0200 Message-ID: <87czsh49qy.fsf@zoho.eu> References: <20210618121807.xsjdbv4ouqbv4uex.ref@Ergus> <20210618121807.xsjdbv4ouqbv4uex@Ergus> <87pmwi50hn.fsf@zoho.eu> <87h7ht4a11.fsf@zoho.eu> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16505"; 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:Bgvcp1WsacU1l22jcMoX2tBdjFE= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Jun 20 03:16:16 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 1lum4N-00043K-4N for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 20 Jun 2021 03:16:15 +0200 Original-Received: from localhost ([::1]:55898 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lum4L-0003rq-J6 for geh-help-gnu-emacs@m.gmane-mx.org; Sat, 19 Jun 2021 21:16:13 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53224) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lum3d-0003re-UW for help-gnu-emacs@gnu.org; Sat, 19 Jun 2021 21:15:29 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:60704) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lum3a-0004kq-Qo for help-gnu-emacs@gnu.org; Sat, 19 Jun 2021 21:15:29 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1lum3Y-00034o-LY for help-gnu-emacs@gnu.org; Sun, 20 Jun 2021 03:15:24 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never 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:131059 Archived-At: >> >> Thanks for mentioning `string-empty-p' BTW, didn't know of >> that, now I can remove my own `empty-string-p' :P >> >> (which shows the same bahavior BTW) > > No, it doesn't, why did I ever remove it? I thought it was the > same as this but it wasn't, (string-empty-p nil) should be > t according to the way I've been using it! Christ, no wonder > nothing works all of a sudden. What I want is (defun string-data-p (str) (and (stringp str) (not (string= str "")) )) Is it a string? Does it have data? nil and "" is (here) just as useless. But the funny thing is, my "empty-string-p" looked like `string-empty-p', that's why I replaced the calls to that instead. Then everything broke. So I guess it didn't look quite like that after all... -- underground experts united https://dataswamp.org/~incal