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: same data appears twice, interactive then function body Date: Wed, 16 Dec 2020 07:16:40 +0300 Message-ID: References: <87y2hya6i1.fsf@zoho.eu> <87tusm9z4z.fsf@zoho.eu> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="36375"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.0 (3d08634) (2020-11-07) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Dec 16 05:20:46 2020 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 1kpOIv-0009NE-Nc for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 16 Dec 2020 05:20:45 +0100 Original-Received: from localhost ([::1]:44090 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kpOIu-0004yn-Pb for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 15 Dec 2020 23:20:44 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52320) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kpOIW-0004w2-R9 for help-gnu-emacs@gnu.org; Tue, 15 Dec 2020 23:20:20 -0500 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:60525) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kpOIU-0007Ma-Lv for help-gnu-emacs@gnu.org; Tue, 15 Dec 2020 23:20:20 -0500 Original-Received: from localhost ([::ffff:197.157.0.58]) (AUTH: PLAIN securesender, TLS: TLS1.2,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 000000000001E532.000000005FD98AFF.00002375; Tue, 15 Dec 2020 21:20:15 -0700 Content-Disposition: inline In-Reply-To: <87tusm9z4z.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: 29 X-Spam_score: 2.9 X-Spam_bar: ++ X-Spam_report: (2.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_SBL_CSS=3.335, RCVD_IN_SORBS_WEB=1.5, SPF_HELO_PASS=-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:126396 Archived-At: * Emanuel Berg via Users list for the GNU Emacs text editor [2020-12-16 07:03]: > Stefan Monnier wrote: > > > Here's my take on it: > > > > (defun insert-string-centered (string &optional width) > > (interactive > > (list (read-from-minibuffer "string: ") > > (string-to-number (read-from-minibuffer "width [80]: "))) ) > > (let*((max (if (< 0 width) width (+ 42 42 -4))) > > [...] > > > > Now the question is how to avoid having 42 appear twice, > > I guess I remember from micro computers that we used division in this way to find the center. (defun insert-centered-text (text &optional width) (interactive "MText: ") (let* ((width (or width (window-text-width))) (length (length (string-trim text))) (pos (/ (- width length) 2))) (move-to-column pos t) (insert text) (insert "\n")))