From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: same data appears twice, interactive then function body Date: Tue, 15 Dec 2020 21:44:34 -0500 Message-ID: References: <87y2hya6i1.fsf@zoho.eu> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6408"; 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:inrwsLmWwZEcHQIp31yBV3DsqwA= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Dec 16 03:45:07 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 1kpMoM-0001Yi-WA for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 16 Dec 2020 03:45:07 +0100 Original-Received: from localhost ([::1]:56554 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kpMoM-00060m-1k for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 15 Dec 2020 21:45:06 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:35084) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kpMo1-00060d-Er for help-gnu-emacs@gnu.org; Tue, 15 Dec 2020 21:44:45 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]:42030) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kpMo0-0005we-3d for help-gnu-emacs@gnu.org; Tue, 15 Dec 2020 21:44:45 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1kpMnx-00017T-TC for help-gnu-emacs@gnu.org; Wed, 16 Dec 2020 03:44:41 +0100 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:126389 Archived-At: > Check out this code, how do you avoid having 80 appear twice? > (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 80)) > [...] 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, Stefan