From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.help Subject: Re: How to read an integer from the minibuffer Date: Thu, 11 Nov 2021 10:25:02 +0000 Message-ID: References: <87ee7nqomk.fsf@mbork.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9790"; mail-complaints-to="usenet@ciao.gmane.io" Cc: help-gnu-emacs@gnu.org To: Marcin Borkowski Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Nov 11 11:25:44 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 1ml7H5-0002IM-NS for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 11 Nov 2021 11:25:44 +0100 Original-Received: from localhost ([::1]:39160 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ml7H3-000572-Mb for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 11 Nov 2021 05:25:41 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:40424) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ml7Ga-00056u-6E for help-gnu-emacs@gnu.org; Thu, 11 Nov 2021 05:25:12 -0500 Original-Received: from heytings.org ([95.142.160.155]:34096) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ml7GX-0003ql-UU for help-gnu-emacs@gnu.org; Thu, 11 Nov 2021 05:25:11 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20210101; t=1636626304; bh=iqL5DISDVfhj+Z3feElV2t+y5tLXFIUoewnqnLIomD8=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=bia5C5DA+qPxA7c6H+xnVWb+qZBRf1uIUDMF6n/TcwC2o4T4YUduElask0QBBGr5P kECX3gjR3Y3m4PrFqH4BJ2J07nE1Jdt8T5rtx/4+ekCCGqaNL06udFFpHH9yl+tS7C WopsFOyyLyoPq9eJVADlsC0ZhlJTV54rzO6l5OHeGFJuTzwPDEbWFypbz84ZYrSPa3 RPtoPiXJKo6C+u6fntgOHtIc1HYPVlHn/PlGybsCOBTSXQd0SwHdIqBAmE4SXUWRJz BiMpVlLHQCuylZGjtdvZ3qa+e6uDoKLuGOAPTOLPAdGfL7GeV96gMwEheBhfZi6udb MgX+sNWwt6sDA== In-Reply-To: <87ee7nqomk.fsf@mbork.pl> Received-SPF: pass client-ip=95.142.160.155; envelope-from=gregory@heytings.org; helo=heytings.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, 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: 2.1.29 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:134476 Archived-At: > > I'd like to read an integer (or something else e.g. matching a regex) > from a minibuffer. Basically, I'm after a version of `read-string', but > either allowing only some characters, or accepting only input matching > some regex (possibly both). > > How do I do that? One way would be to use `read-from-minibuffer' with a > suitable keymap, but that seems slightly low-level. If that is the way > to go, is there a good way to set up a keymap so that nothing except > some specified characters are self-inserting? IOW, is `suppress-keymap' > the way to go or is there some other way? > (defun restricted-read-from-minibuffer (prompt allowed-chars) "Read a string from the minibuffer, prompting with PROMPT. The only allowed characters are those in the string ALLOWED-CHARS." (let ((m (make-keymap))) (define-key m [t] #'ignore) (define-key m (kbd "RET") #'exit-minibuffer) (define-key m (kbd "") #'exit-minibuffer) (define-key m (kbd "C-j") #'exit-minibuffer) (define-key m (kbd "C-g") #'abort-minibuffers) (dolist (c (split-string allowed-chars "" t)) (define-key m c #'self-insert-command)) (read-from-minibuffer prompt nil m)))