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: How to read an integer from the minibuffer Date: Tue, 16 Nov 2021 10:38:23 +0100 Message-ID: <87y25o1lv4.fsf@zoho.eu> References: <87ee7nqomk.fsf@mbork.pl> <875ysxrj0v.fsf@mbork.pl> <877dd835cp.fsf@zoho.eu> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23922"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:5rOu7r3zNBIaLA6v+w16duEjE7Q= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Nov 16 10:39:24 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 1mmuvz-0005yt-Ao for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 16 Nov 2021 10:39:23 +0100 Original-Received: from localhost ([::1]:54084 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mmuvx-0000wU-LC for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 16 Nov 2021 04:39:21 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:42054) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mmuvE-0000wL-L3 for help-gnu-emacs@gnu.org; Tue, 16 Nov 2021 04:38:36 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]:56162) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mmuvC-0002i1-8j for help-gnu-emacs@gnu.org; Tue, 16 Nov 2021 04:38:36 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mmuv9-000514-Nd for help-gnu-emacs@gnu.org; Tue, 16 Nov 2021 10:38:31 +0100 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: 2.1.29 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:134629 Archived-At: Yuri Khan wrote: > I was going to suggest piggybacking on the JSON parser, but > it has the same bug: > > M-: (json-read-from-string "123foo") > ⇒ 123 (#o173, #x7b, ?\{) > > Fortunately, json-read-from-string is simple enough that you can copy > and modify it: > > -(defun json-read-from-string (string) > +(defun json-read-from-string-strict (string) > "Read the JSON object contained in STRING and return it." > (with-temp-buffer > (insert string) > (goto-char (point-min)) > - (json-read))) > + (prog1 (json-read) > + (unless (eobp) (error "Trailing garbage"))))) > > You still get some whitespace skipping though. (defun string-to-number-number (str) (let ((s (string-trim str))) (if (string-match "^[+-]\\{0,1\\}\\(0+\\|0*\\.0+\\)$" s) 0 (let ((num (string-to-number s))) (when (and (not (zerop num)) (string-match "^[+-]\\{0,1\\}\\([[:digit:]]+\\|[[:digit:]]*\\.[[:digit:]]+\\)$" s) ) num) )))) ;; (string-to-number-number " 10") ; 10 ;; (string-to-number-number " 1.5") ; 1.5 ;; (string-to-number-number " +0") ; 0 ;; (string-to-number-number " 0") ; 0 ;; (string-to-number-number " -0.0") ; 0 ;; (string-to-number-number " -1.5") ; 1.5 ;; (string-to-number-number "-10") ; -10 ;; (string-to-number-number "123this used to work") ; nil ;; (string-to-number-number "not a number") ; nil -- underground experts united https://dataswamp.org/~incal