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 09:00:43 +0100 Message-ID: <8735nw34yc.fsf@zoho.eu> References: <87ee7nqomk.fsf@mbork.pl> <874k8jz372.fsf@yahoo.com> <87czn7qhx7.fsf@mbork.pl> <87lf1o38p3.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="3295"; 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:bu1yKg1/Tp5+TZ/2r7uUIE3eG6U= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Nov 16 09:01:46 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 1mmtPW-0000dM-Nf for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 16 Nov 2021 09:01:46 +0100 Original-Received: from localhost ([::1]:47884 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mmtPV-0002hc-G5 for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 16 Nov 2021 03:01:45 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:59266) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mmtOm-0002hS-9q for help-gnu-emacs@gnu.org; Tue, 16 Nov 2021 03:01:00 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]:45262) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mmtOh-0002SA-Kd for help-gnu-emacs@gnu.org; Tue, 16 Nov 2021 03:00:58 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mmtOe-000A9x-BO for help-gnu-emacs@gnu.org; Tue, 16 Nov 2021 09:00:52 +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:134626 Archived-At: Yuri Khan wrote: >> (defun string-to-number-number (str) >> (if (string= str "0") >> 0 >> (let ((num (string-to-number str))) >> (unless (zerop num) >> num) ))) >> ;; (string-to-number-number "10") >> ;; (string-to-number-number "1.5") >> ;; (string-to-number-number "0") >> ;; (string-to-number-number "-1.5") >> ;; (string-to-number-number "-10") >> ;; (string-to-number-number "not a number") ; nil > > ‘string-to-number’ has one more deficiency — it ignores additional > non-digit characters. > > M-: (string-to-number "123foo") ; 123 I know, I don't know if this is really a problem tho ... Maybe it can even be thought of as a feature, e.g. (string-to-number "89.8 cm") ; 89.8 > You cannot build anything strict on such a lax parser. Don't know how strict we will get but if we identify and patch the singularities it will be something if not strict then at least something that is useful. But sure I think it should be changed in the C source ... -- underground experts united https://dataswamp.org/~incal