From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.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: compute ISBN-10, char-to-int? Date: Mon, 09 Sep 2019 19:47:23 +0200 Message-ID: <86a7bdgy50.fsf@zoho.eu> References: <868sr3le7s.fsf@zoho.eu> <20190905064437.GA18252@tuxteam.de> <83a7bi7gzs.fsf@gnu.org> <20190905190336.GB9015@tuxteam.de> Reply-To: Emanuel Berg Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="224506"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Mon Sep 09 19:47:52 2019 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1i7NlX-000wFA-Ni for geh-help-gnu-emacs@m.gmane.org; Mon, 09 Sep 2019 19:47:51 +0200 Original-Received: from localhost ([::1]:59642 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i7NlW-00006T-2D for geh-help-gnu-emacs@m.gmane.org; Mon, 09 Sep 2019 13:47:50 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52244) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i7NlF-000053-MP for help-gnu-emacs@gnu.org; Mon, 09 Sep 2019 13:47:34 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i7NlD-0007Rp-In for help-gnu-emacs@gnu.org; Mon, 09 Sep 2019 13:47:33 -0400 Original-Received: from 195-159-176-226.customer.powertech.no ([195.159.176.226]:48342 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i7NlD-0007R3-C8 for help-gnu-emacs@gnu.org; Mon, 09 Sep 2019 13:47:31 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.89) (envelope-from ) id 1i7NlB-000vqG-HU for help-gnu-emacs@gnu.org; Mon, 09 Sep 2019 19:47:29 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never Cancel-Lock: sha1:6c5iso/IBPoYB2RqRfxQRReU2CY= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 195.159.176.226 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.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:121491 Archived-At: Stefan Monnier wrote: > (- c ?0) and (+ n ?0) work not just with > Unicode code points, but with code points in > any character set that is sane enough to put > the digits from 0 to 9 consecutively in this > order. That's the case in ASCII, EBCDIC, and > all other charsets I know. EBCDIC = Extended Binary-Coded Decimal Interchange Code http://www.barrcentral.com/help/3270/appendix_b._ascii_and_ebcdic_tables.htm?sa=X&ved=2ahUKEwiTptvPpcTkAhWqpIsKHVtRCRgQ9QF6BAgLEAI Seems to have something to do with IBM... -- underground experts united http://user.it.uu.se/~embe8573 https://dataswamp.org/~incal