From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: compute ISBN-10, char-to-int? Date: Sat, 07 Sep 2019 13:45:35 -0400 Message-ID: References: <868sr3le7s.fsf@zoho.eu> <20190905064437.GA18252@tuxteam.de> <83a7bi7gzs.fsf@gnu.org> <20190905190336.GB9015@tuxteam.de> <83woek3twa.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="177405"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Sep 07 19:46:03 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 1i6emh-000juU-6G for geh-help-gnu-emacs@m.gmane.org; Sat, 07 Sep 2019 19:46:03 +0200 Original-Received: from localhost ([::1]:36460 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i6emg-0002PE-2U for geh-help-gnu-emacs@m.gmane.org; Sat, 07 Sep 2019 13:46:02 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38263) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i6emV-0002P8-1b for help-gnu-emacs@gnu.org; Sat, 07 Sep 2019 13:45:51 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i6emU-0004DK-75 for help-gnu-emacs@gnu.org; Sat, 07 Sep 2019 13:45:50 -0400 Original-Received: from 195-159-176-226.customer.powertech.no ([195.159.176.226]:42200 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i6emQ-00044z-36 for help-gnu-emacs@gnu.org; Sat, 07 Sep 2019 13:45:48 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.89) (envelope-from ) id 1i6emK-000jXo-Oz for help-gnu-emacs@gnu.org; Sat, 07 Sep 2019 19:45:40 +0200 X-Injected-Via-Gmane: http://gmane.org/ Cancel-Lock: sha1:4cYGyOMrskdqZKW2OkGbV35VW0I= 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:121470 Archived-At: > All true, but not really relevant to the issue at hand, because in > Emacs characters are always Unicode codepoints. That hasn't always been the case, tho: they started as basically ASCII, and then switched to some iso-2022 system (in Emacs-20) before getting to the current unicode (in Emacs-23). I must admit that it seems highly unlikely it will change in the foreseeable future, but it's always a possibility (Unicode has its shortcomings, so it's possible that we'll be using something else next century). Stefan