From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.devel Subject: Re: Can watermarking Unicode text using invisible differences sneak through Emacs, or can Emacs detect it? Date: Wed, 26 Jan 2022 09:20:09 +0100 Message-ID: <87ee4uykli.fsf@igel.home> References: <87sftk49ih.fsf@yahoo.com> <837dawt0h4.fsf@gnu.org> <838rv9plyf.fsf@gnu.org> <837dasntoj.fsf@gnu.org> <834k5tl4a9.fsf@gnu.org> <87mtjkt6m9.fsf@gmail.com> <83ilu8htws.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="34373"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux) Cc: psainty@orcon.net.nz, luangruo@yahoo.com, Eli Zaretskii , kevin.legouguec@gmail.com, emacs-devel@gnu.org To: Richard Stallman Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Jan 26 09:22:44 2022 Return-path: Envelope-to: ged-emacs-devel@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 1nCdZj-0008gp-FW for ged-emacs-devel@m.gmane-mx.org; Wed, 26 Jan 2022 09:22:43 +0100 Original-Received: from localhost ([::1]:54722 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nCdZh-0004cH-IB for ged-emacs-devel@m.gmane-mx.org; Wed, 26 Jan 2022 03:22:41 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:47396) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nCdXQ-0003kv-1t for emacs-devel@gnu.org; Wed, 26 Jan 2022 03:20:20 -0500 Original-Received: from mail-out.m-online.net ([212.18.0.10]:39858) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nCdXN-0007ea-TR; Wed, 26 Jan 2022 03:20:19 -0500 Original-Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4JkGqb2FJyz1sYfM; Wed, 26 Jan 2022 09:20:11 +0100 (CET) Original-Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4JkGqb1mVbz1qqkD; Wed, 26 Jan 2022 09:20:11 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id xGOhoWR8N1rA; Wed, 26 Jan 2022 09:20:10 +0100 (CET) X-Auth-Info: FRPQVdltKOV0OuTTEqorT7HIh4W5Qm3NH31T8t3g7TbCjIwd/GahTpNMdmVhuHaj Original-Received: from igel.home (ppp-46-244-190-113.dynamic.mnet-online.de [46.244.190.113]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Wed, 26 Jan 2022 09:20:10 +0100 (CET) Original-Received: by igel.home (Postfix, from userid 1000) id CC0562C36ED; Wed, 26 Jan 2022 09:20:09 +0100 (CET) X-Yow: .. here I am in 53 B.C. and all I want is a dill pickle!! In-Reply-To: (Richard Stallman's message of "Tue, 25 Jan 2022 22:39:17 -0500") Received-SPF: pass client-ip=212.18.0.10; envelope-from=whitebox@nefkom.net; helo=mail-out.m-online.net X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:285415 Archived-At: On Jan 25 2022, Richard Stallman wrote: > I didn't know that there were two different kinds of ligatures in Unicode. It is misleading at best to call them ligatures. They are just random Unicode code points that happen to be absent from the font that the terminal uses. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."