From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Can watermarking Unicode text using invisible differences sneak through Emacs, or can Emacs detect it? Date: Thu, 03 Feb 2022 11:26:21 +0200 Message-ID: <83y22s47ya.fsf@gnu.org> 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> <3E718CA2-889F-4AEE-B79C-EB3A221D1CB2@gnu.org> <83o83wc7gs.fsf@gnu.org> <8335l5brov.fsf@gnu.org> <83mtjc838i.fsf@gnu.org> <83zgna7hyd.fsf@gnu.org> <83ee4l78rw.fsf@gnu.org> <837dac5qth.fsf@gnu.org> 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="21221"; mail-complaints-to="usenet@ciao.gmane.io" Cc: psainty@orcon.net.nz, luangruo@yahoo.com, kevin.legouguec@gmail.com, rms@gnu.org, emacs-devel@gnu.org To: Yuri Khan Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Feb 03 10:32:30 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 1nFYTe-0005Og-9t for ged-emacs-devel@m.gmane-mx.org; Thu, 03 Feb 2022 10:32:30 +0100 Original-Received: from localhost ([::1]:53704 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nFYTc-00079R-KH for ged-emacs-devel@m.gmane-mx.org; Thu, 03 Feb 2022 04:32:28 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:40658) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nFYNt-0004Ng-0W for emacs-devel@gnu.org; Thu, 03 Feb 2022 04:26:34 -0500 Original-Received: from [2001:470:142:3::e] (port=58432 helo=fencepost.gnu.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nFYNm-0005Lp-Sb; Thu, 03 Feb 2022 04:26:31 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=Jx6kTd9zAmpsnsIFFSIt0oWm4ECk15eDWJFKoD8xtC4=; b=aTMq4HtSHMvfdX9S1eyo Tkyk2fZySE4nPeHsiC7BzjQ8hDacyKRsx1lKGjG5KiwiHPvU38DsXztCzg7F/I+9FDSNteFst1hBZ EXYeGOmYV0on854ojkhOEUHSfSrxF7jPiihZkyLi7vrCZpEVqWGbRAckKiu6acCBvC1swET4kxdcd 4oW4yBr6IrjmtLnA+DpYXlLT/e/r9Ve+Uav/OGEce352elZETN3Qh8Tn5+KVY7xp6UUwMh7JcKsbw SP4kKtRkp75j40+8hvSaH9CE+7rwVUoGhwLNSO82UR8TGAPH1Nmc1KDC+50K8UVzkq/oB5VYJ2Lvs PA+l0ckRfo8tpg==; Original-Received: from [87.69.77.57] (port=4805 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nFYNe-0005LY-BF; Thu, 03 Feb 2022 04:26:22 -0500 In-Reply-To: (message from Yuri Khan on Thu, 3 Feb 2022 15:16:27 +0700) 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:285838 Archived-At: > From: Yuri Khan > Date: Thu, 3 Feb 2022 15:16:27 +0700 > Cc: Richard Stallman , Phil Sainty , Po Lu , > Emacs developers , Kévin Le Gouguec > > On Thu, 3 Feb 2022 at 15:09, Eli Zaretskii wrote: > > > > Sorry, somehow I misremembered and thought the character was a with > > > macron and tilde. Was it actually a with breve and tilde? > > > Then the natural visual representations would be ă~ (a with breve, > > > then tilde) and ã˘ (a with tilde, then breve), > > > > Either one would be fine, but the former is better, I think, since ~ > > is an ASCII character, and so is universally supported. > > The ordering of diacritics on the same side of the base character is > considered significant in Unicode, so ă~ and ã˘ would be > representations of different grapheme clusters — “a with breve and > tilde” and “a with tilde and breve”, respectively. I know, but I think for an emulation it could be okay to ignore this subtlety. The real character is always available in "C-u C-x =".