From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.devel Subject: Re: Unicode confusables and reordering characters considered harmful, a simple solution Date: Wed, 03 Nov 2021 19:02:19 +0000 Message-ID: <11d5fecb44ffbf6b7dd1@heytings.org> References: <875ytag0hb.fsf@yahoo.com> <87zgqmd5np.fsf@mat.ucm.es> <83wnlqk3rn.fsf@gnu.org> <72dd5c2a-42c7-b12e-05ed-e93adbd89727@gmail.com> <83ilxajyhw.fsf@gnu.org> <83fssejxf8.fsf@gnu.org> <835ytajsv2.fsf@gnu.org> <831r3yjqo9.fsf@gnu.org> <83v91aibe7.fsf@gnu.org> <87o872s0wf.fsf_-_@db48x.net> <83lf25gm1j.fsf@gnu.org> <86h7ctyupr.fsf@mail.linkov.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="40939"; mail-complaints-to="usenet@ciao.gmane.io" Cc: cpitclaudel@gmail.com, stefan@marxist.se, emacs-devel@gnu.org, db48x@db48x.net, monnier@iro.umontreal.ca, Eli Zaretskii , Yuri Khan To: Juri Linkov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Nov 03 20:03:24 2021 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 1miLXg-000ATR-Dn for ged-emacs-devel@m.gmane-mx.org; Wed, 03 Nov 2021 20:03:24 +0100 Original-Received: from localhost ([::1]:35822 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1miLXf-0000dG-Br for ged-emacs-devel@m.gmane-mx.org; Wed, 03 Nov 2021 15:03:23 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:40468) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1miLWj-0008Jz-4u for emacs-devel@gnu.org; Wed, 03 Nov 2021 15:02:25 -0400 Original-Received: from heytings.org ([95.142.160.155]:51526) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1miLWh-0005XR-Bg; Wed, 03 Nov 2021 15:02:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20210101; t=1635966140; bh=TLoVNK81dcM7CxOVIj55yAXFG5CBJhruYE8CPvGpkxQ=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=DHXpYlBcjdamWGf0AxPXyty3Tx+JoyQ9Ju+NYGjhzom20zBS9hGAB8xeQ6FaXQgKL lg2FU7NX2VIiPcL0whwW+ukhl7i/6EcTitxxWTvQMmuOSP1aumEvEw0cGJJ+RhsXyI l1uUajjui9l9q/DOmGL2bJt9vW9EDRsFkPCDBQbuFy4AR6RnRLO4Zc2zrApGEpU5EF a+yPgqC37CgW4UOyi6Xq7kghPAKZlkZA+Bh9nDtXsd7nph/zOV3TlVgBrmblfnVB2S cMVL/f76i4QOdXHGafTOMgrhi6rqmwNUBXSAbOjR2+TpEkF9ME10LT1BoA6lxgBMWN RCBbbDY3aKoNg== In-Reply-To: <86h7ctyupr.fsf@mail.linkov.net> Received-SPF: pass client-ip=95.142.160.155; envelope-from=gregory@heytings.org; helo=heytings.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-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:278607 Archived-At: >> Anyway, if one wants to be able to highlight certain characters on >> display, one could also use highlight-regexp, I think. > > Or markchars.el with markchars-what customized to markchars-confusables. > Neither would work AFAICS, because these characters are glyphless. Highlighting a glyphless character will not make it more visible.