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.bugs Subject: bug#51733: 27.1; Detect impossible email addresses better Date: Wed, 10 Nov 2021 15:39:48 +0200 Message-ID: <834k8k3za3.fsf@gnu.org> References: <87czn8etuz.7.fsf@jidanni.org> <87tugkkfid.fsf@gnus.org> <83fss44rbn.fsf@gnu.org> <875yt0ipre.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="8267"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 51733@debbugs.gnu.org, jidanni@jidanni.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Nov 10 14:48:29 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1mknxl-0001yk-IV for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 10 Nov 2021 14:48:29 +0100 Original-Received: from localhost ([::1]:36412 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mknxk-0003Rx-H4 for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 10 Nov 2021 08:48:28 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:34726) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mknqY-0002fn-LZ for bug-gnu-emacs@gnu.org; Wed, 10 Nov 2021 08:41:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:54066) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mknqY-0003Tf-C0 for bug-gnu-emacs@gnu.org; Wed, 10 Nov 2021 08:41:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mknqY-0006Rp-91; Wed, 10 Nov 2021 08:41:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org, bugs@gnus.org Resent-Date: Wed, 10 Nov 2021 13:41:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 51733 X-GNU-PR-Package: emacs,gnus Original-Received: via spool by 51733-submit@debbugs.gnu.org id=B51733.163655161424717 (code B ref 51733); Wed, 10 Nov 2021 13:41:02 +0000 Original-Received: (at 51733) by debbugs.gnu.org; 10 Nov 2021 13:40:14 +0000 Original-Received: from localhost ([127.0.0.1]:37378 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mknpm-0006Qa-5P for submit@debbugs.gnu.org; Wed, 10 Nov 2021 08:40:14 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:33500) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mknpi-0006QB-Jk for 51733@debbugs.gnu.org; Wed, 10 Nov 2021 08:40:12 -0500 Original-Received: from [2001:470:142:3::e] (port=58692 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 1mknpR-0003AK-Tk; Wed, 10 Nov 2021 08:39:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=NbshMy5BjbvXDzy5ZhQT30pVSiw7FPNtFCucKe3DxVs=; b=L6bThb4/bkM/ LNPSE51u/ubU2tsmu5xRmS7OBssHPS/WdVU7NHPBGACjwfqfbW+uGr3gSUBTliwjDmP3C2AFKIiX4 LsIsCD1e2+qfaXq+95VUKwhe5LevzBnYepK/DOm+kbKtqJZUO3TFUc4k+iXp74Vyo4G/ywXBLCVeX NPbuzTcozN/GkjQDar9LNkx0OY+oPVG8/bIK+D+Vr97Yp69zzGHDc8FFoXF5Y/0iFnbx5vOhQLqNK 0FxwI13+Ihrln0kIhFPU/Dkl9e+rq5MCFaf8khyLnNy1i7joGxkIkW11M8kRaXgMpUb+I8UBp/TMb dgQkvF45dLkTyeXPjVhD7Q==; Original-Received: from [87.69.77.57] (port=3747 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 1mknpR-00022Y-Cb; Wed, 10 Nov 2021 08:39:53 -0500 In-Reply-To: <875yt0ipre.fsf@gnus.org> (message from Lars Ingebrigtsen on Wed, 10 Nov 2021 05:44:05 +0100) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:219547 Archived-At: > From: Lars Ingebrigtsen > Cc: jidanni@jidanni.org, 51733@debbugs.gnu.org > Date: Wed, 10 Nov 2021 05:44:05 +0100 > > Eli Zaretskii writes: > > >> Do we have a predicate somewhere that says whether a string is suspicious > >> based on confusables and r2l markers and stuff? > > > > No. We have the infrastructure for detecting the reordering, though. > > I thought I vaguely remembered you writing something in this area in > conjunction with some URL stuff some years back, but I don't recall what > happened to it. I did write it, that's bidi-find-overridden-directionality, which we have since Emacs 25. That is what I meant by "detecting the reordering". Detecting confusables in general is a much broader issue, not limited to bidi reordering alone. > Hm... and there's uni-confusables in GNU ELPA? Should we have that in > core instead? (Or in addition.) We could add that to core, but currently uni-confusables just gives you a char-table which Lisp programs can use to find out whether a given character is a potential confusable. We need applications layers above that, ideally implementing at least part of the recommendations in Unicode's UTS #39 (https://www.unicode.org/reports/tr39/). We should probably first discuss what we want to implement from there, though. How about chiming in to emacs-devel thread "Unicode confusables considered harmful", where Vasilij Schneidermann already asked what we think should be done about these cases?