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#20140: 24.4; M17n shaper output rejected Date: Wed, 16 Feb 2022 15:15:46 +0200 Message-ID: <83a6er2br1.fsf@gnu.org> References: <20150318222040.4066e6e9@JRWUBU2> <87r18jk5nr.fsf@gnus.org> <83v8xv2icg.fsf@gnu.org> <20220205225251.08a0faab@JRWUBU2> <83sfsmpmxb.fsf@gnu.org> <20220213211152.03e2990a@JRWUBU2> <83leydpok0.fsf@gnu.org> <20220214232623.30534d5a@JRWUBU2> <83wnhw2nxy.fsf@gnu.org> <20220215210605.1c41c1b2@JRWUBU2> 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="34663"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 20140@debbugs.gnu.org, larsi@gnus.org To: Richard Wordingham Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Feb 16 14:20:08 2022 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 1nKKE3-0008pa-UI for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 16 Feb 2022 14:20:08 +0100 Original-Received: from localhost ([::1]:40430 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nKKE2-0002uf-Qc for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 16 Feb 2022 08:20:06 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:42396) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nKKA7-0000hY-Vk for bug-gnu-emacs@gnu.org; Wed, 16 Feb 2022 08:16:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:53864) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nKKA6-0000AY-Ap for bug-gnu-emacs@gnu.org; Wed, 16 Feb 2022 08:16:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1nKKA6-0007QZ-4l for bug-gnu-emacs@gnu.org; Wed, 16 Feb 2022 08:16:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 16 Feb 2022 13:16:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 20140 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 20140-submit@debbugs.gnu.org id=B20140.164501735028531 (code B ref 20140); Wed, 16 Feb 2022 13:16:02 +0000 Original-Received: (at 20140) by debbugs.gnu.org; 16 Feb 2022 13:15:50 +0000 Original-Received: from localhost ([127.0.0.1]:47761 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nKK9u-0007Q7-Ce for submit@debbugs.gnu.org; Wed, 16 Feb 2022 08:15:50 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:35694) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nKK9s-0007Pv-E3 for 20140@debbugs.gnu.org; Wed, 16 Feb 2022 08:15:49 -0500 Original-Received: from [2001:470:142:3::e] (port=52196 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 1nKK9l-00009g-Um; Wed, 16 Feb 2022 08:15:42 -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=6Lzpu3Xbo1Z2Y1qEQeNA+FtzZZew0IbN+/X3uILvxu8=; b=hetOrLyEkN17EixFePob tibY+vhZoYMLCVzHNOP+Pt5a8X7PLpz4heGauz1zc4QG8x72M4kMNYBOQ78pBx00/B9hFnUv+n/PF 7dpmVRzpbWNTKpu+840uD7HA6Iqq8qDIig950wjQLAovuUIbY4dbMgI8hBtONXOnOQD4WVDCwP0El 2RAbTvwvaFp1oF+Zc0AfHbjjgHrrj2hGLEBs6vTKauniVzeM8p66p682BtNH29t4yOK0v1tVh1dpP KK3fW2z4AJEbq5HhyZWlipFkiu0hmZ9PQ5IosO00zaYQwSrrr38QuEAFuHQqxg28yFgGglyLRvv0k +xxrZttJBCNUOA==; Original-Received: from [87.69.77.57] (port=2876 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 1nKK9l-0008Tj-Bg; Wed, 16 Feb 2022 08:15:41 -0500 In-Reply-To: <20220215210605.1c41c1b2@JRWUBU2> (message from Richard Wordingham on Tue, 15 Feb 2022 21:06:05 +0000) 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:227033 Archived-At: > Date: Tue, 15 Feb 2022 21:06:05 +0000 > From: Richard Wordingham > Cc: larsi@gnus.org, 20140@debbugs.gnu.org > > > > Not off the top of my head, but compare لحج with the presentation > > > form ‎ﳊ U+FCCA ARABIC LIGATURE LAM WITH HAH INITIAL FORM for the > > > first two letters. The lam part is a vertical line in the middle > > > of the glyph; the 'hah' part forms the lower part of the glyph. > > > > They look identical here (using the default Courier New font). With > > what font did you think they will look wrong? > > In the Courier New font in Windows 10 of 2017 (+ automatic updates), > U+FCCA looks like the image in the Unicode code chart, and bears little > resemblance to the righthand two thirds of . > In keeping with its Latin part, the sequence of three characters looks > as one would expect from a typewriter when one enters text letter by > letter. It sounds like Courier New in Windows 10 was "improved" by removing the capability of ligating those 2 characters. On Windows XP, their standard Courier New shows the first 2 characters ligate into a single glyph, which looks just like U+FCCA, but on Windows 10 they don't ligate. I don't know why is that; perhaps Arabic typesetting experts decided these should not ligate? > I must admit I'm having trouble laying my hand on a font which > does these ligatures. Try the Arabic Typesetting font, there I see on Windows 10 that the first 2 characters look like U+FCCA. IOW, this is a font issue, not an Emacs or HarfBuzz issue.