From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Newsgroups: gmane.emacs.bugs Subject: bug#11309: 24.1.50; Case problems with [:upper:] and Cyrillic, Greek Date: Mon, 7 Dec 2020 23:14:45 +0100 Message-ID: <5D75AE9F-F1F7-4A7E-A135-0071E03369AA@acm.org> References: <4f93d952.287f22e03@parhasard.net> Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.17\)) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="22354"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 11309@debbugs.gnu.org To: Lars Ingebrigtsen , Aidan Kehoe Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Dec 07 23:15:28 2020 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 1kmOn1-0005gb-Qr for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 07 Dec 2020 23:15:27 +0100 Original-Received: from localhost ([::1]:60432 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kmOn0-0004Es-RV for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 07 Dec 2020 17:15:26 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34860) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kmOme-0004Dw-Ck for bug-gnu-emacs@gnu.org; Mon, 07 Dec 2020 17:15:09 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:44214) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kmOmc-0003Lv-8y for bug-gnu-emacs@gnu.org; Mon, 07 Dec 2020 17:15:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kmOmc-0003j2-2j for bug-gnu-emacs@gnu.org; Mon, 07 Dec 2020 17:15:02 -0500 X-Loop: help-debbugs@gnu.org In-Reply-To: <4f93d952.287f22e03@parhasard.net> Resent-From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 07 Dec 2020 22:15:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 11309 X-GNU-PR-Package: emacs Original-Received: via spool by 11309-submit@debbugs.gnu.org id=B11309.160737929414294 (code B ref 11309); Mon, 07 Dec 2020 22:15:02 +0000 Original-Received: (at 11309) by debbugs.gnu.org; 7 Dec 2020 22:14:54 +0000 Original-Received: from localhost ([127.0.0.1]:55760 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kmOmU-0003iU-2y for submit@debbugs.gnu.org; Mon, 07 Dec 2020 17:14:54 -0500 Original-Received: from mail70c50.megamailservers.eu ([91.136.10.80]:40440) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kmOmR-0003iH-Lq for 11309@debbugs.gnu.org; Mon, 07 Dec 2020 17:14:52 -0500 X-Authenticated-User: mattiase@bredband.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megamailservers.eu; s=maildub; t=1607379289; bh=77tTjjdmQqq4ebq9VvSjM6ssYTPWZ9MthlTWrOFwKdU=; h=From:Subject:Date:Cc:To:From; b=kw0NXj/5zwF+VqXPfcMfZIbzTRiUSCclCOagH2L2HBHlGaVs1um+1Lt1JUs9c8uk+ T60qOp3aTmBV9NDGVbO0PR9lEaubrMMGRrsu9dL26iahfAYRFyeKWPnHTtudoVah5w AVTmLVA54mykIgLKmN7M2jCBarnqCQy1j1cwmjrE= Feedback-ID: mattiase@acm.or Original-Received: from [192.168.0.4] (c188-150-171-71.bredband.comhem.se [188.150.171.71]) (authenticated bits=0) by mail70c50.megamailservers.eu (8.14.9/8.13.1) with ESMTP id 0B7MEk62024145; Mon, 7 Dec 2020 22:14:48 +0000 X-Mailer: Apple Mail (2.3445.104.17) X-CTCH-RefID: str=0001.0A782F29.5FCEA959.004A, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0 X-CTCH-VOD: Unknown X-CTCH-Spam: Unknown X-CTCH-Score: 0.000 X-CTCH-Flags: 0 X-CTCH-ScoreCust: 0.000 X-CSC: 0 X-CHA: v=2.3 cv=UIOj4xXy c=1 sm=1 tr=0 a=SF+I6pRkHZhrawxbOkkvaA==:117 a=SF+I6pRkHZhrawxbOkkvaA==:17 a=kj9zAlcOel0A:10 a=M51BFTxLslgA:10 a=vFieRUaNK8m44jR1g9EA:9 a=CjuIK1q_8ugA:10 X-Origin-Country: SE 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:195287 Archived-At: Not surprising in the least given the broken logic: ((class_bits & BIT_UPPER) && (ISUPPER (c) || (corig !=3D c && c =3D=3D downcase (corig) && ISLOWER (c)))) = || ((class_bits & BIT_LOWER) && (ISLOWER (c) || (corig !=3D c && c =3D=3D upcase (corig) && ISUPPER(c)))) || where corig is the character being matched and c is corig after = canonicalising, which appears to mean downcasing in practice. This means that the second case (BIT_LOWER means [:lower:]) works more = or less as intended (by accident) but the [:upper:] case is less lucky = and doesn't, as observed. ASCII characters aren't affected by this bug since they are handled by a = separate bitmap. This has probably never worked properly.