From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: lax matching is not a great default behavior Date: Tue, 01 Dec 2015 17:38:22 +0200 Message-ID: <83bnaakwlt.fsf@gnu.org> References: <565D66FD.9090400@online.de> <874mg2fo7t.fsf@igel.home> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE X-Trace: ger.gmane.org 1448984346 24104 80.91.229.3 (1 Dec 2015 15:39:06 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 1 Dec 2015 15:39:06 +0000 (UTC) Cc: jwiegley@gmail.com, emacs-devel@gnu.org, schwab@linux-m68k.org, drew.adams@oracle.com, andreas.roehler@online.de To: Yuri Khan Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Dec 01 16:38:57 2015 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1a3n0y-0007JR-8R for ged-emacs-devel@m.gmane.org; Tue, 01 Dec 2015 16:38:48 +0100 Original-Received: from localhost ([::1]:53305 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a3n0x-0006kP-M6 for ged-emacs-devel@m.gmane.org; Tue, 01 Dec 2015 10:38:47 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:37286) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a3n0f-0006jz-Uj for emacs-devel@gnu.org; Tue, 01 Dec 2015 10:38:33 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1a3n0c-0001fw-2A for emacs-devel@gnu.org; Tue, 01 Dec 2015 10:38:29 -0500 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:52678) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a3n0b-0001f7-QX for emacs-devel@gnu.org; Tue, 01 Dec 2015 10:38:25 -0500 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0NYO00900R852U00@a-mtaout20.012.net.il> for emacs-devel@gnu.org; Tue, 01 Dec 2015 17:38:24 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([84.94.185.246]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NYO00845RG0Y130@a-mtaout20.012.net.il>; Tue, 01 Dec 2015 17:38:24 +0200 (IST) In-reply-to: X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 X-Received-From: 80.179.55.166 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:195679 Archived-At: > From: Yuri Khan > Date: Tue, 1 Dec 2015 16:42:01 +0600 > Cc: John Wiegley , > =09Andreas R=C3=B6hler , > =09Drew Adams , Emacs developers >=20 > > Case folding has nothing to do with ASCII. Latin, Cyrillic, Gree= k, > > Hebrew, Arabic, a lot of scripts have the concept of letter case,= or > > different forms for the same letter. >=20 > Also, Japanese has no notion of case, but hiragana vs katakana > distinction is very similar to lower vs upper case. While all of the above is true, case-folding in Emacs only folds characters where the UCD defines case pairs. AFAIK, this includes neither Hebrew and Arabic, nor Katakana and Hiragana. See characters.el for the full story.