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: char equivalence classes in search - why not symmetric? Date: Tue, 01 Sep 2015 21:15:26 +0300 Message-ID: <83r3miatvl.fsf@gnu.org> References: <2a7b9134-af2a-462d-af6c-d02bad60bbe8@default> <834mjecdy7.fsf@gnu.org> <38061f42-eaf1-47c6-b74d-f676ac952b18@default> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE X-Trace: ger.gmane.org 1441131435 12230 80.91.229.3 (1 Sep 2015 18:17:15 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 1 Sep 2015 18:17:15 +0000 (UTC) Cc: emacs-devel@gnu.org To: Drew Adams Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Sep 01 20:17:06 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 1ZWq7F-0000ef-1L for ged-emacs-devel@m.gmane.org; Tue, 01 Sep 2015 20:17:05 +0200 Original-Received: from localhost ([::1]:56684 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZWq7F-0004Lx-0I for ged-emacs-devel@m.gmane.org; Tue, 01 Sep 2015 14:17:05 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35827) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZWq5X-0002GP-7x for emacs-devel@gnu.org; Tue, 01 Sep 2015 14:15:20 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZWq5U-0002Ol-2G for emacs-devel@gnu.org; Tue, 01 Sep 2015 14:15:19 -0400 Original-Received: from mtaout29.012.net.il ([80.179.55.185]:38076) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZWq5T-0002Nf-RG for emacs-devel@gnu.org; Tue, 01 Sep 2015 14:15:16 -0400 Original-Received: from conversion-daemon.mtaout29.012.net.il by mtaout29.012.net.il (HyperSendmail v2007.08) id <0NU000700FOOB000@mtaout29.012.net.il> for emacs-devel@gnu.org; Tue, 01 Sep 2015 21:15:32 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([84.94.185.246]) by mtaout29.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NU0004BUG1WPI50@mtaout29.012.net.il>; Tue, 01 Sep 2015 21:15:32 +0300 (IDT) In-reply-to: <38061f42-eaf1-47c6-b74d-f676ac952b18@default> X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 80.179.55.185 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:189408 Archived-At: > Date: Tue, 1 Sep 2015 10:50:22 -0700 (PDT) > From: Drew Adams > Cc: emacs-devel@gnu.org >=20 > > We are asking for matches that disregard the diacriticals > > (and in case of =AA also higher-order collation-order variation). >=20 > No. You are asking for that only when you use a search pattern > that does not use the diacriticals. When you search with =E1 in > the pattern you are NOT asking for matches that disregard the > diacriticals. And why not? Because =E1 does include a diacritical. By specifying it, the user t= old us the diacriticals are important, and shouldn't be disregarded. > > It's what the Unicode Standard recommends, and IMO it makes a > > lot of sense. See http://unicode.org/reports/tr10/#Searching. >=20 > I don't see that, when reading that section. I do see that it > explicitly calls out that behavior as an _option_: >=20 > 8.2 Asymmetric Search > Users often find asymmetric searching to be a useful option. "Users often find asymmetric searching to be a useful option" sounds like a recommendation to me.