From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Juri Linkov Newsgroups: gmane.emacs.devel Subject: Re: char equivalence classes in search - why not symmetric? Date: Fri, 11 Sep 2015 23:50:30 +0300 Organization: LINKOV.NET Message-ID: <87wpvwvfil.fsf@mail.linkov.net> References: <2a7b9134-af2a-462d-af6c-d02bad60bbe8@default> <834mjecdy7.fsf@gnu.org> <38061f42-eaf1-47c6-b74d-f676ac952b18@default> <83r3miatvl.fsf@gnu.org> <21998.29683.916211.867479@a1i15.kph.uni-mainz.de> <83pp1s7w1m.fsf@gnu.org> <87lhcg38x7.fsf@mail.linkov.net> <83y4gg5n4q.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1442007715 11987 80.91.229.3 (11 Sep 2015 21:41:55 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 11 Sep 2015 21:41:55 +0000 (UTC) Cc: drew.adams@oracle.com, eliz@gnu.org, ulm@gentoo.org, bruce.connor.am@gmail.com, emacs-devel@gnu.org To: Richard Stallman Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Sep 11 23:41:46 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 1ZaW4n-0008JD-Hi for ged-emacs-devel@m.gmane.org; Fri, 11 Sep 2015 23:41:45 +0200 Original-Received: from localhost ([::1]:58652 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZaW4m-0000uX-Ok for ged-emacs-devel@m.gmane.org; Fri, 11 Sep 2015 17:41:44 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:53292) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZaW4M-0000MR-44 for emacs-devel@gnu.org; Fri, 11 Sep 2015 17:41:19 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZaW4L-0000tk-8w for emacs-devel@gnu.org; Fri, 11 Sep 2015 17:41:18 -0400 Original-Received: from sub3.mail.dreamhost.com ([69.163.253.7]:36692 helo=homiemail-a22.g.dreamhost.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZaW4H-0000oe-EK; Fri, 11 Sep 2015 17:41:13 -0400 Original-Received: from homiemail-a22.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a22.g.dreamhost.com (Postfix) with ESMTP id 1FA381A8063; Fri, 11 Sep 2015 14:41:10 -0700 (PDT) Original-Received: from localhost.linkov.net (m83-180-11-145.cust.tele2.ee [83.180.11.145]) (Authenticated sender: jurta@jurta.org) by homiemail-a22.g.dreamhost.com (Postfix) with ESMTPA id 3FA821A8061; Fri, 11 Sep 2015 14:41:08 -0700 (PDT) In-Reply-To: (Richard Stallman's message of "Wed, 09 Sep 2015 11:12:04 -0400") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (x86_64-pc-linux-gnu) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 69.163.253.7 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:189846 Archived-At: > > I'd much rather we focus effort on making the equiv-classes easier to customize. > > Let's not call them "equiv-classes", because that term presupposes > symmetry. (An equivalence relation is symmetric.) Let's call them > search classes for characters. A case table can define all of them: upcase, canonicalize, and equivalence classes, so char-folding could define equiv-classes as well.