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: On language-dependent defaults for character-folding Date: Wed, 24 Feb 2016 19:56:07 +0200 Message-ID: <83mvqqgfgo.fsf@gnu.org> References: <834mdc5w6o.fsf@gnu.org> <838u2hu6aq.fsf@gnu.org> <871t899tde.fsf@gnus.org> <83y4ahru04.fsf@gnu.org> <83fuwproyf.fsf@gnu.org> <837fi0sz29.fsf@gnu.org> <83egc8qzjh.fsf@gnu.org> <87egc7evu3.fsf@gnus.org> <83io1jpt4u.fsf@gnu.org> <87povqhj25.fsf@gnus.org> <87povqe5tr.fsf@gnus.org> <87ziuta4l4.fsf@gnus.org> <87y4adzcia.fsf@gnus.org> <83twl0k1k5.fsf@gnu.org> <83k2lvi99c.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1456336607 22433 80.91.229.3 (24 Feb 2016 17:56:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 24 Feb 2016 17:56:47 +0000 (UTC) Cc: larsi@gnus.org, lokedhs@gmail.com, emacs-devel@gnu.org To: rms@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Feb 24 18:56:34 2016 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 1aYdfn-00038e-A4 for ged-emacs-devel@m.gmane.org; Wed, 24 Feb 2016 18:56:27 +0100 Original-Received: from localhost ([::1]:37454 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYdfm-0005uA-TE for ged-emacs-devel@m.gmane.org; Wed, 24 Feb 2016 12:56:26 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:42248) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYdfh-0005or-98 for emacs-devel@gnu.org; Wed, 24 Feb 2016 12:56:23 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aYdfd-00007B-Ag for emacs-devel@gnu.org; Wed, 24 Feb 2016 12:56:21 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:47599) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYdfd-000074-7n; Wed, 24 Feb 2016 12:56:17 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3779 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aYdfV-0004wG-VL; Wed, 24 Feb 2016 12:56:10 -0500 In-reply-to: (message from Richard Stallman on Wed, 24 Feb 2016 08:41:46 -0500) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e 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:200630 Archived-At: > From: Richard Stallman > CC: larsi@gnus.org, lokedhs@gmail.com, emacs-devel@gnu.org > Date: Wed, 24 Feb 2016 08:41:46 -0500 > > > > * Equivalent letters (ö and ø in Swedish). > > > Not just letters -- sequences of characters. For example, å vs aa in > > Danish, or ffi vs ffi. > > å and aa in Danish are equivalent, like ö and ø in Swedish. > > Ligatures such as ffi are a different issue entirely. > The relationship between ffi vs ffi is language-independent > and similar to these two levels: > > * Different appearances of the same letter+decorations: > as a single code point, or as a composition. > > * Identical-looking distinct code points (Latin a and Cyrillic a). I didn't say the 2 examples were in the same class. My point was that we are not talking about equivalence of _characters_, we are talking about equivalent character _sequences_.