From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#17130: 24.4.50; Deficient Unicode case folding Date: Sat, 29 Mar 2014 09:45:10 +0300 Message-ID: <83y4ztec5l.fsf@gnu.org> References: <87txair0g7.fsf@ivytech.edu> <83fvm2fhii.fsf@gnu.org> <87ob0qrugy.fsf@nbtrap.com> 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 1396075565 10540 80.91.229.3 (29 Mar 2014 06:46:05 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 29 Mar 2014 06:46:05 +0000 (UTC) Cc: 17130@debbugs.gnu.org To: nbtrap@nbtrap.com Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Mar 29 07:46:15 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1WTn1y-0000bN-TQ for geb-bug-gnu-emacs@m.gmane.org; Sat, 29 Mar 2014 07:46:15 +0100 Original-Received: from localhost ([::1]:37738 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WTn1y-000606-Dp for geb-bug-gnu-emacs@m.gmane.org; Sat, 29 Mar 2014 02:46:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39875) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WTn1r-0005zV-OT for bug-gnu-emacs@gnu.org; Sat, 29 Mar 2014 02:46:12 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WTn1m-0000FB-KN for bug-gnu-emacs@gnu.org; Sat, 29 Mar 2014 02:46:07 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:54168) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WTn1m-0000F7-HN for bug-gnu-emacs@gnu.org; Sat, 29 Mar 2014 02:46:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1WTn1m-0005eM-3x for bug-gnu-emacs@gnu.org; Sat, 29 Mar 2014 02:46:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 29 Mar 2014 06:46:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 17130 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 17130-submit@debbugs.gnu.org id=B17130.139607551521653 (code B ref 17130); Sat, 29 Mar 2014 06:46:02 +0000 Original-Received: (at 17130) by debbugs.gnu.org; 29 Mar 2014 06:45:15 +0000 Original-Received: from localhost ([127.0.0.1]:55350 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WTn10-0005dA-Ay for submit@debbugs.gnu.org; Sat, 29 Mar 2014 02:45:14 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:48885) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WTn0u-0005cy-Gj for 17130@debbugs.gnu.org; Sat, 29 Mar 2014 02:45:10 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0N3600D00QQ33Y00@a-mtaout20.012.net.il> for 17130@debbugs.gnu.org; Sat, 29 Mar 2014 09:45:06 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0N3600C2VQR6GBB0@a-mtaout20.012.net.il>; Sat, 29 Mar 2014 09:45:06 +0300 (IDT) In-reply-to: <87ob0qrugy.fsf@nbtrap.com> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:87514 Archived-At: > From: nbtrap@nbtrap.com > Cc: 17130@debbugs.gnu.org > Date: Fri, 28 Mar 2014 15:31:09 -0400 > > Eli Zaretskii writes: > > >> M-: (compare-strings "σ" nil nil "ς" nil nil t) > >> > >> ==> -1 ;; should be t > > > > No, because these characters are not a case pair. > > They're not a case pair in Emacs, but they should compare equally under > Unicode case folding. Emacs doesn't currently support that. > >> Can someone that knows a thing about Unicode and emacs case tables speak > >> to whether the latter could suffice for implementing full Unicode case > >> folding? > > > > What is "full Unicode case folding"? > > Somthing that implements this: > http://www.unicode.org/Public/UNIDATA/CaseFolding.txt > > And perhaps more. I don't know, but someone on this list probably does. > > If you look about a third of the way down, there's a line saying that > U+03C2 (ς) should fold into U+03C3 (σ). Patches are welcome to import those tables into Emacs, and make case folding support them.