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#11073: 24.0.94; BIDI-related crash in redisplay with certain byte sequences Date: Fri, 23 Mar 2012 20:46:36 +0200 Message-ID: <837gybupdf.fsf@gnu.org> References: <83sjgzvb6w.fsf@gnu.org> <83mx77v6jz.fsf@gnu.org> <83fwczux5q.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: dough.gmane.org 1332528442 15562 80.91.229.3 (23 Mar 2012 18:47:22 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 23 Mar 2012 18:47:22 +0000 (UTC) Cc: 11073@debbugs.gnu.org To: Stefan Monnier , Kenichi Handa Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Mar 23 19:47:21 2012 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 1SB9WB-0002XG-Rx for geb-bug-gnu-emacs@m.gmane.org; Fri, 23 Mar 2012 19:47:19 +0100 Original-Received: from localhost ([::1]:53389 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SB9WB-0001Z3-1x for geb-bug-gnu-emacs@m.gmane.org; Fri, 23 Mar 2012 14:47:19 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:60159) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SB9W4-0001YO-T4 for bug-gnu-emacs@gnu.org; Fri, 23 Mar 2012 14:47:17 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SB9W0-0006vM-P6 for bug-gnu-emacs@gnu.org; Fri, 23 Mar 2012 14:47:12 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:57108) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SB9W0-0006vI-Ls for bug-gnu-emacs@gnu.org; Fri, 23 Mar 2012 14:47:08 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1SB9zu-0000Nn-4f for bug-gnu-emacs@gnu.org; Fri, 23 Mar 2012 15:18:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 23 Mar 2012 19:18:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 11073 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 11073-submit@debbugs.gnu.org id=B11073.13325302661450 (code B ref 11073); Fri, 23 Mar 2012 19:18:02 +0000 Original-Received: (at 11073) by debbugs.gnu.org; 23 Mar 2012 19:17:46 +0000 Original-Received: from localhost ([127.0.0.1]:35707 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1SB9za-0000ND-CB for submit@debbugs.gnu.org; Fri, 23 Mar 2012 15:17:46 -0400 Original-Received: from mtaout23.012.net.il ([80.179.55.175]:49803) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1SB9zK-0000Mp-09 for 11073@debbugs.gnu.org; Fri, 23 Mar 2012 15:17:41 -0400 Original-Received: from conversion-daemon.a-mtaout23.012.net.il by a-mtaout23.012.net.il (HyperSendmail v2007.08) id <0M1C00F00PGUK800@a-mtaout23.012.net.il> for 11073@debbugs.gnu.org; Fri, 23 Mar 2012 20:46:29 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([84.229.241.151]) by a-mtaout23.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0M1C00FVYPHGHW90@a-mtaout23.012.net.il>; Fri, 23 Mar 2012 20:46:29 +0200 (IST) In-reply-to: X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) 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:58031 Archived-At: > From: Stefan Monnier > Cc: 11073@debbugs.gnu.org > Date: Fri, 23 Mar 2012 13:34:45 -0400 > > > They are not equivalent when conversion of the multibyte form into a > > character unifies a CJK character that is represented by a codepoint > > from one of the private use areas. > > Why do we need this unification? Or rather, why do we need multiple > codepoints, which then forces us to unify them? That's something Handa-san (CC'ed) will be able to explain much better than I ever could. AFAIU, there are good reasons to have some CJK characters on separate codepoints, because they need to be treated differently from their Unicode codepoints (perhaps a different choice of font to display them?)