From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kenichi Handa Newsgroups: gmane.emacs.devel Subject: Re: Compositions and bidi display (was: bug#5977: 24.0.50; Lao HELLO is incorrectly displayed) Date: Mon, 26 Apr 2010 20:29:18 +0900 Message-ID: References: <3A521851-F7CC-45DB-A2ED-8348EF96D5CF@Freenet.DE> <83fx2q5w86.fsf@gnu.org> <834oj22e96.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1272281350 26330 80.91.229.12 (26 Apr 2010 11:29:10 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 26 Apr 2010 11:29:10 +0000 (UTC) Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Apr 26 13:29:08 2010 connect(): No such file or directory Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1O6MUu-0003YK-8C for ged-emacs-devel@m.gmane.org; Mon, 26 Apr 2010 13:29:08 +0200 Original-Received: from localhost ([127.0.0.1]:57489 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O6MUt-00056u-Oo for ged-emacs-devel@m.gmane.org; Mon, 26 Apr 2010 07:29:07 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1O6MTw-0004o0-JK for emacs-devel@gnu.org; Mon, 26 Apr 2010 07:28:08 -0400 Original-Received: from [140.186.70.92] (port=53641 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O6MTu-0004nb-WB for emacs-devel@gnu.org; Mon, 26 Apr 2010 07:28:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1O6MTu-000383-1s for emacs-devel@gnu.org; Mon, 26 Apr 2010 07:28:06 -0400 Original-Received: from mx1.aist.go.jp ([150.29.246.133]:41059) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1O6MTq-00037A-7Y; Mon, 26 Apr 2010 07:28:04 -0400 Original-Received: from rqsmtp1.aist.go.jp (rqsmtp1.aist.go.jp [150.29.254.115]) by mx1.aist.go.jp with ESMTP id o3QBRxXV013052; Mon, 26 Apr 2010 20:27:59 +0900 (JST) env-from (handa@m17n.org) Original-Received: from smtp3.aist.go.jp by rqsmtp1.aist.go.jp with ESMTP id o3QBRxvL028910; Mon, 26 Apr 2010 20:27:59 +0900 (JST) env-from (handa@m17n.org) Original-Received: by smtp3.aist.go.jp with ESMTP id o3QBRwOW023542; Mon, 26 Apr 2010 20:27:58 +0900 (JST) env-from (handa@m17n.org) Original-Received: from handa by etlken with local (Exim 4.69) (envelope-from ) id 1O6MV4-0003JI-UF; Mon, 26 Apr 2010 20:29:18 +0900 In-Reply-To: <834oj22e96.fsf@gnu.org> (message from Eli Zaretskii on Fri, 23 Apr 2010 21:52:05 +0300) X-detected-operating-system: by eggs.gnu.org: Solaris 9 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:124217 Archived-At: In article <834oj22e96.fsf@gnu.org>, Eli Zaretskii writes: > Where I really need help is in getting compositions to work when text > is reordered. Is it true that composition_reseat_it and its > subroutines need to see the to-be-composed characters in strict > logical order, i.e. left to right? Or can they also work if they see > the characters to be composed in the reverse order? All composition-related functions expect characters are in logical order. The bottom-most library for OTF handling (libotf) requires it because OpenType tables expect characters in logical order. So, the bidi reordering must happen after composition handling is done. --- Kenichi Handa handa@m17n.org