From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kenichi Handa Newsgroups: gmane.emacs.bugs Subject: bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear Date: Tue, 11 Sep 2012 23:49:40 +0900 Message-ID: <87bohcty0r.fsf@gnu.org> References: <349071341393469@web30d.yandex.ru> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1347375107 11457 80.91.229.3 (11 Sep 2012 14:51:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 11 Sep 2012 14:51:47 +0000 (UTC) Cc: 11860@debbugs.gnu.org, smias@yandex.ru To: YAMAMOTO Mitsuharu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Sep 11 16:51:47 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 1TBRoU-0004UH-DP for geb-bug-gnu-emacs@m.gmane.org; Tue, 11 Sep 2012 16:51:42 +0200 Original-Received: from localhost ([::1]:40149 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TBRoQ-0004hT-N5 for geb-bug-gnu-emacs@m.gmane.org; Tue, 11 Sep 2012 10:51:38 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:52740) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TBRoJ-0004gy-NA for bug-gnu-emacs@gnu.org; Tue, 11 Sep 2012 10:51:37 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TBRoA-0003RX-5S for bug-gnu-emacs@gnu.org; Tue, 11 Sep 2012 10:51:31 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:45273) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TBRoA-0003RT-2L for bug-gnu-emacs@gnu.org; Tue, 11 Sep 2012 10:51:22 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1TBRoo-0007EM-EM for bug-gnu-emacs@gnu.org; Tue, 11 Sep 2012 10:52:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Kenichi Handa Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 11 Sep 2012 14:52:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 11860 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 11860-submit@debbugs.gnu.org id=B11860.134737508227744 (code B ref 11860); Tue, 11 Sep 2012 14:52:02 +0000 Original-Received: (at 11860) by debbugs.gnu.org; 11 Sep 2012 14:51:22 +0000 Original-Received: from localhost ([127.0.0.1]:54819 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TBRo9-0007DR-FN for submit@debbugs.gnu.org; Tue, 11 Sep 2012 10:51:22 -0400 Original-Received: from fencepost.gnu.org ([208.118.235.10]:51762) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TBRo6-0007DI-2S for 11860@debbugs.gnu.org; Tue, 11 Sep 2012 10:51:19 -0400 Original-Received: from 253.240.accsnet.ne.jp ([202.220.240.253]:55066 helo=mongkok) by fencepost.gnu.org with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1TBRnP-0006At-F5; Tue, 11 Sep 2012 10:50:36 -0400 In-Reply-To: (message from YAMAMOTO Mitsuharu on Sun, 09 Sep 2012 13:06:20 +0900) 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:64117 Archived-At: In article , YAMAMOTO Mitsuharu writes: > As you explained, the grapheme clusters are in logical order, and > glyphs in each grapheme cluster are in drawing order. So simply > merging grapheme clusters as in the code in Ffont_shape_gstring does > not seem to be correct in the case of right-to-left text (what's drawn > later comes earlier in a merged grapheme cluster). Sure. > IMO, dividing glyphs into grapheme clusters is font backed driver's > task, and I don't understand why Ffont_shape_gstring merges the > grapheme clusters for some cases. Could you explain? When I designed it, I consider such a situation that grapheme clusters returned by a font-driver is so fine for Emacs' display engine that Ffont_shape_gstring must combine some of them into one grapheme cluster. But, I agree that it's much cleaner to make a font-driver to consider such a thing. I'll try to fix Ffont_shape_gstring, and check whether or not it breaks rendersing of some scripts. --- Kenichi Handa handa@gnu.org