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#19993: 25.0.50; Unicode fonts defective on Windows Date: Sun, 08 Mar 2015 17:51:16 +0200 Message-ID: <83ioeblc7f.fsf@gnu.org> References: <20150303220228.GA28969@math.berkeley.edu> <83egp4prs3.fsf@gnu.org> <20150305220502.GA4096@math.berkeley.edu> <83a8zqo15d.fsf@gnu.org> <20150306113804.GA11886@math.berkeley.edu> <83385ins3o.fsf@gnu.org> <20150306162136.GA14179@math.berkeley.edu> <83r3t1nax7.fsf@gnu.org> <20150306220801.GA16266@math.berkeley.edu> <83lhj9mdgn.fsf@gnu.org> <20150308074158.GA885@math.berkeley.edu> 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 1425829948 11678 80.91.229.3 (8 Mar 2015 15:52:28 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 8 Mar 2015 15:52:28 +0000 (UTC) Cc: 19993@debbugs.gnu.org To: Ilya Zakharevich Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Mar 08 16:52:12 2015 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 1YUdUx-0000y6-Ul for geb-bug-gnu-emacs@m.gmane.org; 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Sun, 08 Mar 2015 15:52:01 +0000 Original-Received: (at 19993) by debbugs.gnu.org; 8 Mar 2015 15:51:43 +0000 Original-Received: from localhost ([127.0.0.1]:39524 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YUdUU-0004yo-DM for submit@debbugs.gnu.org; Sun, 08 Mar 2015 11:51:42 -0400 Original-Received: from mtaout21.012.net.il ([80.179.55.169]:43555) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1YUdUR-0004yY-4d for 19993@debbugs.gnu.org; Sun, 08 Mar 2015 11:51:40 -0400 Original-Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0NKW00000H1S5R00@a-mtaout21.012.net.il> for 19993@debbugs.gnu.org; Sun, 08 Mar 2015 17:51:32 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NKW000I1HDV1YA0@a-mtaout21.012.net.il>; Sun, 08 Mar 2015 17:51:32 +0200 (IST) In-reply-to: <20150308074158.GA885@math.berkeley.edu> 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:100265 Archived-At: > Date: Sat, 7 Mar 2015 23:41:58 -0800 > From: Ilya Zakharevich > Cc: 19993@debbugs.gnu.org > > The following subrange is “identified”: > > 9 0400 - 04FF Cyrillic > 0500 - 052F Cyrillic Supplement > 2DE0 - 2DFF Cyrillic Extended-A > A640 - A69F Cyrillic Extended-B > > What is actually supported: > > 0400 - 04FF Everything but 04d8,04d9 (Schwa, used in Cyrillic Azeri — but > contemporary Azeri is written in Latin) > 0500 - 052F Only 0500 - 0513, 051a - 051d supported > 2DE0 - 2DFF None supported (5.1) > A640 - A69F None supported (5.1 and later) FWIW, on one system I use frequently (a pretty standard Windows 7 machine), the last two blocks are not supported by any font. Likewise on another system, an XP with a lot of additional fonts installed. But if I install GNU Unifont, then Emacs does use it for these blocks. So somehow we do TRT in some situations. Maybe these subranges are just a filter? > Does it look like a good indication of anything? I would say no… Do > you know any other tool looking at this bitmap for choosing which font > to pick up for a particular character? I guess by "tool" you mean a technique or algorithm that uses the font data for selecting the appropriate font? If so, no, I know very little in this area, on Windows or elsewhere. Enumerating all the glyphs would work, but is probably prohibitively expensive.