From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#65803: 29.1; Noto Sans Mono CJK JP has doubled-width on Windows Date: Sat, 09 Sep 2023 15:51:38 +0300 Message-ID: <83y1hftspx.fsf@gnu.org> References: <83wmx0x3hj.fsf@gnu.org> <87wmx0dbn6.fsf@yahoo.com> <20230908.164911.110008175722794498.wl@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23777"; mail-complaints-to="usenet@ciao.gmane.io" Cc: luangruo@yahoo.com, 65803@debbugs.gnu.org, shingo.fg8@gmail.com To: Werner LEMBERG Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Sep 09 14:52:20 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qexRj-0005yh-Nn for geb-bug-gnu-emacs@m.gmane-mx.org; 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In-Reply-To: <20230908.164911.110008175722794498.wl@gnu.org> (message from Werner LEMBERG on Fri, 08 Sep 2023 14:49:11 +0000 (UTC)) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:269860 Archived-At: > Date: Fri, 08 Sep 2023 14:49:11 +0000 (UTC) > Cc: eliz@gnu.org, 65803@debbugs.gnu.org, shingo.fg8@gmail.com > From: Werner LEMBERG > > > [...] CJK fonts customarily contain tens of > > thousands of glyphs, of which only a small subset represent ASCII > > ``monospace'' characters relevant to Emacs, but the `tmAveCharWidth' > > field, which is derived from the font's OS/2 table: > > > > https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6OS2.html > > > > [...] > > In general I recommend to refer to the OpenType specification > > https://learn.microsoft.com/en-us/typography/opentype/spec/ > > which is an ISO standard (ISO/IEC 14496-22 “Open Font Format”), > instead of the Apple-only TrueType reference. There are significant > differences, especially for modern fonts. How does one know, using the OpenType specification info, whether a given font is fixed-pitch or proportional? I seem to be unable to find this in the spec, but maybe I need new glasses.