From: Werner LEMBERG <wl@gnu.org>
To: luangruo@yahoo.com, 65803@debbugs.gnu.org
Cc: eliz@gnu.org, shingo.fg8@gmail.com
Subject: bug#65803: 29.1; Noto Sans Mono CJK JP has doubled-width on Windows
Date: Fri, 08 Sep 2023 14:49:11 +0000 (UTC) [thread overview]
Message-ID: <20230908.164911.110008175722794498.wl@gnu.org> (raw)
In-Reply-To: <87wmx0dbn6.fsf@yahoo.com>
> [...] 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.
Werner
next prev parent reply other threads:[~2023-09-08 14:49 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-07 13:38 bug#65803: 29.1; Noto Sans Mono CJK JP has doubled-width on Windows Shingo Tanaka
2023-09-07 13:50 ` Eli Zaretskii
2023-09-07 14:24 ` Shingo Tanaka
2023-09-07 14:40 ` Eli Zaretskii
2023-09-07 14:57 ` Eli Zaretskii
2023-09-07 23:19 ` Shingo Tanaka
2023-09-08 6:25 ` Eli Zaretskii
2023-09-07 22:26 ` Shingo Tanaka
2023-09-08 12:18 ` Eli Zaretskii
2023-09-08 13:42 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-08 14:49 ` Werner LEMBERG [this message]
2023-09-09 12:51 ` Eli Zaretskii
2023-09-09 13:42 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-09 14:45 ` Eli Zaretskii
2023-09-09 12:17 ` Eli Zaretskii
2023-09-09 13:38 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-09 14:39 ` Eli Zaretskii
2023-09-09 14:57 ` Eli Zaretskii
2023-09-10 1:00 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10 5:22 ` Eli Zaretskii
2023-09-10 5:36 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10 5:42 ` Eli Zaretskii
2023-09-10 5:55 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10 6:48 ` Eli Zaretskii
2023-09-10 7:31 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10 7:53 ` Eli Zaretskii
2023-09-10 7:55 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10 8:01 ` Eli Zaretskii
2023-09-10 8:08 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10 8:19 ` Eli Zaretskii
2023-09-10 8:31 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10 8:50 ` Eli Zaretskii
2023-09-10 9:30 ` Eli Zaretskii
2023-09-10 11:29 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10 11:44 ` Eli Zaretskii
2023-09-10 12:09 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10 12:43 ` Eli Zaretskii
2023-09-10 12:39 ` Shingo Tanaka
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