From: Eli Zaretskii <eliz@gnu.org>
To: Shingo Tanaka <shingo.fg8@gmail.com>, Po Lu <luangruo@yahoo.com>
Cc: 65803@debbugs.gnu.org
Subject: bug#65803: 29.1; Noto Sans Mono CJK JP has doubled-width on Windows
Date: Fri, 08 Sep 2023 15:18:32 +0300 [thread overview]
Message-ID: <83wmx0x3hj.fsf@gnu.org> (raw)
In-Reply-To: <CAH4H2-wWYfw0Afmw=DxvNfx=hX_J1Rk6_9s96NYwakArjSADkA@mail.gmail.com> (message from Shingo Tanaka on Fri, 8 Sep 2023 07:26:18 +0900)
> From: Shingo Tanaka <shingo.fg8@gmail.com>
> Date: Fri, 8 Sep 2023 07:26:18 +0900
> Cc: 65803@debbugs.gnu.org
>
> > Please also tell what does (frame-char-width) return with each of the
> > two fonts on Windows.
>
> Here are the results including the one on Ubuntu.
> Obviously, the 2nd one (Noto on Windows) returns a doubled-width size
> which is unexpected.
>
> ;; On Windows - No issue
> (progn
> (set-face-attribute 'default nil :font "MS ゴシック")
> (frame-char-width))
> 10
> (string-pixel-width "A")
> 10
> (string-pixel-width "あ")
> 20
>
> ;; On Windows - Wrong frame-char-width
> (progn
> (set-face-attribute 'default nil :font "Noto Sans Mono CJK JP")
> (frame-char-width))
> 20
> (string-pixel-width "A")
> 10
> (string-pixel-width "あ")
> 20
>
> ;; On Ubuntu (w/Cairo) - No issue
> (progn
> (set-face-attribute 'default nil :font "Noto Sans Mono CJK JP")
> (frame-char-width))
> 13
> (string-pixel-width "A")
> 13
> (string-pixel-width "あ")
> 26
This is strange. AFAIU, frame-char-width returns the "average width"
attribute of the font, so why do we get different results on Windows
and on X? Po Lu, can you help? Do font backends on X perform some
trickery on the font's average_width attribute that we don't do on
Windows?
> > Is your Ubuntu build with Cairo, btw?
>
> Yes, the Emacs on Ubuntu is the latest Snap version which is compiled
> with Cairo, as I can double check it by seeing colored Emoji.
next prev parent reply other threads:[~2023-09-08 12:18 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 [this message]
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
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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