From: Jason Rumney <jasonr@gnu.org>
To: emacs-devel@gnu.org
Subject: Re: State of Unicode display support on Windows
Date: Tue, 12 Oct 2010 02:22:16 +0800 [thread overview]
Message-ID: <4CB355D8.5020705@gnu.org> (raw)
In-Reply-To: <87pqvg4ot0.fsf@telefonica.net>
On 12/10/2010 01:33, Óscar Fuentes wrote:
> Some characters display fine on GNU/Linux but not on Windows. An example
> is FISHEYE (?\u25c9) with the Consolas font. Apparently, that font does
> not include that character. In GNU/Linux Emacs simply uses DejaVu for
> displaying the character, but not on Windows, where a white space is
> displayed (the Windows machine also has DejaVu installed.)
>
> Is this a known limitation or a bug?
>
> uniscribe:-outline-Consolas-normal-normal-normal-mono-20-*-*-*-c-*-iso10646-1 (#x03)
>
The font is claiming to have that character in position 3 in the glyph
table. I've also seen the same thing with fonts claiming position 1.
There is nothing in the documentation for opentype or the font related
Windows API functions that suggests that there is anything special about
those glyph indexes, or that it is safe to assume that they mean a
character is missing from the font. Currently I think we only treat a
return of 0 as indicating that the character is missing, as that is
reserved by the truetype and opentype specs for the character ".notdef".
next prev parent reply other threads:[~2010-10-11 18:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-11 17:33 State of Unicode display support on Windows Óscar Fuentes
2010-10-11 18:22 ` Jason Rumney [this message]
2010-10-11 18:52 ` Juanma Barranquero
2010-10-11 19:00 ` Óscar Fuentes
2010-10-11 19:03 ` Juanma Barranquero
2010-10-11 19:13 ` Eli Zaretskii
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