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Re: How can I improve Emacs' font selection algorithm?


From: despen
Subject: Re: How can I improve Emacs' font selection algorithm?
Date: Fri, 04 Mar 2011 11:56:47 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux)

Štěpán Němec <address@hidden> writes:

> I know I can use `set-fontset-font' to hardcode fonts used for specific
> character ranges, but that's often inconvenient.
>
> Emacs obviously sometimes does a rather poor job of font selection
> (speaking about GUI Emacs under X in case it matters), e.g. when
> selecting a fallback font for characters missing from the
> default/specified font, it selects some ridiculously ugly (and very
> differently-looking) font, even though there is a much better font
> available for those characters; sometimes it even doesn't find a font at
> all and displays just the encoding rectangles, even though there _is_
> actually an appropriate font available (which I can e.g. set manually).
> That's probably a bug.
>
> Can something be done about that? I haven't been able to find anything
> in the documentation. I imagine there could at least be something like a
> `fallback-font-selection-order' listing the desirable fonts that could
> be consulted during font selection as a crude workaround for the
> problem.

Maybe you should provide examples.
I'm using 23.2.1 on Linux under X.

I picked Options, Set Default Font,
Picked Deja Vu Sans Mono/Bold/12 point and have a reasonably
nice font.

It's important to be specific when reporting problems.


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