From: Kenichi Handa <handa@m17n.org>
To: Miles Bader <miles@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: set-fontset-font
Date: Wed, 16 Jul 2008 15:55:27 +0900 [thread overview]
Message-ID: <E1KJ0v9-0007DI-19@etlken.m17n.org> (raw)
In-Reply-To: <buoprpegxdx.fsf@dhapc248.dev.necel.com> (message from Miles Bader on Wed, 16 Jul 2008 15:23:54 +0900)
In article <buoprpegxdx.fsf@dhapc248.dev.necel.com>, Miles Bader <miles.bader@necel.com> writes:
> In a fresh emacs, started with "emacs -Q", I can change the font used
> for e.g. japanese characters by doing:
> (set-fontset-font "fontset-default" 'kana "メイリオ")
> (set-fontset-font "fontset-default" 'han "メイリオ")
> where "メイリオ" is the name of the font. This works fine.
> However in my normal emacs, it _doesn't_ work -- the font emacs uses for
> Japanse character doesn't change.
I have not yet decided how to manage non-ASCII
family/foundry/adstyle names. Currently, perhaps this will
work:
(set-fontset-font "fontset-default" 'kana
(encode-coding-string "メイリオ" 'utf-8))
(set-fontset-font "fontset-default" 'ha
(encode-coding-string "メイリオ" 'utf-8))
In the future, of course, I'll fix the code so that your
original setting work.
> What does "fontset-default" really mean, anyway?
A fontset maps a non-ASCII character to a group of fonts
(font-group).
Usually, two fontsets "fontset-startup" and
"fontset-default" are active. "fontset-startup" is made
automatically and it maps Latin characters to the default
font and set the fallback font to the default font. The
mapping of both fonts may be modified by a user.
To decide a font for a non-ASCII character CH, Emacs does
this:
(1) Check "fontset-startup". If CH is mapped to a
font-gourp and one of the font supports CH, that font is
used. Otherwise...
(2) Check "fontset-default". If CH is mapped to a
font-gourp and one of the font supports CH, that font is
used. Otherwise...
(3) Check the fallback font-group of "fontset-startup". If
CH is mapped.... Otherwise...
(4) Check the fallback font-group of "fontset-default". If
CH is mapped.... Otherwise...
(5) Give up finding a font for CH.
So, in short, "fontset-default" gives the default
information about fonts to support each character
(e.g. Devanagari fonts requires this and that OTF features).
---
Kenichi Handa
handa@ni.aist.go.jp
next prev parent reply other threads:[~2008-07-16 6:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-16 6:23 set-fontset-font Miles Bader
2008-07-16 6:55 ` Kenichi Handa [this message]
2008-07-16 14:08 ` set-fontset-font Miles Bader
2008-07-17 0:29 ` set-fontset-font Kenichi Handa
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