Re: Ntemacs chooses wrong font.

["Kevin Yu" <yujie052@gmail.com>]

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On Wed, Jun 11, 2008 at 7:50 PM, Kenichi Handa <handa@m17n.org> wrote:

> In article <42b562540806110351p699e4ad8l19b5841724eef431@mail.gmail.com>,
> "Kevin Yu" <yujie052@gmail.com> writes:
>
> > > > Emacs displays the font family name as:"\320\302\313\316\314\345"
> > >
> > > This is a bug, but it should at least be consistent, as there is no
> > > encoding in either direction.
>
> I currently explicitly generate a unibyte string for font
> names just to avoid the font name encoding problem until the
> font-backend codes gets stable.
>
>
> > Here's my font related configuration
>
> > (set-language-environment "chinese-gb18030")
> > (set-frame-font "Monaco-10")
> > (set-fontset-font (frame-parameter nil 'font)
> >           'han '("Microsoft Yahei"."unicode-bmp"))
> > (set-fontset-font (frame-parameter nil 'font)
> >           'symbol '("Microsoft Yahei"."unicode-bmp"))
> > (set-fontset-font (frame-parameter nil 'font)
> >           'cjk-misc '("Microsoft Yahei"."unicode-bmp"))
> > (set-fontset-font (frame-parameter nil 'font)
> >           'bopomofo '("Microsoft Yahei"."unicode-bmp"))
>
> Emacs at first checks if a charater is supported by the
> frame font (here "Monaco-10") to avoid unnecessary looking
> up of fontset table .  If supported, the frame font is used.
> And, in your case, the font backend on Windows says that the
> frame font supports it.  That is the problem.

Why does the backend say the frame font support the Chinese charset?
Is it a bug of Windows font backend or a bug of "Monaco" font?
I have tried to use "Courier New", but emacs can't choose the right font for
Chinese either.


>
>
> > if I open a existed file with Chinese characters, everything goes well.
>
> It seems that you saved the file with some of legacy
> encoding (e.g. euc-cn, big5).  On reading such a file, Emacs
> adds a charset text-property (e.g. chinese-gb2312, big5),
> and if a character has such a property, Emacs doesn't try
> the frame font, but does a normal fontset looking up
> (because `charset' information may change the priority of
> fonts).  So, your fontset setting above takes effect.
>
> Perhaps, we should not try the frame font for a certain
> group of charcters (e.g. han, indic, ??).
>
> ---
> Kenichi Handa
> handa@ni.aist.go.jp
>

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