Re: emacs could not show this symbol.

[Peter Dyballa]

Am 28.02.2008 um 13:47 schrieb anhnmncb:

> Now I have resolved the problem though don't know why :)
> I use this configuration in .Xdefaults:
> --------------------------x---------------------------- 
> x--------------------------------
>   Emacs.Fontset-0: \
>   -misc-dejavu Sans Mono-medium-r-*-*-12-*-*-*-m-*-fontset-dejavu,\
>   chinese-gb2312:-microsoft-Microsoft YaHei-medium-r-*-*-*-*-*-*-p- 
> *-iso10646-1,\
>   chinese-gbk:-microsoft-Microsoft YaHei-medium-r-*-*-*-*-*-*-p-*- 
> iso10646-1,\
>   gb18030:-microsoft-Microsoft YaHei-medium-r-*-*-*-*-*-*-*-*- 
> iso10646-1,\
>   thai-tis620:-misc-fixed-medium-r-*-*-*-*-*-*-*-*-iso10646-1,\
>   mule-unicode-0100-24ff:-monotype-courier-medium-r-*-*-*-*-*-*-m-*- 
> iso10646-1

I admit that I am not the font or fontset expert, I would have used  
here a gb2312.1980-0 encoded for the chinese-gb2312 encoding, a  
gb18030.2000-0 encoding for the gb18030 encoding, and a tis620-2  
encoded font for the thai-tis620 encoding. For mule-unicode-0100-24ff  
encoding I would use a font that has more to offer than Monotype  
Courier, Lucida Sans Typewriter or DejaVu Sans Mono or Free Mono.  
Well, anyway, I should improve my own settings, too, and learn from  
this a bit.

> And this in .emacs:
> --------------------------x---------------------------- 
> x--------------------------------
> (create-fontset-from-fontset-spec
>  (concat
>   "-misc-dejavu Sans Mono-medium-r-*-*-12-*-*-*-m-*-fontset-dejavu,"
>   "chinese-gb2312:-microsoft-Microsoft YaHei-medium-r-*-*-*-*-*-*-p- 
> *-iso10646-1,"
>   "chinese-gbk:-microsoft-Microsoft YaHei-medium-r-*-*-*-*-*-*-p-*- 
> iso10646-1,"
>   "gb18030:-microsoft-Microsoft YaHei-medium-r-*-*-*-*-*-*-*-*- 
> iso10646-1,"
>   "thai-tis620:-misc-fixed-medium-r-*-*-*-*-*-*-*-*-iso10646-1,"
>   "mule-unicode-0100-24ff:-monotype-courier-medium-r-*-*-*-*-*-*-m- 
> *-iso10646-1"))

Here above I would also check whether the font encodings match the  
GNU Emacs encodings.

>   (set-fontset-font "fontset-default"
>                     'thai "-misc-fixed-medium-r-*-*-*-*-*-*-*-*-iso10646-1")
> (set-default-font "fontset-dejavu")
> (add-to-list 'default-frame-alist '(font . "fontset-dejavu"))

You were constructing a "fontset-default" and then you're setting a  
"fontset-dejavu" to be used as default? I admit, documentation  
(particularly examples) of fontsets can be improved.

> Another question, maybe emacs.font-backend is enabled by default?

You can check this easily by choosing "Send Bug Report..." from the  
Help menu. It will show the configure options used. And ldd (on GNU/ 
Linux) could tell you which to libraries GNU Emacs is linked. This  
can give you a hint of what it's able to use.

> I comment it and find that xft is going on well. Don't know what's the
> most correct way to configure fontset for xft emacs, although I tell
> emacs to use fontset-dejavu, I find that emacs doesn't use this  
> fontset
> actually.

See my comment above!

> And many times emacs could not align a line correctly,

Because you are using monospaced and proportionally spaced fonts in  
your fontsets:

        *-*-p-*-iso10646-1
        *-*-m-*-iso10646-1

--
Greetings

  Pete

Mac OS X is like a wigwam: no fences, no gates, but an apache inside.