Re: Bug while locale in utf8

[Kenichi Handa]

In article <address@hidden>, Jason Rumney <address@hidden> writes:

> Yiyi Hu wrote:
>> If the locale is zh_CN.gbk or zh_CN.gb2312, then, after
>> starting Emacs, I use X input method (*fcitx*) to input
>> some Chinese characters. It will display correctly. After
>> I changed locale to zh_CN.utf8.If I use X input method
>> (*fcitx*) to do the same input, I will get =8e4=8bd=8a0
>> such kind of chars.
>> 
> ....

>> And I also noticed that after I opened a file which is in
>> utf-8 encoding. It will load four more libraries.
>> 
>> subst-jis subst-ksc subst-big5 subst-gb2312
>> 
>> So I tried to load it manually. But Not works for manual
>> loading...
>>   
>> 
> Loading files should not have side-effects, so that is
> expected. You need to call the appropriate functions. In
> this case, utf-translate-cjk-load-tables is the user level
> function that loads and sets up these tables.

It seems that more and more users start using UTF-8 locale.
set-language-environment already has a code to call
utf-translate-cjk-load-tables if it was previously called in
the different language enviroment.

I've just installed the attached fix which calls
utf-translate-cjk-load-tables when one of CJK lang. env. is
selected even if it's not yet called previously.

So, in the latest code, you don't need any special setting.

> I don't understand enough about the auto-loading of the
> tables to know why it works when utf-8 files containing
> CJK characters are loaded, but not for utf-8 keyboard
> input. But at least the above might give you a better work
> around for your .emacs.

On reading a file, utf-8-post-read-conversion is called and
it (re)loads the tables if necessary.  But, the decoding of
keyboard input via XIM is done in handle_one_xevent of
xterm.c, and I'm not sure we can call Lisp there.  So, I
dared not call post-read-conversion function there.

---
Kenichi Handa
address@hidden

2005-09-23  Kenichi Handa  <address@hidden>

        * international/mule-cmds.el (set-language-environment): Don't
        check utf-translate-cjk-lang-env is nil or not on deciding if we
        have to call utf-translate-cjk-load-tables.

Index: mule-cmds.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/international/mule-cmds.el,v
retrieving revision 1.281
retrieving revision 1.282
diff -c -r1.281 -r1.282
*** mule-cmds.el        1 Sep 2005 14:30:30 -0000       1.281
--- mule-cmds.el        23 Sep 2005 02:12:37 -0000      1.282
***************
*** 1901,1907 ****
      (if (functionp func)
        (funcall func)))
    (if (and utf-translate-cjk-mode
-          utf-translate-cjk-lang-env
           (not (eq utf-translate-cjk-lang-env language-name))
           (catch 'tag
             (dolist (charset (get-language-info language-name 'charset))
--- 1901,1906 ----