[Fontconfig] CJK Locale Inconsistencies.

[Pat Suwalski]

I didn't get any responses about this so I played until I got relatively 
good results.

First, I changed the DejaVu binding from "strong" to "same". This seemed 
to play nice with Flash.

Next, I applied the attached patch. It basically forces the locale 
environment to always be read as en_US.UTF-8.

What might be the negative side effects of that last patch? Is it 
performance?

Thanks!
--Pat

Pat Suwalski wrote:
> Hello,
> 
> I was wondering if anyone might have some insight into a fontconfig 
> problem I'm having. I'm hoping to solve it without actually changing 
> code, but that is always a possibility.
> 
> I installed an Arphic Chinese font. In the en_US.UTF-8 locale it looks 
> great, because programs like Firefox will use DejaVu for the latin text 
> and only use the Chinese characters from the Arphic font as needed.
> 
> In the zh_CN.UTF-8 locale it seems that the Arphic font magically has 
> priority. Pages in Firefox look terrible because it uses the cruddy 
> monotype latin characters from the Arphic font.
> 
> To work around this I made a strong binding for DejaVu Sans. This worked 
> well throughout, except it broke one program: Flash. I guess Flash isn't 
> smart enough to fall through font matches. It would attempt to get a 
> Chinese character, look in DejaVu Sans, not find it, and then not fall 
> through. So, it would draw a missing character box.
> 
> My most recent approach has been to actually edit the Arphic font, and 
> remove everything except the CJK glyphs. Then, without specifying a 
> strong binding for DejaVu, everything seems to work well in both 
> locales. However, this is a rather drastic approach that could have very 
> bad side effects in all sorts of places, like printing.
> 
> So, my question is, is there a way to make fontconfig behave in the 
> Chinese locale as it does in the English one?
> 
> Thanks,
> --Pat
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