[Fontconfig-bugs] [Bug 91958] Language Match problem for Chinese, Japanese and Korean

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91958

--- Comment #2 from Guo Yunhe <guoyunhebrave at gmail.com> ---
(In reply to Akira TAGOH from comment #1)
> it is hard to figure out the reason of that result by the part of
> configuration. I guess you may have other configuration that fontconfig
> determines that way. try FC_DEBUG=4 to see what kinda configuration you have
> or FC_DEBUG=3 to see how fontconfig evaluates fonts to determine the best
> font or FC_DEBUG=7 to see both.
> 
> in most cases, the sort of this claim isn't a bug in fontconfig but
> introduced by unexpected configurations.

How to use FC_DEBUG=7? Is it a command or paramater? Can you give me a full
command line that I can try?

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