Let's drop unnecessary laguages from fontconfig cache instead of
checking it at runtime.
We have a template to apply for certain language only. this is
necessary for languages particularly which has similar coverage like
CJK and Arabic etc.
However this evaluation always happens when applications are going to
query a font with API. the one might be trivial but it might be not if
a lot of queries happens.
I'd propose to drop those unnecessary and problematic languages for a
font from fontconfig cache instead of testing a language at runtime.
it can be done like:
<edit name="lang" mode="assign">
This is evaluated only when creating/updating fontconfig caches by
fc-cache. then the targeted cache doesn't have it and matcher won't
pick it up for a certain language anymore.
Well, the recipe is a bit complicated. we may need a syntax sugar for