[tex-live] fc-cache documentation ?

[Élie Roux]

> Another issue is that (some?) fontconfig versions before 2.11 scan
> the user's font directory `~/.fonts' (or the equivalent directory of 
> Windows) again and again: A cache entry gets created but it is 
> immediately invalidated.  If you have a large amount of fonts in
> that directory, fontconfig slows down considerably.  Meanwhile,
> there's fix for this behaviour, so I recommend to upgrade to the
> latest fontconfig version 2.11.

Note also that fontconfig for Windows doesn't find fonts registered with
the registry, while other applications do, which can lead to some user
complains:

https://bugs.freedesktop.org/show_bug.cgi?id=90813

Thank you,
-- 
Elie