[Fontconfig] How to disable the "global advance" for CJK fonts?

[Ambrose Li]

Hi,

sorry if this has been asked before. Is there an "official" way
to disable the "global advance" for CJK fonts? From what I've
read in fonts.conf, this should be possible. But when I tried
it in local.conf, I did not get any results. fontconfig version
is 2.3.0.

(In fact, from the looks of how my mozilla renders pages, it
looks like even the default list in fonts.conf is not working)-:

Thanks very much in advance.

regards,
- ambrose