Comment 12 for bug 168960

for reference:
https://bugzilla.mozilla.org/show_bug.cgi?id=1162369

> All apps that use FcFontSetList of FcFontList are using rescan interval,
> whether they know it or not.

https://bugzilla.mozilla.org/show_bug.cgi?id=1056479#c63
https://github.com/behdad/fontconfig-monitor/blob/master/fontconfig-monitor.c

I won't be able to test (or write) any code for Windows, so you guys will have to tell me how to proceed. Should we open another bug report for the non-Windows fix? Or can someone provide some testing/code to see if we can get a Windows solution?