Provided by: Lubos Lunak <l.lunak@suse.cz>

However FcConfigUptoDate() doesn't seem to work. See the attached patch.
    First there's an obvious misplaced parenthesis making it return always
    false, and second, even this call fails to detect font changes (e.g.
    adding a new font to /usr/X11R6/lib/X11/fonts/truetype). The patch
    should fix that as well. The problem seems to be triggered by my
    fonts.conf specifying only /usr/X11R6/lib/X11/fonts , and therefore
    config->configDirs doesn't include subdirs, unlike config->fontDirs.