Font directory list
<dir>/usr/share/fonts</dir>
<dir>/usr/X11/lib/X11/fonts</dir> <dir>/opt/local/share/fonts</dir> <dir>/Library/Fonts</dir> <dir>/Network/Library/Fonts</dir> <dir>/System/Library/Fonts</dir>
<dir prefix="xdg">fonts</dir>
<!-- the following element will be removed in the future -->
<dir>~/.fonts</dir>
Should we add ~/Library/Fonts?