[forwarded from Debian bug#223352]
When aoncc___.fon (from http://www.aon-celtic.com/free/aoncari_pc_ps.zip) is
installed, it appears as such in fc-list:
Thus, it is matched for every font, while it contains no glyphs.
In fact, I don't think it is a good idea to read these .fon files at all. Do
they contain any valuable information? file(1) lists them as MS-DOS executables.
Nice font. Fontconfig now checks for empty family/style names before using
them. If empty, it uses the filenames (yuck) instead.