Comment 15 for bug 475889

(From update of attachment 34392)
Same issue is appearing here, in this case 'Helvetica Condensed' and 'Helvetica
Black' are both being registered as their own family and also as 'Helvetica',
resulting in duplicate style entries in the Helvetica family, and the rendering
of Helvetica as 'Helvetica Condensed'.

I am using truetype versions of these fonts, I've attatched output of fc-query
for each font.

fontconfig version 2.8.0 on archlinux.