there seems to be a problem with the powerline fonts after the update to use the new fonts directory:
$ xset +fp /usr/local/share/fonts/powerline
xset: bad font path element (#0), possible causes are:
Directory does not exist or has wrong permissions
Directory missing fonts.dir
Incorrect font server address or syntax
i don't recall this being a problem before
-f
--
not breaking the rules, just testing the elasticity...
