Comment 2 for bug 622919

This is the contents of $PATH on my Ubuntu:
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

The fact that the first two directories are /usr/local/* ditto indicates that Ubuntu acknowledges the convention to use the prefix /usr/local when building and installing software from source, in order to keep it separated from package distributed software provided by the system. To be consistent and prevent problems like the one I described above, I believe that the Ubuntu configuration ought to include /usr/local/etc/xdg when setting $XDG_CONFIG_DIRS. I agree with David that nothing in the specification contradicts with that conclusion.