This is "Won't Fix" upstream, and not something that we want to diverge from Debian on. See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=68561 for details. Essentially, we don't want to allow a '.' because of .dpkg-old and .dpkg-dist files. If you would still like this fixed in Ubuntu, I encourage you to work with upstream (Debian) on a fix.
This is "Won't Fix" upstream, and not something that we want to diverge from Debian on. See http:// bugs.debian. org/cgi- bin/bugreport. cgi?bug= 68561 for details. Essentially, we don't want to allow a '.' because of .dpkg-old and .dpkg-dist files. If you would still like this fixed in Ubuntu, I encourage you to work with upstream (Debian) on a fix.