setting the hostname

[sdarwin]

Let's say you have a server whose shortname is oak, and fully qualified name is oak.trees.com, as in this forum thread: http://ubuntuforums.org/showthread.php?t=1984993

The file /etc/hostname should be:
oak

The file /etc/hosts should be:
127.0.0.1 localhost
127.0.1.1 oak.trees.com oak

The command:
hostname -f
would show:
oak.trees.com

The command:
hostname
would show:
oak

On the other hand, what appears to be happening with this playbook:

• The command hostname incorrectly results in:
  oak.trees.com
• In file /etc/hosts , 127.0.0.1 is being modified instead of 127.0.1.1
• it is not computing the shortname correctly, which would be to remove everything after the first dot, so that a.b.c.d.e would become just a.

[sourcejedi]

i.e. regarding the shortname,

hostname_hostname.split('.')[:-1]|join('.')

should be

hostname_hostname.split('.')[0]

in both README and defaults/main.yml

[boldandbusted]

This seems like a pretty critical flaw. Is this problem still present?