maas-cli with no arguments does not give usage

[Scott Moser]

If you invoke maas-cli with no arguments, it errors like below. Would'nt usage be more common (as shown further below).

$ maas-cli
usage: /usr/lib/python2.7/dist-packages/maascli/__main__.py [-h] {api} ...
/usr/lib/python2.7/dist-packages/maascli/__main__.py: error: too few arguments

$ maas-cli --help
usage: /usr/lib/python2.7/dist-packages/maascli/__main__.py [-h] {api} ...

Control MAAS from the command-line.

optional arguments:
  -h, --help show this help message and exit

commands:
  {api}
    api Interact with a remote MAAS server.

http://maas.ubuntu.com/

$ dpkg-query --show maas-cli
maas-cli 0.1+bzr1063+dfsg-0+1099+98~ppa0~quantal1

[Scott Moser (smoser)]

This seems like it affects all subcomands also:
$ maas-cli api maaslocal account
usage: /usr/lib/python2.7/dist-packages/maascli/__main__.py api maaslocal account
       [-h] {delete-authorisation-token,create-authorisation-token} ...
/usr/lib/python2.7/dist-packages/maascli/__main__.py api maaslocal account: error: too few arguments