opscode/chef — pull request #779 by gkarekinian (2013-05-24 10:12:35+00:00)
Title: Knife inheritance

This allows you to properly inherit from a class that inherits from
Chef::Knife. With this fix you inherit the options from the parent
class.

Only works with mixlib-cli that contains a fix for
http://tickets.opscode.com/browse/MIXLIB-14