Subcommand help shows proper full command in task listing. [closes GH-168]

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## 0.6.4 (unreleased)
 
+  - Subcommand help shows proper full command in task listing. [GH-168]
   - SSH gives error message if `ssh` binary is not found. [GH-161]
   - SSH gives proper error message if VM is not running. [GH-167]
   - Fix some issues with undefined constants in command errors.

lib/vagrant/command/group_base.rb

@@ -87,13 +87,21 @@ module Vagrant
       # @param [String] description
       # @param [Hash] opts
       def self.register(usage, description, opts=nil)
-        CLI.register(self, Base.extract_name_from_usage(usage), usage, description, opts)
+        @_name = Base.extract_name_from_usage(usage)
+        CLI.register(self, @_name, usage, description, opts)
       end
 
       def initialize(*args)
         super
         initialize_environment(*args)
       end
+
+      protected
+
+      # Override the basename to include the subcommand name.
+      def self.basename
+        "#{super} #{@_name}"
+      end
     end
   end
 end