module Thor::Shell

def _shared_configuration #:nodoc:

:nodoc:

Allow shell to be shared between invocations. 
def _shared_configuration #:nodoc:
  super.merge!(shell: shell)
end

def initialize(args = [], options = {}, config = {})


MyScript.new [1.0], { :foo => :bar }, :shell => Thor::Shell::Basic.new

end
argument :first, :type => :numeric
class MyScript < Thor

==== Examples

shell:: An instance of the shell to be used.
==== Configuration

Add shell to initialize config values. 
def initialize(args = [], options = {}, config = {})
  super
  self.shell = config[:shell]
  shell.base ||= self if shell.respond_to?(:base)
end

def shell

it gets a default shell from Thor::Base.shell.
Holds the shell for the given Thor instance. If no shell is given, 
def shell
  @shell ||= Thor::Base.shell.new
end

def with_padding

Yields the given block with padding. 
def with_padding
  shell.padding += 1
  yield
ensure
  shell.padding -= 1
end