module Utils::IRB::Shell

def irb_methods(obj = self)

methods, but including obj's eigenmethods.
Return instance methods of obj's class without the inherited/mixed in

def irb_methods(obj = self)
  methods = obj.class.ancestors[1..-1].inject(obj.methods) do |all, a|
    all -= a.instance_methods
  end
  irb_wrap_methods obj, methods
end