singleton_method_added

Invoked as a callback whenever a singleton method is added to the receiver.

   module Chatty
     def Chatty.singleton_method_added(id)
       puts "Adding #{id.id2name}"
     end
     def self.one()     end
     def two()          end
     def Chatty.three() end
   end

produces:

   Adding singleton_method_added
   Adding one
   Adding three