Extending a Ruby module in another module, including the module methods

Question

Whenever I try to extend a ruby module, I lose the module methods. Neither include nor extend will do this. Consider the snippet:

module A 
  def self.say_         


        

Answer 1

I don't think there's any simple way to do it.

So here is a complex way:

module B
  class << self
    A.singleton_methods.each do |m|
      define_method m, A.method(m).to_proc
    end
  end
end

You can put it in a helper method like this:

class Module
  def include_module_methods(mod)
    mod.singleton_methods.each do |m|
      (class << self; self; end).send :define_method, m, mod.method(m).to_proc
    end
  end
end

module B
  include_module_methods A
end