super instead alias_method_chain

gistfile1.rb

class A
  def foo
    puts 'A#foo'
  end
end

class B < A
  def foo
    super  
    puts 'B#foo'
  end
end

B.new.foo
=> A#foo
=> B#foo  

--- #2 

module A
  def foo
    puts 'A#foo'
  end
end

class B
  include A

  def foo
    super
    puts 'B#foo'
  end
end

B.new.foo

=> A#foo
=> B#foo

-- #3

module A
  def foo
    puts 'A#foo'
  end
end

module B
  def foo
    puts 'B#foo'
  end
end

class C
  include B
  include A
end

C.new.foo
puts "foo method owner is #{ C.new.method(:foo).owner.inspect }"

B#foo
foo method owner is B

-- #4

module A
  def foo
    puts 'A#foo'
  end
end

module B
  def foo
    puts 'B#foo'
  end
end

class C
  include B
  include A

  def foo
    super
    puts 'C#foo'
  end
end

C.new.foo

=> A#foo
=> C#foo