ruby constant lookups

gistfile1.rb

#!/usr/bin/env ruby

X = 'hello'

module A
  X = 'world'
end

module A::B
  def self.tst
    puts "nesting: " + Module.nesting.map(&:name).join(' > ')
    puts "value: "   + X
  end
end

module A
  module C
    def self.tst
      puts "nesting: " + Module.nesting.map(&:name).join(' > ')
      puts "value: "   + X
    end
  end
end

A::B.tst
print "\n"
A::C.tst

=begin OUTPUT
nesting: A::B
value: hello

nesting: A::C > A
value: world
=end