Requiring 'active_support/dependencies' changes how constant is resolved

README.md

Requiring 'active_support/dependencies' changes how constant is resolved

Without 'active_support/dependencies'

$ ruby constant_resolution.rb
inner - Hello
[Outer::Inner, Outer]
constant_resolution.rb:14:in `const_missing': uninitialized constant Outer::Inner::Hello (NameError)
	from constant_resolution.rb:19:in `<main>'

With 'active_support/dependencies'

$ ruby constant_resolution.rb
inner - Hello
[Outer::Inner, Outer]
outer - Hello
[Outer]

constant_resolution.rb

# require 'active_support/dependencies'

module Outer
  def self.const_missing(const_name)
    puts "outer - #{const_name}"
    puts Module.nesting.inspect
    'outer'
  end

  module Inner
    def self.const_missing(const_name)
      puts "inner - #{const_name}"
      puts Module.nesting.inspect
      super
    end
  end
end

Outer::Inner::Hello