2 files changed, 4 insertions, 29 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/duplicable.rb b/activesupport/lib/active_support/core_ext/object/duplicable.rb
index 9d1630bb7c..dd63b64c77 100644
--- a/activesupport/lib/active_support/core_ext/object/duplicable.rb
+++ b/activesupport/lib/active_support/core_ext/object/duplicable.rb
@@ -81,30 +81,6 @@ class Numeric
   end
 end
 
-class Class
-  # Classes are not duplicable:
-  #
-  #  c = Class.new # => #<Class:0x10328fd80>
-  #  c.dup         # => #<Class:0x10328fd80>
-  #
-  # Note +dup+ returned the same class object.
-  def duplicable?
-    false
-  end
-end
-
-class Module
-  # Modules are not duplicable:
-  #
-  #  m = Module.new # => #<Module:0x10328b6e0>
-  #  m.dup          # => #<Module:0x10328b6e0>
-  #
-  # Note +dup+ returned the same module object.
-  def duplicable?
-    false
-  end
-end
-
 require 'bigdecimal'
 class BigDecimal
   begin
diff --git a/activesupport/lib/active_support/core_ext/object/instance_variables.rb b/activesupport/lib/active_support/core_ext/object/instance_variables.rb
index 91fdf93eb2..40821fd619 100644
--- a/activesupport/lib/active_support/core_ext/object/instance_variables.rb
+++ b/activesupport/lib/active_support/core_ext/object/instance_variables.rb
@@ -1,6 +1,6 @@
 class Object
-  # Returns a hash that maps instance variable names without "@" to their
-  # corresponding values. Keys are strings both in Ruby 1.8 and 1.9.
+  # Returns a hash with string keys that maps instance variable names without "@" to their
+  # corresponding values.
   #
   #   class C
   #     def initialize(x, y)
@@ -9,12 +9,11 @@ class Object
   #   end
   #
   #   C.new(0, 1).instance_values # => {"x" => 0, "y" => 1}
-  def instance_values #:nodoc:
+  def instance_values
     Hash[instance_variables.map { |name| [name[1..-1], instance_variable_get(name)] }]
   end
 
-  # Returns an array of instance variable names including "@". They are strings
-  # both in Ruby 1.8 and 1.9.
+  # Returns an array of instance variable names including "@".
   #
   #   class C
   #     def initialize(x, y)