diff --git a/activerecord/README.rdoc b/activerecord/README.rdoc
index c813b22f3b..969e97913d 100644
--- a/activerecord/README.rdoc
+++ b/activerecord/README.rdoc
@@ -19,9 +19,9 @@ A short rundown of some of the major features:
 
    class Product < ActiveRecord::Base
    end
-  
+
   {Learn more}[link:classes/ActiveRecord/Base.html]
-  
+
 The Product class is automatically mapped to the table named "products",
 which might look like this:
 
@@ -33,7 +33,7 @@ which might look like this:
 
 This would also define the following accessors: `Product#name` and
 `Product#name=(new_name)`.
-  
+
 
 * Associations between objects defined by simple class methods.
 
diff --git a/activerecord/lib/active_record/attribute_assignment.rb b/activerecord/lib/active_record/attribute_assignment.rb
index 816fb51942..c4cf084a04 100644
--- a/activerecord/lib/active_record/attribute_assignment.rb
+++ b/activerecord/lib/active_record/attribute_assignment.rb
@@ -13,9 +13,9 @@ module ActiveRecord
     # exception is raised.
     #
     #   cat = Cat.new(name: "Gorby", status: "yawning")
-    #   cat.attributes # =>  { "name" => "Gorby", "status" => "yawning" }
+    #   cat.attributes # =>  { "name" => "Gorby", "status" => "yawning", "created_at" => nil, "updated_at" => nil}
     #   cat.assign_attributes(status: "sleeping")
-    #   cat.attributes # =>  { "name" => "Gorby", "status" => "sleeping" }
+    #   cat.attributes # =>  { "name" => "Gorby", "status" => "sleeping", "created_at" => nil, "updated_at" => nil }
     #
     # New attributes will be persisted in the database when the object is saved.
     #
diff --git a/guides/source/3_2_release_notes.md b/guides/source/3_2_release_notes.md
index cdcde67869..2416e1a228 100644
--- a/guides/source/3_2_release_notes.md
+++ b/guides/source/3_2_release_notes.md
@@ -562,4 +562,4 @@ Credits
 
 See the [full list of contributors to Rails](http://contributors.rubyonrails.org/) for the many people who spent many hours making Rails, the stable and robust framework it is. Kudos to all of them.
 
-Rails 3.2 Release Notes were compiled by [Vijay Dev](https://github.com/vijaydev.)
+Rails 3.2 Release Notes were compiled by [Vijay Dev](https://github.com/vijaydev).
diff --git a/railties/lib/rails/generators.rb b/railties/lib/rails/generators.rb
index 04ce38f841..2a0148fe9d 100644
--- a/railties/lib/rails/generators.rb
+++ b/railties/lib/rails/generators.rb
@@ -161,6 +161,11 @@ module Rails
       end
     end
 
+    # Returns an array of generator namespaces that are hidden.
+    # Generator namespaces may be hidden for a variety of reasons.
+    # Some are aliased such as "rails:migration" and can be
+    # invoked with the shorter "migration", others are private to other generators
+    # such as "css:scaffold".
     def self.hidden_namespaces
       @hidden_namespaces ||= begin
         orm      = options[:rails][:orm]