13 files changed, 24 insertions, 16 deletions
diff --git a/activesupport/lib/active_support/callbacks.rb b/activesupport/lib/active_support/callbacks.rb
index b230bb8a40..c669630e47 100644
--- a/activesupport/lib/active_support/callbacks.rb
+++ b/activesupport/lib/active_support/callbacks.rb
@@ -1,7 +1,7 @@
 require 'active_support/core_ext/array/wrap'
 require 'active_support/core_ext/class/inheritable_attributes'
 require 'active_support/core_ext/kernel/reporting'
-require 'active_support/core_ext/object/singleton_class'
+require 'active_support/core_ext/kernel/singleton_class'
 
 module ActiveSupport
   # Callbacks are hooks into the lifecycle of an object that allow you to trigger logic
diff --git a/activesupport/lib/active_support/core_ext/class/attribute.rb b/activesupport/lib/active_support/core_ext/class/attribute.rb
index 577d5cbf45..725acad43a 100644
--- a/activesupport/lib/active_support/core_ext/class/attribute.rb
+++ b/activesupport/lib/active_support/core_ext/class/attribute.rb
@@ -1,4 +1,4 @@
-require 'active_support/core_ext/object/singleton_class'
+require 'active_support/core_ext/kernel/singleton_class'
 require 'active_support/core_ext/module/delegation'
 require 'active_support/core_ext/module/remove_method'
 
diff --git a/activesupport/lib/active_support/core_ext/class/delegating_attributes.rb b/activesupport/lib/active_support/core_ext/class/delegating_attributes.rb
index 12caa76c98..29bf7c0f3d 100644
--- a/activesupport/lib/active_support/core_ext/class/delegating_attributes.rb
+++ b/activesupport/lib/active_support/core_ext/class/delegating_attributes.rb
@@ -1,6 +1,6 @@
 require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/array/extract_options'
-require 'active_support/core_ext/object/singleton_class'
+require 'active_support/core_ext/kernel/singleton_class'
 require 'active_support/core_ext/module/remove_method'
 
 class Class
diff --git a/activesupport/lib/active_support/core_ext/kernel.rb b/activesupport/lib/active_support/core_ext/kernel.rb
index c3bed14f63..01cfe7fc10 100644
--- a/activesupport/lib/active_support/core_ext/kernel.rb
+++ b/activesupport/lib/active_support/core_ext/kernel.rb
@@ -2,3 +2,4 @@ require 'active_support/core_ext/kernel/reporting'
 require 'active_support/core_ext/kernel/agnostics'
 require 'active_support/core_ext/kernel/requires'
 require 'active_support/core_ext/kernel/debugger'
+require 'active_support/core_ext/kernel/singleton_class'
diff --git a/activesupport/lib/active_support/core_ext/object/singleton_class.rb b/activesupport/lib/active_support/core_ext/kernel/singleton_class.rb
index 8dee54e71b..33612155fb 100644
--- a/activesupport/lib/active_support/core_ext/object/singleton_class.rb
+++ b/activesupport/lib/active_support/core_ext/kernel/singleton_class.rb
@@ -1,12 +1,12 @@
-class Object
+module Kernel
   # Returns the object's singleton class.
   def singleton_class
     class << self
       self
     end
-  end unless respond_to?(:singleton_class)
+  end unless respond_to?(:singleton_class) # exists in 1.9.2
 
-  # class_eval on an object acts like singleton_class_eval.
+  # class_eval on an object acts like singleton_class.class_eval.
   def class_eval(*args, &block)
     singleton_class.class_eval(*args, &block)
   end
diff --git a/activesupport/lib/active_support/core_ext/object.rb b/activesupport/lib/active_support/core_ext/object.rb
index 4f86d9d605..3a6100f776 100644
--- a/activesupport/lib/active_support/core_ext/object.rb
+++ b/activesupport/lib/active_support/core_ext/object.rb
@@ -5,7 +5,6 @@ require 'active_support/core_ext/object/try'
 
 require 'active_support/core_ext/object/conversions'
 require 'active_support/core_ext/object/instance_variables'
-require 'active_support/core_ext/object/singleton_class'
 require 'active_support/core_ext/object/misc'
 require 'active_support/core_ext/object/extending'
 
diff --git a/activesupport/lib/active_support/core_ext/string/output_safety.rb b/activesupport/lib/active_support/core_ext/string/output_safety.rb
index 3ee5bcaab4..b53929c2a3 100644
--- a/activesupport/lib/active_support/core_ext/string/output_safety.rb
+++ b/activesupport/lib/active_support/core_ext/string/output_safety.rb
@@ -1,5 +1,5 @@
 require 'erb'
-require 'active_support/core_ext/object/singleton_class'
+require 'active_support/core_ext/kernel/singleton_class'
 
 class ERB
   module Util
diff --git a/activesupport/lib/active_support/inflections.rb b/activesupport/lib/active_support/inflections.rb
index 8fb3fa9aa2..e7b5387ed7 100644
--- a/activesupport/lib/active_support/inflections.rb
+++ b/activesupport/lib/active_support/inflections.rb
@@ -51,6 +51,6 @@ module ActiveSupport
     inflect.irregular('move', 'moves')
     inflect.irregular('cow', 'kine')
 
-    inflect.uncountable(%w(equipment information rice money species series fish sheep))
+    inflect.uncountable(%w(equipment information rice money species series fish sheep jeans))
   end
 end
diff --git a/activesupport/lib/active_support/inflector/inflections.rb b/activesupport/lib/active_support/inflector/inflections.rb
index 785e245ea4..3caf78bc7d 100644
--- a/activesupport/lib/active_support/inflector/inflections.rb
+++ b/activesupport/lib/active_support/inflector/inflections.rb
@@ -148,7 +148,7 @@ module ActiveSupport
     def singularize(word)
       result = word.to_s.dup
 
-      if inflections.uncountables.include?(result.downcase)
+      if inflections.uncountables.any? { |inflection| result =~ /#{inflection}\Z/i }
         result
       else
         inflections.singulars.each { |(rule, replacement)| break if result.gsub!(rule, replacement) }
diff --git a/activesupport/lib/active_support/memoizable.rb b/activesupport/lib/active_support/memoizable.rb
index ca1cfedae3..9fb506fea1 100644
--- a/activesupport/lib/active_support/memoizable.rb
+++ b/activesupport/lib/active_support/memoizable.rb
@@ -1,4 +1,4 @@
-require 'active_support/core_ext/object/singleton_class'
+require 'active_support/core_ext/kernel/singleton_class'
 require 'active_support/core_ext/module/aliasing'
 
 module ActiveSupport
diff --git a/activesupport/test/core_ext/kernel_test.rb b/activesupport/test/core_ext/kernel_test.rb
index 1dfc283268..c22af89918 100644
--- a/activesupport/test/core_ext/kernel_test.rb
+++ b/activesupport/test/core_ext/kernel_test.rb
@@ -41,6 +41,17 @@ class KernelTest < Test::Unit::TestCase
   def test_silence_stderr_with_return_value
     assert_equal 1, silence_stderr { 1 }
   end
+
+  def test_singleton_class
+    o = Object.new
+    assert_equal class << o; self end, o.singleton_class
+  end
+  
+  def test_class_eval
+    o = Object.new
+    class << o; @x = 1; end
+    assert_equal 1, o.class_eval { @x }
+  end
 end
 
 class KernelSupressTest < Test::Unit::TestCase
diff --git a/activesupport/test/core_ext/object_and_class_ext_test.rb b/activesupport/test/core_ext/object_and_class_ext_test.rb
index 437bb78a4e..5e03389dc2 100644
--- a/activesupport/test/core_ext/object_and_class_ext_test.rb
+++ b/activesupport/test/core_ext/object_and_class_ext_test.rb
@@ -118,11 +118,6 @@ class ObjectTests < ActiveSupport::TestCase
     assert duck.acts_like?(:time)
     assert !duck.acts_like?(:date)
   end
-
-  def test_singleton_class
-    o = Object.new
-    assert_equal class << o; self end, o.singleton_class
-  end
 end
 
 class ObjectInstanceVariableTest < Test::Unit::TestCase
diff --git a/activesupport/test/inflector_test_cases.rb b/activesupport/test/inflector_test_cases.rb
index 8dad9d8155..29f87ac302 100644
--- a/activesupport/test/inflector_test_cases.rb
+++ b/activesupport/test/inflector_test_cases.rb
@@ -12,6 +12,8 @@ module InflectorTestCases
     "stack"       => "stacks",
     "wish"        => "wishes",
     "fish"        => "fish",
+    "jeans"       => "jeans",
+    "funky jeans" => "funky jeans",
 
     "category"    => "categories",
     "query"       => "queries",