6 files changed, 40 insertions, 9 deletions
diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index ac27dc640e..3b905b1d24 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,3 +1,8 @@
+*   Add Integer#positive? and Integer#negative? query methods in the vein of Fixnum#zero?
+    This makes it nicer to do things like bunch_of_numbers.select(&:positive?).
+
+    *DHH*
+
 *   Encoding ActiveSupport::TimeWithZone to YAML now preserves the timezone information.
 
     Fixes #9183.
diff --git a/activesupport/README.rdoc b/activesupport/README.rdoc
index a6424a353a..cd72f53821 100644
--- a/activesupport/README.rdoc
+++ b/activesupport/README.rdoc
@@ -10,7 +10,7 @@ outside of Rails.
 
 The latest version of Active Support can be installed with RubyGems:
 
-  % [sudo] gem install activesupport
+  % gem install activesupport
 
 Source code can be downloaded as part of the Rails project on GitHub:
 
diff --git a/activesupport/lib/active_support/core_ext/integer.rb b/activesupport/lib/active_support/core_ext/integer.rb
index a44a1b4c74..f5b185b42b 100644
--- a/activesupport/lib/active_support/core_ext/integer.rb
+++ b/activesupport/lib/active_support/core_ext/integer.rb
@@ -1,3 +1,4 @@
 require 'active_support/core_ext/integer/multiple'
 require 'active_support/core_ext/integer/inflections'
+require 'active_support/core_ext/integer/inquiry'
 require 'active_support/core_ext/integer/time'
diff --git a/activesupport/lib/active_support/core_ext/integer/inquiry.rb b/activesupport/lib/active_support/core_ext/integer/inquiry.rb
new file mode 100644
index 0000000000..17a04d4d63
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/integer/inquiry.rb
@@ -0,0 +1,19 @@
+class Integer
+  # Returns true if the number is positive.
+  #
+  #   1.positive?  # => true
+  #   0.positive?  # => false
+  #   -1.positive? # => false
+  def positive?
+    self > 0
+  end
+
+  # Returns true if the number is negative.
+  #
+  #   -1.negative? # => true
+  #   0.negative?  # => false
+  #   1.negative?  # => false
+  def negative?
+    self < 0
+  end
+end
diff --git a/activesupport/lib/active_support/json/decoding.rb b/activesupport/lib/active_support/json/decoding.rb
index 35548f3f56..2932954f03 100644
--- a/activesupport/lib/active_support/json/decoding.rb
+++ b/activesupport/lib/active_support/json/decoding.rb
@@ -9,20 +9,14 @@ module ActiveSupport
   module JSON
     # matches YAML-formatted dates
     DATE_REGEX = /^(?:\d{4}-\d{2}-\d{2}|\d{4}-\d{1,2}-\d{1,2}[T \t]+\d{1,2}:\d{2}:\d{2}(\.[0-9]*)?(([ \t]*)Z|[-+]\d{2}?(:\d{2})?))$/
-    
+
     class << self
       # Parses a JSON string (JavaScript Object Notation) into a hash.
       # See http://www.json.org for more info.
       #
       #   ActiveSupport::JSON.decode("{\"team\":\"rails\",\"players\":\"36\"}")
       #   => {"team" => "rails", "players" => "36"}
-      def decode(json, options = {})
-        if options.present?
-          raise ArgumentError, "In Rails 4.1, ActiveSupport::JSON.decode no longer " \
-            "accepts an options hash for MultiJSON. MultiJSON reached its end of life " \
-            "and has been removed."
-        end
-
+      def decode(json)
         data = ::JSON.parse(json, quirks_mode: true)
 
         if ActiveSupport.parse_json_times
diff --git a/activesupport/test/core_ext/integer_ext_test.rb b/activesupport/test/core_ext/integer_ext_test.rb
index 41736fb672..6eeadb2ace 100644
--- a/activesupport/test/core_ext/integer_ext_test.rb
+++ b/activesupport/test/core_ext/integer_ext_test.rb
@@ -27,4 +27,16 @@ class IntegerExtTest < ActiveSupport::TestCase
     assert_equal 'st', 1.ordinal
     assert_equal 'th', 8.ordinal
   end
+
+  def test_positive
+    assert 1.positive?
+    assert_not 0.positive?
+    assert_not -1.positive?
+  end
+
+  def test_negative
+    assert -1.negative?
+    assert_not 0.negative?
+    assert_not 1.negative?
+  end
 end