Hash#to_xml handles keys with the same name as Kernel methods. Closes #6613.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5521 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/CHANGELOG

 *SVN*
 
+* Hash#to_xml handles keys with the same name as Kernel methods.  #6613 [Catfish]
+
 * Added Time#end_of_day to get 23:59:59 of that day [DHH]
 
 * Don't quote hash keys in Hash#to_json if they're valid JavaScript identifiers.  Disable this with ActiveSupport::JSON.unquote_hash_key_identifiers = false if you need strict JSON compliance. [Sam Stephenson]

activesupport/lib/active_support/core_ext/hash/conversions.rb

@@ -35,7 +35,7 @@ def to_xml(options = {})
           dasherize = !options.has_key?(:dasherize) || options[:dasherize]
           root = dasherize ? options[:root].to_s.dasherize : options[:root].to_s
 
-          options[:builder].__send__(root) do
+          options[:builder].__send__(:method_missing, root) do
             each do |key, value|
               case value
                 when ::Hash

activesupport/test/core_ext/hash_ext_test.rb

@@ -458,4 +458,15 @@ def test_should_copy_the_default_value_when_converting_to_hash_with_indifferent_
     hash_wia = hash.with_indifferent_access
     assert_equal 3, hash_wia.default
   end
+
+  # The XML builder seems to fail miserably when trying to tag something
+  # with the same name as a Kernel method (throw, test, loop, select ...)
+  def test_kernel_method_names_to_xml
+    hash     = { :throw => { :ball => 'red' } }
+    expected = '<person><throw><ball>red</ball></throw></person>'
+
+    assert_nothing_raised do
+      assert_equal expected, hash.to_xml(@xml_options)
+    end
+  end
 end