Fix NamedScope regex so methods containing "an" get delegated to proxy_found. [#901 state:resolved]

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

activerecord/lib/active_record/named_scope.rb

@@ -103,7 +103,7 @@ class Scope
       attr_reader :proxy_scope, :proxy_options
 
       [].methods.each do |m|
-        unless m =~ /(^__|^nil\?|^send|^object_id$|class|extend|^find$|count|sum|average|maximum|minimum|paginate|first|last|empty?|any?|respond_to?)/
+        unless m =~ /(^__|^nil\?|^send|^object_id$|class|extend|^find$|count|sum|average|maximum|minimum|paginate|first|last|empty\?|any\?|respond_to\?)/
           delegate m, :to => :proxy_found
         end
       end

activerecord/test/cases/named_scope_test.rb

@@ -249,6 +249,10 @@ def test_find_all_should_behave_like_select
     assert_equal Topic.base.select(&:approved), Topic.base.find_all(&:approved)
   end
 
+  def test_rand_should_select_a_random_object_from_proxy
+    assert Topic.approved.rand.is_a? Topic
+  end
+
   def test_should_use_where_in_query_for_named_scope
     assert_equal Developer.find_all_by_name('Jamis'), Developer.find_all_by_id(Developer.jamises)
   end