delegate.rb: get rid of global function interference

* lib/delegate.rb (Delegator#send): override to get rid of global function interference.
  [Fixes GH-449]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43682 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 18 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index c9ea8acece..17bf1a3d46 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Nov 15 17:07:31 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/delegate.rb (Delegator#send): override to get rid of global function interference.
+	  [Fixes GH-449]
+
 Fri Nov 15 01:06:04 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/objspace/objspace_dump.c (dump_output): allow IO object as
diff --git a/lib/delegate.rb b/lib/delegate.rb
index a2ca46fafa..74b13aa8a3 100644
--- a/lib/delegate.rb
+++ b/lib/delegate.rb
@@ -74,6 +74,7 @@ class Delegator < BasicObject
       $@.delete_if {|t| %r"\A#{Regexp.quote(__FILE__)}:#{__LINE__-2}:"o =~ t} if $@
     end
   end
+  alias send method_missing
 
   #
   # Checks for a method provided by this the delegate object by forwarding the
diff --git a/test/test_delegate.rb b/test/test_delegate.rb
index a09451b88f..d816a62bf5 100644
--- a/test/test_delegate.rb
+++ b/test/test_delegate.rb
@@ -133,4 +133,16 @@ class TestDelegateClass < Test::Unit::TestCase
     assert_raise(NoMethodError, '[ruby-dev:40314]#4') {d.delegate_test_private}
     assert_raise(NoMethodError, '[ruby-dev:40314]#5') {d.send(:delegate_test_private)}
   end
+
+  def test_global_function
+    klass = Class.new do
+      def open
+      end
+    end
+    obj = klass.new
+    d = SimpleDelegator.new(obj)
+    assert_nothing_raised(ArgumentError) {obj.open}
+    assert_nothing_raised(ArgumentError) {d.open}
+    assert_nothing_raised(ArgumentError) {d.send(:open)}
+  end
 end