delegate.rb: refix r43682

* lib/delegate.rb (Delegator#send): separate from method_missing so
  that super calls proper method.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43727 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Nov 20 01:27:33 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/delegate.rb (Delegator#send): separate from method_missing so
+	  that super calls proper method.
+
 Tue Nov 19 23:38:49 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (--with-os-version-style): option to transform target

lib/delegate.rb

@@ -74,7 +74,18 @@ class Delegator < BasicObject
       $@.delete_if {|t| %r"\A#{Regexp.quote(__FILE__)}:#{__LINE__-2}:"o =~ t} if $@
     end
   end
-  alias send method_missing
+
+  #
+  # Handles the magic of delegation through \_\_getobj\_\_.
+  #
+  def send(m, *args, &block)
+    target = self.__getobj__
+    begin
+      target.respond_to?(m) ? target.__send__(m, *args, &block) : super(m, *args, &block)
+    ensure
+      $@.delete_if {|t| %r"\A#{Regexp.quote(__FILE__)}:#{__LINE__-2}:"o =~ t} if $@
+    end
+  end
 
   #
   # Checks for a method provided by this the delegate object by forwarding the

test/test_delegate.rb

@@ -145,4 +145,13 @@ class TestDelegateClass < Test::Unit::TestCase
     assert_nothing_raised(ArgumentError) {d.open}
     assert_nothing_raised(ArgumentError) {d.send(:open)}
   end
+
+  def test_send_method_in_delegator
+    d = Class.new(SimpleDelegator) do
+      def foo
+        "foo"
+      end
+    end.new(Object.new)
+    assert_equal("foo", d.send(:foo))
+  end
 end