* enum.c (enum_each_entry): new method #each_entry to pack values

  from yield into an array.

* lib/set.rb (Set#merge): use Enumerable#each_entry to implement
  Set compatible to 1.8 behavior.  [ruby-core:27985]

* lib/set.rb: replace is_a?(Enumerable) with respond_to?(:each)
  for duck typing.

* lib/set.rb (SortedSet#add): typo fixed.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26540 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/test/ruby/test_enum.rb b/test/ruby/test_enum.rb
index d252cef426..945661f4b9 100644
--- a/test/ruby/test_enum.rb
+++ b/test/ruby/test_enum.rb
@@ -219,6 +219,18 @@ class TestEnumerable < Test::Unit::TestCase
     assert_equal([55, 3628800], ret)
   end
 
+  class Foo
+    include Enumerable
+    def each
+      yield 1
+      yield 1,2
+    end
+  end
+
+  def test_each_entry
+    assert_equal([1, [1, 2]], Foo.new.each_entry.to_a)
+  end
+
   def test_zip
     assert_equal([[1,1],[2,2],[3,3],[1,1],[2,2]], @obj.zip(@obj))
     a = []