* ext/psych/lib/psych/visitors/to_ruby.rb: merge keys with a hash

  should merge the hash in to the parent.
* test/psych/test_merge_keys.rb: test for change. Fixes GH ruby#202

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47317 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Sat Aug 30 06:10:39 2014  Aaron Patterson <[email protected]>
+
+	* ext/psych/lib/psych/visitors/to_ruby.rb: merge keys with a hash
+	  should merge the hash in to the parent.
+	* test/psych/test_merge_keys.rb: test for change. Fixes GH #202
+
 Sat Aug 30 06:00:26 2014  Aaron Patterson <[email protected]>
 
 	* ext/psych/lib/psych/visitors/to_ruby.rb: quoted "<<" strings

ext/psych/lib/psych/visitors/to_ruby.rb

@@ -307,7 +307,7 @@ def revive_hash hash, o
 
           if key == '<<' && k.tag != "tag:yaml.org,2002:str"
             case v
-            when Nodes::Alias
+            when Nodes::Alias, Nodes::Mapping
               begin
                 hash.merge! val
               rescue TypeError

test/psych/test_merge_keys.rb

@@ -6,6 +6,16 @@ class Product
       attr_reader :bar
     end
 
+    def test_merge_key_with_bare_hash
+      doc = Psych.load <<-eodoc
+map:
+  <<:
+    hello: world
+      eodoc
+      hash = { "map" => { "hello" => "world" } }
+      assert_equal hash, doc
+    end
+
     def test_roundtrip_with_chevron_key
       h = {}
       v = { 'a' => h, '<<' => h }