* ext/psych/lib/psych/visitors/to_ruby.rb: merge key values that

  contain something besides a hash should be left in tact.

* test/psych/test_merge_keys.rb: test for change

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38788 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 6 deletions

diff --git a/ext/psych/lib/psych/visitors/to_ruby.rb b/ext/psych/lib/psych/visitors/to_ruby.rb
index 725f1f9f5d..9ccf420c34 100644
--- a/ext/psych/lib/psych/visitors/to_ruby.rb
+++ b/ext/psych/lib/psych/visitors/to_ruby.rb
@@ -263,28 +263,42 @@ module Psych
       def revive_hash hash, o
         @st[o.anchor] = hash if o.anchor
 
-          o.children.each_slice(2) { |k,v|
+        o.children.each_slice(2) { |k,v|
           key = accept(k)
+          val = accept(v)
 
           if key == '<<'
             case v
             when Nodes::Alias
-              hash.merge! accept(v)
+              begin
+                hash.merge! val
+              rescue TypeError
+                hash[key] = val
+              end
             when Nodes::Sequence
-              accept(v).reverse_each do |value|
-                hash.merge! value
+              begin
+                h = {}
+                val.reverse_each do |value|
+                  h.merge! value
+                end
+                hash.merge! h
+              rescue TypeError
+                hash[key] = val
               end
             else
-              hash[key] = accept(v)
+              hash[key] = val
             end
           else
-            hash[key] = accept(v)
+            hash[key] = val
           end
 
         }
         hash
       end
 
+      def merge_key hash, key, val
+      end
+
       def revive klass, node
         s = klass.allocate
         @st[node.anchor] = s if node.anchor