1 files changed, 12 insertions, 2 deletions
diff --git a/lib/yaml/dbm.rb b/lib/yaml/dbm.rb
index 07441f53ad..976fdb3bb6 100644
--- a/lib/yaml/dbm.rb
+++ b/lib/yaml/dbm.rb
@@ -57,10 +57,20 @@ class DBM < ::DBM
     end
 
     # Deprecated, used YAML::DBM#key instead.
+    # ----
+    # Note:
+    # YAML::DBM#index makes warning from internal of ::DBM#index.
+    # It says 'DBM#index is deprecated; use DBM#key', but DBM#key
+    # behaves not same as DBM#index.
+    #
     def index( keystr )
         super( keystr.to_yaml )
     end
 
+    def key( keystr )
+        invert[keystr]
+    end
+
     # Returns an array containing the values associated with the given keys.
     def values_at( *keys )
         keys.collect { |k| fetch( k ) }
@@ -185,8 +195,8 @@ class DBM < ::DBM
     #
     # Returns +self+.
     def update( hsh )
-        hsh.keys.each do |k|
-            self.store( k, hsh.fetch( k ) )
+        hsh.each_pair do |k,v|
+            self.store( k, v )
         end
         self
     end