configurable.rb in mixlib-config-2.0.0.rc.3

- old
+ new

@@ -41,10 +41,15 @@
         if config.has_key?(@symbol)
           config[@symbol]
         elsif @default
           @default.call
         else
-          @default_value
+          begin
+            # Some things cannot be dup'd, and you won't know this till after the fact
+            config[@symbol] = @default_value.dup
+          rescue TypeError
+            @default_value
+          end
         end
       end
 
       def set(config, value)
         config[@symbol] = @writes_value ? @writes_value.call(value) : value