lib/option.rb in option-0.1.1 vs lib/option.rb in option-0.2.0

@@ -2,10 +2,13 @@
 
   def or_nil
   end
 
   def ==(that)
-    or_nil == that.or_nil
+    case that
+      when OptionClass then or_nil == that.or_nil
+      else or_nil == that
+    end
   end
 end
 
 class SomeClass < OptionClass