lib/surface_master/interaction.rb in surface_master-0.4.1 vs lib/surface_master/interaction.rb in surface_master-0.5.0

@@ -74,10 +74,10 @@
     end
 
   protected
 
     def expand(list)
-      list.map { |ll| ll.respond_to?(:to_a) ? ll.to_a : ll }.flatten
+      Array(list).map { |ll| ll.respond_to?(:to_a) ? ll.to_a : ll }.flatten
     end
 
     def guard_input_and_reset_at_end!(&block)
       block.call
     rescue Portmidi::DeviceError => e