lib/thor/parser/arguments.rb in thor-1.0.1 vs lib/thor/parser/arguments.rb in thor-1.1.0

@@ -28,10 +28,14 @@
       @non_assigned_required = []
       @switches = arguments
 
       arguments.each do |argument|
         if !argument.default.nil?
-          @assigns[argument.human_name] = argument.default
+          begin
+            @assigns[argument.human_name] = argument.default.dup
+          rescue TypeError  # Compatibility shim for un-dup-able Fixnum in Ruby < 2.4
+            @assigns[argument.human_name] = argument.default
+          end
         elsif argument.required?
           @non_assigned_required << argument
         end
       end
     end