There is that question on StackOverflow. I was wondering if passing arguments as a Collection to include function is against some ideas behind julia. Because if not, I think it could be a useful feature. As of now you are either required to modify your script with the suggested isdefined() check or redefine ARGS explicitly which results in a warning.
I think It would be nice as it would for example streamline using others’ scripts that are not written as modules from within your own ones.