I've run into bizarre behavior with windows command lines plenty of times before, but I'd never put all the pieces together and realized that:
a) windows really does pass around unadorned monolithic strings containing the entire command line of an executed command, and
b) there's no parsing standard for command lines in windows
sigh, windows
Need someone who knows more about EU law to chime in here: does this mean valve et al will be forced to implement a way for users to resell/transfer games to other users?