It works, but it needs to be cleaned up, the code is long and overly complex for what it needs to do. Also, we can remove the hack to cover for MoveFileEx bug as it isn't a bug anymore.
This is mostly done thanks to Greatlord (cmd.c is the hardest spot that is left). Anytime when you are handling a string that is taken from the commandline there should be no limit to the size.
We need more batch files like the one Royce made for "set /a". What out for if bugs when doing this... could lead to in the wrong direction when looking for a regression.