io.files.unique: Better docs for with-unique-directory.
io.files.unique: Better docs for with-unique-directory.

bpollack/factor,nicolas-p/factor,dch/factor,bpollack/factor,dch/factor,AlexIljin/factor,nicolas-p/factor,slavapestov/factor,factor/factor,nicolas-p/factor,factor/factor,factor/factor,AlexIljin/factor,AlexIljin/factor,tgunr/factor,tgunr/factor,dch/factor,factor/factor,mrjbq7/factor,AlexIljin/factor,bjourne/factor,nicolas-p/factor,bjourne/factor,bpollack/factor,nicolas-p/factor,tgunr/factor,mrjbq7/factor,mrjbq7/factor,bjourne/factor,slavapestov/factor,slavapestov/factor,mrjbq7/factor,nicolas-p/factor,tgunr/factor,mrjbq7/factor,bpollack/factor,AlexIljin/factor,bjourne/factor,slavapestov/factor,nicolas-p/factor,bjourne/factor,factor/factor,slavapestov/factor,AlexIljin/factor,mrjbq7/factor,bpollack/factor,bpollack/factor,bjourne/factor,dch/factor,dch/factor,factor/factor,tgunr/factor,slavapestov/factor,bjourne/factor,bpollack/factor,tgunr/factor,AlexIljin/factor,dch/factor,slavapestov/factor