dir /w column distance

I would like to be able to set the distance between the columns displayed with "dir" using the "/w" option (or gladly accept a smaller default). The current default (5) produces too much "overhead".

What about an option to "dir" that works like Linux's "ls -m", i.e. output all names with just one space in between (not creating any column structure)?

Background: I often use "dir /w" to display "big" directories.