"Yay for the wonderful "comma vee" extension that meant this didn't work on anything but Unix and even there some tools choked on it. Same for RCS and CVS ..."

"Yay for the wonderful "comma vee" extension that meant this didn't work on anything but Unix and even there some tools choked on it. Same for RCS and CVS ..." RCS and CVS use "filename,v". SCCS uses "s.filename".