···11-" Turn backup off, since most stuff is in SVN, git etc. anyway...
22-set nobackup
33-set updatecount=10
44-55-" Keep undo history across sessions, by storing in file.
66-" Only works all the time.
77-silent !mkdir -p ~/.cache/backups > /dev/null 2>&1
88-set undodir=~/.cache/backups
99-set undofile