dired-backup-diff

dired-backup-diff is an interactive autoloaded compiled Lisp function in `dired-aux.el'.


(dired-backup-diff &optional SWITCHES)

Diff this file with its backup file or vice versa.
Uses the latest backup, if there are several numerical backups.
If this file is a backup, diff it with its original.
The backup file is the first file given to `diff'.
With prefix arg, prompt for argument SWITCHES which is options for `diff'.