Variable: dired-bind-vm
dired-bind-vm is a customizable variable defined in dired-x.el.gz.
Value
nil
Documentation
Non-nil means "V" runs dired-vm, otherwise "V" runs dired-rmail.
RMAIL files in the old Babyl format (used before Emacs 23.1)
contain "-*- rmail -*-" at the top, so dired-find-file
will run rmail on these files. New RMAIL files use the standard
mbox format, and so cannot be distinguished in this way.
Source Code
;; Defined in /usr/src/emacs/lisp/dired-x.el.gz
(defcustom dired-bind-vm nil
"Non-nil means \"V\" runs `dired-vm', otherwise \"V\" runs `dired-rmail'.
RMAIL files in the old Babyl format (used before Emacs 23.1)
contain \"-*- rmail -*-\" at the top, so `dired-find-file'
will run `rmail' on these files. New RMAIL files use the standard
mbox format, and so cannot be distinguished in this way."
:type 'boolean
:group 'dired-x)