Variable: clean-buffer-list-delay-general
clean-buffer-list-delay-general is a customizable variable defined in
midnight.el.gz.
Value
3
Documentation
The number of days before any buffer becomes eligible for autokilling.
The autokilling is done by clean-buffer-list when it is in midnight-hook.
Currently displayed and/or modified (unsaved) buffers, as well as buffers
matching clean-buffer-list-kill-never-buffer-names and
clean-buffer-list-kill-never-regexps are excluded.
Source Code
;; Defined in /usr/src/emacs/lisp/midnight.el.gz
;;; clean-buffer-list stuff
(defcustom clean-buffer-list-delay-general 3
"The number of days before any buffer becomes eligible for autokilling.
The autokilling is done by `clean-buffer-list' when it is in `midnight-hook'.
Currently displayed and/or modified (unsaved) buffers, as well as buffers
matching `clean-buffer-list-kill-never-buffer-names' and
`clean-buffer-list-kill-never-regexps' are excluded."
:type 'natnum)