Variable: undelete-frame-mode
undelete-frame-mode is a customizable variable defined in frame.el.gz.
Value
nil
Documentation
Non-nil if Undelete-Frame mode is enabled.
See the undelete-frame-mode(var)/undelete-frame-mode(fun) command
for a description of this minor mode.
Setting this variable directly does not take effect;
either customize it (see the info node (emacs)Easy Customization)
or call the function undelete-frame-mode(var)/undelete-frame-mode(fun).
Probably introduced at or before Emacs version 29.1.
Key Bindings
Source Code
;; Defined in /usr/src/emacs/lisp/frame.el.gz
(define-minor-mode undelete-frame-mode
"Enable the `undelete-frame' command."
:group 'frames
:global t
(if undelete-frame-mode
(add-hook 'delete-frame-functions
#'undelete-frame--save-deleted-frame -75)
(remove-hook 'delete-frame-functions
#'undelete-frame--save-deleted-frame)
(setq undelete-frame--deleted-frames nil)))