Variable: before-revert-hook
before-revert-hook is a variable defined in files.el.gz.
Value
(preview-kill-buffer-cleanup
tramp-flush-file-function)
Documentation
Normal hook for revert-buffer to run before reverting.
The function revert-buffer--default runs this.
A customized revert-buffer-function need not run this hook.
Probably introduced at or before Emacs version 19.23.
Source Code
;; Defined in /usr/src/emacs/lisp/files.el.gz
(defvar before-revert-hook nil
"Normal hook for `revert-buffer' to run before reverting.
The function `revert-buffer--default' runs this.
A customized `revert-buffer-function' need not run this hook.")