Variable: ff-pre-find-hook
ff-pre-find-hook is a customizable and buffer-local variable defined
in find-file.el.gz.
Documentation
List of functions to be called before the search for the file starts.
Source Code
;; Defined in /usr/src/emacs/lisp/find-file.el.gz
(defcustom ff-pre-find-hook nil
"List of functions to be called before the search for the file starts."
:type 'hook)