Variable: command-history-hook
command-history-hook is a customizable variable defined in
chistory.el.gz.
Value
nil
Documentation
If non-nil, its value is called on entry to command-history-mode.
Source Code
;; Defined in /usr/src/emacs/lisp/chistory.el.gz
(defcustom command-history-hook nil
"If non-nil, its value is called on entry to `command-history-mode'."
:type 'hook)