Variable: read-extended-command-mode-hook
read-extended-command-mode-hook is a customizable variable defined in
simple.el.gz.
Value
nil
Documentation
Hook run after entering or leaving read-extended-command-mode(var)/read-extended-command-mode(fun).
No problems result if this variable is not bound.
add-hook automatically binds it. (This is true for all hook variables.)
Source Code
;; Defined in /usr/src/emacs/lisp/simple.el.gz
(define-minor-mode read-extended-command-mode
"Minor mode used for completion in `read-extended-command'.")