Variable: button-mode-hook
button-mode-hook is a customizable variable defined in button.el.gz.
Value
nil
Documentation
Hook run after entering or leaving button-mode(var)/button-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/button.el.gz
(define-minor-mode button-mode
"A minor mode for navigating to buttons with the TAB key."
:keymap button-buffer-map)