Variable: org-num-mode-hook
org-num-mode-hook is a customizable variable defined in org-num.el.gz.
Value
nil
Documentation
Hook run after entering or leaving org-num-mode(var)/org-num-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/org/org-num.el.gz
;;;###autoload
(define-minor-mode org-num-mode
"Dynamic numbering of headlines in an Org buffer."
:lighter " o#"
(cond
(org-num-mode
(unless (derived-mode-p 'org-mode)
(user-error "Cannot activate headline numbering outside Org mode"))
(org-num--clear)
(setq org-num--numbering nil)
(setq org-num--overlays (nreverse (org-num--number-region nil nil)))
(add-hook 'after-change-functions #'org-num--verify nil t)
(add-hook 'change-major-mode-hook #'org-num--clear nil t))
(t
(org-num--clear)
(remove-hook 'after-change-functions #'org-num--verify t)
(remove-hook 'change-major-mode-hook #'org-num--clear t))))