Variable: jit-lock-debug-mode-hook

jit-lock-debug-mode-hook is a customizable variable defined in jit-lock.el.gz.

Value

nil

Documentation

Hook run after entering or leaving jit-lock-debug-mode(var)/jit-lock-debug-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/jit-lock.el.gz
(define-minor-mode jit-lock-debug-mode
  "Minor mode to help debug code run from jit-lock.

When this minor mode is enabled, jit-lock runs as little code as possible
during redisplay and moves the rest to a timer, where things
like `debug-on-error' and Edebug can be used."
  :global t
  (when jit-lock-defer-timer
    (cancel-timer jit-lock-defer-timer)
    (setq jit-lock-defer-timer nil))
  (when jit-lock-debug-mode
    (setq jit-lock-defer-timer
          (run-with-idle-timer 0 t #'jit-lock--debug-fontify))))