Variable: undo-in-progress

undo-in-progress is a variable defined in simple.el.gz.

Value

nil

Documentation

Non-nil while performing an undo.

Some change-hooks test this variable to do something different.

Source Code

;; Defined in /usr/src/emacs/lisp/simple.el.gz
(defvar undo-in-progress nil
  "Non-nil while performing an undo.
Some change-hooks test this variable to do something different.")