Variable: widget-field-use-before-change

widget-field-use-before-change is a variable defined in wid-edit.el.gz.

Value

t

Documentation

Non-nil means use before-change-functions to track editable fields.

This enables the use of undo. Using before hooks also means that the :notify function can't know the new value.

Source Code

;; Defined in /usr/src/emacs/lisp/wid-edit.el.gz
(defvar widget-field-use-before-change t
  "Non-nil means use `before-change-functions' to track editable fields.
This enables the use of undo.  Using before hooks also means that
the :notify function can't know the new value.")