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-rw-r--r--lisp/wdired.el4
1 files changed, 4 insertions, 0 deletions
diff --git a/lisp/wdired.el b/lisp/wdired.el
index 1363181524..bc70e0ddcf 100644
--- a/lisp/wdired.el
+++ b/lisp/wdired.el
@@ -238,6 +238,8 @@ in disk.
See `wdired-mode'."
(interactive)
+ (or (eq major-mode 'dired-mode)
+ (error "Not a Dired buffer"))
(set (make-local-variable 'wdired-old-content)
(buffer-substring (point-min) (point-max)))
(set (make-local-variable 'wdired-old-point) (point))
@@ -328,6 +330,8 @@ non-nil means return old filename."
(defun wdired-change-to-dired-mode ()
"Change the mode back to dired."
+ (or (eq major-mode 'wdired-mode)
+ (error "Not a Wdired buffer"))
(let ((inhibit-read-only t))
(remove-text-properties (point-min) (point-max)
'(read-only nil local-map nil)))