master 82fa112e8a: Give better error message in dired-toggle-read-only on nonexisting dirs

[Lars Ingebrigtsen]

branch: master
commit 82fa112e8a6ca5a6b6d160e25134c6c4ab9a0bd7
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    Give better error message in dired-toggle-read-only on nonexisting dirs
    
    * lisp/dired.el (dired-toggle-read-only): Refuse to edit
    non-existent directories (bug#23276).
---
 lisp/dired.el | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lisp/dired.el b/lisp/dired.el
index 2856c5d243..89fbd52aa6 100644
--- a/lisp/dired.el
+++ b/lisp/dired.el
@@ -2533,6 +2533,8 @@ If the current buffer can be edited with Wdired, (i.e. 
the major
 mode is `dired-mode'), call `wdired-change-to-wdired-mode'.
 Otherwise, toggle `read-only-mode'."
   (interactive)
+  (unless (file-exists-p default-directory)
+    (user-error "The current directory no longer exists"))
   (when (and (not (file-writable-p default-directory))
              (not (y-or-n-p
                    "Directory isn't writable; edit anyway? ")))