* dired-x.el (dired-do-run-mail): Prompt for confirmation.

Fixes: debbugs:13561

lisp/ChangeLog

+2013-02-09  Chong Yidong  <cyd@gnu.org>
+
+	* dired-x.el (dired-do-run-mail): Prompt for confirmation
+	(Bug#13561).
+
 2013-02-08  Stefan Monnier  <monnier@iro.umontreal.ca>
 	* emacs-lisp/byte-run.el (eval-when-compile, eval-and-compile):

lisp/dired-x.el

@@ -1344,13 +1344,20 @@ Otherwise obeys the value of `dired-vm-read-only-folders'."
   (rmail (dired-get-filename)))
 
 (defun dired-do-run-mail ()
-  "If `dired-bind-vm' is non-nil, call `dired-vm', else call `dired-rmail'."
+  "Visit the current file as a mailbox, using VM or RMAIL.
+Prompt for confirmation first; if the user says yes, call
+`dired-vm' if `dired-bind-vm' is non-nil, `dired-rmail'
+otherwise."
   (interactive)
-  (if dired-bind-vm
-      ;; Read mail folder using vm.
-      (dired-vm)
-    ;; Read mail folder using rmail.
-    (dired-rmail)))
+  (let ((file (dired-get-filename t)))
+    (if dired-bind-vm
+	(if (y-or-n-p (concat "Visit `" file
+			      "' as a mail folder with VM?"))
+	    (dired-vm))
+      ;; Read mail folder using rmail.
+      (if (y-or-n-p (concat "Visit `" file
+			    "' as a mailbox with RMAIL?"))
+	  (dired-rmail)))))
 
 
 ;;; MISCELLANEOUS INTERNAL FUNCTIONS.

lisp/dired.el

@@ -4297,7 +4297,7 @@ instead.
 ;;;***
 
 ;;;### (autoloads (dired-do-relsymlink dired-jump-other-window dired-jump)
-;;;;;;  "dired-x" "dired-x.el" "cdaacce7c861256289ba48493dd6d0ec")
+;;;;;;  "dired-x" "dired-x.el" "90ba5245f6f5df3bdbda6303c725ef45")
 ;;; Generated autoloads from dired-x.el
 
 (autoload 'dired-jump "dired-x" "\