lisp/gnus/mm-decode.el (mm-save-part): Handle invalid read-file-name results

diff --git a/lisp/gnus/ChangeLog b/lisp/gnus/ChangeLog
index 745e0ede5a8dccc2f9be73bbf4223562c9363fd2..f224752a33471a5a284a551102238d09d4d4d7ea 100644 (file)
--- a/lisp/gnus/ChangeLog
+++ b/lisp/gnus/ChangeLog
@@ -1,3 +1,7 @@
+2013-01-30  Christopher Schmidt  <christopher@ch.ristopher.com>
+
+       * mm-decode.el (mm-save-part): Handle invalid read-file-name results.
+
 2013-01-21  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 
        * gnus-sum.el (gnus-summary-read-group-1): Protect against not being

diff --git a/lisp/gnus/mm-decode.el b/lisp/gnus/mm-decode.el
index b5e4d3e38e8d09fb10d37b79debe2a719dcda2fd..812ee7396dda454b9eaa6412567712c36f1c32e5 100644 (file)
--- a/lisp/gnus/mm-decode.el
+++ b/lisp/gnus/mm-decode.el
@@ -1298,14 +1298,26 @@ PROMPT overrides the default one used to ask user for a file name."
     (when filename
       (setq filename (gnus-map-function mm-file-name-rewrite-functions
                                        (file-name-nondirectory filename))))
-    (setq file
-          (read-file-name
-          (or prompt
-              (format "Save MIME part to (default %s): "
-                      (or filename "")))
-          (or mm-default-directory default-directory)
-          (expand-file-name (or filename "")
-                            (or mm-default-directory default-directory))))
+    (while
+       (progn
+         (setq file
+               (read-file-name
+                (or prompt
+                    (format "Save MIME part to (default %s): "
+                            (or filename "")))
+                (or mm-default-directory default-directory)
+                (expand-file-name (or filename "")
+                                  (or mm-default-directory default-directory))))
+         (cond ((or (not file) (equal file ""))
+                (message "Please enter a file name")
+                t)
+               ((and (file-directory-p file)
+                     (not filename))
+                (message "Please enter a non-directory file name")
+                t)
+               (t nil)))
+      (sit-for 2)
+      (discard-input))
     (if (file-directory-p file)
        (setq file (expand-file-name filename file))
       (setq file (expand-file-name