bug#27203: 25.2; rmail doesn't handle mime if rmail-mime-attachment-dirs-alist gives no valid destination

[Glenn Morris]

Version: 26.1

Thanks, I applied the following:

commit 73635ed
Date:   Fri Jun 2 20:42:01 2017 -0400

    Small rmailmm fix (bug#27203)
    
    * lisp/mail/rmailmm.el (rmail-mime-insert-bulk):
    Fall back to HOME if no match in rmail-mime-attachment-dirs-alist.

diff --git a/lisp/mail/rmailmm.el b/lisp/mail/rmailmm.el
index c6b9cfd..1ffd466 100644
--- a/lisp/mail/rmailmm.el
+++ b/lisp/mail/rmailmm.el
@@ -817,12 +817,13 @@ directly."
         (bulk-data (aref tagline 1))
         (body (rmail-mime-entity-body entity))
         ;; Find the default directory for this media type.
-        (directory (catch 'directory
-                     (dolist (entry rmail-mime-attachment-dirs-alist)
-                       (when (string-match (car entry) (car content-type))
-                         (dolist (dir (cdr entry))
-                           (when (file-directory-p dir)
-                             (throw 'directory dir)))))))
+        (directory (or (catch 'directory
+                         (dolist (entry rmail-mime-attachment-dirs-alist)
+                           (when (string-match (car entry) (car content-type))
+                             (dolist (dir (cdr entry))
+                               (when (file-directory-p dir)
+                                 (throw 'directory dir))))))
+                       "~"))
         (filename (or (cdr (assq 'name (cdr content-type)))
                       (cdr (assq 'filename (cdr content-disposition)))
                       "noname"))