X-Git-Url: https://git.notmuchmail.org/git?a=blobdiff_plain;f=emacs%2Fnotmuch.el;h=f6bf9c84d6a9cc4c86c647237d668e5a60784daf;hb=c2d8236b56e713ae2e7053c9ea3cc13f7d1283c4;hp=8aa01049e9be7ddd312f02e756850a9f29ab1aa0;hpb=ec020894331b0ef9b594cdc47f4b79abeda4f9cd;p=notmuch

diff --git a/emacs/notmuch.el b/emacs/notmuch.el
index 8aa01049..f6bf9c84 100644
--- a/emacs/notmuch.el
+++ b/emacs/notmuch.el
@@ -428,14 +428,16 @@ matched and unmatched messages in the current thread."
   "Return the stable query for the current region.
 
 If ONLY-MATCHED is non-nil, include only matched messages.  If it
-is nil, include both matched and unmatched messages."
+is nil, include both matched and unmatched messages. If there are
+no messages in the region then return nil."
   (let ((query-list nil) (all (not only-matched)))
     (dolist (queries (notmuch-search-properties-in-region :query beg end))
       (when (first queries)
 	(push (first queries) query-list))
       (when (and all (second queries))
 	(push (second queries) query-list)))
-    (concat "(" (mapconcat 'identity query-list ") or (") ")")))
+    (when query-list
+      (concat "(" (mapconcat 'identity query-list ") or (") ")"))))
 
 (defun notmuch-search-find-authors ()
   "Return the authors for the current thread"