emacs: Don't prompt the user to choose from zero matching addresses.

If the address matching function generates no matches, don't prompt
the user to choose between them (!). Instead, generate a message to
report that there were no matches.

diff --git a/emacs/notmuch-address.el b/emacs/notmuch-address.el
index 1a7c5771ad9931650bdeed2a9fdab8ed51d81260..8eba7a0b77681f1f03c597840ef2276eda554adc 100644 (file)
--- a/emacs/notmuch-address.el
+++ b/emacs/notmuch-address.el
@@ -54,15 +54,22 @@ line."
         (completion-ignore-case t)
         (options (notmuch-address-options orig))
         (num-options (length options))
-        (chosen (if (eq num-options 1)
-                    (car options)
+        (chosen (cond
+                 ((eq num-options 0)
+                  nil)
+                 ((eq num-options 1)
+                  (car options))
+                 (t
                   (completing-read (format "Address (%s matches): " num-options)
                                    (cdr options) nil nil (car options)
-                                   'notmuch-address-history))))
-    (when chosen
-      (push chosen notmuch-address-history)
-      (delete-region beg end)
-      (insert chosen))))
+                                   'notmuch-address-history)))))
+    (if chosen
+       (progn
+         (push chosen notmuch-address-history)
+         (delete-region beg end)
+         (insert chosen))
+      (message "No matches.")
+      (ding))))
 
 ;; Copied from `w3m-which-command'.
 (defun notmuch-address-locate-command (command)