(mouse-yank-secondary): Better error message if no secondary selection.

diff --git a/lisp/mouse.el b/lisp/mouse.el
index 5577b94d01a775370f5d82778fad7ce60551ea0b..ef46723b54dd0accbecba65ba8b5ad37054250a1 100644 (file)
--- a/lisp/mouse.el
+++ b/lisp/mouse.el
@@ -1631,7 +1631,10 @@ regardless of where you click."
   ;; Give temporary modes such as isearch a chance to turn off.
   (run-hooks 'mouse-leave-buffer-hook)
   (or mouse-yank-at-point (mouse-set-point click))
-  (insert (x-get-selection 'SECONDARY)))
+  (let ((secondary (x-get-selection 'SECONDARY)))
+    (if secondary
+        (insert (x-get-selection 'SECONDARY))
+      (error "No secondary selection"))))
 
 (defun mouse-kill-secondary ()
   "Kill the text in the secondary selection.