helpful

commit 3e2f35d807a876a88ed1f43267ad1736c2c41fcc
parent 7319a7a638fc2f8bcea5d1ffecab13a4c18818cf
Author: Narendra Joshi <narendraj9@gmail.com>
Date:   Fri, 29 Sep 2017 22:44:15 +0530

Guard helpful-update against keys bound to undefined commands

Diffstat:
M
helpful.el
 | 
3
+++

1 file changed, 3 insertions(+), 0 deletions(-)
diff --git a/helpful.el b/helpful.el
@@ -747,6 +747,9 @@ For example, \"(some-func FOO &optional BAR)\"."
     (unless sym
       (user-error "No command is bound to %s"
                   (key-description key-sequence)))
+    (unless (commandp sym)
+      (user-error "%s is bound to symbol that is not a command"
+                  (key-description key-sequence)))
     (pop-to-buffer (helpful--buffer sym t))
     (helpful-update)))