Define keymap-name-history

* lisp/help-fns.el (keymap-name-history): Define the history
variable (bug#45879).  This avoids problems in other completing
systems like Helm.

Copyright-paperwork-exempt: yes

diff --git a/lisp/help-fns.el b/lisp/help-fns.el
index d559221a8271267700b1cd230ff615aa0ab8c943..7be2826361c68be984cd1882eae0c37a179a6c2f 100644 (file)
--- a/lisp/help-fns.el
+++ b/lisp/help-fns.el
@@ -76,6 +76,9 @@ frame.")
   ;; costly, really).
   "Radix-tree representation replacing `definition-prefixes'.")
 
+(defvar keymap-name-history nil
+  "History for input to `describe-keymap'.")
+
 (defun help-definition-prefixes ()
   "Return the up-to-date radix-tree form of `definition-prefixes'."
   (when (> (hash-table-count definition-prefixes) 0)