From 4e64d023563988a570b6c2ac60d48af7f2d64a68 Mon Sep 17 00:00:00 2001
From: "James N. V. Cash" <james.nvc@gmail.com>
Date: Tue, 19 Jan 2021 07:07:37 +0100
Subject: [PATCH] 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
---
 lisp/help-fns.el | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lisp/help-fns.el b/lisp/help-fns.el
index d559221a827..7be2826361c 100644
--- 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)
-- 
2.39.5