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master 4e64d02: Define keymap-name-history

From: Lars Ingebrigtsen
Subject: master 4e64d02: Define keymap-name-history
Date: Tue, 19 Jan 2021 01:09:30 -0500 (EST)

branch: master
commit 4e64d023563988a570b6c2ac60d48af7f2d64a68
Author: James N. V. Cash <james.nvc@gmail.com>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    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 d559221..7be2826 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)

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