From 7e05cdaf48ed8eccf1bb5162c7eaf0fcbdb59bfb Mon Sep 17 00:00:00 2001
From: Stefan Monnier <monnier@iro.umontreal.ca>
Date: Mon, 16 Oct 2000 21:57:56 +0000
Subject: [PATCH] (keymap_memberp): Ensure that nil is not a member.

---
 src/ChangeLog | 4 ++++
 src/keymap.c  | 1 +
 2 files changed, 5 insertions(+)

diff --git a/src/ChangeLog b/src/ChangeLog
index a12519a96c0..09b6d5b10f8 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2000-10-16  Stefan Monnier  <monnier@cs.yale.edu>
+
+	* keymap.c (keymap_memberp): Ensure that nil is not a member.
+
 2000-10-16  Gerd Moellmann  <gerd@gnu.org>
 
 	* xdisp.c (set_iterator_to_next): Reset box start and end flags of
diff --git a/src/keymap.c b/src/keymap.c
index 7fe8718aa09..fbbbcae3998 100644
--- a/src/keymap.c
+++ b/src/keymap.c
@@ -311,6 +311,7 @@ int
 keymap_memberp (map, maps)
      Lisp_Object map, maps;
 {
+  if (NILP (map)) return 0;
   while (KEYMAPP (maps) && !EQ (map, maps))
     maps = Fkeymap_parent (maps);
   return (EQ (map, maps));
-- 
2.39.2