From 25ef19c5f4c2955cf053379889ac584225146dc8 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Thu, 10 Aug 1995 20:31:27 +0000
Subject: [PATCH] Fix defvar equivalent expression.

---
 lispref/variables.texi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lispref/variables.texi b/lispref/variables.texi
index dbc922a8bd8..c3bd61541d8 100644
--- a/lispref/variables.texi
+++ b/lispref/variables.texi
@@ -484,7 +484,8 @@ Here is an equivalent expression for the @code{defvar} special form:
 (progn
   (if (not (boundp '@var{symbol}))
       (setq @var{symbol} @var{value}))
-  (put '@var{symbol} 'variable-documentation '@var{doc-string})
+  (if '@var{doc-string}
+    (put '@var{symbol} 'variable-documentation '@var{doc-string}))
   '@var{symbol})
 @end group
 @end example
-- 
2.39.2