From e334942e573ea8a4416eca0afafcaf45c3bba06f Mon Sep 17 00:00:00 2001
From: Paul Smith <psmith@gnu.org>
Date: Mon, 22 Mar 2004 15:11:48 +0000
Subject: Numerous updates and bug fixes. A number of W32 cleanups from
 J.Grant. A number of OS/2 cleanups from Andreas Buening. Various random bug
 fixes.

---
 expand.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'expand.c')

diff --git a/expand.c b/expand.c
index 8f9f4b1..2c8b4b6 100644
--- a/expand.c
+++ b/expand.c
@@ -153,7 +153,8 @@ reference_variable (char *o, char *name, unsigned int length)
   if (v == 0)
     warn_undefined (name, length);
 
-  if (v == 0 || *v->value == '\0')
+  /* If there's no variable by that name or it has no value, stop now.  */
+  if (v == 0 || (*v->value == '\0' && !v->append))
     return o;
 
   value = (v->recursive ? recursively_expand (v) : v->value);
-- 
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