From 29f23222c25dda701508904d2ab18c5191aa23bc Mon Sep 17 00:00:00 2001
From: James Roseborough <james.roseborough@luaj.org>
Date: Tue, 20 Apr 2010 14:35:14 +0000
Subject: [PATCH] Improve compatibility with luaj 1.0

---
 src/core/org/luaj/vm2/lib/IoLib.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/org/luaj/vm2/lib/IoLib.java b/src/core/org/luaj/vm2/lib/IoLib.java
index b91ef5bf..01615fcb 100644
--- a/src/core/org/luaj/vm2/lib/IoLib.java
+++ b/src/core/org/luaj/vm2/lib/IoLib.java
@@ -353,7 +353,7 @@ public class IoLib extends OneArgFunction {
 					typerror( i+1, "(invalid format)" );
 			}
 			if ( v[i].isnil() )
-				return varargsOf(v,0,i);
+				return i==0? NIL: varargsOf(v,0,i);
 		}
 		return varargsOf(v);
 	}