From 5bd9827af1e929a208a1f162caf2d9304cc5a65a Mon Sep 17 00:00:00 2001
From: Enyby <Enyby@users.noreply.github.com>
Date: Sun, 16 Sep 2018 15:09:36 +0300
Subject: [PATCH] Improve error message for string.char.

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

diff --git a/src/core/org/luaj/vm2/lib/StringLib.java b/src/core/org/luaj/vm2/lib/StringLib.java
index 3910f13c..542afe8c 100644
--- a/src/core/org/luaj/vm2/lib/StringLib.java
+++ b/src/core/org/luaj/vm2/lib/StringLib.java
@@ -154,7 +154,7 @@ public class StringLib extends TwoArgFunction {
 			byte[] bytes = new byte[n];
 			for ( int i=0, a=1; i<n; i++, a++ ) {
 				int c = args.checkint(a);
-				if (c<0 || c>=256) argerror(a, "invalid value");
+				if (c<0 || c>=256) argerror(a, "invalid value for string.char [0; 255]: " + c);
 				bytes[i] = (byte) c;
 			}
 			return LuaString.valueUsing( bytes );