1 files changed, 4 insertions, 1 deletions
diff --git a/src/lzio.h b/src/lzio.h
index 51d695d8..53eb91ef 100644
--- a/src/lzio.h
+++ b/src/lzio.h
@@ -1,5 +1,5 @@
 /*
-** $Id: lzio.h,v 1.21.1.1 2007/12/27 13:02:25 roberto Exp $
+** $Id: lzio.h,v 1.22 2009/05/18 17:26:25 roberto Exp $
 ** Buffered streams
 ** See Copyright Notice in lua.h
 */
@@ -21,6 +21,9 @@ typedef struct Zio ZIO;
 
 #define zgetc(z)  (((z)->n--)>0 ?  char2int(*(z)->p++) : luaZ_fill(z))
 
+#define zungetc(z)	((z)->n++, (z)->p--)
+
+
 typedef struct Mbuffer {
   char *buffer;
   size_t n;