diff --git a/lauxlib.h b/lauxlib.h
index 2ec7e50c..5f6de7c7 100644
--- a/lauxlib.h
+++ b/lauxlib.h
@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.h,v 1.116 2011/04/08 19:17:36 roberto Exp roberto $
+** $Id: lauxlib.h,v 1.117 2011/06/16 14:10:12 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -163,6 +163,31 @@ LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz);
 /* }====================================================== */
 
 
+
+/*
+** {======================================================
+** File handles for IO library
+** =======================================================
+*/
+
+/*
+** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and
+** initial structure 'luaIO_Stream' (it may contain other fields
+** after that initial structure).
+*/
+
+#define LUA_FILEHANDLE          "FILE*"
+
+
+typedef struct luaIO_Stream {
+  FILE *f;  /* stream (NULL for incompletely created streams) */
+  lua_CFunction closef;  /* to close stream (NULL for closed streams) */
+} luaIO_Stream;
+
+/* }====================================================== */
+
+
+
 /* compatibility with old module system */
 #if defined(LUA_COMPAT_MODULE)
 
diff --git a/liolib.c b/liolib.c
index f40094f4..b5b90309 100644
--- a/liolib.c
+++ b/liolib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: liolib.c,v 2.104 2011/09/13 21:09:04 roberto Exp roberto $
+** $Id: liolib.c,v 2.105 2011/11/09 14:10:43 roberto Exp roberto $
 ** Standard I/O (and system) library
 ** See Copyright Notice in lua.h
 */
@@ -102,11 +102,7 @@
 #define IO_OUTPUT	(IO_PREFIX "output")
 
 
-typedef struct LStream {
-  FILE *f;  /* stream */
-  lua_CFunction closef;  /* to close stream (NULL for closed streams) */
-} LStream;
-
+typedef luaIO_Stream LStream;
 
 
 #define tolstream(L)	((LStream *)luaL_checkudata(L, 1, LUA_FILEHANDLE))