diff -rdu lua-5.1.3.orig/src/luaconf.h lua-5.1.3/src/luaconf.h
--- lua-5.1.3.orig/src/luaconf.h	2008-02-12 17:00:03.000000000 +0000
+++ lua-5.1.3/src/luaconf.h	2008-02-12 17:07:55.000000000 +0000
@@ -340,14 +340,14 @@
 ** CHANGE it to undefined as soon as your programs use only '...' to
 ** access vararg parameters (instead of the old 'arg' table).
 */
-#define LUA_COMPAT_VARARG
+#undef LUA_COMPAT_VARARG
 
 /*
 @@ LUA_COMPAT_MOD controls compatibility with old math.mod function.
 ** CHANGE it to undefined as soon as your programs use 'math.fmod' or
 ** the new '%' operator instead of 'math.mod'.
 */
-#define LUA_COMPAT_MOD
+#undef LUA_COMPAT_MOD
 
 /*
 @@ LUA_COMPAT_LSTR controls compatibility with old long string nesting
@@ -355,14 +355,14 @@
 ** CHANGE it to 2 if you want the old behaviour, or undefine it to turn
 ** off the advisory error when nesting [[...]].
 */
-#define LUA_COMPAT_LSTR		1
+#undef LUA_COMPAT_LSTR
 
 /*
 @@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name.
 ** CHANGE it to undefined as soon as you rename 'string.gfind' to
 ** 'string.gmatch'.
 */
-#define LUA_COMPAT_GFIND
+#undef LUA_COMPAT_GFIND
 
 /*
 @@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib'
@@ -370,7 +370,7 @@
 ** CHANGE it to undefined as soon as you replace to 'luaL_register'
 ** your uses of 'luaL_openlib'
 */
-#define LUA_COMPAT_OPENLIB
+#undef LUA_COMPAT_OPENLIB