add new metatable syntax for issue #41, fix reusing local variable issue, update built-in Lua.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/lua/lauxlib.h b/src/lua/lauxlib.h
index 6571491..9058e26 100644
--- a/src/lua/lauxlib.h
+++ b/src/lua/lauxlib.h
@@ -122,6 +122,10 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
 ** ===============================================================
 */
 
+#if !defined(l_likely)
+#define l_likely(x)     x
+#endif
+
 
 #define luaL_newlibtable(L,l)   \
   lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1)
@@ -130,10 +134,10 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
   (luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
 
 #define luaL_argcheck(L, cond,arg,extramsg)     \
-                ((void)((cond) || luaL_argerror(L, (arg), (extramsg))))
+        ((void)(l_likely(cond) || luaL_argerror(L, (arg), (extramsg))))
 
 #define luaL_argexpected(L,cond,arg,tname)      \
-                ((void)((cond) || luaL_typeerror(L, (arg), (tname))))
+        ((void)(l_likely(cond) || luaL_typeerror(L, (arg), (tname))))
 
 #define luaL_checkstring(L,n)   (luaL_checklstring(L, (n), NULL))
 #define luaL_optstring(L,n,d)   (luaL_optlstring(L, (n), (d), NULL))