LUA_TNIL
case LUA_TNIL:
luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
case LUA_TNIL:
#define NILCONSTANT {NULL}, LUA_TNIL
#define ttisnil(o) checktag((o), LUA_TNIL)
#define setnilvalue(obj) settt_(obj, LUA_TNIL)
#define NILCONSTANT {{{NULL}, tag2tt(LUA_TNIL)}}
#define NILCONSTANT {{tag2tt(LUA_TNIL), {NULL}}}
case LUA_TNIL: return luaO_nilobject;
#define lua_isnil(L,n) (lua_type(L, (n)) == LUA_TNIL)
case LUA_TNIL:
case LUA_TNIL: return 1;
if (type == LUA_TNIL) {
if (type != LUA_TNIL && type != kwargs[i].za_lua_type) {
case LUA_TNIL: