Function typerror

libaegisub/lua/utils.cpp:206–210

}

[[noreturn]] int typerror(lua_State *L, int narg, const char *tname) {
	const char *msg = lua_pushfstring(L, "%s expected, got %s",
		tname, luaL_typename(L, narg));
	argerror(L, narg, msg);
}

void argcheck(lua_State *L, bool cond, int narg, const char *msg) {
	if (!cond) argerror(L, narg, msg);