tr                648 lib/lua/lstrlib.c   int  tr = lua_type(L, 3);
tr                654 lib/lua/lstrlib.c   luaL_argcheck(L, tr == LUA_TNUMBER || tr == LUA_TSTRING ||
tr                655 lib/lua/lstrlib.c                    tr == LUA_TFUNCTION || tr == LUA_TTABLE, 3,