new_localvar
new_localvar(ls, varname);
new_localvar(ls, indexname);
new_localvar(ls, str_checkname(ls));
new_localvar(ls, str_checkname(ls)); /* new local variable */
new_localvar(ls, str_checkname(ls));
new_localvar(ls, luaX_newstring(ls, name, sz));
new_localvar(ls, str_checkname(ls));