import { op } from "https://deno.land/x/ddc_vim@v4.3.1/deps.ts";
const { modeline } = op;
If 'modeline' is on 'modelines' gives the number of lines that is
checked for set commands. If 'modeline' is off or 'modelines' is zero
no lines are checked. See modeline.
(Vim default: on (off for root), Vi default: off)