import { op } from "https://deno.land/x/ddc_vim@v3.9.0/deps.ts";
const { cscoperelative } = op;
In the absence of a prefix (-P) for cscope. setting this option enables
to use the basename of cscope.out path as the prefix.
See cscoperelative.
NOTE: This option is reset when 'compatible' is set.
(default off)
not available when compiled without the +cscope feature