optionsOverride

pub fn optionsOverride(self: *const Borders, opts: Options) Borders {
        return .{
            .external = self.external,
            .internal = self.internal,
            .num_cols = self.num_cols,
            .num_rows = self.num_rows,
            .cell_opts = self.cell_opts,
            .opts = self.opts.override(opts),
        };
    }