Function optionsselector

explainshell/web/static/js/es.js:314–330

(pres, spans)

// return the <span>'s in #command that are linked to each <pre> in pres
function optionsselector(pres, spans) {
    const ids = pres.map(function () {
        return this.id;
    });

    const s = $('#command span.unknown');
    const r = Array.from(ids).reduce(
        (s, id) => s.add(`#command span[helpref^=${id}]`),
        s,
    );

    if (typeof spans === 'object') {
        return r.filter(spans);
    } else {
        return r;
    }
}

// initialize the lines logic, deciding which group of elements should be displayed
//