Function spansFor

static/js/codemirror/codemirror.js:4127–4127

(n)

  function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) {
    function spansFor(n) {return markedSpans ? markedSpans[n] : null;}

    var from = change.from, to = change.to, text = change.text;
    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);