Function compareCollapsedMarkers

external/.scrollLibs.js:1409–1425

(a, b)

  // spans is larger (and thus includes the other). Falls back to
  // comparing ids when the spans cover exactly the same range.
  function compareCollapsedMarkers(a, b) {
    var lenDiff = a.lines.length - b.lines.length
    if (lenDiff != 0) {
      return lenDiff
    }
    var aPos = a.find(),
      bPos = b.find()
    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b)
    if (fromCmp) {
      return -fromCmp
    }
    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b)
    if (toCmp) {
      return toCmp
    }
    return b.id - a.id
  }

  // Find out whether a line ends or starts in a collapsed span. If
  // so, return the marker for that span.