Function expand

mini-code-edit/cm/lib/util/foldcode.js:164–168

(cm, region)

  }

  function expand(cm, region) {
    cm.clearMarker(region.start);
    for (var i = 0; i < region.hidden.length; ++i)
      cm.showLine(region.hidden[i]);
  }

  return function(cm, line) {
    cm.operation(function() {