Terrible workaround for weird select2 bug

autocomplete.directive.js

  // For some reason select2 interferes with the space key for multiple
  // selects. It doesn't in its own examples, but it does here. This is a
  // workaround to manually add a space to the input. It uses JQuery event
  // delegation because the actual element that the event is triggered on
  // doesn't exist at the time this gets set up.
  element.parent().on('keypress', '.select2-selection', awfulSpaceHack);
  element.on('$destroy', function () {
    element.parent().off('keypress', '.select2-selection', awfulSpaceHack);
  });
  function awfulSpaceHack(evt) {
    if (evt.which === 32) { // 32 is the space character
      var val = $(evt.target).val();
      $(evt.target).val(val + ' '); // gr8 style
    }
  }