Overleaf/services/web/frontend/js/vendor/libs/angular-autocomplete/ac_template.html

<div class="autocomplete {{ attrs.class }}" id="{{ attrs.id }}">
  <input
    type="text"
    ng-model="searchParam"
    placeholder="{{ attrs.placeholder }}"
    class="{{ attrs.inputclass }}"
    id="{{ attrs.inputid }}"/>
  <ul ng-show="completing">
    <li
      suggestion
      ng-repeat="suggestion in suggestions | filter:searchFilter | orderBy:'toString()' track by $index"
      index="{{ $index }}"
      val="{{ suggestion }}"
      ng-class="{ active: ($index === selectedIndex) }"
      ng-click="select(suggestion)"
      ng-bind-html="suggestion | highlight:searchParam"></li>
  </ul>
</div>