@function hu-remove-list-duplicates($list, $recursive: false) {
  $result: ();

  @each $item in $list {
    @if (not index($result, $item)) {
      @if (length($item) > 1 and $recursive) {
        $result: append($result, hu-remove-list-duplicates($item, $recursive));
      }
      @else {
        $result: append($result, $item);
      }
    }
  }

  @return $result;
}