https://www.bistum-dresden-meissen.de/components/com_flexicontent/librairies/select2/select2.sortable.js?3.5.4

1(function($){
2	$.fn.extend({
3		select2_sortable: function(options)
4		{
5			var select = $(this);
6
7			options = typeof options !== 'undefined' ? options : {};
8			options.items     = typeof options.items !== 'undefined' ? options.items : 'li:not(.select2-search-field)';
9			options.tolerance = typeof options.tolerance !== 'undefined' ? options.tolerance : 'pointer';
10
11			options.stop = typeof options.stop !== 'undefined' ? options.stop : function(event, ui)
12			{
13				$($(ul).find('.select2-search-choice').get().reverse()).each(function() {
14					var id = $(this).data('select2Data').id;
15					var option = select.find('option[value="' + id + '"]')[0];
16					select.prepend(option);
17				});
18			}
19
20			var ul = select.prev('.select2-container').first('ul');
21			ul.sortable(options);
22		}
23	});
24}(jQuery));