public/javascript/libs/select2.js
function (selected) {
            var val = this.getVal(),
                data,
                index;

            selected = selected.closest(".select2-search-choice");

            if (selected.length === 0) {
                throw "Invalid argument: " + selected + ". Must be .select2-search-choice";
            }

            data = selected.data("select2-data");

            if (!data) {
                // prevent a race condition when the 'x' is clicked really fast repeatedly the event can be queued
                // and invoked on an element already removed
                return;
            }

            index = indexOf(this.id(data), val);

            if (index >= 0) {
                val.splice(index, 1);
                this.setVal(val);
                if (this.select) this.postprocessResults();
            }
            selected.remove();

            this.opts.element.trigger({ type: "removed", val: this.id(data), choice: data });
            this.triggerChange({ removed: data });
        }
function (selected) {
            var val = this.getVal(),
                data,
                index;

            selected = selected.closest(".select2-search-choice");

            if (selected.length === 0) {
                throw "Invalid argument: " + selected + ". Must be .select2-search-choice";
            }

            data = selected.data("select2-data");

            if (!data) {
                // prevent a race condition when the 'x' is clicked really fast repeatedly the event can be queued
                // and invoked on an element already removed
                return;
            }

            index = indexOf(this.id(data), val);

            if (index >= 0) {
                val.splice(index, 1);
                this.setVal(val);
                if (this.select) this.postprocessResults();
            }
            selected.remove();

            this.opts.element.trigger({ type: "removed", val: this.id(data), choice: data });
            this.triggerChange({ removed: data });
        }
multi