<div></div>
<string-split self="abc">
<var-set name="lastIndex" type="number">
<number-new value="-1">
</var-set>
<array-loop>
<var-update name="lastIndex">
<loop-get-index>
</var-update>
</array-loop>
<var-get name="lastIndex">
<assert-equal value="2" type="number">