<!DOCTYPE html>
<style>
    span { display:inline-block; width:1em; }
</style>
<p>Test insertion of a spanner in the middle of column content, so that we need to split a column row in two.</p>
<p>There should be three lines below with the word "PASS". Letter spacing is expected to vary.</p>
PASS<br>
<span>P</span><span>A</span><span>S</span><span>S</span><br>
PASS