<!DOCTYPE html>
<style>
    .ref span { display:inline-block; width:1em; }
</style>
<p>Test insertion of a spanner that comes right after another spanner, and precedes column content.</p>
<p>There should be four lines below with the word "PASS". Letter spacing is expected to
vary. The first line should be in <span style="color:green;">green</span>. The second one
in <span style="color:blue;">blue</span>, the third one
in <span style="color:olive;">olive</span>, and the fourth one
in <span style="color:orange;">orange</span>.</p>
<div class="ref" style="color:green;">
    <span>P</span><span>A</span><span>S</span><span>S</span>
</div>
<div style="color:blue;">PASS</div>
<div style="color:olive;">PASS</div>
<div class="ref" style="color:orange;">
    <span>P</span><span>A</span><span>S</span><span>S</span>
</div>