LayoutTests/fast/inline/nested-inline-boxes-with-line-fit-edge.html

<style>
div {
  font-size: 20px;
  font-family: Monospace;
  margin: 100px;
}
span {
  line-fit-edge: cap alphabetic;
}
</style>
<div>PASS if <span>this <span>is <span>a <span>straight line</div>