css/css-ruby/collapse-trailing-whitespace.html

<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-text-3/#white-space-phase-2">
<link rel="help" href="https://crbug.com/376097115">
<link rel="stylesheet" href="/fonts/ahem.css">
<link rel="match" href="collapse-trailing-whitespace-ref.html"/>
<meta name="assert" content="A space after '|' should be preserved,
    a space after 'n' should be collapsed,
    and a space after 'go' should be preserved.">
<style>
p {
  font: 20px/1 Ahem;
  xtext-align: justify;
  xtext-align-last: justify;
  width: 12em;
}
ruby { color: blue; }
rt { color: orange; }
</style>

<p>nihongo | <ruby>n <rt>n</ruby><ruby>hon<rt>hon</ruby><ruby>go <rt>go</ruby>|</p>