css/css-text/white-space/trailing-other-space-separators-break-spaces-015.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Text level 3 Test: U+3000 at the end of line with white-space:break-spaces</title>
<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#white-space-phase-2">
<link rel="match" href="reference/trailing-other-space-separators-break-spaces-002-ref.html">
<meta name="assert" content="U+3000 at the end of the line must not hang or be discarded if white-space is break-spaces. It thus keeps its usual line breaking properties, as defined in UAX14.">
<meta name="flags" content="should">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
div {
  white-space: break-spaces;
  font-size: 10px;
  line-height: 1;
  width: 2em;
}
section {
  font-family: Ahem;
  float: left;
  margin: 0 1em;
  color: blue;
}
.ref {
  color: orange;
}
.ref div {
  white-space: pre;
}
</style>

<p>Test passes if the orange and blue parts of this page are identical.

<!--
 * There is no line breaking opportunity between two "x"
 * There is a line breaking opportunity between two "あ"
 * There is a line breaking opportunity after "x" or "あ"
   unless suppressed by the next character (BA, GL).
 * There is a line breaking opportunity before "x" or "あ"
   unless suppressed by the previous character (BB, GL).
-->
<section class=ref>
  <div>xx&#x3000;<br>あ<br>あ&#x3000;<br>あ<br>あ&#x3000;<br>xx</div><!-- BA, tailorable -->
</section>
<section>
  <div>xx&#x3000;ああ&#x3000;ああ&#x3000;xx</div>
</section>