testing/web-platform/tests/css/css-text/white-space/break-spaces-before-first-ideographic-char-013.html


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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Text Test: white-space: break-spaces</title>
<link rel="author" title="Javier Fernandez" href="mailto:jfernandez@igalia.com" />
<link rel="help" title="3. White Space and Wrapping: the white-space property" href="https://drafts.csswg.org/css-text-3/#white-space-property">
<link rel="help" title="5.5. Overflow Wrapping: the overflow-wrap/word-wrap property " href="https://drafts.csswg.org/css-text-3/#overflow-wrap-property">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#valdef-white-space-break-spaces">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#valdef-overflow-wrap-anywhere">
<link rel="match" href="reference/white-space-break-spaces-005-ref.html">
<meta name="flags" content="ahem">
<meta name="assert" content="A breaking opportunity exists before the first character of a sequence of ideographic spaces to avoid the line overflow, honoring the overflow-wrap property.">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
div {
  font: 25px/1 Ahem;
}
.fail {
  position: absolute;
  color: red;
  z-index: -1;
}
span { color: green; }
.test {
  color: green;
  width: 4ch;

  white-space: break-spaces;
  overflow-wrap: anywhere;
}

</style>
<body>
  <p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
  <div class="fail">XXXX<br><span>X</span>XX<span>X<br></span><span>XXXX<br></span><span>XXXX<br></span></div>
  <div class="test">XXXX&#x3000;XX</div>
</body>