<!DOCTYPE html>

  <meta charset="UTF-8">

  <title>CSS Pseudo-Elements Test: active selection and consecutive preserved &amp;Tab;</title>

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
  <link rel="help" href="https://www.w3.org/TR/css-pseudo-4/#highlight-selectors">
  <link rel="help" href="https://www.w3.org/TR/css-text-3/#tab-size-property">
  <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
  <link rel="stylesheet" type="text/css" href="/fonts/ahem.css">

  <meta name="assert" content="In this test, tab characters are preserved and converted into 4 consecutive blank spaces. The background of such blank spaces can be painted. The lines are broken after each tab character since 'white-space: pre' preserves line breaks.">

  <style>
  div
    {
      background-color: red;
      color: red;
      float: left; /* or display: inline-block or position: absolute or width: 4em */
      font-family: Ahem;
      font-size: 25px;
      line-height: 1;
      /* -moz-tab-size: 4; */
      /*
      Implement 'tab-size' (dropping the -moz- prefix)
      https://bugzilla.mozilla.org/show_bug.cgi?id=737785
      */
      tab-size: 4;
      white-space: pre;
    }

  div::selection
    {
      background-color: green;
    }
  </style>

  <script>
  function startTest()
  {
  var targetRange = document.createRange();
  /* We first create an empty range */
  targetRange.selectNodeContents(document.getElementById("test"));
  /* Then we set the range boundaries to the children of div#test */
  window.getSelection().addRange(targetRange);
  /* Finally, we now select such range of content */
  }
  </script>

  <body onload="startTest();">

  <p>Test passes if there is a filled green square and <strong>no red</strong>.

  <div id="test">&Tab;
&Tab;
&Tab;
&Tab;</div>
