input-pattern-valid.html

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<!DOCTYPE html>

<html>

  <!-- Test: if input is valid but its value hasn't been changed,

             it should not be affected by :-moz-ui-valid pseudo-class. -->

  <link rel='stylesheet' type='text/css' href='style.css'>

  <body>

    <input class='notvalid' pattern='foo' value='foo'>

  </body>

</html>