--TEST--
Bug #20273  Mail_mimePart::encodeHeader() and TAB character
--SKIPIF--
--FILE--
<?php
include("Mail/mimePart.php");

$refs = "<[email protected]>\t<[email protected]>";
$mime = new Mail_mimePart();
echo $mime->encodeHeader('References', $refs);
?>
--EXPECT--
<[email protected]> <[email protected]>