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--TEST--
Bug #20273 Mail_mimePart::encodeHeader() and TAB character
--SKIPIF--
--FILE--
<?php
include("Mail/mimePart.php");
$refs = "<test@domain.tld>\t<test2@domain.tld>";
$mime = new Mail_mimePart();
echo $mime->encodeHeader('References', $refs);
?>
--EXPECT--
<test@domain.tld> <test2@domain.tld>
b IDATxytVսϓ22 A@IR:hCiZ[v*E:WũZA ^dQeQ @ !jZ'>gsV仿$|?g)&x-E