--- /dev/null
+--TEST--
+Bug #2364 Tabs in Mail_mimePart::quotedPrintableEncode()
+--SKIPIF--
+--FILE--
+<?php
+$test = "Here's\t\na tab\n";
+require_once('Mail/mimePart.php');
+print Mail_mimePart::quotedPrintableEncode($test, 7);
+?>
+--EXPECT--
+Here's=
+=09
+a tab