[2013-02-07 00:49 UTC] slusarz at curecanti dot org

Description:
------------
The QP stream filter is incorrectly discarding whitespace at the end of the lines.  The quoted_printable_encode() method does not have this issue.

This is troublesome when attempting to save flowed text/plain data, as it causes the data to lose its flowed formatting.  (I realize that RFC 3676 says flowed text SHOULD NOT be encoded in QP, but this is an (arguably) outdated policy restriction and not a technical restriction).

Test script:
---------------
<?php

$data = "FIRST \r\nSECOND";

$fp = fopen('php://temp', 'w+');
stream_filter_append($fp, 'convert.quoted-printable-encode', STREAM_FILTER_WRITE, array(
    'line-length' => 76
));
fwrite($fp, $data);
rewind($fp);

print quoted_printable_encode($data) . "\n";
print stream_get_contents($fp);

Expected result:
----------------
FIRST=20
SECOND
FIRST=20
SECOND

Actual result:
--------------
FIRST=20
SECOND
FIRST
SECOND