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-No change in my example php code below

• upgrade to mail_mime 1.10.5, the boundary in the Content-Type: multipart/alternative header is different from the body
• downgrade to mail_mime 1.10.4, the boundary in the header is the same as in the body. Correct.
• as per the warning in the changelog of 1.10.5, I am not setting Content-Transfer-Encoding on multipart messages. mail_mime defaults to multipart/alternative.

Example code:
$mime = new Mail_mime(array('eol' => PHP_EOL));
$mime->setTXTBody($text);
$mime->setHTMLBody($html);
$mime_params = array(
'text_encoding' => '7bit',
'text_charset' => 'UTF-8',
'html_charset' => 'UTF-8',
'head_charset' => 'UTF-8'
);
$body = $mime->get($mime_params);
$hdrs = array(
'From' => $from,
'Subject' => $subject,
'To' => $to
);
$hdrs = $mime->headers($hdrs);
$msg = '';
foreach ($hdrs as $key => $val){
$msg .= $key.": ".$val.PHP_EOL;
}
$msg .= PHP_EOL."This is a multi-part message in MIME format.".PHP_EOL;
$msg .= $body;
echo $msg;
//----------------------------------------------------

//correct (expected) result: from 1.10.4
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="=_15b567cd99cd8009c9780e9d7d92e055"
From: XXX [email protected]
Subject: YYY
To: ZZZ

This is a multi-part message in MIME format.
--=_15b567cd99cd8009c9780e9d7d92e055
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=UTF-8

Please view this mail in a HTML-capable mail client
--=_15b567cd99cd8009c9780e9d7d92e055

//-----------------------------------------------------------------------------

Incorrect result (from 1.10.5)
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="=_06f4d55e551f6d0099afe89eaae519b2"
From: XXX [email protected]
Subject: YYY
To: ZZZ

This is a multi-part message in MIME format.
--=_2e148fc164447df3cad439932ec7c841
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=UTF-8

Please view this mail in a HTML-capable mail client
--=_2e148fc164447df3cad439932ec7c841

After upgrading to 1.10.10, I am noticing a strange behaviour: backslash is getting added in the content

Eg:

From: "George B@@z"[email protected] is getting changed to
From: "\"George" B@@z"[email protected]

In the recipient list (To header), there is newline getting added with backslash

"Abel Thomas" [email protected] is getting changed to
"Abel\
Thomas" [email protected]

On PEAR, 1.10.10 has been released, but on packagist, it is still 1.10.9. Please update it.

Can you please upload the 1.10.7 release to https://packagist.org/

(Apologies for logging this here, but the PEAR bug tracker seems to be broken and throws an error when I try to submit a bug.)

There are a few places in the codebase that have recently been updated to remove the middle part of a ternary operator.

For example, in mime.php, line 795 has been changed from:

        return $res ? $res : true;

to

        return $res ?: true;

This needlessly breaks support for php < 5.3 and should be reverted.

I believe it has something to do with: $n_encoding = null , $f_encoding = null. But I can't figure out exactly what I'm doing wrong. Any idea on what to put there to make the filename not gibberish?

Great Library otherwise!