Value of header "To: Undisclosed recipients:;" is missing space ("Undisclosedrecipients")

[fundo-moretti]

It's probably not very important, but there's an inconsistency between version 2.x and 3.x concerning the To header when it has the value "Undisclosed recipients:;".

Source:

From: Test <[email protected]>
Subject: Subject
To: Undisclosed recipients:;

Code:

$mailParser = new MailMimeParser();
$message = $mailParser->parse($source, false);
$headerTo = $message->getHeader('To');
echo $headerTo->getParts()[0]->getValue()

Output in release 2.4.1: "Undisclosed recipients"
Output in release 3.0.2: "Undisclosedrecipients"

Attached, dump of $headerTo->getParts() for both releases:
dump.txt

[zbateson]

Good find, that one could've lingered, thank you!

[zbateson]

Released in 3.0.3, let me know if you have any issues.