MIME::Lite::HTML bombs on build_mime_object if the txt & html message
are both blank.
From a high-level review, this seems to be a change in the case
statements for v 1.22.
In version 1.18, for example, there was a final else without any case
checks in build_mime_object.
version 1.22 adds a elsif ($txt && @$ref_mail) {
So if you send in a blank txt and html message, no $mail object is
created and because the object doesn't exist:
$mail->replace('X-Mailer',"MIME::Lite::HTML $VERSION"), fails with the
following error:
"Can't call method "replace" on an undefined value at
/usr/local/lib/perl5/site_perl/5.8.0/MIME/Lite/HTML.pm line 475."
To fix, perhaps an if defined check or a new else statement? It is
theoretically "legit" to send a blank email so I don't think erroring
that the message is blank is "ok".
RT for rt.cpan.org