# so in multipart (e.g. GPG-signed) messages, the list trailer
# becomes invisible to MIME-aware email clients.
if ($s =~ s/$l0\n$l1\n$l2\n$l3\n($l4\n)?\z//os) {
# so in multipart (e.g. GPG-signed) messages, the list trailer
# becomes invisible to MIME-aware email clients.
if ($s =~ s/$l0\n$l1\n$l2\n$l3\n($l4\n)?\z//os) {