eml: decode Bcc, and Resent-* address variants

This is closer to matching RFC 8621 section 4.1.2.3,
though we don't support the "Any header field not defined in
RFC5322 or RFC2369" rule, since that could get tricky...

diff --git a/lib/PublicInbox/Eml.pm b/lib/PublicInbox/Eml.pm
index 0697c3a50babd4a328a64905e7af07474d6b0afa..46c273cea3ebcd726a9b7cde331cac1514fbc961 100644 (file)
--- a/lib/PublicInbox/Eml.pm
+++ b/lib/PublicInbox/Eml.pm
@@ -51,7 +51,9 @@ $MIME_ENC{quotedprint} = $MIME_ENC{'quoted-printable'} = $MIME_ENC{qp};
 $MIME_DEC{quotedprint} = $MIME_DEC{'quoted-printable'} = $MIME_DEC{qp};
 $MIME_ENC{$_} = \&identity_codec for qw(7bit 8bit binary);
 
-my %DECODE_ADDRESS = map { $_ => 1 } qw(From To Cc Sender Reply-To);
+my %DECODE_ADDRESS = map {
+       ($_ => 1, "Resent-$_" => 1)
+} qw(From To Cc Sender Reply-To Bcc);
 my %DECODE_FULL = (
        Subject => 1,
        'Content-Description' => 1,