[PATCH 7/6] address: avoid [ undef, undef ] address pairs

[Eric Wong <e@80x24.org>]

For totally bogus things in address fields, we'll fall back to
showing the original entry in the name column when using
Email::Address::XS.

The pure Perl version differs here, but we'll just let them be
different when it comes to handling bogus data.
---
 This fixes some warning spew I noticed in syslog while letting
 crawlers run on https://yhbt.net/lore/

 lib/PublicInbox/Address.pm | 7 +++++--
 lib/PublicInbox/View.pm    | 2 +-
 t/address.t                | 4 ++++
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/lib/PublicInbox/Address.pm b/lib/PublicInbox/Address.pm
index a5902cfd..3a59945c 100644
--- a/lib/PublicInbox/Address.pm
+++ b/lib/PublicInbox/Address.pm
@@ -19,8 +19,11 @@ sub xs_names {
 }
 
 sub xs_pairs { # for JMAP, RFC 8621 section 4.1.2.3
-	[ map { # LHS (name) may be undef
-		[ $_->phrase // $_->comment, $_->address ]
+	[ map { # LHS (name) may be undef if there's an address
+		my @p = ($_->phrase // $_->comment, $_->address);
+		# show original if totally bogus:
+		$p[0] = $_->original unless defined $p[1];
+		\@p;
 	} parse_email_addresses($_[0]) ];
 }
 
diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm
index 39ec35c3..9d4262c1 100644
--- a/lib/PublicInbox/View.pm
+++ b/lib/PublicInbox/View.pm
@@ -230,7 +230,7 @@ sub to_cc_html ($$$$) {
 			}
 		}
 		$line_len += length($n);
-		$url = $addr2url->{lc $pair->[1]};
+		$url = $addr2url->{lc($pair->[1] // '')};
 		$html .= $url ? qq(<a\nhref="$url$t">$n</a>) : $n;
 	}
 	($html, $len + $line_len);
diff --git a/t/address.t b/t/address.t
index 16000d2d..86f47395 100644
--- a/t/address.t
+++ b/t/address.t
@@ -77,6 +77,10 @@ sub test_pkg {
 	is_deeply([], \@emails , 'no address for local address');
 	@names = $emails->('Local User <user>');
 	is_deeply([], \@names, 'no address, no name');
+
+	my $p = $pairs->('NAME, a@example, wtf@');
+	is scalar(grep { defined($_->[0] // $_->[1]) } @$p),
+		scalar(@$p), 'something is always defined in bogus pairs';
 }
 
 test_pkg('PublicInbox::Address');