+if ('UTF-8 References') {
+ my @w;
+ local $SIG{__WARN__} = sub { push @w, @_ };
+ my $msg = <<EOM;
+From: a\@example.com
+Subject: b
+Message-ID: <horrible\@example>
+References: <\xc4\x80\@example>
+
+EOM
+ ok($im->add(PublicInbox::Eml->new($msg."a\n")), 'UTF-8 References 1');
+ ok($im->add(PublicInbox::Eml->new($msg."b\n")), 'UTF-8 References 2');
+ $im->done;
+ ok(!grep(/Wide character/, @w), 'no wide characters') or xbail(\@w);
+}
+