+my $enc_dup = 'ref-20150309094050.GO3427@x1.example';
+
+my $dibx = create_inbox 'v2-dup', version => 2, indexlevel => 'medium',
+ tmpdir => "$tmpdir/dup", sub {
+ my ($im, $ibx) = @_;
+ my $common = <<"";
+Date: Mon, 9 Mar 2015 09:40:50 +0000
+From: x\@example.com
+To: y\@example.com
+Subject: re
+Message-ID: <$enc_dup>
+MIME-Version: 1.0
+
+ $im->add(PublicInbox::Eml->new($common.<<EOM)) or BAIL_OUT;
+Content-Type: text/plain; charset=utf-8
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+cr_mismatch
+pipe \x{e2}\x{94}\x{82} or not
+EOM
+ $im->add(PublicInbox::Eml->new($common.<<EOM)) or BAIL_OUT;
+Content-Type: text/plain; charset="windows-1252"
+Content-Transfer-Encoding: quoted-printable
+
+cr_mismatch\r
+pipe =E2=94=82 or not
+EOM
+};
+