+test_begin_subtest "Mislabeled Windows-1252 encoding"
+add_message '[content-type]="text/plain; charset=iso-8859-1"' \
+ "[body]=$'This text contains \x93Windows-1252\x94 character codes.'"
+cat <<EOF > EXPECTED
+\fmessage{ id:XXXXX depth:0 match:1 excluded:0 filename:XXXXX
+\fheader{
+Notmuch Test Suite <test_suite@notmuchmail.org> (2001-01-05) (inbox unread)
+Subject: Mislabeled Windows-1252 encoding
+From: Notmuch Test Suite <test_suite@notmuchmail.org>
+To: Notmuch Test Suite <test_suite@notmuchmail.org>
+Date: GENERATED_DATE
+\fheader}
+\fbody{
+\fpart{ ID: 1, Content-type: text/plain
+This text contains “Windows-1252” character codes.
+\fpart}
+\fbody}
+\fmessage}
+EOF
+notmuch show id:${gen_msg_id} 2>&1 | notmuch_show_sanitize_all > OUTPUT
+test_expect_equal_file EXPECTED OUTPUT
+