+test_begin_subtest 'Regexp search for second subject'
+# Note that missing field processor support really means the test
+# doesn't make sense, but it happens to pass.
+if [ $NOTMUCH_HAVE_XAPIAN_FIELD_PROCESSOR -eq 1 ]; then
+ test_subtest_known_broken
+fi
+cat <<EOF >EXPECTED
+MAIL_DIR/copy0
+MAIL_DIR/copy1
+MAIL_DIR/copy2
+EOF
+notmuch search --output=files 'subject:"/message 2/"' | notmuch_dir_sanitize > OUTPUT
+test_expect_equal_file EXPECTED OUTPUT
+