test/emacs: mark one test as fixed in newer emacs.

The remaining problem in this test is fixed upstream in Emacs
28. While most people are using earlier versions of emacs, the test
still provides some documentation of a known bug.

diff --git a/test/T450-emacs-show.sh b/test/T450-emacs-show.sh
index 4b5f5fdecafde48f5e36bf822a6b27534dcc93e4..057ad37ee30e1a1e90fef01f82edac906c5101f4 100755 (executable)
--- a/test/T450-emacs-show.sh
+++ b/test/T450-emacs-show.sh
@@ -220,7 +220,9 @@ test_emacs '(notmuch-show "id:basic-encrypted@crypto.notmuchmail.org")
 test_expect_equal_file $EXPECTED/notmuch-show-decrypted-message OUTPUT
 
 test_begin_subtest "show encrypted rfc822 message"
-test_subtest_known_broken
+if ${TEST_EMACS} --quick --batch --eval '(kill-emacs (if (version< emacs-version "28") 0 1))'; then
+    test_subtest_known_broken
+fi
 test_emacs '(notmuch-show "id:encrypted-rfc822-attachment@crypto.notmuchmail.org")
             (test-visible-output)'
 test_expect_code 1 'fgrep "!!!" OUTPUT'