test/emacs: adapt to breaking change in Gnus defaults

As of Emacs 29.1, In-Reply-To is in the default value for
message-hidden-headers. We actually want to see that in the test
suite, so remove it again. To future proof the tests, fix a default
value for message-hidden-headers specifically for the test suite.

diff --git a/test/test-lib.el b/test/test-lib.el
index 79a9d4d6fc5b574cbd21e6e9bd27039689a2d01a..236dd99edc9da97e4903831ce85127aaa2470082 100644 (file)
--- a/test/test-lib.el
+++ b/test/test-lib.el
@@ -205,3 +205,8 @@ running, quit if it terminated."
 ;; environments
 
 (setq mm-text-html-renderer 'html2text)
+
+;; Set our own default for message-hidden-headers, to avoid tests
+;; breaking when the Emacs default changes.
+(setq message-hidden-headers
+      '("^References:" "^Face:" "^X-Face:" "^X-Draft-From:"))