Hi David,
That makes sense, but (a) I wasn't trying to start a new thread, and
(b) I replied to an existing message without changing the subject.
I did it here:
https://lists.nongnu.org/archive/html/nmh-workers/2022-02/msg00034.html
This message doesn't have References, so it should comply.
Have I muddied the waters? To clarify, I think changing the subject
within a thread as that subthread moves into a new area is fine and it
should remain part of the thread.
It boils down to: if mailing the list, only and always use reply if
you're actually replying to the mail in question.
--
Cheers, Ralph.