That was actually about lack of a References header, and I agree, that
there should be one (and we have one now, so that's a non-issue).
You had asked if anyone actually uses the References header for threading,
and it turns out the answer here is "yes!".
Some of the issue here, is that there's no concept of a "thread" in the
e-mail standards, and everyone defines it slightly differently.
Yeah, I mean ... I think that came over from Usenet, right? I remember
the trn mail reader had a nice ASCII display that showed the message tree.
I admit that for me, a message "thread" sounds kind of linear, where a
"tree" is probably closer to the reality. I guess it's a set of messages
which are all replies to one another.
--Ken
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