Mark Sapiro writes:
> My question is the above logic implies that if the current message has
> an In-Reply-To and the replied to message is not in the archive, the
> message won't be threaded even if it has a References: to a message in
> the archive.
That's surely wrong.
> This occurs ofte
Mailman's pipermail archives are threaded based on In-Reply-To: and
maybe References: headers. It turns out the code always had a fallback
to thread by Subject: if there were no In-Reply-To: or References:
headers, but this fallback never worked due to a bug.
I have recently committed a fix to the
