List etiquette

[Jamon Camisso]

Ian Zimmerman wrote:
> Xref has nothing (well, little) to do with threading.  It is used to
> suppress articles that are posted to multiple groups or immediately
> mark them as read, so you don't have to read them twice.  You confuse
> this with References, see below.
> 
> William> Close.  The header most often referenced is In-Reply-To, as
> William> referenced by RFC 822. 
> 
> Close :-)
> 
> 822 has long been superceded by 2822, which specifies in much more detail
> the newer References header (which collects _all_ Message-Ids from the
> preceding thread, not just the last one).
> 
> Mailers that conform to 822 but not 2822 (and unfortunately some are
> still extant, such as Eudora 5.x) are part of the problem, because some
> _readers_ will look at References first, and if References is botched
> they get confused even if In-Reply-To is correct.

So the breakage occurs when someone replies to a message, deletes the 
body, and changes the subject? With a blank message and no subject the 
header remains and threads the message improperly (to us users, but 
correctly to whichever program is doing the threading) correct?

Jamon


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