[OFB Cafe] Threading (was: BioFuels)

[Derek Broughton]

On July 22, 2008 21:21:51 Chris Olson wrote:
>
> WLM, like OE, does not use a References: header.


> In the absence of a 
> References: header GNU Mailman copies the In-Reply-To: header, which
> contains the Message-ID of the message being responded to, to its own
> References: header and tacks it on the message, which then breaks the
> threading in clients that use only the References: header because it
> mangles something in the copy.  

In-Reply-To: 
<6.2.5.6.2.20080717212209.0c383e08 at BowersFamily.US><200807221031.57334.auspex at pointerstop.ca><BLU132-DS62F6F4D0136827FD48B619F850 at phx.gbl>
        <200807221646.01959.auspex at pointerstop.ca>
References: 
<6.2.5.6.2.20080717212209.0c383e08 at BowersFamily.US><200807221031.57334.auspex at pointerstop.ca><BLU132-DS62F6F4D0136827FD48B619F850 at phx.gbl>
        <200807221646.01959.auspex at pointerstop.ca>
 
My editor says there are no extra characters there, but it still doesn't 
thread after any of the referenced messages.  I took a copy, deleted the 
References header and put it back in my mail store, and it still doesn't 
thread.  If I delete the In-reply-to header, it does thread properly, which 
tells me my mail program preferentially uses In-Reply-To.

Meanwhile, everybody else's mails have similar headers, and _do_ thread 
properly - even if I delete either the In-Reply-To or References header.

Now, when I check: http://www.jwz.org/doc/threading.html it tells me that 
RFC2822 says In-Reply-to may contain a list of message "IDs of the messages 
to which this one is a direct reply".  Only one of those IDs _is_ the direct 
parent of the message you send, which means Windows Mail is still broken (or 
to use your terminology "the de facto standard").
-- 
derek