Re: What does `gathering loose threads' mean?

[Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai Großjohann)]

On 09 Aug 2000, Paul Jarc wrote:

> Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai
> =?iso-8859-1?q?Gro=DFjohann?=) writes:
>> If I have two messages with the same subject (but otherwise
>> unrelated), they will be displayed near to each other in the
>> summary buffer.
>> 
>> Where does this come from?
> 
> Testing whether two articles are in the same thread is controlled by
> the variable gnus-summary-thread-gathering-function.  Loose threads
> are a somewhat separate matter, regarding the sorting of articles
> within a thread, IIUC.

Sorting within a thread?  Hm.  The documentation seems to be talking
about comparing subject headers for equality (or fuzzy equality).

>> This lead me to thinking that Gnus looks at the References header
>> of message 1 and at the References header of message 2 and if MsgId
>> foo occurs in both headers, then the two messages are in the same
>> thread.
> 
> If that's what you want, you can do:
> (setq gnus-summary-thread-gathering-function
>       'gnus-gather-threads-by-references)
> By default, it's set to gnus-gather-threads-by-subject.

No, I think I want gnus-gather-threads-by-subject.

>> Maybe the documentation should be changed to more explicitly point
>> out that loose threads gathering does NOT look at the References
>> header, but ONLY at the Subject header.
> 
> gnus-summary-thread-gathering-function is documented at the end of
> the `Loose Threads' node.
> 
>> What is the minimum configuration that will do loose threads
>> gathering?  (I think it is sufficient to set
>> gnus-summary-make-false-root to a non-nil value, but I'm not sure.)
> 
> That controls the insertion of dummy lines for missing articles in
> the thread.  If you just want articles with common References: to be
> in the same thread, without filling in gaps with dummy lines, then
> setting gnus-summary-thread-gathering-function should suffice.

I want two articles with the same subject to be sorted together, even
if neither of them contains a References header.

Is it sufficient to set gnus-summary-thread-gathering-function to
gnus-gather-threads-by-subject to achieve this, or is it also
necessary to set gnus-summary-make-false-root?

kai
-- 
I like BOTH kinds of music.