Re: wish list: thread-gathering sort options

[Ken Raeburn <raeburn@raeburn.org>]

Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai Großjohann) writes:
> Ken Raeburn <raeburn@raeburn.org> writes:
>> E.  43380 30-Apr[  15:Stainless Steel] Re: Are the latest Oort features better 
>> E.      43387 01-May<  31:Karl Eichwalder> 
>> E.      43388 01-May<  10:Per Abrahamsen > 
>> E.          43395 01-May[  13:Kai Grojohann ] 
>> E.          43412 01-May[  21:Daniel Pittman ] 
>> E.              43418 02-May[  12:Kai Grojohann ] 
>> E.                  43419 02-May[  18:Daniel Pittman ] 
>> E   43341 30-Apr[  12:Lars Bjnnes   ] Can topic parameters set group level?
>> E       43365 30-Apr[  14:Josh Huber     ] 
>> E.          43383 30-Apr[  22:Lars Bjnnes   ] 
>> E.              43386 30-Apr[  28:Josh Huber     ] 
>>  .  43406 01-May[  19:Oystein Viggen ] bug with imap in newest ognus snapshot
>>  .      43408 01-May[  10:Simon Josefsson] 
>>  .          43409 01-May[  11:Oystein Viggen ] 
>>  .  43400 01-May[  17:Bill White     ] fast email downloading?
>>  .      43417 02-May[  22:Kai Grojohann ] 
>
> This sorting order is really strange: it is neither sorted by the
> root of the thread (43380, 43341, 43406, 43400 is not monotonic), nor
> is it sorted by the maximum number in each thread (43419, 43386,
> 43409, 43417 is not monotonic, either).

As I said before, the individual threads are sorted numerically by
highest number:

43380 43386 43387 43409 43417 43419

and then the threads with related subjects are gathered together and
kept at the position of the *first* of the threads in each set:

(43380,43387,43419) 43386 43409 43417

I don't think there was any reference/reply relationship between
43380, 43387, and 43388.  So they were different threads when the
sorting pass happened.  (There may have been common ancestor articles
in this instance, but in real life I'm also losing on articles where
there is no "references:" header at all but the subjects match, and I
configured Gnus to gather threads by matching subjects.)


> Maybe this is sorted by scores?

Nope, I don't use scoring.

Ken