Re: Sorting with threads in Gnus

[Tassilo Horn]

Eric Abrahamsen <eric@ericabrahamsen.net> writes:

>> That's actually the same as the order I had before my latest change,
>> but maybe that was only a coincidence.  At least it seems more
>> correct to explicitly sort subthreads chronologically instead of not
>> sorting them at all.
>
> I think it defaults to sorting by article number, which often looks a
> lot like date -- docs seem to say that one is dependent on when the
> message is sent, and the other on when it arrives...

Yeah, but my code stopped sorting of subthreads at all.  So I basically
assumed that the threads were sorted according to article number before
they were passed to the thread sorting functions.  That's probably a
false assumption.

Anyway, my last changes made the name `gnus-sort-threads-recursively'
inappropriate.  And also it was only a minor step away from custom
subthread sorting.  So now I've implemented that:

,----
| commit fff80f88ef397fca65cb382217ce9c9a08b1329e
| Author: Tassilo Horn <tsdh@gnu.org>
| Date:   Tue Jul 30 09:52:15 2013 +0200
| 
|     Make subthread sorting customizable and add docs for it.
|     
|     * gnus-sum.el (gnus-subthread-sort-functions): New defcustom.
|     (gnus-sort-threads-recursively): Delete defcustom.
|     (gnus-sort-threads-recursive): Adapt accordingly.
|     
|     * gnus.texi (Sorting the Summary Buffer): Document new defcustom
|     `gnus-subthread-sort-functions' and remove the obsolete documentation
|     of `gnus-sort-threads-recursively'.
| 
`----

So `gnus-sort-threads-recursively' is gone now, and
`gnus-subthread-sort-functions' takes its place.  By default its value
is 'gnus-thread-sort-functions which means to sort subthreads also using
`gnus-thread-sort-functions', but you can set it to any list of sort
functions you want.

So now I use this:

--8<---------------cut here---------------start------------->8---
(setq gnus-thread-sort-functions '(gnus-thread-sort-by-number
                                   gnus-thread-sort-by-most-recent-date
                                   gnus-thread-sort-by-total-score)
      gnus-subthread-sort-functions '(gnus-thread-sort-by-number
                                      gnus-thread-sort-by-date)
      gnus-sort-gathered-threads-function 'gnus-thread-sort-by-date)
--8<---------------cut here---------------end--------------->8---

So threads are sorted from highest score/most recent article to lowest
score/least recent article, but inside threads I simply sort from old to
new.

Bye,
Tassilo