Re: Use entire subject when sorting summary buffer

[Simon Josefsson <jas@extundo.com>]

Niklas Morberg <niklas.morberg@axis.com> writes:

> We have a corporate spam filter that puts `[SPAM]' in the
> Subject of suspected spam. When sorting a folder that
> contains these messages by subject, the `[SPAM]' part is
> ignored.
>
> I sent a test message to myself with `[TEST] a' as Subject.
> This got sorted as the letter a
>
> In other words: only the text after brackets are used for
> sorting. I would like to use the brackets and the text
> within brackets as well when sorting.
>
> I have set:
>
>      (gnus-simplify-subject-functions nil)
>      (gnus-simplify-ignored-prefixes nil)
>      (gnus-thread-sort-functions '(gnus-thread-sort-by-subject))))
>
> using gnus-parameters. `C-h v variable' in the summary
> buffer tells me that the above settings are in effect.
>
> Is there anything else I need to set/unset?

Try:

(setq gnus-thread-sort-functions '(my-gnus-thread-sort-by-subject))

(defun my-gnus-article-sort-by-subject (h1 h2)
  "Sort articles by root subject."
  (string-lessp
   (downcase (mail-header-subject h1))
   (downcase (mail-header-subject h2))))

Compare with original:

(defsubst gnus-article-sort-by-subject (h1 h2)
  "Sort articles by root subject."
  (string-lessp
   (downcase (gnus-simplify-subject-re (mail-header-subject h1)))
   (downcase (gnus-simplify-subject-re (mail-header-subject h2)))))