Package: emacs
Severity: wishlist
Tags: patch

Hello,

This patch implement Group Mail Spliting on mailing-list headers, I'm
using it since a long time now.

This avoid the burden of cross-mailing-list posting when a mail is
sent to 4 mailing-lists and finish duplicated 4 times in each
mailing-list group.

The trick is to to mangle the split-regexp to conform with RFC2919 list
IDs.

The following `gnus-parameters`:

#+begin_src emacs-lisp
    ("gnu.emacs.gnus.ding"
     (to-list . "ding@gnus.org")
     (match-list . t)
     (subscribed . t))
#+end_src

Produce the following fancy split:

#+begin_src emacs-lisp
    (list "\\(ding[@.]gnus\\.org\\)" "gnu.emacs.gnus.ding")
#+end_src