Group Line Specification Problem

[Jean-Yves Perrier <perrier@nagra-kudelski.ch>]

Hello,

I have the following problem:

I want my group buffer to looks like:

[ Gnus -- 0 ]
  [ misc -- 0 ]
*        0: other                    |                    ++++|  (nnml:)
         *: drafts                   |                      ++|  (nndraft:)
  [ Emacs -- 0 ]
    [ Mail/News/AddressBook/Calendar/W3 -- 0 ]
*          0: gnu.emacs.gnus         |          ..............|  (nntp:cachou)
*          0: gnus.dev               |                     +++|  (nnml:)
*          0: bbdb.dev               |                     +++|  (nnml:)
    [ Windoze -- 0 ]
*          0: nt.emacs               |                    ++++|  (nnml:)
  [ OOP -- 0 ]
*        0: oo.gang-of-4-patterns    |                     +++|  (nnml:)

(Don't worry about the . and the +: it is a timestamp histogramm).

I have the following group line definition:
(setq gnus-group-line-format "%M%S%p%P%5y: %(%~(pad-right 25)G%)|%24uz|  %l%z\n")

But this don't take into account the 'folding' of the topic. So I end up with:
[ Gnus -- 0 ]
  [ misc -- 0 ]
*        0: other                    |                    ++++|  (nnml:)
         *: drafts                   |                      ++|  (nndraft:)
  [ Emacs -- 0 ]
    [ Mail/News/AddressBook/Calendar/W3 -- 0 ]
*          0: gnu.emacs.gnus           |          ..............|  (nntp:cachou)
*          0: gnus.dev                 |                     +++|  (nnml:)
*          0: bbdb.dev                 |                     +++|  (nnml:)
    [ Windoze -- 0 ]		       
*          0: nt.emacs                 |                    ++++|  (nnml:)
  [ OOP -- 0 ]
*        0: oo.gang-of-4-patterns    |                     +++|  (nnml:)

				     ^^^
                                     That's the problem.

which I find ugly.

Is there a way, probably in the definition of %(%~(pad-right 25)G%), to take
in account the folding indent?

Best regards,
-- 
Jean-Yves