Agenda of upcoming deadlines skips some deadlines

["Sebastien Vauban" <wxhgmqzgwmuf-geNee64TY+gS+FvcfC7Uqw@public.gmane.org>]

Hello,

I've (stolen?) the following custom agenda view.

#+begin_src emacs-lisp
                ("F" "Agenda of upcoming deadlines (6 months)"
                 agenda ""
                 ((org-agenda-ndays 1)
                  (org-deadline-warning-days 183)
                  (org-agenda-include-all-todo nil)
                  (org-agenda-time-grid nil)
                  (org-agenda-skip-function
                   '(org-agenda-skip-entry-if 'notdeadline))))
#+end_src

It works nicely, but for 2 aspects:

- future tasks that have *an explicit warning specification* are skipped!

  Example:

  * TODO Change car insurance
    DEADLINE: <2011-09-04 Sun -1m>

  is not shown because of the "-1m" (my default is 14 days, but I found that
  too little in this case). Removing it makes this task appear in the agenda
  view.

- scheduled tasks (in the past and/or for today) are shown, when paired with a
  deadline'd task.

  Example:

  * TODO Change of insurance company
    DEADLINE: <2011-09-04 Sun>
    SCHEDULED: <2011-06-06 Mon>

Any hint on how to fix these?

Best regards,
  Seb

-- 
Sebastien Vauban