search for DEADLINE in warning period

["Łukasz Stelmach" <lukasz.stelmach@iem.pw.edu.pl>]

Greetings.

Is there a way to search for a timestamp, particularly a DEADLINE, that
is in its warning period?

Eg.

--8<---------------cut here---------------start------------->8---

* TODO Pay the rent
  DEADLINE: <2010-03-05 Fri -5d +1m>

--8<---------------cut here---------------end--------------->8---

This is a repeatable item so it's always in TODO state and pollutes my
TODO list for 25 out of 30 days in a month. Doing simple 
`DEADLINE<="<+5d>"' does not satisfy me because there are notes I would
like to know about much earlier. That's why I'd like to facilitate the
timestamps' own warning periods.

It seems to be workaroundable by adding a SCHEDULED date

--8<---------------cut here---------------start------------->8---

* TODO Pay the rent
  SCHEDULED: <2010-03-01 +1m>
  DEADLINE: <2010-03-05 Fri -5d +1m>

--8<---------------cut here---------------end--------------->8---

and searching for `SCHEDULED>="<now>"'. But it builds two logs of

--8<---------------cut here---------------start------------->8---

  - State "DONE"       from "TODO"       [2010-02-01 Mon 14:23]

--8<---------------cut here---------------end--------------->8---

Is there a cleaner way to do it?

-- 
Miłego dnia,
Łukasz Stelmach