From mboxrd@z Thu Jan  1 00:00:00 1970
From: julien cubizolles <j.cubizolles@free.fr>
Subject: Re: Relative dates with sexep
Date: Fri, 17 Sep 2010 16:41:55 +0200
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To: e.fraga@ucl.ac.uk
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Le vendredi 17 septembre 2010 =C3=A0 09:01 +0100, Eric S Fraga a =C3=A9cr=
it :
> On Thu, 16 Sep 2010 18:27:18 +0200, julien cubizolles <j.cubizolles@fre=
e.fr> wrote:
> >=20
> > I'm trying to specify a date relative to another date in an org file.
> > I've tried to adapt one of the examples from worg, with :
> >=20
> >  <%%(=3D 7 (- (calendar-absolute-from-gregorian date)
> >             (calendar-absolute-from-gregorian (02 02 2010))))>
> >=20
> > to get the date one week after the 2nd of february 2010. Bad sexp...
>=20
> Quote the date: ... '(02 02 2010)
> as it is trying to evaluate the function "02" otherwise.

I'm trying to make it reusable by defining a function in my .emacs :

(defun diary-relative (n day)
  "Diary entry that will always appear N days from day"
  (=3D
   (calendar-absolute-from-gregorian date)
   (+ n (calendar-absolute-from-gregorian day))))

I try to use it with a sexp like :
<%%(diary-relative (7 '(09 15 2010)))>

which doesn't work. I really need to seriously read about lisp
programming...