Headline generation as in diary?

[Michael Heerdegen <michael_heerdegen@web.de>]

Hi,

I am mainly using the org agenda for day planning.  But there is a
functionality I seem to miss I know from diary:

With diary, I can use arbitrary Lisp expressions to generate dates, and
those expressions can also return a string to use as non-nil return
value to generate non-constant headlines including certain numbers for
example.  I can use that to implement when the next garbage
collection will come (rules for that are complicated since there are
exceptions etc), add reminders for certain important stuff, etc.

I would like to use my org file to specify those things instead of
maintaining a second file (the diary file).  But AFAIK the dynamically
created headline part is tricky: what appears in the agenda is always
the org headline as it appears in the file, right?

Or do I miss something?  How to other people deal with things
like...garbage collection?


TIA,

Michael.