From: Vadim Nasardinov <vadimn@...>
Date: 2004-03-19T00:22:13+09:00
Subject: Re: Thinking about a date-matching algorithm...

On Thursday 18 March 2004 01:40, Hal Fulton wrote:
> I did a little swapping of ideas with dblack on this. Now I'm
> opening discussion to anyone interested.
>
> I'm writing a little to-do manager (chiefly for my own use).
>
> I want to allow recurring tasks.

If you read elisp, you can borrow a lot of ideas from the Emacs
"calendar" and "diary" modes.  See
http://www.gnu.org/software/emacs/manual/html_chapter/emacs_32.html#SEC412

(or the Emacs info pages on your box.)

On an RPM-based system, you can find the relevant source files by
doing:

$rpm -qa 'emacs*'
emacs-leim-21.3-7
emacs-el-21.3-7
emacs-21.3-7
$rpm -ql emacs-el-21.3-7 | grep calendar.el
/usr/share/emacs/21.3/lisp/calendar/calendar.el
$grep reminder /usr/share/emacs/21.3/lisp/calendar/*.el | sed 's/:/\n  /'
/usr/share/emacs/21.3/lisp/calendar/diary-lib.el
  # diary-rem.sh -- repeatedly run the Emacs diary-reminder
/usr/share/emacs/21.3/lisp/calendar/diary-lib.el
                    Entry is a reminder for diary sexp SEXP.  DAYS is either a
/usr/share/emacs/21.3/lisp/calendar/diary-lib.el
                    reminders beforehand, the diary entry also appears on
...