Re: jump to iso-week in agenda

[Carsten Dominik <dominik@science.uva.nl>]

On Mar 15, 2008, at 5:00 PM, Thomas Baumann wrote:

> Hi,
>
> I really like the most advanced (pure magic working ...) and easy  
> way of
> entering dates in org mode. When answering a phone call it's only a  
> few
> keystrokes to jump to the date and settle the appointment. However  
> there
> are some people thinking in weeks (iso-week). So when those friends  
> call
> it get's much more complicated. Currently when I would like to jump to
> say week 46, I might find an old paper calendar or M-x
> calendar-goto-iso-week.
>
> How difficult would it be to
> (a) add the current iso-week into the headline of the Week-View

That does not work, because the week view may or may not start
on a Monday, so it may contain days from two different weeks.
For now I am adding the ISO week number to every date in the
agenda, if this seems too cluttered we need to think of a
different solution.

> (b) include magic jump to a certain week eg. *46 to jump to week 46

I have just pushed the necessary changes into the git repo.  Here is the
user interface:


Suport for ISO week dates (ISO 8601)
------------------------------------

     Dates in the agenda now show the ISO week and day
     specification, in the form `W08 2', meaning Tuesday of
     week 2.

     The keys `d', `w', `m', and `y' in the agenda view now accept
     prefix arguments.  Remember that in the agenda, you can
     directly type a prefix argument by typing a number, no need
     to press `C-u' first.  The prefix argument may be used to
     jump directly to a specific day of the year, ISO week, month,
     or year, respectively.  For example, `32 d' jumps to February
     1st, `9 w' to ISO week number 9.  When setting day, week, or
     month view, a year may be encoded in the prefix argument as
     well.  For example, `200712 w' will jump to week 12 in
     2007.  If such a year specification has only one or two
     digits, it will be mapped to the interval 1938-2037.

     When entering a date at the date prompt, you may now also
     specify an ISO week.  For example

      w4              Monday of week 4
      fri w4          Friday of week 4
      w4-5            Same as above
      2012 w4 fri     Friday of week 4 in 2012.
      2012-W04-5      Same as above

     So far I have not activated the effect of
     `org-read-date-prefer-future' on this functionality, because
     it seemed too unpredictable for me (as I usually do not know
     which week I am in).  I'd appreciate comments on this
     issue:  Should `org-read-date-prefer-future' also push dates
     into the next year if the week you are entering has already
     passed in the current year?  For consistency I guess this
     should be the case, but I cannot quite wrap my head around
     it.

     I hope but am not entirely convinced that this will behave
     sanely also during the first/last week of a year.  Please
     test extensively and report back.


Enjoy!

- Carsten