[Ml-yokadi] Quaterly recurrence patch

[Aurélien Gâteau]

Sébastien Renard wrote:
> Le mardi 21 juillet 2009 11:24:47, Jonas Christian Drewsen a écrit :
>>     I think quaterly is a pretty common term for "every three months".
>>    
>> E.g. Dictionary.com : "a periodical issued every three months.".
>>
>> I myself need it for "quaterly report" tasks :)
> 
> Sure, but that's not what your patch seems to do. It shedule a task for 
> Janury, April, July and October whatever the current month is. So, as we are 
> in July everything is fine but if you define a quarterly task in august, the 
> next occurrence will be in october, not november as it could be expected.
> 
> Both two behaviour are correct, but I would like to be sure that you did it 
> intentionnaly.

I am beginning to wonder whether we should stop adding too many
recursion keywords and instead provide a cron-like syntax for advanced
users.

A quarterly report like Jonas implemented would be something like this:

  t_recurs 12 0 0 0 1-4-7-10 *

or:

  t_recurs 12 0 0 0 1-12/3 *

I think it would fit quite well with the Pythonic "make simple things
simple and complex things possible".

(and this will give me a way to be reminded to get my paper trashcan on
the street at 19:00 on monday every two weeks: "t_recurs 12 0 19 * *
mon/2" :))

Aurélien