Use cases for recurrence

[gour]

Hello,

In order to not clutter #2338 further here I'm opening a new thread in regard to "recurrence overhaul"...

I still consider that TW is the best feature/ui-wise, but since I have lot of recurring tasks, adjusting time-shifts etc. has becoem too much work and seeing the further development kind of stalled I did move to Etm which uses Python's dateutil package and thanks to it it can define all kinds of complex recurring events.

Here is one example from the manual:

Text entry supports the full flexibility of the superb Python dateutil package. 
Consider, for example, creating a reminder for Presidential election day 
which repeats every 4 years on the first Tuesday after a Monday in November 
(a monthday falling between 2 and 8). In etm, this event would be

  * Presidential election day @s nov 1 2020 @r y &i 4 &M 11
    &m 2, 3, 4, 5, 6, 7, 8 &w tu

so I just wonder if it would be possible for TW-3.0 to take advantage of such libraries?

Sincerely,
Gour

[kwoot]

Incorporating a Python library into a C++ code base is a challenge on its own and not for the faint of heart.
Although I am not a C++ programmer I expect this to be marked as a future feature request at best.
Just my 2 cents of course.

[tbabej]

Indeed we would not be able to build upon the shoulders of dateutil, but we might be able to re-implement some of it behaviour. @gour Is there a specific behaviour that you have in mind?

[gour]

@tbabej Well, TW should be able, similar to Etm or org-mode support recurring tasks similar to the one I mentioned above. For the beginning, at least, it should be possible to have new instances of recurring tasks to be created after the task is completed and not based on recurring period. Here is an interesting discussion in regard.