Re: org table problems with sorting of some column

[Tim Cross]

Uwe Brauer <oub@mat.ucm.es> writes:

> [[S/MIME Signed Part:Undecided]]
>>>> "TC" == Tim Cross <theophilusx@gmail.com> writes:
>
>> Uwe Brauer <oub@mat.ucm.es> writes:
>
>
>> For problem 1, I suspect you will need to either change the date format
>> or tell org what the date format is. It won't work trying to sort
>> numerically as those values are not really numerical values. The date
>> format you currently have I think is ambiguous - in Europe it would
>> represent dd-mm-yyyy, but in the US it would represent mm-dd-yyyy. Best
>> solution would be to convert the values into an ISO format i.e.
>> yyyy-mm-dd.
>
> I just checked 
> I have the setting 
> ,----
> | org-time-stamp-custom-formats is a variable defined in ‘org.el’.
> | Its value is (" %d.%m.%Y " . " %d.%m.%Y %a %H:%M ")
> `----
>
> But this as I understand only effect via 
> ‘org-display-custom-times’ the representation. 
>
> It does not help me to recognise  28.04.2020 as a European date.
>
> [[End of S/MIME Signed Part]]

I suspect org is actually passing off the sorting/comparison to calc
(based on nothing but a guess of course). I would look into how calc
determines the format for date/time calculations and see if that can
help.