Re: Emacs Lisp date/time functions and RFC 3339?

[storm@cua.dk (Kim F. Storm)]

Andreas Schwab <schwab@suse.de> writes:

> storm@cua.dk (Kim F. Storm) writes:
>
>> Andreas Schwab <schwab@suse.de> writes:
>>
>>> "T. V. Raman" <raman@users.sf.net> writes:
>>>
>>>> The date/time handling functions in Emacs ---
>>>> calendar/time-date.el, together with the primitives for
>>>> encode-time and decode-time do not handle this format well, nor
>>>> does format-time-string.
>>>
>>> In which way does format-time-string not handle that format?
>>
>> E.g.  %z => -0800   whereas the rfc requests -08:00
>
> GNU date supports %:z, %::z and %:::z, should be easy to add that to
> format-time-string.

So we should add at least %:z .

>
>> Also for UTC, %z => 0000 whereas the rfc requests Z
>
> If you know that you are formatting UTC you can just put the Z in the
> format string.  The use of Z for UTC is not mandated.

The timezone is not optional.

   time-offset     = "Z" / time-numoffset

   partial-time    = time-hour ":" time-minute ":" time-second
                     [time-secfrac]

   full-time       = partial-time time-offset

   date-time       = full-date "T" full-time


-- 
Kim F. Storm <storm@cua.dk> http://www.cua.dk