Re: gnus-icalendar errors in emacs 24.5

[Lars Magne Ingebrigtsen <lmi@gnus.org>]

Kostas Zorbadelos <kzorba@otenet.gr> writes:

> Org file exists and has a 'Calendar' headline.
> On export of a calendar mail (attached the calendar MIME part) I get the
> attached backtrace. I get the same backtrace even when I send a gmail
> calendar invitation. Any suggestions?

[...]

> Debugger entered--Lisp error: (error "Invalid date: 2016-02-25 Πεμ")
>   signal(error ("Invalid date: 2016-02-25 Πεμ"))
>   error("Invalid date: %s" "2016-02-25 Πεμ")
>  date-to-time("2016-02-25 Πεμ")

This is definitely a bug, and it comes from here:

(cl-defmethod gnus-icalendar-event:org-timestamp ((event gnus-icalendar-event))
  "Build `org-mode' timestamp from EVENT start/end dates and recurrence info."
  (let* ((start (gnus-icalendar-event:start-time event))
         (end (gnus-icalendar-event:end-time event))
         (start-date (format-time-string "%Y-%m-%d %a" start))

%a is the locale's day name, and that's not something `date-to-time' can
parse.  But I'm not familiar with gnus-icalendar, so I'm not sure what
the right fix is here.

Jan, is the week day supposed to be in these date strings at all?

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