>> "Jan" == Jan Tatarik <jan.tatarik@gmail.com> writes:

   > On Sun, May 05 2013, Uwe Brauer wrote:
   >> Hello 
   > cl-lib contains elisp equivalents of some Common Lisp macros, I think
   > this is Emacs 24 specific.

   > ical-event was developed using Emacs 24, so compatibility with any other
   > version or flavor of Emacs would be purely accidental.

Thanks for you fast answer.
   > I want to eventually get the feature in Gnus proper, so if you have a
   > look at

   > https://github.com/jtatarik/gnus/blob/icalendar/lisp/gnus-icalendar.el

   > you should find a newer version of the code with some of the Emacs24
   > specifics removed.


This is very good, thanks 
   > I have not tested the code against any other Emacs versions/flavors yet,
   > so I cannot guarantee it will work for you immediately, but cl-lib is
   > not a dependency anymore. eieio still is, however, and if it is not
   > shipped with your Emacs you will want to install the cedet package
   > http://cedet.sourceforge.net/


Ok that I have installed for Xemacs.
   > I would be happy if you could give it a try with other Emacs versions
   > and let me know the results.

   > The gnus-icalendar.el file needs fairly recent version of Gnus (uses
   > gmm-flet from gmm-utils.el).

Hm I have "Ma Gnus v0.6", is this recent enough or shall I have to
upgrade to 0.7?
   > My current setup is like this:

   > #+BEGIN_SRC emacs-lisp
   > (require 'gmm-utils "~/repos/gnus/lisp/gmm-utils.el") ;; gmm-flet not in emacs
   >                                         ;; proper yet
   > (require 'gnus-icalendar "~/repos/gnus/lisp/gnus-icalendar.el")
   > (gnus-icalendar-setup)
   > (setq gnus-icalendar-org-capture-file "~/org/notes.org")
   > (setq gnus-icalendar-org-capture-headline '("Calendar"))
   > (gnus-icalendar-org-setup)
   > #+END_SRC

I have using so far Ulfs old icalendar package which works with diary,
but I was looking for something a bit more modern than diary.

When I have success I let you know, otherwise I have to wait till June
to try to port it...

Uwe