Bug: iCalendar export creates VTODO *and* VEVENT for TODO entries with timestamp [6.36trans (release_6.36.158.g1378)]

[Tassilo Horn <tassilo@member.fsf.org>]

Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

     http://orgmode.org/manual/Feedback.html#Feedback

Your bug report will be posted to the Org-mode mailing list.
------------------------------------------------------------------------

Hi all,

I really like the iCalendar export.  I'm using that to export all my
agenda files when I save them, and import the ics files in KOrganizer,
so that I also have a visual agenda.

But there's one thing which might be a bug.  I have this TODO entry:

*** TODO Einteilung für Nacht der Informatik machen
    <2010-06-08 Tue>

When I export the file containing that entry to iCalendar, what I get is
one VTODO with SUMMARY "Einteilung für Nacht der Informatik machen",
which has no due date.  Additionally, there's one VEVENT on 2010-06-08
with SUMMARY "TODO Einteilung für Nacht der Informatik machen".

If I set that date as DEADLINE, there's only one VTODO appearing on the
deadline date.  But for simple, short tasks that have to be done on a
given date, I prefer not to use DEADLINE, so that it doesn't show up on
previous days in the org agenda.

So IMHO, TODO entries should always become one VTODO each and no VEVENT,
and if there's no DEADLINE in org, then the normal date should be set as
DUE-date.

Bye,
Tassilo

Emacs  : GNU Emacs 24.0.50.1 (x86_64-pc-linux-gnu, GTK+ Version 2.18.9)
 of 2010-06-03 on thinkpad
Package: Org-mode version 6.36trans (release_6.36.158.g1378)

current state:
==============
(setq
 org-log-done 'time
 org-remember-default-headline 'bottom
 org-archive-default-command 'org-archive-set-tag
 org-export-latex-after-initial-vars-hook '(org-beamer-after-initial-vars)
 org-link-frame-setup '((vm . vm-visit-folder) (gnus . org-gnus-no-new-news)
                        (file . find-file-other-window))
 org-special-ctrl-a/e 'reversed
 org-agenda-files '("/home/horn/repos/org")
 org-agenda-include-diary t
 org-blocker-hook '(org-block-todo-from-children-or-siblings-or-parent)
 org-gnus-prefer-web-links t
 org-fontify-whole-heading-line t
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-attach-directory "/home/horn/repos/org/attachments"
 org-special-ctrl-k t
 org-agenda-time-leading-zero t
 org-agenda-restore-windows-after-quit t
 org-export-latex-format-toc-function 'org-export-latex-format-toc-default
 org-export-preprocess-hook '(org-export-blocks-preprocess)
 org-tab-first-hook '(org-hide-block-toggle-maybe)
 org-src-mode-hook '(org-src-mode-configure-edit-buffer)
 org-finalize-agenda-hook '(th-org-agenda-to-appt)
 org-confirm-shell-link-function 'yes-or-no-p
 org-export-first-hook '(org-beamer-initialize-open-trackers)
 org-todo-keywords '((sequence "TODO(t)" "STARTED(s)" "DELEGATED(g)" "IDEA(i)" "|" "DONE(d)"
                      "CANCELLED(c)")
                     )
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-export-latex-packages-alist '(("" "a4wide" nil))
 org-default-notes-file "/home/horn/repos/org/remember.org"
 org-directory "/home/horn/repos/org"
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
                  org-cycle-show-empty-lines org-optimize-window-after-visibility-change)
 org-export-preprocess-before-normalizing-links-hook '(org-remove-file-link-modifiers)
 org-mode-hook '(th-org-mode-init
                 #[nil "\300\301\302\303\304$\207"
                   [org-add-hook change-major-mode-hook org-show-block-all append local] 5]
                 )
 org-refile-targets '((org-agenda-files :maxlevel . 5))
 org-complete-tags-always-offer-all-agenda-tags t
 org-return-follows-link t
 org-confirm-elisp-link-function 'yes-or-no-p
 org-refile-use-outline-path 'file
 org-log-into-drawer "LOGBOOK"
 org-icalendar-categories '(all-tags category)
 org-agenda-mode-hook '(th-org-agenda-mode-init)
 org-enforce-todo-dependencies t
 org-refile-allow-creating-parent-nodes 'confirm
 org-occur-hook '(org-first-headline-recenter)
 org-icalendar-include-body t
 org-agenda-skip-additional-timestamps-same-entry nil
 org-export-preprocess-before-selecting-backend-code-hook '(org-beamer-select-beamer-code)
 org-modules '(org-attach org-protocol org-id org-bbdb org-bibtex org-docview org-gnus org-info
               org-jsinfo org-irc org-w3m)
 org-columns-default-format "%50ITEM %TODO %ALLTAGS %SCHEDULED %DEADLINE"
 outline-minor-mode-hook '(th-outline-minor-mode-init)
 org-remember-templates '(("NORMAL" 110
                           "* %?\n  :PROPERTIES:\n  :created: %U\n  :link: %a\n  :END:\n  %i")
                          ("TODO" 116
                           "* TODO %?\n  :PROPERTIES:\n  :created: %U\n  :link: %a\n  :END:\n  %i")
                          ("IDEA" 105
                           "* IDEA %?\n  :PROPERTIES:\n  :created: %U\n  :link: %a\n  :END:\n  %i")
                          ("BROWSER" 119
                           "* %:description :browser:\n  :PROPERTIES:\n  :created: %U\n  :link: %:link\n  :END:\n  %c\n\n  %i")
                          )
 org-icalendar-include-todo t
 org-remember-backup-directory "~/tmp/"
 org-export-latex-final-hook '(org-beamer-amend-header org-beamer-fix-toc
                               org-beamer-auto-fragile-frames
                               org-beamer-place-default-actions-for-lists)
 org-attach-method 'mv
 )