Re: icalendar: exporting times of day specified in heading?

From: Carsten Dominik <carsten.dominik@gmail.com>
To: Stephen Eglen <S.J.Eglen@damtp.cam.ac.uk>
Cc: emacs-orgmode@gnu.org
Subject: Re: icalendar: exporting times of day specified in heading?
Date: Thu, 28 Jan 2010 15:17:37 +0100	[thread overview]
Message-ID: <BCE4A64F-A9E8-406A-8E30-CF8BF2202C6B@gmail.com> (raw)
In-Reply-To: <15490.1263652716@cpc1-cmbg14-2-0-cust6.5-4.cable.virginmedia.com>

Hi Stephen,

while it might be possible to do what you ask for, I think it is error- 
prone because people might accidently have something in the headline  
which looks like a time.  I don't mind so much if Org's agenda  
stumbles over this, but I don't want to produce incorrect icalendar  
files.

Also, this icalendar export function is programmed in a messy way, and  
I don't see a quick way to fix this.

If you can make me a patch, I will take it.

- Carsten

On Jan 16, 2010, at 3:38 PM, Stephen Eglen wrote:

> Hi,
>
> I often use org-agenda-diary-entry to make simple entries into
> an agenda.org file.  I see that the agenda is clever enough to  
> recognise
> if a time range has been typed into the heading.  However, this time
> range is not exported by the icalendar code.
>
> Here's a simple example, independent of org-agenda-diary-entry,  
> although
> in reality, example 2 would be the type of entry I normally make.
>
> if I have a test.org file containing:
> ----------------------------------------------------------------------
> * <2010-01-16 Sat 08:00-08:30> example 1
>
> * <2010-01-16 Sat> example 2 09:00-09:30
> ----------------------------------------------------------------------
>
> then when I view the agenda I see:
>
> Saturday   16 January 2010
>  test:        8:00- 8:30 example 1
>               8:00...... ----------------
>  test:        9:00- 9:30  example 2
>              10:00...... ----------------
>
> [There's an extra space before 'example 2', which I'm not sure about.]
>
> So far, so good - the agenda has parsed 09:00-09:30 from the headline.
> But now if I make an ics file (e.g. by 'C-c C-e i' in test.org) the
> start and end time of the event are not recognised.  Here's a relevant
> snippet from test.ics:
>
> BEGIN:VCALENDAR
> ...
> DTSTART:20100116T080000
> DTEND:20100116T083000
> SUMMARY: example 1
> CATEGORIES:test
> ...
> DTSTART;VALUE=DATE:20100116
> DTEND;VALUE=DATE:20100117
> SUMMARY: example 2 09:00-09:30
>
> What I *think* I'd like is that for the 2nd calendar entry is
>
> DTSTART:20100116T0900
> DTEND:20100116T0930
>
> Is that sensible/possible?  Alternatively, how about
> org-agenda-diary-entry parsing the time specification and writing the
> date and time within angle brackets?
>
> (org-version)
> "Org-mode version 6.33trans (release_6.33f.22.gcb8ce.dirty)"
>
> Thanks, Stephen
>
>
>
>
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- Carsten