Re: org-class and headers

[Joseph Le Roux <joseph.le.roux@gmail.com>]

Rasmus <rasmus@gmx.us> writes:

> Joseph Le Roux <joseph.le.roux@gmail.com> writes:
>
>> Eric S Fraga <e.fraga@ucl.ac.uk> writes:
>>
>>> On Tuesday, 21 Oct 2014 at 16:47, Joseph Le Roux wrote:
>>>> Rasmus <rasmus@gmx.us> writes:
>>>
>>> [...]
>>>
>>>>> Will `org-clone-subtree-with-time-shift' do what you want?
>>>>>
>>>>
>>>> Thanks for the pointer, it could be very handy in my use-case, but this
>>>> function copies the org-class as is for all clones. I would like to
>>>
>>> The idea is to use the clone function and not the org-class
>>> expression.  Combining the two simply confuses things!
>>>
>>> What I do every start of term is define an entry for each lecture slot
>>> in a week including the actual time information, lecture theatre,
>>> etc.  I then clone each individual entry using +1w for the number of
>>> weeks in the term.  I remove any subtrees generated that correspond to
>>> lectures that do not actually exist, e.g. they fall on a holiday or
>>> during our study week.
>>>
>>> Later, if an individual lecture gets cancelled, I simply remove the
>>> corresponding subtree as I do for holidays etc.
>>
>> Thank you Eric, I'll follow the advice. As Rasmus showed,
>> 'org-clone-subtree-with-time-shift' works with a timestamp, but it does
>> not with (the result of) an org-class call. Ideally, what I would like
>> to do is to specify a set of classes using org-class syntax and, as a
>> result, get a set of headers. 'org-class' is a powerful tool, but just
>> not powerful enough yet...
>
> I have used to use classes in the past, but I now use a setup close to
> Eric's.  One reasons is for good org-caldav support.  Here's how I
> schedule my Spanish classes this term:
>

Yes you're right. org-class is not practical for caldav export. That's
yet another issue I could have raised.

> (with-temp-buffer
>   (insert "* Spanish course
> ** Spanish class
> <2014-10-07 Tue 18:30-20:30>")
>   (goto-line 2)
>   (org-clone-subtree-with-time-shift 8 "+1w")
>   (save-excursion (insert "** Spanish class
> <2014-10-09 Thu 18:30-20:30>\n"))
>   (org-clone-subtree-with-time-shift 7 "+1w")
>   (goto-char (point-min)) (org-sort-entries nil ?t)
>   ;; like C-c ^ t
> (buffer-substring-no-properties (point-min) (point-max)))
>
> Of course in practice, this is easier to "interactively", but it's
> hard to describe briefly.

I see.

>
> Is there anything you miss about `org-clone-subtree-with-time-shift'¹?
> Would you be happy if it asked if you want to skip some weeks
> initially?  Or do you not like the extra space it takes?
>

Yes I would like to be able to directly specify the skipped weeks. I've
tried to hack a function for that but my elisp skills are rather
limited.

Joseph

> —Rasmus
>
> Footnotes: 
> ¹   note the "`" in the beginning, not "'"

noted


-- 
Joseph Le Roux

RCLN, LIPN, Université Paris 13
Tel: +33 (0) 1 49 40 40 81
Fax: +33 (0) 1 48 26 51 12
URL: http://lipn.univ-paris13.fr/~leroux