Re: custom sorting of agenda items

From: Carsten Dominik <carsten.dominik@gmail.com>
To: Ilya Shlyakhter <ilya_shl@alum.mit.edu>
Cc: Martin Pohlack <mp26@os.inf.tu-dresden.de>,
	emacs-orgmode Mode <emacs-orgmode@gnu.org>,
	Bastien Guerry <bastien.guerry@wikimedia.fr>
Subject: Re: custom sorting of agenda items
Date: Wed, 18 Aug 2010 09:35:01 +0200	[thread overview]
Message-ID: <4ADBC455-8259-4929-8D2C-C4DC63AB03A8@gmail.com> (raw)
In-Reply-To: <AANLkTinRzpKoC46yvpY5C-V72iYLJOybay_tUFCo0yyG@mail.gmail.com>

On Aug 17, 2010, at 6:40 PM, Ilya Shlyakhter wrote:

> Thanks Carsten, org-agenda-before-sorting-filter-function does what  
> I need.
>
> It would be better if it was called with the point already on the
> corresponding headline in the corresponding buffer.
> This would also be faster as you could call it for all entries in one
> buffer at a time, avoiding a separate excursion for each entry.

The problem here is that I would have to insert a call to the hook in
many different places as there are many different functions that
collect entries for the agenda.

>
> It seems that _appending_ text to the agenda line should be safe.  Is
> that correct?

It might be, but there is a possibility that updating the line after
say a TODO state change will not work exactly like you wanted.

- Carsten

>
> thanks,
>
> ilya
>
> On Mon, Aug 16, 2010 at 9:40 AM, Carsten Dominik
> <carsten.dominik@gmail.com> wrote:
>>
>> On Aug 16, 2010, at 2:59 PM, Ilya Shlyakhter wrote:
>>
>>> Thanks!   Would things work faster if there was a user-defined hook
>>> that was called at each agenda entry at the same time
>>> the 'org-hd-marker property gets stored, so it could store any other
>>> things it needs from the entry as text properties for later
>>> use by user-defined entry sorting routine?
>>
>> Please pull and take a look at the new variable
>> `org-agenda-before-sorting-filter-function'.
>>
>> Martin, I think you could use this variable also for your
>> "filtering" application.
>>
>> - Carsten
>>
>>>
>>> ilya
>>>
>>> On Mon, Aug 16, 2010 at 8:54 AM, Carsten Dominik
>>> <carsten.dominik@gmail.com> wrote:
>>>>
>>>> On Aug 5, 2010, at 1:01 AM, Ilya Shlyakhter wrote:
>>>>
>>>>> When giving a user-defined function for org-agenda-cmp-user- 
>>>>> defined,
>>>>> the function gets two agenda entries.   Is there a way from an  
>>>>> agenda
>>>>> entry
>>>>> to get to the original org entry?
>>>>
>>>> Yes, the marker that points to the original entry is stored in text
>>>> properties.
>>>> You can take it and then go to the entry, for example with
>>>>
>>>> (org-with-point-at (org-get-at-bol 'org-hd-marker)
>>>>    ;; do here what you need to do at the location of the entry
>>>>    )
>>>>
>>>> You could do this in org-finalize-agenda-hook for all entries, for
>>>> example.
>>>> Might slow things down, of cause.
>>>>
>>>> HTH
>>>>
>>>> - Carsten
>>>>
>>>>>
>>>>> Best would be if, besides a user-defined sort function, you  
>>>>> could also
>>>>> provide
>>>>> a function that takes the org entry and the agenda item (i.e. is  
>>>>> run
>>>>> with
>>>>> point
>>>>> on the org entry and is passed the agenda item), and can then  
>>>>> store
>>>>> anything
>>>>> it wants about the org entry as text properties on the agenda  
>>>>> item.
>>>>> The companion user-defined sorting function could then use these  
>>>>> stored
>>>>> text properties for ordering the agenda items.   Could you add  
>>>>> such a
>>>>> hook?
>>>>>
>>>>> thanks,
>>>>>
>>>>> ilya
>>>>>
>>>>> On Wed, Aug 4, 2010 at 6:51 PM, Bastien <bastien.guerry@wikimedia.fr 
>>>>> >
>>>>> wrote:
>>>>>>
>>>>>> Hi Ilya,
>>>>>>
>>>>>> Ilya Shlyakhter <ilya_shl@alum.mit.edu> writes:
>>>>>>
>>>>>>> I'd like to sort agenda entries in a custom agenda view by the  
>>>>>>> value
>>>>>>> of a text property that I put on the headlines.
>>>>>>> Is there a way to do that?
>>>>>>
>>>>>> Well, no.
>>>>>>
>>>>>> Maybe playing around with org-map-entries could yield some  
>>>>>> result.
>>>>>>
>>>>>> --
>>>>>>  Bastien
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Emacs-orgmode mailing list
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>>>>> Emacs-orgmode@gnu.org
>>>>> http://lists.gnu.org/mailman/listinfo/emacs-orgmode
>>>>
>>>> - Carsten
>>>>
>>>>
>>>>
>>>>
>>
>> - Carsten
>>
>>
>>
>>

- Carsten