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From: Carsten Dominik <carsten.dominik@gmail.com>
To: Samuel Wales <samologist@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: Re: user-defined agenda sorting
Date: Fri, 19 Jun 2009 17:39:58 +0200	[thread overview]
Message-ID: <9A9BB2D2-834D-45DE-B106-55617720EB26@gmail.com> (raw)
In-Reply-To: <20524da70906160213k55ebc984t92abc4abe3a2fc35@mail.gmail.com>


On Jun 16, 2009, at 11:13 AM, Samuel Wales wrote:

> If my skills at cargo-cult programming can summon the air force, then
> (get-text-property 1 'priority a/b] will work.  But I'm not sure if
> there are functions for parsing tags etc.  Testing seems difficult as
> cut and paste of headline strings seems to not include properties.
>
> Thanks.
>
> On Tue, Jun 16, 2009 at 01:57, Samuel Wales<samologist@gmail.com>  
> wrote:
>> I have a sort comparison function for the outline, which
>> returns a number.  This works well.
>>
>> The documentation for user-defined agenda sorting says "This
>> function must receive two arguments, agenda entry a and b."
>> I am not sure what a and b are, strings?
>>
>> My function gets priorities, tags, and todo kw assuming point is on a
>> headline.  It uses org functions to get those.  The org code for
>> agenda sorting uses text properties.
>>
>> How to adapt my function to get the following information: priorities
>> as [?A..?C], inherited and local tags as a list, and todo kw as a
>> string?
>>
>> Is there a place where how to parse a and b is documented?


Not really.  `a' and `b' are the strings that are inserted into the  
agenda,
each line in the agenda may be `a' or `b'.
The strings are loaded with text properties carrying all kinds of  
information.
You can look at these properties by pressing `C-u C-x =' on a line in  
the agenda.
If the information you want is not there, you can take the
org-morker and org-hd-marker properties to visit the original entries  
and
get the needed info from there.  And example for this is in `org-cmp- 
todo-state'
which returns to the original buffer in order to get the buffer-local
list of TODO states from there.

All the org-cmp-.... functions contain examples on how the text  
properties
are used from comparing entries.

The reason why these are in different text properties is historic,  
because I
added this stuff one by one, over time.  Looking back, a single  
property list
would have been better for tasks like the one you are working on.

HTH

- Carsten

>>
>> Thanks.
>>
>> --
>> Myalgic encephalomyelitis denialism is causing death and severe  
>> suffering,
>> worse than MS.  Conflicts of interest are destroying research.  / 
>> You/ can
>> get the disease at any time permanently.  Do science and justice  
>> matter to
>> you?  http://www.meactionuk.org.uk/What_Is_ME_What_Is_CFS.htm
>>
>
>
>
> -- 
> Myalgic encephalomyelitis denialism is causing death and severe  
> suffering,
> worse than MS.  Conflicts of interest are destroying research.  / 
> You/ can
> get the disease at any time permanently.  Do science and justice  
> matter to
> you?  http://www.meactionuk.org.uk/What_Is_ME_What_Is_CFS.htm
>
>
> _______________________________________________
> Emacs-orgmode mailing list
> Remember: use `Reply All' to send replies to the list.
> Emacs-orgmode@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-orgmode

  reply	other threads:[~2009-06-19 16:23 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-16  8:57 user-defined agenda sorting Samuel Wales
2009-06-16  9:13 ` Samuel Wales
2009-06-19 15:39   ` Carsten Dominik [this message]
2009-06-19 20:00     ` Samuel Wales
2009-06-20  4:12       ` Carsten Dominik

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