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<address@hidden>
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.
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