Carsten Dominik (carsten.domi...@gmail.com) wrote:
> On Aug 22, 2009, at 2:47 PM, Matt Lundin wrote:
> >Hi Memnon
> >
> >Memnon Anon wrote:
> >>However, there is one thing I am not able to figure out:
> >>
> >>Using skipping, it is easy to limit my daily agenda to certain
> >>tags like:
> >>(org-agenda-skip-function '(org-agenda-skip-entry-if 'notregexp
> >>":STUDIUM:"))))
> >>
> >>Is it possible to do the same with Categories?
> >>I think there must be a way, but all my attempts did not work :(.
> >
> >I believe this is not possible with the built in org agenda skip
> >functions, since they search only the text within the subtree and do
> >not recognize inherited tags and properties.
> >
> >However, I suspect that one could build a skip function using
> >org-entry-properties that would accomplish this goal.
> 
> Much faster in this special case will be to use `org-get-category'
> instead of accessing all properties of the entry with
> org-entry-properties.

I wrote the following to accomplish this, but it would be much nicer
if you could use (org-agenda-skip-entry-if 'category "mycategory").

(defun org-agenda-skip-select-category-function (category-to-select)
  "Creates a function suitable for use with
`org-agenda-skip-function' which skips all items except for those
in the provided category."
  `(lambda ()
    (if (equal (org-get-category) ,category-to-select)
        nil ;; don't skip
      ;; The invisible-ok param below seems to be needed
      ;; in order to avoid infinite loops:
      (org-end-of-subtree t))))


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