org-map-entries - wrong use or bug?

[Thorsten Jolitz <tjolitz@gmail.com>]

Hi List, 

I tried out `org-map-entries' with this file

,------------------------------------------------
| * my todos
| ** TODO get things done
| ** TODO take care of things
| ** DONE procrastinate when tasks are unpleasant
| ** DONE delegate really unpleasant tasks
`------------------------------------------------

with an example similar to the one in "Appendix A: Hacking" in the Org
manual

,--------------------------------------
| M: (length (org-map-entries t "\+Done"))
`--------------------------------------

but result is '0' while it should be '2'.

I debugged the function and it seems that the matcher does not match.
These are my todo keywords

,----------------------------------------------------------------------------
| Result: "...\\(TODO\\|NEXT\\|DONE\\|WAITING\\|HOLD\\|CANCELLED\\|PHONE\\)...
`----------------------------------------------------------------------------

and this is the matcher

,----------------------------------------------------------------------
| (and (progn (setq org-cached-props nil) (member "DONE" tags-list)) t)
`----------------------------------------------------------------------

as evaluated on line line 13863 of org.el. 

Wrong use of `org-map-entries' or is there a bug?

-- 
cheers,
Thorsten