Hello!

I just looked at
http://lumiere.ens.fr/~guerry/emacs-orgmode-gnu-hackers-meeting-2011.html and
wanted to express my excitement about the suggested "tags grouping"-future
improvement!

Just out of curiosity, what is the intended functionality? Should groups be
able to be "groups of groups"? Is there any thought of a kind of n-depth
search through these tags? i.e. given the following tags:

  #+TAGS: contexts: home work town.
  #+TAGS: work: project_A project_B.

would a search for the tag "contexts" return the headings with that tag,
return the headings of all the tags in the contexts group or would it
return all the tags at n depths?

This gives reason for some interesting thoughts i.m.o

Regards
Gustav