Tag Filtering Logic (AND/OR/Combo)

[Gabriel Burt <gabriel burt gmail com>]

The following is a comment on bug
http://bugzilla.gnome.org/show_bug.cgi?id=139796 I posted a while ago. I
would like to see this issue discussed more. I'd of course like to
implement what I've outlined below. :)

My instinct was to OR the selected tags within a category, then AND them
with the OR'd selected tags of other categories.

For exmaple, you have
Places
 - Kansas
 - New York
 - Illinois

People
 - Me
 - Larry
 - Luis

You could see pictures of (Larry or me) in (New York or Illinois).

I understand users could intend (Larry and me) in (New York) ... but allowing
that and the above example would entail significant changes to how these filters
are selected.

The first approach makes more sense to me, because you can OR tags of any type,
but ANDing will often not make sense (Places, Photographer, etc).

The current approach of ORing all selected tags across all categories seems the
worst of the options, since it has no ability to show pictures that match two or
more tags.

Perhaps a long-term solution that could provide much greater flexiblity would be
a text-entry where the user can write out what they want to see, as in "Pictures
of Larry and Gabriel taken by Luis in New York or Illinois but not Chicago."
With content-assisted popups and graphical goodies, of course. :)  Add speach
recognition..and that's enough for one night.

Thanks,

Gabriel Burt