Dimitri Fontaine wrote:

Paul Matthews <plm@netspace.net.au> writes:

Witting a box@>point function easy. Having a spot of trouble trying to
figure out where and how to graft this into the GiST stuff. Could
someone please point me in the general direction?


You want index support for it, I suppose?

Yes

Without index support (but needed anyway), you implement your code in a
C module then make it visible from SQL.  ...cut... 
COMMENT ON OPERATOR @>(box, point) IS 'box contains point?';

All done but the comment part :-)

Now for adding support for index lookups, you have to see documentation
about OPERATOR CLASS and OPERATOR FAMILY.
Hope this helps, regards,

Thanks overlooked CLASS and FAMILY in my hurry. Hopefully that is where the problem is.

What I am hoping to do is provide a "real" patch to make box@>point available for all. But we can get to that later. A lot of code in pgsql, but not much in the way of comments.