Clarification on item on Todo List

Tristan Wright <twright09@earlham.edu> writes:

I am interested in this item on the list and its exact meaning:
(Under "Data Types")
- Fix data types where equality comparison is not intuitive, e.g. box

Can you elaborate on this item, I particularly fail to see what is non-intuitive about box comparisons (and I suppose other types where equalities are non-intuitive).

box_eq compares the boxes' areas. The operator that most people would
consider to be "equality" is box_same (~=). The reason this is on the
TODO is that nobody's figured out a way to swap the two operator names
without breaking applications.

regards, tom lane