Overlap with empty range incorrectly returns True

[gson1703]

The overlap() method is documented as "Returns True if both ranges share any points."
The following example incorrectly prints True even though the ranges clearly do not share any points.

from spans import intrange
print intrange(20, 30).overlap(intrange(10, 10))

[runfalk]

This is indeed a bug. PostgreSQL does:

 # SELECT 'empty'::int4range && 'empty'::int4range;
 ?column? 
----------
 f
(1 row)

or

# SELECT int4range(1, 10, '[)') && 'empty'::int4range;
 ?column? 
----------
 f
(1 row)

[runfalk]

I've made a fix for this. Please test it and report back if it fixes your issue. The only changes file is types.py.

[gson1703]

The fix looks good to me. Thanks for the quick response!

[runfalk]

I'll release this fix as part of the 1.0 release. It'll probably be another week or two before that in case any other issues arise.

[runfalk]

1.0.0 is now released.