ST_Equals(MULTILINE, LINE) fails

[strk]

Are a line and a collection containing that exactly same line "equal" ? I'd say YES, but PostGIS says NO.

[pramsey]

By the same token are

LINESTRING(0 0, 1 1)

and

MULTILINESTRING(0 0, 1 1),EMPTY)

equal?

[strk]

I think they should be equal as well, yes.

[robe]

I agree -- the DEM-9 only cares about occupying the same well defined space and they do therefore they are equal.

[strk]

This bug just stroke again... st_equals(A,B) was returning false while st_symdifference(A,B) was returning empty. Wonder ? Well.. st_equals(st_multi(A), ST_multi(B)) returned true...

We should really fix this before it hurts

[strk]

I'm on it.

[strk]

Paul: do you have a supported way to create your MULTILINESTRING ? I can't, with WKT.

[strk]

I could: st_collect('LINESTRING(0 0, 1 1)'::geometry, 'LINESTRING EMPTY'::geometry);

[strk]

Fixed and regress tested in r8479 for trunk. 1.5 branch isn't affected.

[strk]

Oops, revision is actually r8480 -- sorry for the confusion