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[Kristian Oelgaard <k.b.oelgaard@xxxxxxxxxx>]

Hi,

I've added the following unit test to test/algorithms.py test_elements()

element1 = FiniteElement("CG", triangle, 1)
element2 = FiniteElement("CG", triangle, 1)

v = TestFunction(element1)
u = TrialFunction(element2)

a = u*v*dx
assert (element1, element2) == extract_elements(a)

# OK

assert set([element1]) == extract_unique_elements(a)

# Fails because element1 and element2 are different objects, but I think they
should be treated as identical elements??

Kristian