Complement(FiniteSet, FiniteSet)

[Gaurav Dhingra]

Hi all
Currently we have
```
>>> m,n = symbols('m n')
>>> Finite(1,2,3) - FiniteSet(m,n)
FiniteSet(1, 2, 3) # why this ? Why is it not returned unevaluated ?
```

Gaurav

[AMiT Kumar]

That's a bug.

The behavior of FiniteSet while having symbolic elements into it

was recently changed here: https://github.com/sympy/sympy/pull/9540

So, the new behavior, is yet not implemented for all other operations,

that's probably one of the reasons for this.

AMiT Kumar