I use the following code provided in the tutorial to convert a product of epsilon tensors to generalised delta functions, and the code works for \epsilon*{a b c}\epsilon*{a b c} but it fails when I tried to use \epsilon*{a b c} \epsilon*{a d e}. It just outputs the same input without evaluating. Here are the inputs

```
{a,b,c,d}::Indices.
{a,b,c,d}::Integer(1..3).
\delta{#}::KroneckerDelta;
\epsilon_{a b c}::EpsilonTensor(delta=\delta);
ex:=\epsilon_{a b c} \epsilon_{a d e};
epsilon_to_delta(_);
expand_delta(_);`
```

The output for the last command above is:

```
\epsilon_{abc}\epsilon_{ade}
```

without converting to the expect product of two \delta's.

This problem persists for all \epsilon products, for example:

```
{m,n,p,q,r,s,a,b,c,d}::Indices;
{m,n,p,q,r,s,a,b,c,d}::Integer(1..6).
\delta{#}::KroneckerDelta;
\epsilon_{m n p q r s}::EpsilonTensor(delta=\delta);
\xi_{a b}::AntiSymmetric;
ex:=\epsilon_{l q r s a b} \xi_{a b} \epsilon_{p u v l c d}\xi_{c d};
epsilon_to_delta(_);
```

The output for the last line above is the same as the Latex expression for "ex", namely

```
\epsilon_{l q r s a b} \xi_{a b} \epsilon_{p u v l c d}\xi_{c d}
```

I am not sure whether this is a bug ? I am using a terminal windows on MacOS Mojave 10.14.6. I tried to attach a screenshot showing the problem here but there is no option for me to attach a screenshot. I hope my description is not too confusing. Thanks in advance for any help possible.