Legible generators

[Roger-luo]

Sometimes, the input of a function can be generators, while the function itself will produce a lambda:

I took this example from Yao

I'm expecting the following to give

kron(X for _ in 1:5)

n -> kron(n, X for _ in 1:5)

but I got

(n -> kron(n, Base.Generator{UnitRange{Int64},getfield(Main, Symbol("##3#4"))}(getfield(Main, Symbol("##3#4"))(), 1:5)))

I'm not sure if this requires some upstream change, but it would be nice to support it.

[Roger-luo]

I investigate this issue a bit, it seems the problem is we don't know the signature (including the variable name) of the given function which is actually #10