[Bug-apl] Disclose and enlist of empty arrays

[Kacper Gutowski]

Hi,
Thanks for the division fixes.

I'm not sure if the below are outright bugs,
but I find these rather unexpected:

      A←'abc' 'def'
      ≡A[⍳1]
2
      ≡⊃A[⍳1]
1
      ≡⊃A[⍳0]         ⍝ I think it should be 1 too
2
      ≡∊A[⍳1]
1
      ≡∊A[⍳0]         ⍝ result of ∊ should always be simple
2
      'da' ⍋ ⊃A[⍳0]   ⍝ practical problem it causes
DOMAIN ERROR
      'da'⍋⊃A[⍳0]
      ^    ^

What's interesting, by the way, is that 10⎕CR and 2⎕TF show the
expected values of A[⍳0] and ⊃A[⍳0] but they don't match (≡)
the actual ones.

-k