[Bug-apl] Issue with trace

[Blake McBride]

GNU APL:

      ∇test

[1] →⍳0

[2] →⍳0

[3] ∇

      T∆test←1 2 

      test

IBM APL 2:

      ∇TEST

[1] →⍳0

[2] →⍳0

[3] ∇

      T∆TEST←1 2 

      TEST

TEST[1] →2

TEST[2] →3

Thanks.

Blake