[Bug-apl] Bug when using negative arguments to ]BOXING

[Elias Mårtenson]

I get a DOMAIN ERROR when trying to use the new ]BOXING feature. Here's a
transcript:

*      ]BOXING ¯29*
*      ⍳10*
DOMAIN ERROR+
      ⍳10
      ^
*      )more*
A ⎕CR B with invalid A < 0

Regards,
Elias