Question for the list...

[Chris Moller]

    I've just discovered that you get a syntax error if
      you try to localise a system variable in a named lambda:
    
> lll←{⍳⍵⊣⎕io←0;⎕io}
>       lll 8
>         SYNTAX ERROR
>         lll[1]  λ←⍳⍵⊣⎕IO←0;⎕IO
>              ^          ^
>     
    Is it supposed to work that way?  Or is that a bug?