'' ''} i.2 2
|length error
|   ''    ''}i.2 2

Should it be an error?  I would expect it not to be, because:

   (,27) (,<1 0)} i.2 2
 0 1
27 3
   (27 28) (1 0;0 1)} i.2 2
 0 28
27  3

So the original snippet is just the degenerate case where no indices are supplied. But I want to ensure I am not missing anything obvious.
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