t[ nil ]

[Mark Hamburg <mhamburg@...>]

What is the expected behavior if one indexes a table with a nil key? I had
thought it was to throw an exception. In fact I feel I've seen an exception
get thrown but maybe not. Now, however, I seem to be getting back nil.

The manual says that nil is an illegal key.

I certainly prefer the definition that says that t[ nil ] is always equal to
nil for any valid table. I just didn't realize that was the case.

Mark