On Fri, 24 Jun 2005, I wrote:
> Anyway, as I said before, the are also other reasons for wanting to
> evaluate "if the sender is the empty string",
I forgot the obvious one, which is implementing exactly what you are
preaching, namely: "If the sender is the empty string, then accept",
which can be usefully placed before all other tests if you are so
minded.
--
Philip Hazel University of Cambridge Computing Service,
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