Re: Splitting and encoding of local-parts: some thoughts

   It doesn't introduce them, but it will copy them from the input to
   the output, if they exist in the input.  The first thing the Punycode
   encoder does is copy all ASCII characters appearing in the input
   directly to the output.

Indeed, so:

	<non-ASCII-char><dot><non-ASCII-char><dot><non-ASCII-char>

encodes to

	<dot><dot><delimiter><bunch-of-variable-length-integer-encoded-stuff>

Note that the input didn't contain any consecutive dots, but the
output did.

       -roy