From: jon@hackcraft.net
Date: Thu Nov 13 2003 - 12:39:49 EST
The source and the sink are higher level entities with their
> own higher level protocols.
Yes, and they would be examples of the first and second case I gave in my first
mail on this thread.
The channel between source and sink, which
> is the Unicode level and below, should be transparent to PUA characters,
> indeed to all characters apart from defined transformations. That surely
> is the point of the PUA. If the channel starts messing around with the
> characters sent through it, that is what is non-conformant.
Such applications would match the third case.
The fourth case can be used to build any of the others.
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