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Re: [xml-dev] [Summary] Why is Encoding Metadata (e.g. encoding="UTF-8")put Inside the XML Document?

  Hello Philippe,

On 9/21/07, Philippe Poulard wrote:
> Consider this declaration :
> <?kzy rapbqvat="EBG-13"?>
> The deecoded form of this declaration is :
> <?xml encoding="ROT-13"?>
> I can get it only if I test "ROT-13" on it ; althouh it is not strictly
> spoken an encoding, a parser that would support "ROT-13" would be able
> to decode it only if it test it or if it recognize the magic ASCII
> string "<?kzy" or whatever is the "guess" heuristic.

I think you found an interesting example of ambiguous encoding,
falling in the category of "Character encodings such as UTF-7 that
make overloaded usage of ASCII-valued bytes" which "may fail to be
reliably detected." as mentioned in

In this example, without external information, there is no way IMHO to
know for sure with limited input whether this is a ROT-13 encoding, or
an UTF-8 document starting with the "kzy" processing instruction.

Best Regards,

Eric Bréchemier

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