Re: RE: Roundtripping in Unicode

From: John Cowan (
Date: Tue Dec 14 2004 - 07:54:53 CST

  • Next message: Lars Kristan: "RE: Roundtripping in Unicode"

    Doug Ewell scripsit:

    > "When faced with [an] ill-formed code unit sequence while transforming
    > or interpreting text, a conformant process must treat the first code
    > unit... as an illegally terminated code unit sequence -- for example, by
    > signaling an error, filtering the code unit out, or representing the
    > code unit with a marker such as U+FFFD REPLACEMENT CHARACTER."

    Plan 9, the original all-UTF-8 environment (it was translated
    in a single day from Latin-1 to UTF-8), represents ill-formed code unit
    sequences with the otherwise useless U+0080, on the grounds that an
    ill-formed code is semantically different from an untranslatable
    character, which is the purpose of U+FFFD.

    LEAR: Dost thou call me fool, boy?      John Cowan
    FOOL: All thy other titles    
                 thou hast given away:
          That thou wast born with.

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