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At 7:30 AM -0400 10/21/02, <david@megginson.com> wrote:
>the 1.0 REC) deserves praise. Assuming that the Ethiopian XML people
>include an XML declaration, their XML 1.1 documents will at least
>trigger obvious and properly documented failures in 1.0-only
>processors (along the lines of "Fatal: XML version 1.1 not supported")
>rather than intermittent, hard-to-track-down bugs and crashes.
>
>
Perhpas, but it's far from certain. The XML 1.0 spec states:
The version number "1.0" should be used to indicate conformance to
this version of this specification; it is an error for a document to
use the value "1.0" if it does not conform to this version of this
specification. It is the intent of the XML working group to give
later versions of this specification numbers other than "1.0", but
this intent does not indicate a commitment to produce any future
versions of XML, nor if any are produced, to use any particular
numbering scheme. Since future versions are not ruled out, this
construct is provided as a means to allow the possibility of
automatic version recognition, should it become necessary. Processors
may signal an error if they receive documents labeled with versions
they do not support.
Notice the last sentence especially. 1.0 processors may *but do not
have to* signal an error when they encounter an XML 1.1 document. I
suspect in practice some do and some don't. Anyone know if the
conformance tests look at this?
--
+-----------------------+------------------------+-------------------+
| Elliotte Rusty Harold | elharo@metalab.unc.edu | Writer/Programmer |
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| XML in a Nutshell, 2nd Edition (O'Reilly, 2002) |
| http://www.cafeconleche.org/books/xian2/ |
| http://www.amazon.com/exec/obidos/ISBN%3D0596002920/cafeaulaitA/ |
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