See:
XML Blueberry Requirements
W3C Working Draft 20 June 2001
http://www.w3.org/TR/xml-blueberry-req
| 1. Introduction
|
| The W3C's XML 1.0 Recommendation [XML] was first issued in 1998, and
| despite the issuance of many errata culminating in a Second Edition of
| 2001, has remained (by intention) unchanged with respect to what is
| well-formed XML and what is not. This stability has been extremely
| useful for interoperability. However, the Unicode Standard [Unicode] on
| which XML 1.0 relies has not remained static, evolving from version 2.0
| to version 3.1. Characters present in Unicode 3.1 but not in Unicode 2.0
| may be used in XML character data, but are not allowed in XML names such
| as element type names, attribute names, processing instruction targets,
| and so on. In addition, some characters that should have been permitted
| in XML names were not, due to oversights and inconsistencies in Unicode
| 2.0.
|
| As a result, fully native-language XML markup is not possible in at
| least the following languages: Amharic, Burmese, Canadian aboriginal
| languages, Cantonese (Bopomofo script), Cherokee, Dhivehi, Khmer,
| Mongolian (traditional script), Oromo, Syriac, Tigre, Yi. In addition,
| Chinese, Japanese, Korean (Hangul script), and Vietnamese can make use
| of only a limited subset of their complete character repertoires.
|
| In addition, XML 1.0 attempts to adapt to the line-end conventions of
| various modern operating systems, but discriminates against the
| convention used on IBM and IBM-compatible mainframes. XML 1.0 documents
| generated on mainframes must either violate the local line-end
| conventions, or employ otherwise unnecessary translation phases before
| and after XML parsing and generation.
|
| A new XML version, rather than a set of errata to XML 1.0, is being
| created because the change affects the definition of well-formed
| documents: XML 1.0 processors must continue to reject documents that
| contain new characters in XML names or new line-end conventions. It is
| presumed that the distinction between XML 1.0 and XML Blueberry will be
| indicated by the XML declaration.
|
| [...]
Misha
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