[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Process failure in XML 1.1 PR: the control characters are back
In direct contradiction to the W3C's advertised policies, the recently released XML 1.1 Proposed Recommedation makes a very substantive change since the candidate recommendation. The candidate recommendation used the following production for char: [2] Char ::= #x9 | #xA | #xD | [#x20-#x7E] | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF] Note that control characters such as bell and vertical tab were not allowed. They could be inserted using character references as indicated in section 4.1. In the new proposed recommendation, however, this is no longer true. C0 controls can now be directly included in XML documents. Its Char production is: [2] Char ::= [#x1-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF] /* any Unicode character, excluding the surrogate blocks, FFFE, and FFFF. */ [2a] RestrictedChar ::= [#x1-#x8] | [#xB-#xC] | [#xE-#x1F] | [#x7F-#x84] | [#x86-#xBF] Despite production 2a, I can find no text in the spec that restricts these characters to being included only via character references and prevents them from being included literally. This is a large change that was the subject of much controversy in the past. Section 7.4.3 of the W3C's process document <http://www.w3.org/2003/06/Process-20030618/tr.html#rec-advance> states: After gathering implementation experience, the Working Group MAY remove features from the technical report that were identified as being "at risk" and request that the Director Call for Review of a Proposed Recommendation. If the Working Group makes other substantive changes to the technical report, the Director MUST return it to the Working Group for further work. If the Working group feels it's important to make this substantive change in the BNF grammar of XML 1.1 at this point in time, then the proposed recommendation should go back to working draft. -- Elliotte Rusty Harold elharo@m... Effective XML (Addison-Wesley, 2003) http://www.cafeconleche.org/books/effectivexml http://www.amazon.com/exec/obidos/ISBN%3D0321150406/ref%3Dnosim/cafeaulaitA
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