- From: Martin Duerst <duerst@it.aoyama.ac.jp>
- Date: Tue, 06 Nov 2007 18:38:09 +0900
- To: Richard Tobin <richard@inf.ed.ac.uk>, Konrad Lanz <Konrad.Lanz@iaik.tugraz.at>
- Cc: Richard Tobin <richard@inf.ed.ac.uk>, "Grosso, Paul" <pgrosso@ptc.com>, Richard Ishida <ishida@w3.org>, public-i18n-core@w3.org, public-xml-core-wg@w3.org, public-iri@w3.org
I think one additional argument for not including '[' and ']' in escaping when going from Legacy Extended IRIs to IRIs is that for all the other characters, this can be done independent of syntax details, but for '[' and ']', it would have to be done in a context-dependent manner, because clearly these characters must not be escaped when they serve as delimiters for IPv6 addresses. Regards, Martin. At 18:10 07/11/06, Richard Tobin wrote: >> >> If LEIRIs said that square brackets in the fragment get %-escaped >> >> by the processor, and we changed the specs to refer to LEIRIs, that >> >> would be a normative change. > >> That depends on the perspective ... (RFC 2732 Grammar vs. Prose) > >But we're not talking about RFC 2732, we're talking about XML 1.0, >XInclude, the XPointer draft and so on. And they don't rely on 2732 >for the list of characters, even if they refer to it. For example, >the XPointer draft http://www.w3.org/TR/2001/CR-xptr-20010911/#escaping >says: > > The disallowed characters include all non-ASCII characters, plus the > excluded characters listed in Section 2.4 of [IETF RFC 2396], except > for the number sign (#) and percent sign (%) and the square bracket > characters re-allowed in [IETF RFC 2732]. Disallowed characters are > escaped as follows: [...] > >That says that square brackets are not in the set of disallowed >characters, regardless of what 2732 itself says. > >Similarly, XML 1.0 http://www.w3.org/TR/REC-xml/#sec-external-ent says: > > The characters to be escaped are the control characters #x0 to #x1F > and #x7F (most of which cannot appear in XML), space #x20, the > delimiters '<' #x3C, '>' #x3E and '"' #x22, the unwise characters '{' > #x7B, '}' #x7D, '|' #x7C, '\' #x5C, '^' #x5E and '`' #x60, as well as > all characters above #x7F. > >and square brackets are not in that list. Even if 2732 is ambiguous, >these specs are not. > >-- Richard #-#-# Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University #-#-# http://www.sw.it.aoyama.ac.jp mailto:duerst@it.aoyama.ac.jp
Received on Tuesday, 6 November 2007 09:42:39 UTC