John -
I was thinking you were crazy until I read the spec in detail and I was suprised at what I found. For those like me who weren't following along well at home, the specification for "character references" (such as "Ӓ" and "ꯍ") appears to indicate that "" is legal (at least lexically). On the other hand it is accompanied by a constraint that restricts the resulting values to those that would be expected to map to textual characters only: #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF] So John is vindicated and I am abashed at my lack of knowledge once again. ;) On the other hand, I wonder how many parsers would permit ""? Stuart ----- Original Message ----- From: "Jim Redman" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, March 01, 2002 12:14 AM Subject: Re: DO NOT REPLY [Bug 6763] - XMLWriter doesn't escape enough characters > From a position of complete ignorance, and without reading the spec. can > someone clarify for me what this means? > > The part of the spec quoted here says that you can't used binary chars, > however "" seems to meet the requirement of the spec in that it > matches "the production for Char". No the spec says that the result of turning the escaped character back to a Unicode character must match the production Char. This control character does not match that prduction. There is an excellent annotated spec here http://www.xml.com/axml/testaxml.htm > > Regardless of whether xmlrpc should be doing the escaping, it seems to me > that I should be able to send a String that would be invalid XML by > escaping each character - the resulting string seems to be valid. This is > philosphically the same as sending new line characters as "\\n" in human > readable strings. > > Is this the case or is it required that anything that may have a non-Char > in it be base64 encoded? If you want to send control characters (other than /r /n /t - and an XML parser will mangle the /r and /n) then you need to use Base64 and agree a Unicode encoding between the end points. John Wilson The Wilson Partnership http://www.wilson.co.uk
