Re: [xml-dev] Proposed requirements on solutions that convert XML-illegal characters into XML
On Thu, Apr 27, 2017 at 4:52 AM, Mukul Gandhi <[email protected]> wrote:
Before agreeing to Mr. Timothy's post, I forgot to brush up what is really meant by the XSD type xs:string. If we look at xs:string definition at, https://www.w3.org/TR/xmlschema-2/#string it says"The string datatype represents character strings in XML. The ·value space· of string is the set of finite-length sequences of characters (as defined in [XML 1.0 (Second Edition)]) that ·match· the Char production from [XML 1.0 (Second Edition)]."While writing +1, I suspected that XSD's xs:string mirrors Java's String data type. But actually, xs:string takes its value space from XML 1.0 (Second Edition).
So the 'string representation' of NUL is that group of characters "\u0000" and can be included in an XML string.
Character Range
[2] Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF] /* any Unicode character, excluding the surrogate blocks, FFFE, and FFFF. */
So, what am I missing? There is a defined string representation for every Unicode character, even ones such as NUL, ACK, etc. not meant for display.