- From: Greg Hunt <greg@f...>
- To: Michael Kay <mike@s...>
- Date: Fri, 19 Mar 2010 09:55:02 +1100
Is a substitution character (x'1a' in many single byte character sets or 65533 in UTF-8) a legal character? I have a case where x'1a' appears not be to legal in a document with an encoding specified as ISO-8859-1.
On Fri, Mar 19, 2010 at 6:01 AM, Michael Kay <mike@s...> wrote:
It's not well-formed.
From the XML
1.0 spec [1]:
"It is a fatal error if an XML entity is determined
(via default, encoding declaration, or higher-level protocol) to be in a certain
encoding but contains byte sequences that are not legal in that
encoding."
Unless of course there is a "higher-level protocol" that tells
you it's really a different encoding. (The term higher-level protocol is not
really defined. I think they had in mind the media-type from the HTTP
content header. In terms of the protocol stack, that of course is a lower-level
protocol. But it's sufficiently woolly that a phone call from the sender to say
"Oops, I meant EBCDIC" would be enough to make the document
well-formed.
Regards,
Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay
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