• To: "[Public XML-DEV]" <xml-dev@l...>
• Subject: FW: UTF-8+names
• From: "Alessandro Triglia" <sandro@m...>
• Date: Mon, 20 Oct 2003 15:56:40 -0400
• Importance: Normal

I wrote:
> 
> Another fact that I think has been overlooked is the following.
> 
> The following fragment of XML (encoded in UTF-8+names but 
> displayed as if it were encoded in UTF-8) contains exactly 18 
> Unicode characters:
> 
> 	<a>one&nbsp;two&lt;</a>
> 
> because   &nbsp;   counts as one character and   &lt;   
> counts as 4 characters.
> 
> The UTF-8+names encoding of this fragment of XML occupies 23 
> bytes.  The UTF-8 encoding occupies 19 bytes.


... and, by the way, the following fragment of XML is different from the one above (although it *looks* the same in this email) and contains 23 Unicode characters instead of 18:

	<a>one&nbsp;two&lt;</a>

The UTF-8 encoding of this fragment of XML occupies 23 bytes.  The UTF-8+names encoding is longer than that because the first ampersand must be encoded as the three ASCII bytes    & & ;   so that the XML entity reference  &nbsp;  is not mistaken for the pseudo-entity  &nbsp;

Alessandro

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