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Is it a well-formedness error to use a character not in theencoding spec

• From: "Costello, Roger L." <costello@mitre.org>
• To: "xml-dev@lists.xml.org" <xml-dev@lists.xml.org>
• Date: Thu, 18 Mar 2010 14:13:00 -0400

Hi Folks,

Consider this simple XML document. The XML declaration specifies an encoding of US-ASCII. The document contains an œ ligature, which is not a US-ASCII character:

<?xml version="1.0" encoding="US-ASCII"?>
<Family-Name>Lecœur</Family-Name>

Should I get an error when I check this document for well-formedness? I checked and didn't get an error. I was surprised, as I thought that this would be a well-formedness error.

/Roger

• Follow-Ups:
  • RE: Is it a well-formedness error to use a character not in theencoding specified by the XML declaration?
    • From: "Costello, Roger L." <costello@mitre.org>
  • Re: Is it a well-formedness error to use a character not in theencoding specified by the XML declaration?
    • From: Michael Glavassevich <mrglavas@ca.ibm.com>