[Expat-bugs] [ expat-Bugs-695407 ] Reserved prefixes and namespace names

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Bugs item #695407, was opened at 2003-02-28 20:46
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=110127&aid=695407&group_id=10127

Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Karl Waclawek (kwaclaw)
Assigned to: Karl Waclawek (kwaclaw)
Summary: Reserved prefixes and namespace names

Initial Comment:
Expat does not reject illegal declarations for reserved 
prefixes and namespace names. From the errata
for the Namespaces in XML 1.0 specs:
<quote>
The prefix xml is by definition bound to the namespace 
name http://www.w3.org/XML/1998/namespace. It may, 
but need not, be declared, and must not be bound to 
any other namespace name. No other prefix may be 
bound to this namespace name. 

The prefix xmlns is used only to declare namespace 
bindings and is by definition bound to the namespace 
name http://www.w3.org/2000/xmlns/. It must not be 
declared. No other prefix may be bound to this 
namespace name. 
</quote>

The following four not-well-formed documents are not
rejected by Expat:

<?xml version="1.0"?>
<!-- Reserved prefixes and namespaces: declaring the 
xml prefix incorrectly -->
<foo xmlns:xml="http://example.org/namespace"/>

<?xml version="1.0"?>
<!-- Reserved prefixes and namespaces: binding another 
prefix to the xml namespace -->
<foo 
xmlns:yml="http://www.w3.org/XML/1998/namespace"/>

<?xml version="1.0"?>
<!-- Reserved prefixes and namespaces: declaring the 
xmlns prefix with its correct URI (illegal) -->
<foo xmlns:xmlns="http://www.w3.org/2000/xmlns/"/>

<?xml version="1.0"?>
<!-- Reserved prefixes and namespaces: declaring the 
xmlns prefix with an incorrect URI -->
<foo xmlns:xmlns="http://example.org/namespace"/>





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https://sourceforge.net/tracker/?func=detail&atid=110127&aid=695407&group_id=10127