[Mono-devel-list] [PATCH] Default attribute removal in XmlElement

[Boris Kirzner]

Description of Problem:
- If the removed attribute is known to have a default value, an 
attribute should immediately appear containing the default value.
- Re-setting an attribute to its default value requires that the 
attribute be deleted. New attribute with its Specified property set to 
False should be created.

Steps to reproduce the problem :
1. Create DTD file defining some node having default attribute value.
2. Create XML file referencing the DTD, with node inside that attribute 
value having default in DTD is not explicitly specified.
3. Load XML document into XmlDocument
4. Remove the attribute
4. Inspect Value and Specified properties of the attribute.

Actual result :
System.NullReferenceException: A null value was found where an object 
instance was required in <0x00128>

Expected result :
Yes
False

Enclosed is a small test case and a patch.

Thank you in advance,

Boris Kirzner
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