[xml] Attr Value Normalization Problem

[Ashwin]

According to the XML spec the for the following entity declarations 

<!ENTITY d "&#xD;">

<!ENTITY a "&#xA;">

<!ENTITY da "&#xD;&#xA;">

 

If we have an attr of type NMToken the normalization for attr a

a="&d;&d;A&a;&#x20;&a;B&da;"

should be

a = A #x20 B.

 

The above example is directly from the spec, however libxml normalizes the
attribute to the following

A = #x0D #x0D A #x0A #x20 #x0A B.

 

This seems to be a bug.

 

Also suppose I have a document with an attribute value consisting of an
entity reference defined in a DTD, normalization does not happen at all for
the replacement text of the entity reference.

 

For instance I have an xml doc which has the following element, attr1 is of
type other than CDATA

<element attr1="&normalize;  &normalize;  &normalize;">

Two Spaces between entity ref's

Where

<!ENTITY normalize " test&norm; "> ----Single space before and after entity
text

<!ENTITY norm     "hi">

So the normalized value for the above should be

Attr1 = "testhi testhi testhi", Single space only between replacement text

Libxml however returns attr1=" testhi   testhi   testhi ".---Single space
after the beginning Quote and before the ending quote. Three spaces between
entity replacement text.

 That's it is not getting normalized properly, this too seems to be a
bug...The only doubt I have is whether entity replacement text is exempt
from normalization? The spec however does not say so anywhere.

 

Regards

Ashwin Sinha

 


<!DOCTYPE doc [
<!ELEMENT doc (#PCDATA)>
<!ATTLIST doc a NMTOKENS #IMPLIED>
<!ENTITY d "&#xD;">
<!ENTITY a "&#xA;">
<!ENTITY da "&#xD;&#xA;">
]>\r\n
<doc a="&d;&d;A&a;&#x20;&a;B&da;"></doc>

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