Xml - don't automatically encode attribute values

[belav]

Currently xml attributes are encoded when run through CSharpier, which results in them being less readable.

Input

<Target Name="Transform" BeforeTargets="Build">
  <Message Importance="high" Text="@(MyItems->'MyItems has %(Identity)', ', ')" />
</Target>

Output

<Target Name="Transform" BeforeTargets="Build">
  <Message Importance="high" Text="@(MyItems-&gt;'MyItems has %(Identity)', ', ')" />
</Target>

This happens automatically with XAttribute but the code does make use of that along with the associated XmlAttribute to keep the original new lines in attribute values. Does using only XmlAttribute cause some other issue? Can the code figure out how to keep unencoded values for everything?

[belav]

XmlAttribute always gives the unencoded value.
XAttrbitue always gives the encoded value.

This may require deciding which values should be encoded. This is a test to ensure we keep encoded values.

<Project>
  <Element AttributeLineEndingDecimal="@('', '&#xA;')" />
  <Element AttributeLineEndingHexidecimal="@('', '&#xA;')" />
  <Element Attribute="&quot;&quot; &amp;&amp;" />
</Project>

Ideally the original file would be taken into account. Keeping values encoded if they were encoded there.