#2 selected_component is hard to deal with

[Simon Wright]

Compound identifiers are hard to deal with: "with Ada.Characters.Handling;"
becomes

  <with_clause>
    <selected_component>
      <selected_component>
        <identifier>Ada</identifier>
        <identifier>Characters</identifier>
      </selected_component>
      <identifier>Handling</identifier>
    </selected_component>
  </with_clause>

It’d be good to produce a merged value, perhaps as an attribute.

[Simon Wright]

See defining_expanded_name:

  <function_declaration>
    <defining_expanded_name>X.Y.Z.A
    <selected_component>
      <selected_component>
        <identifier>X</identifier>
        <identifier>Y</identifier>
      </selected_component>
      <identifier>Z</identifier>
    </selected_component>
    <defining_identifier>
    A</defining_identifier></defining_expanded_name>

(NB, how to extract the expanded name text component only?)