[XXE] Implementing the DocBook insertXref command with section ID pick

[Petr Nalevka]

Hello,

I have implemented a simple command to insert DocBook cross references using
xref.

Here is the code:
  <command name="db5.insertXref">
    <macro repeatable="true" undoable="true" label="Insert XRef">
      <sequence>
        <pass>
            <command name="insert" parameter="into {
http://docbook.org/ns/docbook}xref <http://docbook.org/ns/docbook%7Dxref>"/>
        </pass>
        <command name="insert" parameter="into {
http://docbook.org/ns/docbook}xref <http://docbook.org/ns/docbook%7Dxref>"/>

        <set variable="idList" expression="//@xml:id"/>
        <get expression="$idList" />

        <command name="pick" parameter="'Select crossreference linkend'
false %_" />
        <command name="putAttribute" parameter="linkend %_" />
        <command name="insertString" parameter=" " />
      </sequence>
    </macro>
  </command>

It works fine, but in a modular document environment it of course shows only
ID from the current document fragment. If I rather use the attribute list
dialog and click the "List of values" I get a much better list which
includes also all xml:ids from included fragments. Would it be possible to
implement such a comprehensive pick using the XXE commands?

Even better would be to get xml:ids not only from the current fragment and
all included fragments but also from "Preceding" fragments recursively.

Thank you very much for help.

Best regards,

Petr Nalevka
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