Non standard MusicXML tuplet question

[Menu Jacques]

Hello folks,

In 23c-Tuplet-Display-NonStandard.xml, part of the unofficial LP MusicXML suite, there’s:

    <measure number="3">
      <note>
        <pitch>
          <step>C</step>
          <octave>5</octave>
        </pitch>
        <duration>136</duration>
        <voice>1</voice>
        <type>eighth</type>
        <time-modification>
          <actual-notes>3</actual-notes>
          <normal-notes>2</normal-notes>
          <normal-type>breve</normal-type>
        </time-modification>
        <notations>
          <tuplet bracket="yes" show-number="both" show-type="actual" number="1" type="start">
            <tuplet-actual>
              <tuplet-number>7</tuplet-number>
              <tuplet-type>quarter</tuplet-type>
              <tuplet-dot/><tuplet-dot/><tuplet-dot/>
            </tuplet-actual>
            <tuplet-normal>
              <tuplet-number>5</tuplet-number>
              <tuplet-type>quarter</tuplet-type>
              <tuplet-dot/><tuplet-dot/><tuplet-dot/>
            </tuplet-normal>
          </tuplet>
        </notations>
      </note>

musicxml2ly ignores the 7 and 5 parts, and produces a regular 3/2 tuplet.

My question is: how is that supposed to be displayed in the score? The DTD’s don’t help much in this case...

Thanks for you help!

JM