Hi, So I got this situation which sucks. I have an XML like this

<table border="1" cols="200 100pt 200">
  <tr>
    <td>isbn</td>
    <td>title</td>
    <td>price</td>
  </tr>
  <tr>
    <td />
    <td />
    <td>
      <span type="champsimple" id="9b297fb5-d12b-46b1-8899-487a2df0104e" categorieid="a1c70692-0427-425b-983c-1a08b6585364" champcoderef="01f12b93-b4c5-401b-9da1-c9385d77e43f">
        [prénom]
      </span>
      <span type="champsimple" id="e103a6a5-d1be-4c34-8a54-d234179fb4ea" categorieid="a1c70692-0427-425b-983c-1a08b6585364" champcoderef="01f12b93-b4c5-401b-9da1-c9385d77e43f">[nom]</span>
      <span></span>
    </td>
  </tr>
  <tr></tr>
  <tr>
    <td></td>
    <td>Phill It in</td>
  </tr>
  <tr>
    <table id="cas1">
      <tr>
        <td ></td>
        <td >foo</td>
      </tr>
      <tr>
        <td >bar</td>
        <td >boo</td>
      </tr>
    </table>
  </tr>
  <tr>
    <table id="cas2">
      <tr>
        <td ></td>
        <td >foo</td>
      </tr>
      <tr>
        <td ></td>
        <td >boo</td>
      </tr>
    </table>
  </tr>
  <tr>
    <table id="cas3">
      <tr>
        <td >bar</td>
        <td ></td>
      </tr>
      <tr>
        <td >foo</td>
        <td >boo</td>
      </tr>
    </table>
  </tr>
  <tr>
    <table id="cas4">
      <tr>
        <td />
        <td />
      </tr>
      <tr>
        <td>foo</td>
        <td>boo</td>
      </tr>
    </table>
  </tr>
  <table id="cas4">
    <tr>
      <td />
      <td />
    </tr>
    <tr>
      <td>foo</td>
      <td>boo</td>
    </tr>
  </table>
  <tr>
    <td />
    <td />
  </tr>
</table>

Now the question is how would I recursively delete all empty td, tr and table elements?

Now I use this XSLT

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output omit-xml-declaration="yes" indent="yes"/>
  <xsl:strip-space elements="*" />

  <xsl:template match="node()|@*">
    <xsl:copy>
      <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="td[not(node())]" />
  <xsl:template match="tr[not(node())]" />
  <xsl:template match="table[not(node())]" />

</xsl:stylesheet>

But it doesn't do very well. After I delete td, a tr becomes empty but it doesn't handle that. Too bad. See the table element with "cas4".

<table border="1" cols="200 100pt 200">
  <tr>
    <td>isbn</td>
    <td>title</td>
    <td>price</td>
  </tr>
  <tr>
    <td>
      <span type="champsimple" id="9b297fb5-d12b-46b1-8899-487a2df0104e" categorieid="a1c70692-0427-425b-983c-1a08b6585364" champcoderef="01f12b93-b4c5-401b-9da1-c9385d77e43f">
        [prénom]
      </span>
      <span type="champsimple" id="e103a6a5-d1be-4c34-8a54-d234179fb4ea" categorieid="a1c70692-0427-425b-983c-1a08b6585364" champcoderef="01f12b93-b4c5-401b-9da1-c9385d77e43f">[nom]</span>
      <span />
    </td>
  </tr>
  <tr>
    <td>Phill It in</td>
  </tr>
  <tr>
    <table id="cas1">
      <tr>
        <td>foo</td>
      </tr>
      <tr>
        <td>bar</td>
        <td>boo</td>
      </tr>
    </table>
  </tr>
  <tr>
    <table id="cas2">
      <tr>
        <td>foo</td>
      </tr>
      <tr>
        <td>boo</td>
      </tr>
    </table>
  </tr>
  <tr>
    <table id="cas3">
      <tr>
        <td>bar</td>
      </tr>
      <tr>
        <td>foo</td>
        <td>boo</td>
      </tr>
    </table>
  </tr>
  <tr>
    <table id="cas4">
      <tr />
      <tr>
        <td>foo</td>
        <td>boo</td>
      </tr>
    </table>
  </tr>
  <table id="cas4">
    <tr />
    <tr>
      <td>foo</td>
      <td>boo</td>
    </tr>
  </table>
  <tr />
</table>

How would you solve this problem?