<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  </head>
  <body>
    <p>Hello,</p>
    <p>I'm trying to modify
      schema/libreoffice/OpenDocument-v1.3+libreoffice-schema.rng to add
      a new attribute to number:text</p>
    <p>I added:</p>
    <p>  <rng:define name="number-text" combine="interleave"><br>
          <rng:ref name="number-text-attlist"/><br>
        </rng:define><br>
      <br>
        <rng:define name="number-text-attlist"><br>
          <rng:interleave><br>
            <rng:optional><br>
              <rng:attribute name="loext:blank-width-char"><br>
                <rng:ref name="string"/><br>
              </rng:attribute><br>
            </rng:optional><br>
          </rng:interleave><br>
        </rng:define><br>
    </p>
    <p>But I got the following error:
.../schema/libreoffice/OpenDocument-v1.3+libreoffice-schema.rng[7078,43]: 
      Fatal: <attribute> is grouped and that group is repeated</p>
    <p>The line number corresponds to nothing, and if I move the upper
      code on a different place in the file, the error is always at this
      unknown 7078th line.</p>
    <p>Any idea about what I could try?</p>
    <p>Best regards,</p>
    <p>Laurent Balland<br>
    </p>
    <div id="grammalecte_menu_main_button_shadow_host" style="width:
      0px; height: 0px;"></div>
  </body>
</html>