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<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>
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