Extended ODF schema

[Regina Henschel]

Hi Laurent,

This is all without warranty, I am not an expert on rng.

Laurent Balland schrieb am 07.02.2023 um 21:50:
> Hello,
> 
> I'm trying to modify 
> schema/libreoffice/OpenDocument-v1.3+libreoffice-schema.rng to add a new 
> attribute to number:text
> 
> I added:
> 
>    <rng:define name="number-text" combine="interleave">
>      <rng:ref name="number-text-attlist"/>
>    </rng:define>
> 
>    <rng:define name="number-text-attlist">
>      <rng:interleave>
>        <rng:optional>
>          <rng:attribute name="loext:blank-width-char">
>            <rng:ref name="string"/>
>          </rng:attribute>
>        </rng:optional>
>      </rng:interleave>
>    </rng:define>
> 
> 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
> 
> 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. >
> Any idea about what I could try?

The line 7078 belongs to <rng:element name="number:date-style">
That can have several <rng:ref name="number-text-with-fillchar"/>.
Such is in line 7427. It can have several <rng:ref name="number-text"/>.
Currently all together resolves to several <rng:element 
name="number:text"> and  <rng:element name="number:fill-character">. So 
currently <number:date-style> element can have several child elements 
<number:text>. That is no problem, because several child elements with 
the same name are possible.

Now you introduce an attribute into <rng:ref name="number-text"/>. That 
means, that when resolving it for <number:date-style> element this would 
get several attributes with the same name. And that is not possible.

You need to look, to which element your new attribute belongs.

Kind regards,
Regina