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Subject: Re: [docbook-apps] Should xmllint successfully validate docbook 5 containing XIncludes?

Hi Jon,
I think Carlos meant to use the official MathML namespace instead of a DTD reference:


It seems loading the MathML DTD confused Jing. The DocBook 5 RelaxNG schema permits elements in the MathML namespace, but it does not try to validate them. But it seems your problem is recognizing the named character entities in the MathML DTD. If Jing does not like loading the entire MathML DTD as you tried, it would probably accept loading just the entity declarations from the DTD. You could try copying the MathML dtd to another file and stripping out all *but* the entity declarations. Those are conveniently located at the end of the DTD file. Then reference that file in the parameter entity in the DOCTYPE to load those entities.

Then Jing should validate against the DocBook 5 RNG schema. If you also want to validate the embedded MathML elements, you will need a validator compatible with NVDL such as oNVDL ( http://www.oxygenxml.com/onvdl.html ).

Bob Stayton
Sagehill Enterprises

From: Carlos Araya
Sent: Wednesday, October 30, 2013 1:24 PM
To: docbook-apps@lists.oasis-open.org
Subject: Re: [docbook-apps] Should xmllint successfully validate docbook 5 containing XIncludes?

Have you tried using the namespace declaration in your document?

Something like this:

<?xml version="1.0" encoding="utf-8"?>
<article        xmlns='http://docbook.org/ns/docbook'
xmlns:xlink='http://www.w3.org/1999/xlink' xmlns:mathml="http://www.w3.org/TR/MathML2/dtd/mathml2.dtd";
       version="5.0" xml:lang="en"><title>Title of your document</title>

This should replace the entity declaration and still let your mathml validate.

On Tue, Oct 29, 2013 at 2:53 AM, Jon Leech <jon@alumni.caltech.edu> wrote:

On 10/28/2013 10:31 PM, Bob Stayton wrote:

The short answer is no, xmllint does not successfully validate DocBook 5 documents that are in fact valid.

I normally use Jing to validate DocBook 5. I've not seen it hang like you have.

Thanks, that's good to know going forward. It turns out that stripping the

<!DOCTYPE refentry [
<!ENTITY % mathml PUBLIC "-//W3C//DTD MathML 2.0//EN"

prolog from my documents will prevent jing from hanging. Unfortunately it will also prevent some of them from validating, since they use MathML entities like ⌊ . I filed a bug on the jing project page to ask about this but perhaps I'm missing some other way to be able to use these entities that would work around this issue?

   Jon Leech

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