Public bug reported:

O'Reilly has a sample DocBook at
https://prod.oreilly.com/external/tools/docbook/docs/authoring/docbook_source/.
After installing Ubuntu's DocBook, `docbook2pdf` was not able to compile
O'Reilly's sample book and produce a PDF.

It seems the DocBook package uses a dated version of OpenJade. Not only
is it out-dated, it is no longer supported.

To get the tool to work, it was necessary to run `xmllint --xinclude`
first. The preprocessing fixed the compile errors, but the resulting PDF
does not include images.

Images are included with <mediaobjects> tag. It appears <mediaobjects>
was a fix for an earlier <graphic> tag (which lacked an alternate text).
OpenJade does not support <mediaobjects>, and there is no fix since its
so old and no longer supported.

Perhaps it would be a good idea to update the toolchain with programs
that work as expected and are supported.

** Affects: docbook (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/881254

Title:
  DocBook Package: Tools are broken and no longer supported

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