PPTX text from diagrams not extracted

[Former user]

Original issue 329 created by @ysavourel on 2013-04-24T15:27:19.000Z:

It looks like text from diagrams files are not extracted from PPTX document.

For example in ppt/diagrams/dataNN.xml the elements <a:t> content where xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"

[Former user]

Comment 1. originally posted by @ysavourel on 2013-04-24T15:55:58.000Z:

[Former user]

Comment 2. originally posted by @ysavourel on 2013-04-24T20:59:42.000Z:

I think this may be a duplicate of issue #286, but I would need to look at both documents to be sure.

[Former user]

Comment 3. originally posted by @ysavourel on 2013-07-01T17:00:57.000Z: