PPTX chart text not being extracted...
I will try to post a pull document if I can. This is a Japanese document and AFAICT none of the chart text values are extracted. However we do get a TU with a single space.
<file original="ppt/charts/chart1.xml" source-language="en" target-language="fr"
datatype="x-undefined" okp:inputEncoding="UTF-8">
<header>
<tool tool-id="okapi" tool-name="okapi-tests" tool-version="M29" tool-company="okapi"/>
</header>
<body>
<trans-unit id="P227F4D25-tu1" xml:space="preserve">
<source xml:lang="en"> </source>
<target xml:lang="fr"> </target>
</trans-unit>
</body>
</file><c:cat> <c:strRef> <c:f>BS!$H54:H$57</c:f> <c:strCache> <c:ptCount val="4"/> <c:pt idx="0"> <c:v>\u30d3\u30eb\u4e8b\u696d</c:v> </c:pt> <c:pt idx="1"> <c:v>\u4f4f\u5b85\u4e8b\u696d</c:v> </c:pt> <c:pt idx="2"> <c:v>\u30a2\u30bb\u30c3\u30c8\u30b5\u30fc\u30d3\u30b9\u4e8b\u696d</c:v> </c:pt> <c:pt idx="3"> <c:v>\u305d\u306e\u4ed6</c:v> </c:pt> </c:strCache> </c:strRef> </c:cat>