Re: validation issues with .pptx files

Hi Thorsten,

On Tuesday, December 20, 2016 07:41 GMT, Thorsten Behrens <thb@libreoffice.org> wrote:

> Tamas Zolnai wrote:
> > On Monday, December 19, 2016 20:35 GMT, Xisco Fauli <xiscofauli@libreoffice.or> > > Testing the 
> > office-interoperability-tools with .pptx files I found out
> > > > that 121 documents out of 895 failed to open in MSO Power Point 2010
> > > > after a roundtrip in LibreOffice. List of documents:
> > > > https://bugs.documentfoundation.org/attachment.cgi?id=129789. So I
> > > > validated some of those documents with Open XML SDK 2.5 tool and it
> > > > turned out most of them are affected by the same errors ( down to 6
> > > > right now ) which I've already reported in
> > > > https://bugs.documentfoundation.org/show_bug.cgi?id=104787. Some
> > > > documents are just affected by one and others by more than 1.
> >
> > In my experiences (mainly with DOCX) Open XML SDK validation often
> > shows errors which are not problems for MSO while opening (I guess
> > there are some robustness in the import code), and also there are
> > some cases when SDK validation does not show a problem in the
> > document which makes MSO to fail opening it. So I'm not sure these
> > numbers you've got using this SDK correlate with the real number of
> > bugs we have here.
> Then again, Xisco says he also tested against MSO 2010, so that's
> probably the set of documents to focus on.

I meant not the document numbers, but the numbers of errors they are affected by:
"most of them [tested documents] are affected by the same errors ( down to 6  right now )"

Best Regards,
Tamás