[GitHub] [pdfbox] bernhardf-ro commented on pull request #149: Allow negative struct parent keys in PDFMergerUtility

[GitBox <gi...@apache.org>]

bernhardf-ro commented on PR #149:
URL: https://github.com/apache/pdfbox/pull/149#issuecomment-1378817161

   Here is a document to verify the issue. (Sorry, I forgot to add that to the issue in the first place.)
   [merge.pdf](https://github.com/apache/pdfbox/files/10393126/merge.pdf)
   It is a valid PDF/UA-1, according to PDF Accessibility Checker 2021.
   Appending it to itself using PDFMergerUtility results in a document that is not valid PDF/UA. ("Structural parent tree" issue)
   With the patch applied the merge result is valid PDF/UA-1.


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