Acrobat doesn’t display some imported metadata

* Acrobat doesn’t display some imported metadata
@ 2021-09-19  7:29 Pablo Rodriguez via ntg-context
  0 siblings, 0 replies; only message in thread
From: Pablo Rodriguez via ntg-context @ 2021-09-19  7:29 UTC (permalink / raw)
  To: mailing list for ConTeXt users; +Cc: Pablo Rodriguez

Dear list,

I have the following sample to import metadata (title, author, subject,
keywords and dates).

  \starttext
  \startluacode
  function document.transfer_metadata(name)
    local main_doc = lpdf.epdf.load(name)
    lpdf.addtocatalog("Lang", lpdf.unicode(main_doc.Catalog.Lang),
      main_doc.Catalog.Lang)
    lpdf.addtoinfo("Title", lpdf.unicode(main_doc.Info.Title),
      lpdf.string(main_doc.Info.Title))
    lpdf.addtoinfo("Subject", lpdf.unicode(main_doc.Info.Subject),
      lpdf.string(main_doc.Info.Subject))
    lpdf.addtoinfo("Keywords", lpdf.unicode(main_doc.Info.Keywords),
      lpdf.string(main_doc.Info.Keywords))
    lpdf.addtoinfo("Author", lpdf.unicode(main_doc.Info.Author),
      lpdf.string(main_doc.Info.Author))
    lpdf.addtoinfo("CreationDate",
      lpdf.string(main_doc.Info.CreationDate))
    lpdf.addtoinfo("ModDate", lpdf.string(main_doc.Info.ModDate),
      main_doc.Info.ModDate)
    lpdf.epdf.unload(name)
  end
  \stopluacode
  \unexpanded\def\TransferMetadata#1%
    {\ctxlua{document.transfer_metadata("#1")}}
  \startTEXpage[offset=1em, align=center]
  \ssbf metadatos\\importados
  \TransferMetadata{metadata.pdf}
  \stopTEXpage
  \stoptext

Importing from https://pdf.ousia.tk/metadata.pdf gives
https://pdf.ousia.tk/imported-metadata.pdf.

Imported metadata from title, creation and modification dates are not
displayed right in Acrobat. Other PDF viewers display these metadata fine.

How can I get that Acrobat displays the metadata from the imported document?

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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