On Sat, Feb 05, 2022 at 12:37:44AM +0100, luigi scarso via ntg-context wrote: > On Fri, Feb 4, 2022 at 11:11 PM Karl Pettersson via ntg-context < > ntg-context@ntg.nl> wrote: > > > On Fri, Feb 04, 2022 at 10:25:27PM +0100, Hans Hagen via ntg-context wrote: > > > On 2/4/2022 7:29 PM, Karl Pettersson via ntg-context wrote: > > > > Hi > > > > > > > > PDF/A files generated using ConTeXt fail validation with veraPDF, and > > > > the reason seems to be that the dc:description metadata is defined with > > > > the wrong type in the embedded XMP extension schema. > > > > > > > > > > https://tex.stackexchange.com/questions/632380/generate-pdf-a-with-context > > > > > > > > https://github.com/veraPDF/veraPDF-library/issues/1224 > > > > > > > > I can reproduce the problem using TeX Live 2021 (MkIV 2021.03.05). The > > > > definition seems to be controlled by this code. > > > > > > > > > > https://source.contextgarden.net/tex/context/base/mkiv/lpdf-pua.xml?search=rdf#l81 > > > so "dc:description" is not permitted? it is mentioned in > > > > > > > > https://www.dublincore.org/specifications/dublin-core/dcmi-terms/#http://purl.org/dc/elements/1.1/description > > > > > > (btw it never failed before) > > > > The description element is permitted, but the problem seems to be that > > its valueType is defined as Text in the embedded schema, while the > > metadata element in the PDF has an embedded <rdf:Alt><rdf:li > > xml:lang="x-default"> structure. > > > > > > https://github.com/veraPDF/veraPDF-library/issues/1224#issuecomment-1029932963 > > > > (I suppose the reference to "title" in the issue comment should be > > "description".) > > > > Validating with veraPDF <1.20 does not raise the error. The validation > > seems to have changed for redefined types in that version. > > > > > > https://github.com/veraPDF/veraPDF-library/blob/integration/RELEASENOTES.md#validation > > > I am missing something here... true > <dc:description>FOO</dc:description> > makes a valid pdf 3a with verapdf 1.20.1. > But dc:description is like dc:title, so where we are redefining > dc:description as Text ? > > -- > luigi
Attach metadata xml for the non-validating and validating example (extraced with `pdfinfo -meta | xmllint format -`) in the Github issue. Here is a reference to the description element. Note that only description seems to be redefined, not title. https://source.contextgarden.net/tex/context/base/mkiv/lpdf-pua.xml#l81 > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to the > Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ -- Karl Pettersson Uppsala, Sweden https://static-dust.klpn.se/
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___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________
