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
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