Am 28.02.2022 um 21:41 teilte Ralf Jung mit: H,
I reported this upstream at https://github.com/plk/biber/issues/403, but the maintainer suggested this might be a packaging issues since they could not reproduce the problem.
https://github.com/plk/biber/issues/403#issuecomment-1069287108So the main difference is that we (Debian) call perl with option "-w". After removing the option the warnings go away. Not sure if we should solve the issue this way.
Hilmar -- sigfault
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