[PATCH] D97563: [clang-tidy] Enable modernize-concat-nested-namespaces also on headers

[Roman Lebedev via Phabricator via cfe-commits]

lebedev.ri added a comment.

I think the implicit question is: won't this regress headers that are meant to be compatible with earlier standards?
Did the original review mention anything about this?


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  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D97563/new/

https://reviews.llvm.org/D97563