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

[Nathan James via Phabricator via cfe-commits]

njames93 added a comment.

In D97563#2625513 <https://reviews.llvm.org/D97563#2625513>, @lebedev.ri wrote:

> 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?

Clang-tidy already deals with that using the `--header-filter` option.


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https://reviews.llvm.org/D97563