[libcxx-commits] [libcxx] [libc++][test][NFC] Clang-format `<regex>` tests (PR #164367)

[Louis Dionne via libcxx-commits]

ldionne wrote:

> Re. the Container formatting, I can't remember what went on in February, so with the current information I have I don't think it was a good idea.

Right, as @Zingam said, I'm pretty sure it was related to the constexpr-ification.

In terms of this patch, I'd be OK with taking it, but since it appears controversial, I'll close this PR. We can do this again when we have a clearer intent to modify `<regex>` and its tests.

https://github.com/llvm/llvm-project/pull/164367