[libcxx-commits] [libcxx] [libc++][format] Handle range-underlying-spec (PR #81914)

[Mark de Wever via libcxx-commits]

https://github.com/mordante commented:

> Ping~

Sorry I didn't have time to look at this earlier.

Mainly looks good one small nit.

https://github.com/llvm/llvm-project/pull/81914