[libcxx-commits] [libcxx] [libc++] Replace `std::optional` in `__format/format_context.h` with a re-implementation (PR #148876)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 requested changes to this pull request.

I don't think this is a good idea. Could you elaborate on where there is a circular dependency? AFAICT You only need to specialize two variables, which definitely doesn't have to cause circular dependencies.

https://github.com/llvm/llvm-project/pull/148876