[libc-commits] [libc] [libc] Implemented CharacterConverter push/pop for utf32->utf8 conversions (PR #143971)

[Michael Jones via libc-commits]

https://github.com/michaelrj-google commented:

Minor nits, but I think this PR is basically done. After both this and the other half of the conversions land I think we should plan to have a cleanup patch to unify their implementations a bit (deduplicate shared constants, match on table vs bitshifts, etc.) but that can be done later.

https://github.com/llvm/llvm-project/pull/143971