i don't think we can mix clap 3.1 & 3.2
see
#3634 (comment)

Ok, I reverted the changes and removed the relevant tests.

many CI jobs are failing, could you please have a look?
thanks

They all say

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.64.0-nightly (23e21bdd2 2022-07-15) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C incremental -Z binary-dep-depinfo -Z save-analysis

I don't think I changed anything that would break CI, I just added a Clap arg and a test function. I can replicate the error locally, but the error is in uu_od. It also occurs if I clone the upstream repo and run cargo +nightly udeps (udeps needs nightly).

Most of the CI jobs magically fixed themselves, and I fixed the style/spelling issues. Should be ready to merge now, unless you have any other issues?