pub fn run_from_args(extra_args: Vec<OsString>) -> Result<()>Expand description
Entry point when invoked as a hidden cfsctl mkcomposefs subcommand.
extra_args contains everything after the mkcomposefs token as captured
by clap’s trailing-var-arg mechanism. A synthetic argv[0] is prepended
so that Args::parse_from produces the same help text / error messages as
the standalone binary.