good first issuehelp wantedkind/doc
説明
https://github.com/lsd-rs/lsd/blob/2fe3fcdd3564836962eab8ba6b1444996fe24e1e/build.rs#L24-L36
despite lsd providing shell completions via clap_complete::generate_to, there is no documentation that either SHELL_COMPLETIONS_DIR or OUT_DIR environment variable needs to be set to generate one.
alternatively, LSD could provide a command-line option to generate completions at runtime.