mod shells {    pub use clap_complete::aot::{Bash, Elvish, Fish, PowerShell, Zsh};    pub use clap_complete_nushell::Nushell;} use clap_complete::Generator; #[derive(Clone, Debug, clap::ValueEnum)]#[non_exhaustive]#[value(rename_all = "lower")]pub(crate) enum Shell {    Bash,    Elvish,    Fish,    Nushell,    PowerShell,    Zsh,} impl Generator for Shell {    fn file_name(&self, name: &str) -> String {        match self {            Shell::Bash => self::shells::Bash.file_name(name),            Shell::Elvish => self::shells::Elvish.file_name(name),            Shell::Fish => self::shells::Fish.file_name(name),            Shell::Nushell => self::shells::Nushell.file_name(name),            Shell::PowerShell => self::shells::PowerShell.file_name(name),            Shell::Zsh => self::shells::Zsh.file_name(name),        }    }     fn generate(&self, cmd: &clap::Command, buf: &mut dyn std::io::Write) {        match self {            Shell::Bash => self::shells::Bash.generate(cmd, buf),            Shell::Elvish => self::shells::Elvish.generate(cmd, buf),            Shell::Fish => self::shells::Fish.generate(cmd, buf),            Shell::Nushell => self::shells::Nushell.generate(cmd, buf),            Shell::PowerShell => self::shells::PowerShell.generate(cmd, buf),            Shell::Zsh => self::shells::Zsh.generate(cmd, buf),        }    }} pub(crate) fn main(cmd: &clap::Command, shell: &Shell) {    let buf = &mut std::io::stdout();    shell.generate(cmd, buf);}