您可以通过提供#[arg(long("custom_name")]来覆盖arg name

/// Simple program to greet a person
#[derive(Parser, Debug)]
#[command(author, version, about, long_about = None)]
struct Args {
    /// Name of the person to greet
    #[arg(short, long("full_name"))]
    full_name: String,
}

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或者，如果你想对所有参数使用snake_case命名，你可以通过设置#[command(rename_all = "snake_case")]来更改默认的重命名约定。

/// Simple program to greet a person
#[derive(Parser, Debug)]
#[command(author, version, about, long_about = None, rename_all = "snake_case")]
struct Args {
    /// Name of the person to greet
    #[arg(short, long)]
    full_name: String,
}

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