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Accepted
Yuri Astrakhan
Asked: 2023-12-08 01:29:34 +0800 CST

使用 clap-derive 在 --help 屏幕末尾添加自定义帮助消息

  • 772

使用 Rust 的Clap箱，我想在帮助屏幕的底部添加一条消息（在所有标志描述之后）。有没有办法用 来做到这一点clap-derive？

#[derive(Parser, Debug, Default)]
#[command(about, version)]
pub struct Args {
    /// Path to a file.
    #[arg(short, long)]
    pub file: Option<PathBuf>,
}

预期输出：

MyProgram ...

  --file FILE  Path to a file

Some very long explanation that should be printed at the end of the help screen
rust

1 个回答

  1. Best Answer

    您正在寻找after_help房产

    #[derive(Parser, Debug, Default)]
#[command(about, version, after_help = 
    "Some very long explanation that should be printed at the end of the help screen"
)]
pub struct Args {
    /// Path to a file.
    #[arg(short, long)]
    pub file: Option<PathBuf>,
}

    操场

    • 3

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