rust 在--help屏幕的末尾添加一条自定义帮助消息，

lvmkulzt 于 12个月前发布在其他

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使用Rust的Clap crate，我想在帮助屏幕的底部添加一条消息（在所有的标志描述之后）。有没有一种方法可以用clap-derive来实现？

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

字符串
预期产出：

MyProgram ...

  --file FILE  Path to a file

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

型

rust

来源：https://stackoverflow.com/questions/77622002/add-a-custom-help-message-at-the-end-of-help-screen-with-clap-derive

1条答案

按热度按时间

fkaflof61#

您正在寻找after_help属性

#[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>,
}

字符串
playground

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rust 在--help屏幕的末尾添加一条自定义帮助消息，

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