mirror of
https://github.com/clap-rs/clap
synced 2024-12-16 23:53:10 +00:00
14 lines
457 B
Rust
14 lines
457 B
Rust
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macro_rules! get_help {
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($opt:ident) => {
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if let Some(h) = $opt.help {
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format!("{}{}", h,
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if let Some(ref pv) = $opt.possible_vals {
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let mut pv_s = pv.iter().fold(String::with_capacity(50), |acc, name| acc + &format!(" {}",name)[..]);
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pv_s.shrink_to_fit();
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format!(" [values:{}]", &pv_s[..])
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}else{"".to_owned()})
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} else {
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" ".to_owned()
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}
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};
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}
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