The output of prog --help contains 2 final new lines, while prog --version only contains one.
The when catching the --help parse failure it is unclear whether to print stdout errors with print! or println! to maintain consistency.
The respective Docs should both either contain or omit a new line character
#[allow(dead_code)]
#[derive(Debug, Bpaf)]
#[bpaf(options, version)]
pub struct Options {
/// Message to print in a big friendly letters
#[bpaf(positional("MESSAGE"))]
message: String,
}
fn main() {
let parsed = options().run_inner(Args::current_args());
if let Err(ParseFailure::Stdout(m,_ )) = parsed {
println!("{:?}",m.to_string());
};
}
$ cargo run -- --help
"Usage: prog MESSAGE\n\nAvailable positional items:\n MESSAGE Message to print in a big friendly letters\n\nAvailable options:\n -h, --help Prints help information\n -V, --version Prints version information\n"
$ cargo run -- --version
"Version: 0.1.0"
The output of
prog --helpcontains 2 final new lines, whileprog --versiononly contains one.The when catching the
--helpparse failure it is unclear whether to print stdout errors withprint!orprintln!to maintain consistency.The respective
Docs should both either contain or omit a new line character