Subcommand flags are separated by spaces while argument flags use commas

[Trivernis]

Please complete the following tasks

• I have searched the discussions
• I have searched the open and rejected issues

Rust Version

1.63.0

Clap Version

3.2.22

Minimal reproducible code

use clap::{Parser, Subcommand};

#[derive(Parser)]
#[clap()]
struct Args {
    #[clap(short)]
    arg: String,

    #[clap(subcommand)]
    subcommand: Command,
}

#[derive(Subcommand)]
enum Command {
    #[clap(name = "test", short_flag = 't', long_flag = "test")]
    Test,
}

fn main() {
    let _args = Args::parse();
}

Steps to reproduce the bug with the above code

cargo run

Actual Behaviour

The help output is

clap-test 

USAGE:
    clap-test -a <ARG> <SUBCOMMAND>

OPTIONS:
    -a <ARG>        
    -h, --help      Print help information

SUBCOMMANDS:
    help              Print this message or the help of the given subcommand(s)
    test -t --test    

Which separates the options-flags by comma while the subcommand flags are just separated by space. This behaviour is inconsistent. I personally would prefer to use comma for separation in both cases as it is easier to understand.

Expected Behaviour

The help output should look like this:

clap-test 

USAGE:
    clap-test -a <ARG> <SUBCOMMAND>

OPTIONS:
    -a <ARG>        
    -h, --help      Print help information

SUBCOMMANDS:
    help              Print this message or the help of the given subcommand(s)
    test, -t, --test    

Additional Context

This issue relates to crystal-linux/amethyst#64

Debug Output

No response

[epage]

This was fixed in master which corresponds with the upcoming v4.0.0