Interactive parameter asks for value to be entered at once

I have the following Main class with subcommands:

@Command(description = "MyTools for testing",
    name = "MyTools",
    mixinStandardHelpOptions = true,
    usageHelpWidth = 120,
    version = "MyTools 1.0",

    subcommands = {
        //some other commands
        BCryptPasswordCommand.class
    }
)
public class Main implements Callable<Void> {

    @CommandLine.Option(names = {"--verbose"}, description = "to produce more information, especially for error debugging", defaultValue = "false")
    private boolean verbose;

    @Override
    public Void call() {
        System.err.println("Missing a sub-command specification");
        new CommandLine(new Main()).usage(System.err);
        System.exit(1);
        return null;
    }

    public static void main(String[] args) {
        Main main = new Main();
        try {
            //CommandLine.call(main, args);
            new CommandLine(main).execute(args);
        } catch (Exception e) {
            // print exception
        }
    }
}

and the BCryptPasswordCommand:

@CommandLine.Command(
    description = "BCrypt the password",
    name = "encodePwd")
public class BCryptPasswordCommand implements Callable<Void> {
    @CommandLine.Parameters(index = "0", interactive = true, description = "Password to encrypt")
    private String password;

    @Override
    public Void call() throws Exception {
        BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
        String encodedPassword = encoder.encode(password);
        CliUtil.printCliInfoMessage(encodedPassword);
        return null;
    }
}

WHAT I DO: i run java -jar myTools.jar encodePwd CURRENT BEHAVIOR: i’m not offered to enter password, the code just runs with null password. EXPECTED: i’m offered to enter password

It’s interesting that when i do java -jar myTools.jar encodePwd blabla, i’m offered to enter the password interactively, but then get: Unmatched argument at index 1: 'blabla', so it looks like it takes both arguments into account: “blabla” and the one entered interectively after.

VERSION: the same for 3.9.5 and 4.0.4

[remkop]

If you like picocli, please star the project on GitHub and tell your friends. 😃

[remkop]

I added a cautionary note to the user manual: https://picocli.info/#_interactive_password_options