Cannot define completion only for a particular command option

[czpilar]

Consider this configuration:

@SpringBootApplication
public class SpringShellApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringShellApplication.class, args);
    }

    @Command(name = "hello", completionProvider = "helloNameCompletionProvider")
    public void sayHello(@Option(longName = "name", shortName = 'n') String name) {
        System.out.println("Hello " + name + "!");
    }

    @Bean
    public CompletionProvider helloNameCompletionProvider() {
        return completionContext -> {
            CommandOption option = completionContext.getCommandOption();
            if (option == null) {
                return Collections.emptyList();
            }
            if ("name".equals(option.longName()) || 'n' == option.shortName()) {
                return Stream.of("Peter", "Paul", "Mary").map(CompletionProposal::new).toList();
            }
            return Collections.emptyList();
        };
    }

}

Step to reproduce:

1. Type hello
2. Press Tab and select --name or -n option
3. Press Tab again and observe that no completion proposal is shown.

This is caused because no command option is provided within completion context so completionContext.getCommandOption() is always null.

[czpilar]

Resolved in PR by providing CommandOption to CompletionContext.

[czpilar]

Solving also situation when one long option name is defined as --name and another as --na.