Multi-value option overwriting

This code:

class Params {
  @Option(names = "-a")
  private String a;

  @Option(names = "-b", split = ",")
  private List<String> b;
}

String[] args = new String[] {
   "-a", "10",
   "-a", "11",
   "-b", "20,21",
   "-b", "22,23",
};

Params params = new Params();

new CommandLine(params)
   .setOverwrittenOptionsAllowed(true)
   .parse(args);

System.out.println(params.a);
System.out.println(params.b);

prints:

11
[20, 21, 22, 23]

The docs only mention single-value (-a above) overwriting and it’s working as expected. There doesn’t seem to be a way to apply the same to multi-value (-b above) options.

[remkop]

Thanks for following up.

I see your point. To be honest, until your request I had not considered applications might want to replace values instead of add to the collection for a multi-value option.

I understand you want to make this a first-class citizen of the library. I need to think about this some more.

If other people also want this feature, please leave a comment below.

[remkop]

Closing this issue. The current API supports the use case (via the @Option-annotated setter method).