attribute splitSynopsisLabel: incorrect usage message

[deining]

Picocli 4.3.0 introduced the attribute splitSynopsisLabel, which is great.
I encountered a minor issue when trying out the new attribute:

1  package test;
2  import picocli.CommandLine;
3  import picocli.CommandLine.Command;
4  import picocli.CommandLine.Option;
5
6  public class ExecuteTest {
7   
8      static CommandLine cmd;

9      public static void main(String[] args) {
10       cmd = new CommandLine(new TestCommand());
11       cmd.usage(cmd.getOut());
12     }
13 
14    @Command(name = "ExecuteTest")
15     static class TestCommand implements Runnable {
16       
17      @Option(names = "x", split="\\|", splitSynopsisLabel = "|")
18         static String[] parts = {};
19 
20         @Override
21         public void run() {
22             }
23         }
24     }
25 }

This now results in a proper usage message:

Usage: ExecuteTest [x=<parts>[|<parts>...]]...

Now I remove the attribute split from the option while leaving the the attribute splitSynopsisLabel in place:

17 @Option(names = "x", splitSynopsisLabel = "|")

I'm still getting the same usage message (which is incorrect now):

Usage: ExecuteTest [x=<parts>[|<parts>...]]...

I see two possible remedies:

• when using attribute splitSynopsisLabel, check whether corresponding attribute split is given, throw an exception in case of missing attribute
• print corrrect usage message if split attribute is missing

[remkop]

Thank you for raising this!
This is now fixed in master (splitSynopsisLabel is ignored if split is missing).

If no other issues are reported I will do a bugfix release tomorrow morning.

[remkop]

@deining picocli 4.3.1 has been released with this fix. Thanks again for raising this!