Autocompletion doesn't display completion candidates on exact match

[rsenden]

Given a subcommand structure like the following:

• mycmd
  • abc
  • abcdef
    - sub1
    - sub2

There are two issues with the autocompletion script generated by picocli v4.6.2:

• mycmd abc<TAB><TAB> doesn't display any completion candidates
  • Expected: Display completion candidates: abc and abcdef
• mycmd abcdef<TAB><TAB> doesn't display any completion candidates
  • Expected: Insert a space and display completion candidates sub1 and sub2

I've had a look at the generated completion script, but given my limited experience with autocomplete scripts I'm not sure how this can be fixed.

[remkop]

Thank you for raising this! This is now fixed in master and will be included in the next release.

The cause was that on mycmd abc<TAB><TAB>, the completion script jumps to the _picocli_mycmd_abc function, whereas the desired completion behaviour comes from invoking the _picocli_mycmd function. I updated the autocompletion generator to cater for this special case of an exact match.

Thanks for the example, it was very useful. For reference, I used the following program to match your use case:

@Command(name = "mycmd", mixinStandardHelpOptions = true,
    subcommands = {
        Issue1468.Abc.class,
        Issue1468.Abcdef.class,
        AutoComplete.GenerateCompletion.class})
public class Issue1468 {
    @Command(name = "abc", mixinStandardHelpOptions = true)
    static class Abc {}

    @Command(name = "abcdef", mixinStandardHelpOptions = true)
    static class Abcdef {

        @Command(mixinStandardHelpOptions = true)
        void sub1() {}

        @Command
        void sub2() {}
    }

    public static void main(String[] args) {
        new CommandLine(new Issue1468()).execute("generate-completion");
    }
}