Issues with sub options

[wadewegner]

I'm having an issue with the parser not figuring out my sub-options.

Here's the code in Main:

var invokedVerb = "";
var invokedVerbInstance = new object();

var options = new Options();
if (!CommandLine.Parser.Default.ParseArguments(args, options,
    (verb, subOptions) =>
    {
        // if parsing succeeds the verb name and correct instance
        // will be passed to onVerbCommand delegate (string,object)
        invokedVerb = verb;
        if (!string.IsNullOrEmpty(invokedVerb))
        invokedVerbInstance = subOptions;
    }))
{
    Environment.Exit(CommandLine.Parser.DefaultExitCodeFail);
}

This is pretty much right from the wiki.

My options are defined as this:

class Options
{
    public Options()
    {
        CpVerb = new CPSubOptions { };
    }

    [VerbOption("cp", HelpText = "Interact with cp.")]
    public CPSubOptions CpVerb { get; set; }

    [HelpVerbOption]
    public string GetUsage(string verb)
    {
        return HelpText.AutoBuild(this, verb);
    }
}

class CPSubOptions
{
    [Option('n', "name", HelpText = "Get details name.")]
    public string Name { get; set; }
}

When I run with cp as the args, it works and the parser determines that CPSubOptions is the subOptions and invokedVerbInstance is set appropriately.

However, when I run with cp --name blah or cp -n blah, the subOptions is null, so it's not parsed properly.

Any help?

[nemec]

What version are you using? Based on the stable branch, your sample code works perfectly (for me). Based on Master, it fails to compile since the library has gone through some major changes for 2.0.

[gsscoder]

📎 Please read: #250. Thanks for collaboration and patience! 😅
Giacomo
P.S.: valid only for me, if a main contrib. is available he's obviously free to support devs/users of the project.

[alexanderfast]

@wadewegner did you figure it out? I also tried your code and as @nemec I get the expected result; subOptions is not null and Name has a value.

[Jamby93]

Same issue here with an almost identical class configuration. subOptions passed to callback is null, although options.subOption is valid with correct values (options.CpVerb in your case).

[brandorf]

I'm seeing this as well with latest version from nuget.

[nemec]

@Jamby93 @brandorf latest stable or prerelease? I just tested again with 1.9.71 from NuGet, copy and pasting the above, and it works perfectly. VS 2015, .Net 4.5.2 in case you're running something different.

The exact code: https://gist.github.com/nemec/bc9d78e47d7a7d8a72a9711488b3bfef