Non-generic GetValueForOption does not work with boolean flag

[einarmo]

Reproduction:

var opt = new Option<bool>(new[] { "-b" }, "Some description");

var cmd = new RootCommand
{
    opt
};

var res = cmd.Parse("-b");
Assert.True((bool)res.GetValueForOption((Option)opt));

It works if you pass "true", e.g. -b true, or if you use the generic method directly.

I ended up adding this code to work around the issue:

// Here I only know that opt is some Option<>

if (opt.GetType() == typeof(Option<>).MakeGenericType(typeof(bool)))
{
    res = bindingContext.ParseResult.GetValueForOption((Option<bool>)opt);
}

[shaggygi]

@jonsequitur Had a related question on GetValueForOption...

I have UseExceptionHandler setup to try and catch random errors.

What is need to search for a particular global option and get its value when an exception hits? I've tried a few things, but keeps returning nulls.

Parser parser = new CommandLineBuilder(new MyRootCommand())
    .UseDefaults()
    .UseExceptionHandler((exception, context) => {

    // Need to check and get a value for an optional global option here.
}

Any help is appreciated.

[jonsequitur]

You should be able to use context.ParseResult.GetValueForOption(theOption).

[shaggygi]

@jonsequitur Okay. I see what I was doing wrong. As usual, I truly appreciate your help (and this API 😄). Thx