Behaviour of Command.Proxy and forwarding arguments

[njmaeff]

I am looking for a way to forward arguments to another command and only arguments that do not exist already on the defined command. Currently proxy will forward all arguments passed into the command and will not register flags passed into the command. Is this the expected behavour of Proxy? Is there another way for this to work? In the below example, the assertion is what I am looking for. This test will fail.

it(`proxy behaviour`, async () => {
    const output = await runCli(() => {
        class CommandA extends Command {
            @Command.Boolean('-a')
            a = false
            @Command.Proxy()
            args: string[] = []

            @Command.Path('p1')
            async execute() {
                log(this, ['a', 'args'])
            }
        }

        return [
            CommandA,
        ];
    }, [
        "p1", "-a", "-b", "positionalArg"
    ]);

    expect(output).to.equal(
        [
            `Running CommandA`,
            `true`,
            `["-b","positionalArg"]\n`
        ].join('\n')
    );
})

[arcanis]

You need to pass the non-proxy options before the last static path component (ie -a p1 -b positionalArgs), otherwise the expected behavior becomes ambiguous and Clipanion resolves it by forwarding the argument.