No error when parsing unknown arguments after verb

You can try this with your CLI program (replace `program.exe verb` as appropriate):

`program.exe verb unknownarg`

Replace unknownarg with any random inputs as long as they don't start with `-` and `Parser.Default.ParseArguments` will return `ParserResult.WithParsed`.

It doesn't matter what the value of `ParserSettings.IgnoreUnknownArguments` is.

I don't know if this is a bug or just hasn't been implemented but this is a fundamental problem with the built-in validation of this library.

Does anyone have any solutions to catch unknown args?

首先，透過 `Parser.Default.ParseArguments` 重現 `program.exe verb unknownarg`，並按照描述變更 `ParserSettings.IgnoreUnknownArguments`。追蹤 verb 和位置引數的剖析路徑；當未知引數能以符合預期驗證行為的方式一致地處理，且回報的案例由回歸測試涵蓋時，該 issue 即完成。

由索引模型根據 Issue 內容生成。