No error message about invalid arguments when providing --help

[Garados007]

If the user specifies invalid arguments and --help, CLI11 produces only a help message and no error message. I would expect an error message and then the help. Just like this:

$ git push --help --invalidasdasdasd
error: unknown option `invalidasdasdasd'
usage: git help [-a|--all] [--[no-]verbose] [--[no-]external-commands] [--[no-]aliases]
... more of help ...

Is there an option to enable this?

[phlptp]

In the current error handling mechanism help takes precedence. Not doing it this way would cause all sorts of other problems. We are starting to explore potential options to move away from exceptions in the error handling which potentially could enable something like this. See #984