[Design] Do we retain current -- behavior (.NET CLI may be nonstandard)?

[KathleenDollard]

No description provided.

[PonchoPowers]

Please retain, see #2433 for why it is required.

[jonsequitur]

The System.CommandLine behavior (which matches POSIX expectations) is different from the .NET CLI behavior (which is nonstandard).

[baronfel]

I don't think we've raised an issue about the -- behavior of the .NET CLI yet - do either of you (@jonsequitur / @KathleenDollard) have a quick version I could use as the basis for one?

[PonchoPowers]

The System.CommandLine behavior (which matches POSIX expectations) is different from the .NET CLI behavior (which is nonstandard).

Surely then the standardised approach should be the one that is supported, which is how System.CommandLine behaves currently.

It might be wise to add a CliConfigurationOption to specify whether to use the standard, or non-standard version?