OptEnvConf.Args

An abstraction over '[String]' that makes it easier to implement consumeArgument, consumeOption and consumeSwitch.

In order to implement folded short dashed options, we need to use tombstones for consumed argumentsn

Empty list of arguments

Create Args with all-live arguments and cursor at the start.

Consume a single positional argument.

The result are all possible results

Consume an option.

This supports:

• ["-f", "foo"]

• ["--foo", "foo"]

• ["-df", "foo"]

• ["--foo=foo"]

• ["-ffoo"]

Consume a switch.

This supports:

• ["-f"]

• ["--foo"]

• ["-df"]