Ability to parse multiple flags in sequence

[blmoore]

Is there a good way to track the order in which options were provided across multiple flags? e.g. a way of implementing rsync style --exclude '*' --include '*.something' where args need to be processed in the order provided and we can't just stack all the excludes and includes as separate string slices

[jessevdk]

You can either use function types or a custom type that implements the Marshaler/Unmarshaler interfaces to process the provided arguments as you want (in order).