argMap is option -> argument (or "" if it is a unary argument) residualArgs are what is left after removing the options and their args.
argMap is option -> argument (or "" if it is a unary argument) residualArgs are what is left after removing the options and their args.
argMap is option -> argument (or "" if it is a unary argument) residualArgs are what is left after removing the options and their args.
argMap is option -> argument (or "" if it is a unary argument) residualArgs are what is left after removing the options and their args.
(Since version 2.10.0) Use leftOfArrow instead
(Since version 2.10.0) Use resultOfEnsuring instead
Configurability simplicity achieved by turning defs into vars and letting the spec creator apply a transformation. This way there's no need to create custom subclasses of CommandLine.