* @param {OptionDefinitions} - Definitions array * @param {object} [options] - Options * @param {string[]} [options.argv] - Overrides `process.a

* Expand a combined short option. * @param {string} - the string to expand, e.g. `-ab` * @returns {string[]} * @static

* expand getopt-style combinedShort options.

* expand ``--option=value` style args.

* Get definition by option arg (e.g. `--one` or `-o`) * @param {string} * @returns {Definition}

* Returns the name from a long, short or `--options=value` arg. * @param {string} - the arg to inspect, e.g. `--one` * @returns {string} * @static