Parses command-line options which may appear in positive and negative forms, such as “--verbose” and “--quiet”. This class provides internal support for creating parsers to handle such options. It cannot be instantiated.
abstract primary open
| negative-long-options: | An instance of <list>. Specifies the negative long options handled by this parser, represented as strings. Defaults to #(). |
| negative-short-options: | An instance of <list>. Specifies the negative short options handled by this parser, represented as strings. Defaults to #(). |
| long-options: | An instance of <list>. Specifies the long options handled by this parser, represented as strings. Defaults to #(). |
| short-options: | An instance of <list>. Specifies the short options handled by this parser, represented as strings. Defaults to #(). |
| description: | An instance of <string>. A description of the options handled by this parser. Defaults to “”. |