Return a '{cmd: {opt:val}}' map of all command-line options

        Option names are all long, but do not include the leading '--', and
        contain dashes rather than underscores.  If the option doesn't take
        an argument (e.g. '--quiet'), the 'val' is 'None'.

        Note that options provided by config files are intentionally excluded.

def get_cmdline_options(self):
        """Return a '{cmd: {opt:val}}' map of all command-line options

        Option names are all long, but do not include the leading '--', and
        contain dashes rather than underscores.  If the option doesn't take
        an argument (e.g. '--quiet'), the 'val' is 'None'.

        Note that options provided by config files are intentionally excluded.
        """

        d = {}

        for cmd, opts in self.command_options.items():

            for opt, (src, val) in opts.items():

                if src != "command line":
                    continue

                opt = opt.replace('_', '-')

                if val == 0:
                    cmdobj = self.get_command_obj(cmd)
                    neg_opt = self.negative_opt.copy()
                    neg_opt.update(getattr(cmdobj, 'negative_opt', {}))
                    for neg, pos in neg_opt.items():
                        if pos == opt:
                            opt = neg
                            val = None
                            break
                    else:
                        raise AssertionError("Shouldn't be able to get here")

                elif val == 1:
                    val = None

                d.setdefault(cmd, {})[opt] = val

        return d