def autocomplete(self):
        """
        Output completion suggestions for BASH.

        The output of this function is passed to BASH's `COMREPLY` variable and
        treated as completion suggestions. `COMREPLY` expects a space
        separated string as the result.

        The `COMP_WORDS` and `COMP_CWORD` BASH environment variables are used
        to get information about the cli input. Please refer to the BASH
        man-page for more information about this variables.

        Subcommand options are saved as pairs. A pair consists of
        the long option string (e.g. '--exclude') and a boolean
        value indicating if the option requires arguments. When printing to
        stdout, a equal sign is appended to options which require arguments.

        Note: If debugging this function, it is recommended to write the debug
        output in a separate file. Otherwise the debug output will be treated
        and formatted as potential completion suggestions.
        """
        # Don't complete if user hasn't sourced bash_completion file.
        if not os.environ.has_key('DJANGO_AUTO_COMPLETE'):
            return

        cwords = os.environ['COMP_WORDS'].split()[1:]
        cword = int(os.environ['COMP_CWORD'])

        try:
            curr = cwords[cword-1]
        except __HOLE__:
            curr = ''

        subcommands = get_commands().keys() + ['help']
        options = [('--help', None)]

        # subcommand
        if cword == 1:
            print ' '.join(sorted(filter(lambda x: x.startswith(curr), subcommands)))
        # subcommand options
        # special case: the 'help' subcommand has no options
        elif cwords[0] in subcommands and cwords[0] != 'help':
            subcommand_cls = self.fetch_command(cwords[0])
            # special case: 'runfcgi' stores additional options as
            # 'key=value' pairs
            if cwords[0] == 'runfcgi':
                from django.core.servers.fastcgi import FASTCGI_OPTIONS
                options += [(k, 1) for k in FASTCGI_OPTIONS]
            # special case: add the names of installed apps to options
            elif cwords[0] in ('dumpdata', 'reset', 'sql', 'sqlall',
                               'sqlclear', 'sqlcustom', 'sqlindexes',
                               'sqlreset', 'sqlsequencereset', 'test'):
                try:
                    from django.conf import settings
                    # Get the last part of the dotted path as the app name.
                    options += [(a.split('.')[-1], 0) for a in settings.INSTALLED_APPS]
                except ImportError:
                    # Fail silently if DJANGO_SETTINGS_MODULE isn't set. The
                    # user will find out once they execute the command.
                    pass
            options += [(s_opt.get_opt_string(), s_opt.nargs) for s_opt in
                        subcommand_cls.option_list]
            # filter out previously specified options from available options
            prev_opts = [x.split('=')[0] for x in cwords[1:cword-1]]
            options = filter(lambda (x, v): x not in prev_opts, options)

            # filter options by current input
            options = sorted([(k, v) for k, v in options if k.startswith(curr)])
            for option in options:
                opt_label = option[0]
                # append '=' to options which require args
                if option[1]:
                    opt_label += '='
                print opt_label
        sys.exit(1)
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/core/management/__init__.py/ManagementUtility.autocomplete