Re: [PATCH 6/8] builtin/config: introduce subcommands

> @@ -910,6 +930,20 @@ int cmd_config(int argc, const char **argv, const char *prefix)
>  {
>  	given_config_source.file = xstrdup_or_null(getenv(CONFIG_ENVIRONMENT));
>
> +	/*
> +	 * This is somewhat hacky: we first parse the command line while
> +	 * keeping all args intact in order to determine whether a subcommand
> +	 * has been specified. If so, we re-parse it a second time, but this
> +	 * time we drop KEEP_ARGV0. This is so that we don't munge the command
> +	 * line in case no subcommand was given, which would otherwise confuse
> +	 * us when parsing the implicit modes.
> +	 */
> +	argc = parse_options(argc, argv, prefix, builtin_subcommand_options, builtin_config_usage,
> +			     PARSE_OPT_SUBCOMMAND_OPTIONAL|PARSE_OPT_KEEP_ARGV0|PARSE_OPT_KEEP_UNKNOWN_OPT);
> +	if (subcommand)
> +		argc = parse_options(argc, argv, prefix, builtin_subcommand_options, builtin_config_usage,
> +				     PARSE_OPT_SUBCOMMAND_OPTIONAL|PARSE_OPT_KEEP_UNKNOWN_OPT);
> +