Re: [PATCH 2/3] t/test-tool: handle -c <name>=<value> arguments

> Soon we're going to need to pass configuration values to a command in
> test-tool.
>
> Let's teach test-tool to take config values via command line arguments.
>
> Signed-off-by: Rubén Justo <rjusto@gmail.com>
> ---
>  t/helper/test-tool.c | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)

>
> diff --git a/t/helper/test-tool.c b/t/helper/test-tool.c
> index d9f57c20db..7eba4ec9ab 100644
> --- a/t/helper/test-tool.c
> +++ b/t/helper/test-tool.c
> @@ -3,9 +3,10 @@
>  #include "test-tool-utils.h"
>  #include "trace2.h"
>  #include "parse-options.h"
> +#include "config.h"
>  
>  static const char * const test_tool_usage[] = {
> -	"test-tool [-C <directory>] <command> [<arguments>...]]",
> +	"test-tool [-C <directory>] [-c <name>=<value>] <command> [<arguments>...]",
>  	NULL
>  };
>  
> @@ -106,6 +107,13 @@ static NORETURN void die_usage(void)
>  	exit(128);
>  }
>  
> +static int parse_config_option(const struct option *opt, const char *arg,
> +			       int unset)
> +{
> +	git_config_push_parameter(arg);
> +	return 0;
> +}
> +
>  int cmd_main(int argc, const char **argv)
>  {
>  	int i;
> @@ -113,6 +121,9 @@ int cmd_main(int argc, const char **argv)
>  	struct option options[] = {
>  		OPT_STRING('C', NULL, &working_directory, "directory",
>  			   "change the working directory"),
> +		OPT_CALLBACK('c', NULL, NULL, "<name>=<value>",
> +			   "pass a configuration parameter to the command",
> +			   parse_config_option),
>  		OPT_END()
>  	};