expand_string_with_args
static char *expand_string_with_args(const char *in, int argc, char *argv[]);
res = expand_string_with_args(v->value, argc, argv);
name = expand_string_with_args(new_argv[0], argc, argv);
new_argv[i] = expand_string_with_args(new_argv[i + 1],
return expand_string_with_args(in, 0, NULL);