+ case 'l': if(!sscanf(arg, "%f", &opt_max_lead)) {
+ fprintf(stderr, "bad --max-lead (-l) value (must be a number)\n");
+ argp_state_help(state, stderr, ARGP_HELP_STD_HELP);
+ return EINVAL;
+ }
+ opt_max_lead *= XSIZE;
+ break;
+ case 'm': opt_music = 1; break;
+ case 's': opt_sound = 0; opt_music = 0; break;
+ default: return ARGP_ERR_UNKNOWN;