Hi,

On Sat, Jun 21, 2025 at 12:46:34AM -0400, Ted Unangst wrote:
> @@ -216,19 +232,19 @@ main(int argc, char *argv[])
>  	signal_set(&ev_sighup, SIGHUP, on_signal, NULL);
>  	signal_set(&ev_sigterm, SIGTERM, on_signal, NULL);
>  	signal_set(&ev_sigwinch, SIGWINCH, on_signal, NULL);
> +	signal_set(&ev_sigchild, SIGCHLD, on_sigchild, NULL);
>  	signal_add(&ev_sigint, NULL);
>  	signal_add(&ev_sighup, NULL);
>  	signal_add(&ev_sigterm, NULL);
>  	signal_add(&ev_sigwinch, NULL);
> +	signal_add(&ev_sigchild, NULL);
>  
>  	event_set(&ev_stdin, STDIN_FILENO, EV_READ | EV_PERSIST, input, NULL);
>  	event_add(&ev_stdin, NULL);
>  	evtimer_set(&ev_timer, timer, NULL);
> -	evtimer_add(&ev_timer, &opt_interval.tv);
>  
>  	cur_buf = &buf0; prev_buf = &buf1;
> -	read_result(cur_buf);
> -	display(cur_buf, prev_buf, highlight_mode);
> +	start_child();

I think it may be better to _not_ remove this call to display(), so that
the 'title bar' immediately is displayed while the program waits for the
first line of output emitted by the child.

other than that, OK job@