cont_handler
(void) signal(sig_number, cont_handler);
if (signal(SIGCONT, cont_handler) == SIG_ERR)
(void) signal(sig_number, cont_handler);
void cont_handler(int sig_number);
if (signal(SIGCONT, cont_handler) == SIG_ERR)
if (signal(SIGCONT, cont_handler) == SIG_ERR) {
if (signal(SIGCONT, cont_handler) == SIG_ERR)
void (*cont_handler)(int), void (*size_handler)(int))
if(gl_set_tty_signal(sig->signo, cont_handler))
void (*cont_handler)(int), void (*size_handler)(int));