SIGQUIT 51 editor.c sigchain_push(SIGQUIT, SIG_IGN); SIGQUIT 55 editor.c sigchain_pop(SIGQUIT); SIGQUIT 56 editor.c if (sig == SIGINT || sig == SIGQUIT) SIGQUIT 248 run-command.c if (code != SIGINT && code != SIGQUIT) SIGQUIT 50 sigchain.c sigchain_push(SIGQUIT, f);