FD_CLR            623 lib/tty/key.c          FD_CLR (p->fd, select_set);
FD_CLR           1709 lib/tty/key.c                      FD_CLR (mouse_fd, &select_set);
FD_CLR           1970 lib/tty/key.c                          FD_CLR (mouse_fd, &select_set);
FD_CLR           2062 lib/tty/key.c                              FD_CLR (mouse_fd, &select_set);
FD_CLR           2074 lib/tty/key.c                          FD_CLR (mouse_fd, &select_set);