FD_CLR            620 lib/tty/key.c          FD_CLR (p->fd, select_set);
FD_CLR           1685 lib/tty/key.c                      FD_CLR (mouse_fd, &select_set);
FD_CLR           1932 lib/tty/key.c                          FD_CLR (mouse_fd, &select_set);
FD_CLR           2024 lib/tty/key.c                              FD_CLR (mouse_fd, &select_set);
FD_CLR           2036 lib/tty/key.c                          FD_CLR (mouse_fd, &select_set);