overwrite_all
(uO.overwrite_all ? OVERWRT_ALWAYS : OVERWRT_QUERY));
uO.overwrite_all = MAX(uO.overwrite_all-negative,0);
++uO.overwrite_all;
if (uO.overwrite_all && uO.overwrite_none) {
uO.overwrite_all = FALSE;
int overwrite_all; /* -o: OK to overwrite files without prompting */