NVolCaseSensitive
if (NVolCaseSensitive(dir_ni->vol)) {
&& NVolCaseSensitive(ni->vol)))
case_sensitivity = (NVolCaseSensitive(vol) ? CASE_SENSITIVE : IGNORE_CASE);
if (!NVolCaseSensitive(dir_ni->vol)) {
if (!NVolCaseSensitive(dir_ni->vol)) {
if (NVolCaseSensitive(vol) || !vol->locase) {