_CurrentRuneLocale
return _CurrentRuneLocale() == _Utf8RuneLocale ?
_RuneLocale *rl = _CurrentRuneLocale();
_RuneLocale *rl = _CurrentRuneLocale();
return (_towctrans(c, _wctrans_upper(_CurrentRuneLocale())));
return (_towctrans(c, _wctrans_lower(_CurrentRuneLocale())));
s = _CurrentRuneLocale()->rl_codeset;
_RuneLocale *_CurrentRuneLocale(void);