iswctype
#define iswblank(c) iswctype((c), _ISBLANK)
if (csc->csc_invert ^ (iswctype(ch, csc->csc_type) != 0))
if (LINE_CONT && iswctype(last, blank)) {
if (inquote || escape || ZERO || !iswctype(c, blank)) {
extern int iswctype(wint_t, wctype_t);
extern int iswctype(wint_t, wctype_t);
using std::iswctype;
using std::iswctype;
if (iswctype(k.w_wc, cc.w_wc))
if (iswctype(i, wct))
if (iswctype(ch, cs->types[i]))
extern int iswctype(wint_t wc, wctype_t desc);
if (!iswctype(*wc, class))\