_C_CTYPE_LOWER_N  138 maint/gnulib/lib/c-ctype.h #define _C_CTYPE_LOWER _C_CTYPE_LOWER_N (0)
_C_CTYPE_LOWER_N  148 maint/gnulib/lib/c-ctype.h #define _C_CTYPE_UPPER _C_CTYPE_LOWER_N ('A' - 'a')