ONIGENC_IS_ASCII_CODE_CTYPE  311 enc/emacs_mule.c     return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
ONIGENC_IS_ASCII_CODE_CTYPE  304 enc/euc_jp.c         return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
ONIGENC_IS_ASCII_CODE_CTYPE  220 enc/shift_jis.c     return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
ONIGENC_IS_ASCII_CODE_CTYPE  313 enc/shift_jis.c       return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
ONIGENC_IS_ASCII_CODE_CTYPE 1406 encoding.c         (rb_isascii(c) && ONIGENC_IS_ASCII_CODE_CTYPE((c), ctype))
ONIGENC_IS_ASCII_CODE_CTYPE  665 regenc.c           return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
ONIGENC_IS_ASCII_CODE_CTYPE  825 regenc.c           return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
ONIGENC_IS_ASCII_CODE_CTYPE  840 regenc.c           return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
ONIGENC_IS_ASCII_CODE_CTYPE  182 regenc.h        (ONIGENC_IS_ASCII_CODE_CTYPE(code, ONIGENC_CTYPE_UPPER) ||\
ONIGENC_IS_ASCII_CODE_CTYPE  183 regenc.h         ONIGENC_IS_ASCII_CODE_CTYPE(code, ONIGENC_CTYPE_LOWER))