rb_enc_isctype 3617 string.c if (rb_enc_isctype(c, ONIGENC_CTYPE_DIGIT, enc)) rb_enc_isctype 3619 string.c else if (rb_enc_isctype(c, ONIGENC_CTYPE_ALPHA, enc)) rb_enc_isctype 3629 string.c if (rb_enc_isctype(c, ctype, enc)) rb_enc_isctype 3640 string.c if (!rb_enc_isctype(c, ctype, enc)) {