rb_enc_isprint    331 re.c                   else if (c != '/' && rb_enc_isprint(c, enc)) {
rb_enc_isprint    363 re.c           	    else if (rb_enc_isprint(c, enc)) {
rb_enc_isprint    489 sprintf.c      	    if (rb_enc_isprint(*p, enc))
rb_enc_isprint   4075 string.c       	else if (rb_enc_isprint(c, enc)) {
rb_enc_isprint   6845 string.c       	if (!rb_enc_isprint(c, enc)) return Qfalse;