BIO_f_linebuffer
b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
b = BIO_push(BIO_new(BIO_f_linebuffer()), b);
const BIO_METHOD *BIO_f_linebuffer(void);
bio_out = BIO_push(BIO_new(BIO_f_linebuffer()), bio_out);
bio_err = BIO_push(BIO_new(BIO_f_linebuffer()), bio_err);
tap_out = BIO_push(BIO_new(BIO_f_linebuffer()), tap_out);
tap_err = BIO_push(BIO_new(BIO_f_linebuffer()), tap_err);