internal/bufio/bufio.go
func (w *Writer) WriteB(b byte) { // WriteB as sig differs from WriteByte (vet issues)
	if w.err != nil {
		return
	}
	w.wr.WriteByte(b)
}
func (w *Writer) WriteB(b byte) { // WriteB as sig differs from WriteByte (vet issues)
	if w.err != nil {
		return
	}
	w.wr.WriteByte(b)
}
// WriteB writes a byte.