bufio.Scanner的无序输出

Question

I use golang to receive mtr info and after some work send it to os.stdout However the output is in unordered. the code below

scanner := bufio.NewScanner(os.Stdin)
    for scanner.Scan() {
        input := scanner.Text()
        fmt.Println(input)
    }

The right order looks like this

image description here

And this is the output from the code above:

image description here

Answer 1

The mtr program is using special terminal escape sequences to redrawn the lines it has written. It's output is not in order.

That is why you fail.