Question regarding readf

[Andre Pany via Digitalmars-d-learn]

Hi,

following the example from http://ddili.org/ders/d.en/input.html,
I try to read a value from console on windows (powershell and dos 
console).

The code from the example does not work,
writeln is never executed.

import std;

void main()
{
        while(true)
        {
                string name;
                readf("%s", name);
                writeln(name);
        }
}

also this doesn't work:
readf(" %s", name);

It only works while changing the line to:
readf("%s\n", name);

I wonder why the example from Ali is invalid. Did the behavior 
changed in the past?

Kind regards
André