title: cygwin: vagrant ssh, empty command prompt
body: <p>If I <code>vagrant ssh</code> with windows cmd, I get a nice command prompt, like that:</p>
  
  <pre><code>vagrant@homestead:~$ echo foo
  vagrant@homestead:~$ foo
  </code></pre>
  
  <p>But with cygwin and mintty, I have no prompt at all: </p>
  
  <pre><code>echo foo
  foo
  </code></pre>
  
  <p>I see it has to do with "pseudo-tty allocation".</p>
  
  <p>With cygwin and mintty, I can have my prompt with this : </p>
  
  <pre><code>vagrant ssh -- -t -t
  </code></pre>
  
  <p>How can I change cygwin and mintty so that I don't have to tell the <code>-t</code> ?</p>
  
  <p>About the ssh -t option : </p>
  
  <p>"Force pseudo-tty allocation.  This can be used to execute arbi-
               trary screen-based programs on a remote machine, which can be
               very useful, e.g., when implementing menu services.  Multiple -t
               options force tty allocation, even if ssh has no local tty."</p>