title: Vim - Command Line - previous and next command key mapping
body: <p>When opening the command line and pressing the up arrow or down arrow keys, it shows the commands there were typed the last time. Is there a way to map this behaviour? For example when I press <code>ctrl p</code>, I want vim to show me my previous command (make vim act as if I pressed the up arrow). The same thing for <code>ctrl n</code> for the next command.</p>
  
  <p>How can I make this happen?</p>