title: How to write buffer content to stdout?
body: <p>Is there any chance to write the content of the current vim buffer to stdout?</p>
  
  <p>I'd like to use vim to edit content that was passed via stdin - without the need of a temporary file to retrieve the modified content (on Linux/Unix).</p>
  
  <p>Is it possible that a plugin/script - that act on quit or save put the buffer content to stdout?</p>