Test for http://bugzilla.opendarwin.org/show_bug.cgi?id=7216 white-space: pre-wrap collapses leading whitespace following a newline.

Here bar should be right under foo:

foo      bar

Here bar should be on the right hand side of the second line:

foo
   bar

foo    
   bar

foo
   bar

foo 
   bar

foo  
   bar

foo   
   bar

foo    
   bar

Here bar should be on the right hand side of the third line:

foo

   bar

foo baz
   bar