title: WinMerge: how to ignore comments
body: <p>I'm using WinMerge to compare java files in folders (including subfolders).
  I would like to ignore comments when the comparison is done, but I don't know how to do it.</p>
  
  <p>At the file level I've found a switch in the option, so if I compare two files the comments are ignored. However if I compare the folders where those two files live WinMerge tells me that the files are different. Then when I click on the files WinMerge finds out that the only differences are comments and it tells me the files are equal.</p>
  
  <p>Any idea?</p>