http://www.intellij.net/tracker/idea/viewSCR?publicId=15824
When you're looking for duplication between 2 classes, that you're trying to merge, it would be useful if /diff/ had options to ignore :
(the easy part)
1/ comments differences
2/ import differences
(the less easy)
3/ simple expressions form differences
ex:
name = "John" + " " + "Doe";
equals
name = "John Doe";
nofSeconds = 3600 ;
equals
nofSeconds = 60 * 60 ;
we could much further, but this would be a nice start.