Index: subversion_adapter.rb
===================================================================
--- subversion_adapter.rb	(revision 32470)
+++ subversion_adapter.rb	(working copy)
@@ -205,7 +205,7 @@
 
           identifier_to = (identifier_to and identifier_to.to_i > 0) ? identifier_to.to_i : (identifier_from.to_i - 1)
 
-          cmd = "#{self.class.sq_bin} diff -r "
+          cmd = "#{self.class.sq_bin} diff --diff-cmd=diff -x -U100 -r "
           cmd << "#{identifier_to}:"
           cmd << "#{identifier_from}"
           cmd << " #{target(path)}@#{identifier_from}"