# File lib/grit/repo.rb, line 499
    def diff(a, b, *paths)
      diff = self.git.native('diff', {}, a, b, '--', *paths)

      if diff =~ /diff --git a/
        diff = diff.sub(/.*?(diff --git a)/m, '\1')
      else
        diff = ''
      end
      Diff.list_from_string(self, diff)
    end