<=> (Diff::LCS::ContextChange)

         # File lib/diff/lcs/change.rb, line 116
    116:   def <=>(other)
    117:     r = @action <=> other.action
    118:     r = @old_position <=> other.old_position if r.zero?
    119:     r = @new_position <=> other.new_position if r.zero?
    120:     r = @old_element <=> other.old_element if r.zero?
    121:     r = @new_element <=> other.new_element if r.zero?
    122:     r
    123:   end