# File lib/diff/lcs/change.rb, line 149
149:   def self.simplify(event)
150:     ea = event.to_a
151: 
152:     case ea[0]
153:     when '-'
154:       ea[2][1] = nil
155:     when '<'
156:       ea[0] = '-'
157:       ea[2][1] = nil
158:     when '+'
159:       ea[1][1] = nil
160:     when '>'
161:       ea[0] = '+'
162:       ea[1][1] = nil
163:     end
164: 
165:     Diff::LCS::ContextChange.from_a(ea)
166:   end