# File lib/diff/lcs/block.rb, line 39 39: def op 40: case [@remove.empty?, @insert.empty?] 41: when [false, false] 42: '!' 43: when [false, true] 44: '-' 45: when [true, false] 46: '+' 47: else # [true, true] 48: '^' 49: end 50: end