Chris@1464: --- a.txt	2013-07-27 04:20:45.973229414 +0900
Chris@1464: +++ b.txt	2013-07-27 04:20:52.366228105 +0900
Chris@1464: @@ -1,3 +1,3 @@
Chris@1464:  aaaa
Chris@1464: -日本記
Chris@1464: +日本誘
Chris@1464:  bbbb