very double-width character support

wow
not many double-width support
![sscrot](https://f.cloud.github.com/assets/315139/1751278/20096fb6-65d9-11e3-8feb-8f8238c00026.png)

the pull request
very support now
wow
![sscrot](https://f.cloud.github.com/assets/315139/1751281/7822c51c-65d9-11e3-8e81-9355c8be7006.png)