Fix url function

Duplicated and wrongly colorized.

Before:
![before](https://cloud.githubusercontent.com/assets/1958425/5328540/4652806c-7d7b-11e4-8299-34023947927f.png)

After:
![after](https://cloud.githubusercontent.com/assets/1958425/5328542/4de44c5c-7d7b-11e4-8fda-92665a561836.png)