Make invisible-character Invisible

- Invisible-character wasn’t invisible, that’s now fixed.

Before
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![before](https://f.cloud.github.com/assets/4571498/2330751/c0b82d94-a43b-11e3-95c4-f21624801d61.png)

After
====
![after](https://f.cloud.github.com/assets/4571498/2330752/c0c19c08-a43b-11e3-8b8d-638199532aea.png)