rails/rails — pull request #12124 by kennyj (2013-09-03 16:38:27+00:00)
Title: Closes #12115. Fix `simple_format` with sanitizing option when the text contains single line feed.

If we call `simple_format` method with sanitizing option, a single line feed (\n) is replaced with unexpected characters .

```
<br />
```
I think we should backport to 4-0-stable.