rails/rails — pull request #4289 by rafaelfranca (2012-01-04 06:06:42+00:00)
Title: No need of html_safe here

tag helper always return a html safe string and concat two html safe strings always return a html safe string

```ruby
>> a = "a".html_safe
=> "a"
>> b = "b".html_safe
=> "b"
>> a.html_safe?
=> true
>> b.html_safe?
=> true
>> ab = a+b
=> "ab"
>> ab.html_safe?
=> true
```