rubinius/rapa — pull request #4 by IPGlider (2012-03-28 20:20:02+00:00)
Title: base64_decode must return an ASCII-8BIT String*

In Ruby 1.9.3

```ruby
1.9.3p125 :001 > "".unpack("m").first.encoding
=> #
1.9.3p125 :002 > "Ojs8PT4/QA==\n".unpack("m").first.encoding
=> #
```

Before patch in Rubinius

```ruby
rubinius-2.0.0dev :001 > "".unpack("m").first.encoding
=> #
rubinius-2.0.0dev :002 > "Ojs8PT4/QA==\n".unpack("m").first.encoding
=> #
```

After patch in Rubinius

```ruby
rbx-head :001 > "".unpack("m").first.encoding
=> #
rbx-head :002 > "Ojs8PT4/QA==\n".unpack("m").first.encoding
=> #
```