rails/rails — pull request #7342 by sobrinho (2012-08-12 20:47:02+00:00)
Title: Accept a symbol for `:in` option on inclusion and exclusion validators

I'm not sure about my english on documentation but the feature is fine :)

I was in doubt about this line:

``` ruby
unless [:include?, :call].any?{ |method| delimiter.respond_to?(method) } || delimiter.is_a?(Symbol)
```

It may be more clear about what is happening, but this is not a big deal:

``` ruby
unless delimiter.respond_to?(:include?) || delimiter.respond_to?(:call) || delimiter.is_a?(Symbol)
```

What do you think?