deprecated returning method usage

[Vladimir Chizhov]

Class TagList (method #from, line 87) uses deprecated rails-method 'returning':
http://guides.rubyonrails.org/2_3_release_notes.html#objecttap-backport

It causes a critical fail on rails-3.0.0rc/ruby-1.8.7-p299.

Possible solutions are:

1. Clear: use Object#tap method

def from(source)
    new.tap do |tag_list|
        case source
        ...

2. Dirty, but compatible with older versions of ruby and rails - to define own method returning (as a static in TagList):

def returning( obj )
    return obj unless block_given?
    if obj.respond_to? :tap
        obj.tap { |*x| yield( *x ) }
    else
        yield( obj )
        return obj
    end
end

(need to say, I don't like this way and I think something better exists, but this way works for me).

[Jonathan Viney]

Thanks. I've fixed the problem.