Autocomplete plugin with Rails 2.0

I tried out adding the exclude line:

    protect_from_forgery :only => [:tag]

However, it seems ugly that I have to add each method manually. I
tried

    protect_from_forgery :exclude => [:auto_complete_for_tag_name]

but that didn't work. Is this oddness a) a bug or b) just something
the docs for the plugin should discuss?