[Rails] Action 'display' doesn't work in 0.10.0

[han.holl at tietoenator.com]

Hello,

While trying to get a 0.8.5 rails application to run under 0.10.0, I 
discovered that an action called 'display' no longer worked. (As example it's 
still existant in ctionpack-1.5.0/README).
After a long search, I discovered that the reason is that 
ActionController::Base inherits from Object, and because there is 
Object#display it will no longer be called as an action. See 
ActionController::Base#hidden_actions.

This implies that there are a _lot_ of reserved words, you cannot use as 
action names: ActionController::Base.public_instance_methods. These reserved 
words. moreover, are not guaranteed to be stable: every time some module gets 
included in the inheritance chain, od some module gets extended, the list 
changes.

I don't think this behaviour is correct: in an OO environment I want to be 
able to override methods that are above me in the inheritance chain, not 
forbidden to use the same name.

Cheers,

Han Holl