Fowardable and ActiveSupport clash in Rails 4.2

[Detlef_R]

Hello All

I have come across a problem, documented in the links below, when
extending
Fowardable in an app I am porting to Rails 4.2.1.

Any class that extends Forwardable (which used to work) now gives this
error:

ArgumentError: wrong number of arguments calling instance_delegate (2
for
1)
extended at
/Users/steve/.rvm/gems/jruby-1.7.13/gems/activemodel-4.2.1/lib/active_model/naming.rb:220
extend at org/jruby/RubyKernel.java:2200

The links have some suggestions which work in most cases. But I’m
surprised
there would be a conflict between those classes, both are in Rails core
right? Am I the only person seeing this?

[JRO] the Forwardable module + Rails 4.2. No good

Error running with Rails 4.2.0beta4

Thanks in advance for any help.

Steve