gistfile1.m

- (void)initWithName {
  if (self = [super initWithDifferentName]) {
    // Bla..
  }
}

class MyClass < ObjCClass
  def initWithName
    super.initWithDifferentName()
      # do something
    self
  end
end

That what I thought too but this throws the following error:

Terminating app due to uncaught exception 'NoMethodError', reason: 'app_delegate.rb:11:
in `initWithFancyName': super: no superclass method `initWithFancyName' for 
#<SubClass:0x8ba1aa0> (NoMethodError)

Here is the sample project: http://cl.ly/Gt1q

class MyClass < ObjCClass
  def initWithName
    initWithDifferentName()
     # do something
    self
  end
end

this should work, if you didn’t redefined initWithDifferentName() in our subclass, super will be called,
if you override the initWithDifferentName() method you will need to call super

class MyClass < ObjCClass
  def initWithName
    initWithDifferentName()
     # do something
    self
  end
  def initWithDifferentName()
     super
     # do something else
   end
end

I think I got it, it's even easier than I thought:

class SubClass < NSObject
  def initWithName
    init

    # do something

    self
  end 
end

Thank you :)