As people mentioned here Rubymine closed the gap, autocomplete works as well as a java ide 95% of the time it's almost a non issue. Yes for meta programming it

As people mentioned here Rubymine closed the gap, autocomplete works as well as a java ide 95% of the time it's almost a non issue. Yes for meta programming it won't work as well but A) it's rare B) Rubymine might solve that as well at some point (for example clicking on a meta programmed method will lead you to the method that created the method, with good enough documentation it's all you need).