I think #2 is true. It's never any good. There are a lot of rudimentary "caveman completion" packages available for Ruby coding, but nobody has ever written a

I think #2 is true. It's never any good. There are a lot of rudimentary "caveman completion" packages available for Ruby coding, but nobody has ever written a good "intellisense" feature for Ruby, where "good" means something on the level of, say, Xcode's "CodeSense" auto-completion for Objective-C or Swift, or JetBrains IDEA's support for Java. I work in Xcode a lot, but I also maintain a couple Rails apps at work. A few times a year, I get so aggravated I spend an afternoon googling the state of the art in code completion for Ruby, and trying out various editors and IDEs. JetBrains RubyMine is consistently the best, but it is far, far inferior to Xcode in this regard. It suggests methods but not the one I am looking for, or it suggests inappropriate methods that would cause an error, etc. It can't always jump to the definition of something, or tell me all the places the method I am currently editing is called from. Xcode has a lot of things I could complain about, but the code completion, finding caller/callees, jump to definition/counterpart... all that stuff is incomparably better than it is for Ruby in any editor I have ever seen. And of course it is — it is incredibly hard and complicated to do a complete or even mostly-complete job of it with Ruby code. There are just too many ways to metaprogram and too little information available to the editor to make it a straightforward task.