Most of these vim emulators are open source, so there's always the chance to just fix it and do a pull request. The main two vim emulators that I am using are:<p>- XVim for XCode<p>- Evil for Emacs<p>And both do a really good job. Evil beats XVim hands down, but XVim is a lot better than the others I tried: IdeaVim (for Intellij), Vrapper (Vim for Eclipse), and Vintage (Vim for Sublime). Out of these, vintage is by far the worst. I think it does more harm than good because the missing and wrongly implemented keys confuse me so much that I get worse at vimming. IdeaVim lacked a lot of the keys that I use regularly important (vi", va", vit, vat, etc), and Vrapper was kinda good but I think I couldn't map jj to <ESC>, but it's been some time since I had to use Eclipse.<p>I tried to fix IdeaVim, but I browsed the source for some time and couldn't really figure out what to do. However, I also enhanced my local XVim and Evil setups a bit by extending the code and it was a lot easier than with IdeaVim.<p>I've said this before, but with all these implementations, somebody should have written a "libVim" in lua, that can be embedded in almost any project, and can be hooked into the input stream, and then you'd just need to define a set of methods in your delegate textfield (or what it is) and the libVim will call these methods based on input (i.e. move cursor, insert text at position, change text at position, scroll up, scroll down). I don't think you'd need that many delegate methods since mostly it is writing to a text buffer.