I'm a little confused about whether this is a good idea. I'm trying to think of any precedent for plugins working this way — or any commands in vim for that matter. This would be easy to write a macro for or create your own bindings, but I'm not sure it belongs in the core. Can you point out any other plugins that work this way? It just seems counter intuitive and a bit unorthodox. I'm happy to be proven wrong, but before including this I'd like to be convinced it's something that other users would expect to find and use this way.