Ah, you're right; thanks for clarifying!
sure i can make that work with tmux. codewise it would even be easier, but only if i can trust the user to put all the pieces together for themselves.
if i want to build an end-user friendly package, the whole thing suddenly becomes a lot more complex:
it's no longer enough to say: load this into vim and you are done, but i need to check that tmux is not only available but that the editor is running inside it as well. and i have to prepare that users will ask me to make this work with screen or any other tmux alternative.
greetings, eMBee.
The only thing that's bespoke to tmux is knowing which pane to target; you'd need to collect that from the user on the first run, or allow the value to be configured.