As an addendum, I would also take issue with your impression that Emacs is "obsolete and weird". While you may not find a lot of Emacs support or advice on the Vim mailing list, I'd argue that the two editors are at roughly the same level of obsolescence and weirdness, just in different ways. They are profoundly different in design philosophy, however, and many people do find that they personally prefer one over the other.
Perhaps you should just give Emacs a try, since it is certainly well known to have good support for interactive Lisp environments. It seems that you don't already have a significant investment of time using either editor, so why not just take the path of least resistance for your current task?
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