My favorite programming language is Common Lisp. My favorite text editor is vim. I have no cognitive dissonance about this. More to the point, the extensibilit

My favorite programming language is Common Lisp. My favorite text editor is vim. I have no cognitive dissonance about this. More to the point, the extensibility of an editor and the core editing functionality are orthogonal. As they say, "Emacs is a great operating system--all it needs is a decent text editor."