[Jtsummers]

Yeah, s-exprs don't break down by lines very well, but they are easy-ish to work with in a structured format, similar to HTML/XML editors since the delineation between elements is usually very clear. The only problem with lisps would be when macros are involved where there is more fluidity in the structure. But something like this:

  (defun double-all-the-things (things)
    (mapcar (lambda (x) (* 2 x)) things))

would be straightforward to navigate through with an s-expr aware editor.