[gary__]

Reminds me of this editor project from Kent Beck for working with the AST instead of with text alone when developing, somewhat related

https://www.facebook.com/notes/kent-beck/prune-a-code-editor...

[ekzy]

I do a bit of Clojure and it feels like manipulating an AST rather than text, especially with structural editing (because code is data). It applies to any Lisp I suppose