[pxndx]

Most of the ambiguity would be solved if you wrote an ast tree directly, like in scratch (or even lisp).

[externalreality]

https://www.reddit.com/r/haskell/comments/ngn2c/a_concept_fo...

I would still consider the link above editing text... but I posted it anyway for what it is worth.

The idea seems to be to confine the text to its AST in a form like fashion.

[icebraining]

There's no such thing as writing a conceptual entity like an AST "directly", you always have to use the mediation of some UI, be it text or a GUI. And you can definitively have ambiguous GUIs.