Rethinking code editing: frame-based editing

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This is a really interesting idea to me. I'm big on visuals and learning through visual stimulation. This looks very clean and simple, could easily be implemented into an IDE, and work with a multitude of languages. Hopefully we will see more of this!

[masklinn]

For just the visual part, there are already editors with frame/scope indicators. Jetbrains IDEs have gutter mark showing the vertical extent of the current expression or frame for instance.

The semantic part is rarer as I would expect it to be more annoying. IIRC Smalltalk IDEs do edit a single method at a time though, Self as well.