Paxedit is a nifty Emacs project that goes beyond paredit: https://github.com/promethial/paxedit/blob/master/readme.org
It understands e.g. (setf x 1 y 2), where you want to transpose pairs of expressions. It's also smart enough to allow you to operate on the sexp containing point, without you needing to move!
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If you created a large, successful OSS project, would you want to be BDFL or move on after a period?
I see tradeoffs on both sides, although it's not a decision I've needed to make myself.
Today I learnt that Emacs 28 shipped a context-menu-mode! https://oylenshpeegul.gitlab.io/blog/posts/20230129/
This seems quintessentially Emacs: deeply hackable, but building UI features in an order very different to the mainstream.
Today I learnt that `cargo fix` won't fix code with compiler errors by default, but you can override this!
$ cargo fix --broken-code --allow-dirty && cargo clippy --fix --allow-dirty
This incantation does exactly what I wanted :)