Lisp is the only language I've seen where it's idiomatic to have some locals scoped to the *middle* of a function. It's a consequence of let blocks.
It's neat, but I rarely miss it elsewhere. I'm happy with "scoped from here to the end of the block" in e.g. C or Rust.
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I've been learning some Common Lisp by writing some simple JSON munging programs. I'm sure it's not best practice — I should probably deserialise to CLOS automatically — but it's a nice way to get comfortable with the basics.
It feels weird deliberately ignoring helpers though.
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I've released difftastic 0.65! Highlights of this release:
* Better parsing of Clojure, Common Lisp, Kotlin, Rust and Zig.
* Quality of life improvements for binary files.
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I've seen "cons cells" and "cons pairs", but today I saw "conses", which is new to me.
(Clearly Lisp has no downsides, only pros and cons! 🙃)