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boot.janet breakage
$ janet
Janet 1.41.3-dev-8f446736 linux/x64/gcc - '(doc)' for help
repl:1:> (tabseq [i :in [:a :b]] i i)
@{:a :a :b :b}
repl:2:> (defn loop [&] nil)
<function loop>
repl:3:> (tabseq [i :in [:a :b]] i i)
repl:3:9: compile error: unknown symbol i
# reference: https://ianthehenry.com/posts/janet-game/the-problem-with-macros/
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