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try...catch can't recur a loop #522

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@brycecovert

I ran into a situation like this whilst playing around with pixie magic:

(loop [x 1]
  (try
    (recur (inc x))
    (catch ex (println ex))))


RuntimeException: :pixie.stdlib/AssertionException Recur must have same number of forms as matching loop

This lead me to discover that the cause was that try wraps the body in a function, telling the vm to invoke it. Perhaps this is just an implicit limitation, in which case, maybe there's a way to give a better error message, or perhaps there is a way to, instead of wrapping it in a function, evaluate the forms themselves.

I'm happy to work on this, but would need some direction. Thanks!

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