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alter-meta! spans evaluation #733

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devn opened this issue May 15, 2022 · 0 comments
Closed

alter-meta! spans evaluation #733

devn opened this issue May 15, 2022 · 0 comments

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@devn
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devn commented May 15, 2022

version

0.3.5

platform

JVM 17

problem

alter-meta! can modify metadata on vars within SCI, making future evaluation produce odd results.

repro

(sci/eval-string "(-> 1 inc inc)") ;; => 3
(sci/eval-string "(alter-meta! #'-> dissoc :macro)") ;; => nil
(sci/eval-string "(-> 1 inc inc)") ;; => #function[clojure.core/inc]

expected behavior

(sci/eval-string "(-> 1 inc inc)") ;; => 3
(sci/eval-string "(alter-meta! #'-> dissoc :macro)") ;; => nil
(sci/eval-string "(-> 1 inc inc)") ;; => 3

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