bug#63509: [PATCH] Make copy-tree work with records

[Joseph Turner]

Hello,

copy-tree does not currently work with records:

(cl-defstruct foo bar)
(let* ((rec (make-foo :bar "hello"))
       (copy (copy-tree rec t)))
  (setf (foo-bar copy) "goodbye")
  (foo-bar rec))

Expected "hello"; actual "goodbye".

Attached patch fixes this behavior.

Please tell me if I misunderstand the intended behavior of copy-tree.

Thank you,

Joseph

0001-Make-copy-tree-work-with-records.patch
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