DEFSETF and packages

Hello,

I had to add some missing functionality, so I did

(in-package :my-utils)

(defun set-file-write-date (file date) ... )

(defsetf file-write-date set-file-write-date)

and... that was it! I didn't have to export anything, not even
SET-FILE-WRITE-DATE. I can use (setf file-write-date) from
anywhere.

That's... odd, isn't it?

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