Den tir. 8. jan. 2019 kl. 21.40 skrev David Storrs <david.sto...@gmail.com>:

>
> This.  In an ideal world, before/after/around would be parameterized so
> that you can make the change only for a defined scope.
>
Still, the intent was never that it would extend its effects outside the
> current module.
>

In that case you can use let-syntax and to redefine #%app.

/Jens Axel

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