On Sat, 2023-01-21 at 00:43 -0500, Stefan Monnier wrote:
> > The attached patch should fix this, thoughts?
> 
> It's not really an option:
> - it's expensive
> - it breaks code when it doesn't form a tree, e.g.
> 
>       (list '#1=(a b #1#) 'c 'd)
> 
> Instead, we need to find out where in the code we perform the
> side effect and change just that part.
> 
> 
>         Stefan
> 

Ah, right. Theother way I could think of a fix is setq-ing `form` to a
shallow copy of the original form, with only the place(s) changed. This
patch tries to do that by using `pcase-let` to destructure forms.
 

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Vibhav Pant
vibhavp@gmail.com
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