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Re: Plist-put changes literal argument

From: Yuan Fu
Subject: Re: Plist-put changes literal argument
Date: Wed, 2 Sep 2020 20:18:12 -0400

> I also tried setcar, same result. So Elisp doesn’t copy arguments?
> Yuan

Ok, think more of it, it would be weird to make a full copy of cons (and other 
non-primitive values) on function call. I wonder how do other languages deal 
with this, because I never run into problems like this (except for in Python, 
with its default argument values).


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