GNU bug report logs - #40692
28.0.50; Constant list modified inside function

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From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Štěpán Němec <stepnem <at> gmail.com>
Cc: Ivan Andrus <darthandrus <at> gmail.com>, 40692 <at> debbugs.gnu.org
Subject: bug#40692: 28.0.50; Constant list modified inside  function
Date: Sun, 19 Apr 2020 00:49:02 +0200

Štěpán Němec <stepnem <at> gmail.com> writes:

> > Now, I understand reference semantics of lists in general, but it
> > seems like this should be different. If this behavior is intentional,
>
> I think it is, although I admit I was confused by it, too, as I've
> somehow come to believe that e.g. `(list) macroexpands to (list 'list),
> but that's not the case: it expands to '(list).

Yes, I had been bitten by this as well some time ago.  I don't find the
discussion anymore, I had asked somewhere and the answer was that it's
an intended feature of backquote to produce an expansion like that.

Michael.

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