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From: Michael Heerdegen <michael_heerdegen@web.de>
Newsgroups: gmane.emacs.help
Subject: Re: Calling a function with undefined symbol
Date: Tue, 08 Nov 2022 20:57:59 +0100
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<tomas@tuxteam.de> writes:

> Now would that be more fun if Elisp did tail call optimization?
>
> Let me try in Guile:
>
>   scheme@(guile-user)> ((lambda (x) (x x)) (lambda (x) (x x)))
>
> Yes, it is :)

Impressive - it just produces a bit of heat over time, but it doesn't
consume memory.

Michael.