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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Troy Hinckley <troyhinckley@gmail.com>
Cc: Eli Zaretskii <eliz@gnu.org>,  emacs-devel@gnu.org,  matt@rfc20.org
Subject: Re: question about Qnil representation
Date: Wed, 26 Oct 2022 15:01:04 -0400	[thread overview]
Message-ID: <jwvfsfa5s2y.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <168eb4b5-40be-43dc-8501-dc9f4c65c56f@Spark> (Troy Hinckley's message of "Wed, 26 Oct 2022 12:46:39 -0600")

> Ah, thank you. So it is not a pointer but an index.

Not really: it's a pointer that's offset by just the right amount that
it ends up being 0 in the case of the pointer to Qnil.


        Stefan




  reply	other threads:[~2022-10-26 19:01 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <5a560265-fa81-42d2-945b-ab85d72df9e6@Spark>
2022-10-26 15:40 ` question about Qnil representation Troy Hinckley
2022-10-26 16:00   ` Eli Zaretskii
2022-10-26 16:04     ` Troy Hinckley
2022-10-26 16:09       ` Eli Zaretskii
2022-10-27  0:45       ` Po Lu
2022-10-26 16:16   ` Matt Armstrong
2022-10-26 16:22     ` Troy Hinckley
2022-10-26 16:45       ` Eli Zaretskii
2022-10-26 18:46         ` Troy Hinckley
2022-10-26 19:01           ` Stefan Monnier [this message]
2022-10-26 19:03           ` Eli Zaretskii
2022-10-27  0:47           ` Po Lu

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