Subject: bug#66117: 30.0.50; `find-buffer-visiting' is slow when opening large number of buffers

From: Gerd Möllmann <[email-masked]>
Date: Wed, 03 Jan 2024 15:28:00 +0100

Gerd Möllmann <[email-masked]> writes:

> (And, BTW, the doc string of let says it's a generalized variable?
> Is that right?)

To answer my own question: it is indeed

  (defvar x '(1 . 2))
  (setf (let ((a x)) (cdr a)) 4)
  x
  => (1 . 4)