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

[Stefan Monnier]

> If yes, I will need help with various edge cases, because I am not
> really sure about them. For example, I have no clue if below is expected
>
> (defvar test/foo 'value)
> (default-boundp 'test/foo)
> (default-value 'test/foo) ;; -> value

Yup.

> (let ((test/foo t))
>   (default-value 'test/foo)) ;; -> t ???

Yup.

> (defvar-local test/foo2 'value)
> (default-boundp 'test/foo2) ;; -> t

Yup.

> (default-value 'test/foo2) ;; -> value

Yup.

> (let ((test/foo2 t))
>   (default-value 'test/foo2)) ;; -> t ???

Yup.

> (setq-default test/foo2 'value2)
> (default-boundp 'test/foo2) ;; -> t

Yup.

> (default-value 'test/foo2) ;; -> value2

Yup.

> (let ((test/foo2 t))
>   (default-value 'test/foo2)) ;; -> t ???

Yup.


        Stefan