bug#45625: C-p (previous-line) now wipes out windows, if misaimed

["Jose A. Ortega Ruiz" <jao@gnu.org>]

On Tue, Jan 05 2021, Richard Stallman wrote:

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>
>   > > Jidanni, we could add an option to tell ESC ESC ESC not to mess with
>   > > the window layout, for users who do know the C-x 1 command.
>
>   > FWIW, i would certainly make use or that option (the triple C-[ scenario
>   > has happened to me many times, and i learned about winner-undo just to
>   > be able to revert quickly its effects).
>
> Want to write a patch to create the option, with the default
> being the current behavior?

i just took a look, and there is already a variable,
buffer-quit-function, to set up a function to call instead of
delete-other-windows.  i suspect it was introduced with something like
addressing this problem in mind (i think it's not used anywhere else).

for instance, just setting

    (setq buffer-quit-function (lambda () t))

fixes the issue for me.

jao
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