bug#67249: 30.0.50; `same-frame` equivalent for `display-buffer-alist`

[Eli Zaretskii]

> Cc: "67249@debbugs.gnu.org" <67249@debbugs.gnu.org>
> From: Drew Adams <drew.adams@oracle.com>
> Date: Sat, 9 Dec 2023 22:40:00 +0000
> 
> +** New 'pop-up-frames' action alist entry for 'display-buffer'.
> +This has the same effect as the variable of the same name and takes
>                                  ^^^^^^^^
> +precedence over the variable when present.
> 
> Please don't do that.  This is a user option,
> _not_ just a variable.  (And yes, it should
> continue to be supported, forever, regardless
> of the fact that it's been "deprecated".)
> 
> `display-buffer' shouldn't override the user's
> choice for the behavior.

There's nothing wrong with having parameters and user options by the
same name that affect the same functionality, but indeed usually the
user option overrides the parameter, not the other way around.  See,
for example, the cursor-type option and frame parameter.