Hi Eli et al.,

Maxim Cournoyer <maxim.cournoyer@gmail.com> writes:

[...]

>> I don't see how a user option to control this could be useful, since
>> the preferred behavior is not only buffer-local, but also specific to
>> certain syntactic constructs.  But I won't object to having such an
>> option.
>
> Having the behavior defined per-project or even globally (reverting to
> the the pre-Emacs 28 behavior) via a simple option seems like it'd
> simplify things, and make them discoverable.

I tried fixing this generally, as it seems to me that something in
lisp-mode should be meet the needs of all lisp-derived languages such as
Scheme and not just Elisp.  I first added two tests, one of which
ensures no regression to the original bug that lead to this current
behavioral change (bug#28937) and the other one that should pass once
the issue reported here (bug#56197) is resolved.

The last patch is a WIP that didn't work; I was hoping that inserting
spaces corresponding to the width of the indent in the narrowed string
would cause the indent to be preserved only for the first line.  I don't
have other ideas at the moment; I'd appreciate if someone could tip in.