bug#61781: 28.2; (setq-default indent-tabs-mode nil) causes weird next-line behavior in *Help*

[Stefan Kangas]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Spencer Baugh <sbaugh@janestreet.com>
>> Date: Fri, 24 Feb 2023 17:32:09 -0500
>>
>> >From emacs -Q:
>>
>> 1. M-: (setq-default indent-tabs-mode nil) RET
>> 2. Open up a help buffer, e.g. C-x 4 C-h
>> 3. Move point to the link for the first binding (find-file-other-window)
>> 4. C-n
>> 5. Observe that in addition to moving down, point also moves back one
>>    column (as if we had hit C-b).
>>
>> Without indent-tabs-mode set to nil, next-line stays in the same column.
>
> I can reproduce this in Emacs 28.2, but not in Emacs 29, since
> describe-prefix-bindings in Emacs 29 no longer heeds indent-tabs-mode,
> it always inserts tabs.  So if this problem still exists in Emacs 29,
> you or someone else will have to come up with a different reproducer.

Ping.  Specer, is this an issue for you in Emacs 29?  If so, could you
come up with a different reproducer?  Thanks in advance.