bug#27229: eldoc wrong highlighting for "when"

[Eli Zaretskii]

> Resent-From: Lars Ingebrigtsen <larsi@gnus.org>
> Original-Sender: "Debbugs-submit" <debbugs-submit-bounces@debbugs.gnu.org>
> Resent-CC: bug-gnu-emacs@gnu.org
> Resent-Sender: help-debbugs@gnu.org
> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Mon, 02 May 2022 12:30:56 +0200
> Cc: 27229@debbugs.gnu.org
> 
> Lars Ingebrigtsen <larsi@gnus.org> writes:
> 
> > I think it pretty much looks like the (fn) in `when' (and `unless') is a
> > bug (it certainly trips up eldoc here, which would do the correct thing
> > if (fn) is removed).
> 
> So I've now done this in Emacs 29.

So now "C-h f when" says

  (when COND &rest BODY)

where it previously said

  (when COND BODY...)

Isn't this a regression?