bug#69738: [BUG] rmail-mail-new-frame doesn't delete the new frame after composing the message on Emacs 29.2

[Eli Zaretskii]

> Cc: 69738@debbugs.gnu.org
> Date: Tue, 12 Mar 2024 15:54:47 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> 
> > Date: Mon, 11 Mar 2024 22:49:54 +0000
> > From: rameiko87@posteo.net
> > 
> > For brevity I don't include the steps for C-c nor for C-s but only for 
> > C-d and C-k; but I can assure you that the case of C-c would yield the 
> > same result; I wonder what the desired result would be for C-s instead.
> > 
> > Steps to reproduce:
> > 
> > emacs -Q -nw
> > M-: (setq rmail-mail-new-frame t)
> > M-x rmail
> > m
> > C-c C-d
> > 
> > alternatively, use C-c C-k on the last line.
> > 
> > Expected result:
> > The frame is deleted (as the manual specifies at the end of 34.10).
> > 
> > Actual result:
> > The frame is not deleted.
> 
> It's a documentation bug: that frame is deleted only if certain
> conditions are met.  One of those conditions is that there are
> visible frames on display besides the frame where the message was
> composed.  In the -nw session, that condition is not met.  See
> rmail-mail-return for more details about what is actually being done
> in each case.
> 
> IOW: this is a feature, and (IMO) a reasonable one at that, it just
> needs a better documentation.

I've now made the documentation more accurate (on the emacs-29
branch), and I'm therefore closing this bug.