bug#46463: 27.1; rmailout glitch

[Eli Zaretskii]

> From: Francesco Potortì <pot@gnu.org>
> Date: Fri, 12 Feb 2021 16:10:04 +0100
> 
> Using the latest versions from trunk as of 11 February:
> 
> rmailsum
> rmailout
> rmailmm
> rmail
> rmailedit
> 
> - run rmail on a mail file with N messages (N>1)
> - delete message N
> - go to message N-1 and press 'o' to output it to a different mail
>   file: a message says that no undeleted messages exist and you still
>   see message N-1 (which is correct)
> - (setq rmail-output-reset-deleted-flag t
>       rmail-delete-after-output t)
> - undelete message N-1
> - press 'o': no message is displayed and you see (deleted) message N

I cannot reproduce this.  Is this in "emacs -Q"?  If so, could you
please show a complete recipe, starting from "emacs -Q", and
preferably excluding any parts that are not needed for showing the
issue?

Also, the Subject says "27.1"; if this problem exists in Emacs 27.1 as
well, please tell, as that could change the priority of handling the
issue, given that Emacs 27.2 is in the last stages of pretesting.

Thanks.