Re: C-x h o in Rmail ?

[Eli Zaretskii <eliz@gnu.org>]

> Date: Fri, 1 Jun 2018 11:56:33 +0200
> From: Xavier Maillard <xavier@maillard.im>
> CC: help-gnu-emacs@gnu.org
> 
> > And "C-x h" in this context does what, exactly, according to your
> > dream?  You say "a bunch of messages", which presumably requires to
> > specify that bunch in some way.  How did "C-x h" do that?
> 
> You are right, I should have mentionned the context.
> 
> According to the help entry, C-x h is bound to `mark-whole-buffer`.
> 
> So in my context, let's say I opened my Rmail file (which is big) and
> I want to classify all mails from the help-gnu-emacs to another RMail
> file, I'd probably do M-C-r help-gnu-emacs@ RET and *then* use C-x h
> to select all messsages to output into the another file.

And you would do all that in the Summary buffer, right?

Anyway, I think you were dreaming: such a facility was never part of
Rmail.  I don't see the region being referenced anywhere in the
relevant commands, past and present.  Maybe you had your local changes
which allowed this.