On Sat, Jun 25, 2016 at 4:16 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>
> FWIW, repeating the OP's recipe, Emacs now starts with a split-window
> configuration, with the selected window showing the *scratch* buffer,
> and the *Warnings* buffer displaying the above-mentioned warning.  So
> I'm not sure the original complaint is still valid.

I think the complaint is more about the wording of the message and
less about the buffer/window configuration. So I propose rewording it
to

    Use of `C:\.emacs' to define `HOME' is deprecated, see (emacs)
`Windows Home'

This way the user will be pointed to the relevant section of the
manual, and since the warning uses the same phrasing as the manual,
searching for the warning should turn up links to that manual section
as well.