bug#57890: 28.1; Doc string of `initial-frame-alist'

[Lars Ingebrigtsen]

Po Lu <luangruo@yahoo.com> writes:

>> And isn't this advice outdated now anyway?  The easiest way to specify
>> initial-frame-alist is to adjust it in `early-init-file', I think?
>
> But that way it is impossible to have different geometries according to
> the display or screen in use.

That's true.  So I think the thing to do here is to prepend the existing
text with "if you're using X" like Drew suggested, but also mention
`early-init-file'.

So I've now done that in Emacs 29.