bug#18195: 24.3.92; window-screen-lines is not accurate

[Dmitry Gutov]

On 08/06/2014 08:23 PM, Eli Zaretskii wrote:

> > Not really. We have a pull request that changes the code to do what
> > you're describing, but for the moment we only use one overlay at a time.
>
> I'm talking about a kind of menu of candidates, which definitely takes
> more than one line.  That cannot be done with a single overlay, unless
> you copy the buffer text into the overlay string, and completely cover
> the buffer text itself.

Indeed, that's what we do currently.