bug#38181: Actual height of mode-line not taken into account

[martin rudalics]

>> I suppose so.  But please always keep in mind that the window code
>> does not handle problems caused by specifications in the mode and
>> header lines immediately.
>
> What kind of problems are we talking about?

Any problems with the minimum size of windows as the one described in
the next sentence.

>> For example, it will not auto-resize a one-line window when its mode
>> line height is increased to more than its text height.
>
> That's a separate issue, isn't it?

It's similar, at least.  The scroll bar issue is another similar one.

>> Because 'fit-window-to-buffer' now has to calculate the mode line
>> height which it didn't before and which for the majority of users
>> never changes.
>
> Is that a significant problem?

I hope it isn't.

> It's not like fit-window-to-buffer is
> expected to be called in a tight loop, right?  Displaying a mode line
> is no more expensive (actually, even usually expensive) than calling
> vertical-motion to move one line, and we would never think twice
> before adding a call to the latter, right?

Agreed (I suppose you meant to say "even usually less expensive"
above).

martin