bug#456: menu-bar does not resize window

[martin rudalics]

> I don't agree that it happens by design, unless you mean that it happens just
> because it happens and no one has fixed it yet. ;-)

No.  It happens because it _was_ designed that way.

>>Quite often you want an exact text-layout within a window.
>>For example, you might want windows to display exactly 80
>>columns of buffer text.
>>Adding/removing scroll-bars shouldn't change that.  And what holds for
>>the width of windows should probably also hold for their height.
>
> That might be one use case, for some people. If so, it is also an argument
> against the current way of handling the tool-bar. You can't have it both ways.

Adding/removing tool-bars _may_ change the height of the frame on some
platforms.  I was told by Richard

  I think that change causes another bug.  The height in lines of an
  Emacs frame is not supposed to include the tool bar.  If you create a
  frame and specify 40 lines, you should get 40 lines of text, plus a
  tool bar.

[http://lists.gnu.org/archive/html/emacs-devel/2007-12/msg01148.html]

and by Robert

  I like it that the number of lines of text stays the same.

[http://lists.gnu.org/archive/html/emacs-devel/2007-12/msg01172.html]

Hence, unless we reach a common opinion on how to handle these issues
accross _all_ platforms and window managers, hardly anyone will try to
fix them (IIUC Jan gave up already).