bug#18912: 24.4; mode-line corruption on graphical frames in dual-headed display

[martin rudalics]

> Now carefully decrease the frame's height by dragging its upper or
> lower edge with the mouse.  Please drag it slowly and carefully, so
> that the frame is resized one pixel at a time.  After each resize,
> please see if the mode line is no longer corrupted.

Is there any reason Bruno cannot use something like

(while (y-or-n-p "decrease?")
  (set-frame-height nil (1- (frame-text-height)) nil t))

here?

martin