Starting from this window configuration of 5 windows split like this

enter image description here

How do I create a sixth window that would take all the bottom space like the outline in red? enter image description here

1 Answer 1


split-root-window-below with a size argument almost does this, only that it scales the existing windows differently than you want.

This function gives the exact behavior in the picture:

(defun my-split-root-window-below ()
  (split-root-window-below (/ (frame-height) -4))
   (window-in-direction 'above)
   (- (/ (frame-height) 2)
      (/ (- (frame-height)
            (/ (frame-height) 4))

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