Re: Pixel-based display functions

[martin rudalics]

> Perhaps you could use the technique similar to what vertical-motion
> does near its beginning.

We can do that.  But it's hardly cheaper than

(save-window-excursion
  (set-window-buffer nil ...)
  (window-text-pixel-size ...)
  ...)

especially when packing multiple `window-text-pixel-size' calls into
the same excursion.

martin