Re: mouse-drag-mode-line should maybe use window-tree

[Lennart Borgman]

Richard M. Stallman wrote:

>    I find I can only move the vertical split to the left or right by
>    dragging on the left end of the center-right modeline (at * above).  The
>    cursor does change to <=> when hovering over the left end of the
>    bottom-right modeline (at o above), but trying to drag with mouse-1 has
>    no effect.
>
> I just added a function adjust-window-trailing-edge
> which should make it easy to fix this bug.  We just have to change
> the Lisp code for sideways dragging.  Where is that?
To me the documentation for `adjust-window-trailing-edge' looks like it 
is doing the same thing as `enlarge-window' with preserve-before set to 
t. Am I missing something?