Re: MY window tree!

["Lennart Borgman (gmail)" <lennart.borgman@gmail.com>]

martin rudalics wrote:
>  >> In any case
>  >> there's no need to scan the entire `buffer-list' for overlays.  Any
>  >> buffer involved must have been displayed by the old window-tree and 
> must
>  >> be displayed by the new window-tree.
>  >
>  >
>  >
>  > I can not see that a buffer that the buffer must have been displayed by
>  > the old window-tree. The 'window property might just be there to be
>  > shown later when the buffer is displayed in that special window.
> 
> But where does the "special window" come from?
> 
> Case 1: The special window was created by `winsav-put-window-tree'.  In
> this case you set the overlay property to the special window.
> 
> Case 2: The special window was not created by `winsav-put-window-tree'.
> In this case the special window must have existed before calling
> `winsav-put-window-tree' and there's no need to change the value of the
> property.  If the property references the window it can be displayed.
> Otherwise it was not displayed before and will not be afterwards.
> 
> A window property is not clairvoyant.  It may reasonably reference only
> a window that exists at the time you assign the property.


How does this relate to if the buffer was DISPLAYED in the window tree 
(ie if window-buffer had that value for any window in the window tree) 
at the moment winsav-get-window-tree was called?