Window resize annoyance

[FKtPp]

On Mon, Oct 29, 2007 at 01:27:26PM -0500, skip at pobox.com wrote:
> A colleague noticed this problem today with 21.5.28 in an ESS/R context.
> I've been able to reproduce it with just a normal comint shell.  To
> reproduce:
> 
>     * In a fresh frame displaying one window, execute: M-x shell RET
>     * Split it twice: C-x 2 C-x 2
>     * Navigate to the bottom window: C-x o C-x o
>     * Execute a command, e.g.: for i in 1 2 3 ; do echo $i ; done
>     * Recall that command with: M-r for RET
>     * Note that the window sizes changed.  Hit RET to execute the command.
>     * Recall it again: M-r for RET
> 
> If your frame was tall enough the window sizes will have changed again.  It
> appears to me that the middle window gets the space taken from the bottom
> window.  The top window stays fixed in size.

Sometimes in some case, the frame size also changed unexpectly.  But it is very
diffcult to reproduce that.