bug#14527: 24.3.50; error in window-state-get

[martin rudalics]

> emacs-version is "24.3.50.1" (yesterday's trunk) though this error was
> introduced in some earlier version.
>
> emacs -Q --debug-init
> M-: (window-state-get)
> see the error:
> ```
> Debugger entered--Lisp error: (error "Combination limit is meaningful for
> internal windows only")
>   window-combination-limit(#<window 0x11106b8 on *scratch*>)
>   window--state-get-1(#<window 0x11106b8 on *scratch*> nil)
>   window-state-get()
>   eval((window-state-get) nil)
>   eval-expression((window-state-get) nil)
>   call-interactively(eval-expression nil nil)
>   command-execute(eval-expression)
> ```

Thanks.  It's due to that change:

2013-03-19  Dmitry Antipov  <dmantipov@yandex.ru>

        * window.c (Fwindow_combination_limit, Fset_window_combination_limit):
        Signal error if window is not internal.  Adjust docstring.

You could try to work around it by using

            (combination-limit
             . ,(unless (window-live-p window)
                  (window-combination-limit window)))

in `window-state-get' but I have no idea whether this would break any
things.  In any case it might be simpler to revert the change because
the original behavior was not broken IIUC.

martin