(server-switch-buffer): Cope with dead frames and windows.

1 files changed, 4 insertions, 1 deletions

diff --git a/lisp/server.el b/lisp/server.el
index eab345322f8..0de7dcd7e60 100644
--- a/lisp/server.el
+++ b/lisp/server.el
@@ -342,9 +342,12 @@ starts server process and that is all.  Invoked by \\[server-edit]."
 (defun server-switch-buffer (next-buffer)
   "Switch to another buffer, preferably one that has a client.
 Arg NEXT-BUFFER is a suggestion; if it is a live buffer, use it."
-  (cond ((windowp server-window)
+  (cond ((and (windowp server-window)
+              (window-live-p server-window))
          (select-window server-window))
         ((framep server-window)
+         (if (not (frame-live-p server-window))
+             (setq server-window (make-frame)))
          (select-window (frame-selected-window server-window))))
   (if (window-minibuffer-p (selected-window))
       (select-window (next-window nil 'nomini 0)))