* lisp/frameset.el (frameset-restore): Make sure last-focus frame has focus.

Call select-frame-set-input-focus to restore focus on the frame
that had last-focus-update frame parameter before saving frameset.
(Bug#36894)

1 files changed, 10 insertions, 0 deletions

diff --git a/lisp/frameset.el b/lisp/frameset.el
index 60b6fe38ad9..9a7a75f5efc 100644
--- a/lisp/frameset.el
+++ b/lisp/frameset.el
@@ -1346,6 +1346,16 @@ All keyword parameters default to nil."
             (error
              (delay-warning 'frameset (error-message-string err) :warning))))))
 
+    ;; Make sure the frame with last-focus-update has focus.
+    (let ((last-focus-frame
+           (catch 'last-focus
+             (maphash (lambda (frame _)
+                        (when (frame-parameter frame 'last-focus-update)
+                          (throw 'last-focus frame)))
+                      frameset--action-map))))
+      (when last-focus-frame
+        (select-frame-set-input-focus last-focus-frame)))
+
     ;; Make sure there's at least one visible frame.
     (unless (or (daemonp)
                 (catch 'visible