Fix check for derived modes in display-buffer-reuse-mode-window

* lisp/window.el (display-buffer-reuse-mode-window): Make the
check for derived modes actually work (bug#38677).

diff --git a/lisp/window.el b/lisp/window.el
index 9aca94d502a8568014ac182f9810376aaf0e0438..5ed7a62bcf6f5a342401614071e696124339ca3a 100644 (file)
--- a/lisp/window.el
+++ b/lisp/window.el
@@ -7712,7 +7712,7 @@ indirectly called by the latter."
                (with-current-buffer (window-buffer window)
                  (cond ((memq major-mode allowed-modes)
                         'same)
-                       ((derived-mode-p allowed-modes)
+                       ((apply #'derived-mode-p allowed-modes)
                         'derived)))))
           (when (and mode?
                      (not (and inhibit-same-window-p