[Emacs] Override xref function AFTER xref loaded

dotfiles/emacs.d/README.org

@@ -1140,6 +1140,8 @@ programming mode.
 #+END_SRC
 *** Handle xrefs annoying dedicated window garbage
 #+BEGIN_SRC emacs-lisp
+(use-package xref
+  :config
   (defun xref--show-pos-in-buf (pos buf select)
     (let ((xref-buf (current-buffer))
           win)
@@ -1152,7 +1154,7 @@ programming mode.
           (with-current-buffer xref-buf
             (setq-local other-window-scroll-buffer buf))))
       (when select
-      (select-window win))))
+        (select-window win)))))
 #+END_SRC
 *** display-buffer-alist
 #+BEGIN_SRC emacs-lisp