nav-flash: better mechanism on determining last point before blink

This is ported from Doom Emacs.

layers/+misc/nav-flash/config.el

@@ -1,4 +1,4 @@
-;; config.el --- Nav-flash Layer Configuration File for Spacemacs.
+;;; config.el --- Nav-flash Layer Configuration File for Spacemacs. -*- lexical-binding: t; -*-
 ;;
 ;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
@@ -32,4 +32,4 @@
   '(repeat symbol))
 
 (defvar nav-flash--last-point nil
-  "Internal variable to store the last point and windoow before blinking.")
+  "Internal variable to store the active window, buffer, point before blinking.")

layers/+misc/nav-flash/funcs.el

@@ -38,10 +38,12 @@ like switching windows or jumping to another part of the file)."
   (unless (or (memq this-command nav-flash-exclude-commands)
               (bound-and-true-p so-long-minor-mode)
               (apply #'derived-mode-p nav-flash-exclude-modes)
-              (and (equal (point-marker) (car nav-flash--last-point))
-                   (equal (selected-window) (cdr nav-flash--last-point))))
+              (equal nav-flash--last-point
+                     (list (selected-window)
+                           (current-buffer)
+                           (point))))
     (nav-flash//blink-cursor)
-    (setq nav-flash--last-point (cons (point-marker) (selected-window)))))
+    (setq nav-flash--last-point (list (selected-window) (current-buffer) (point)))))
 
 (defun nav-flash/delayed-blink-cursor-h (&rest _)
   "Like `nav-flash//blink-cursor', but blinks after a tiny pause.