Fixing lexical-binding issue

config/backup.el

@@ -1,3 +1,4 @@
+;; -*- lexical-binding: t; -*-
 ; make backup to a designated dir, mirroring the full path
 (defun xah-backup-nested-dir-file-path (Fpath)
   "Return a new file path and create dirs.

config/clipboard.el

@@ -1,3 +1,4 @@
+;; -*- lexical-binding: t; -*-
 ;; Clipboard integration (Not work in terminal)
 (setq select-enable-clipboard t)
 (setq select-enable-primary t)

config/editor.el

@@ -1,3 +1,4 @@
+;; -*- lexical-binding: t; -*-
 ;; For example, set the default tab width to 4 spaces
 (setq-default tab-width 4)
 ;; For Python mode, set the indentation style

config/keybinding.el

@@ -1,3 +1,4 @@
+;; -*- lexical-binding: t; -*-
 (global-set-key (kbd "C-c \\"      ) 'treemacs                    ) ;; Tree Toggle
 (global-set-key (kbd "C-c C-\\"    ) 'treemacs-select-window      ) ;; Tree Focus
 (global-set-key (kbd "C-c M-`"     ) 'treemacs-edit-workspaces    )

config/multiwindows.el

@@ -1,2 +1,3 @@
+;; -*- lexical-binding: t; -*-
 (treemacs-define-RET-action 'file-node-closed #'treemacs-visit-node-ace)
 (treemacs-define-RET-action 'file-node-open   #'treemacs-visit-node-ace)

config/packages.el

@@ -1,3 +1,4 @@
+;; -*- lexical-binding: t; -*-
 (require 'package)
 
 (package-initialize)

config/ui.el

@@ -1,3 +1,4 @@
+;; -*- lexical-binding: t; -*-
 (setq tab-bar-show 1) ;; Show the tab bar only when more than one tab exists.
 
 (global-display-line-numbers-mode t) ;; Display line numbers

init.el

@@ -1,3 +1,4 @@
+;; -*- lexical-binding: t; -*-
 (add-to-list 'load-path (expand-file-name "config" user-emacs-directory))
 (load-file (expand-file-name "packages.el"     (concat user-emacs-directory "config")))
 (load-file (expand-file-name "ui.el"           (concat user-emacs-directory "config")))

themes/dracula-theme.el

@@ -1,3 +1,4 @@
+;; -*- lexical-binding: t; -*-
 ;;; dracula-theme.el --- Dracula Theme
 
 ;; Copyright 2015-present, All rights reserved