First commit

init.el

@@ -0,0 +1,74 @@
+(require 'package)
+(package-initialize)
+(add-to-list 'package-archives '("melpa" . "http://melpa.org/packages/"))
+(unless (package-installed-p 'use-package)
+  (package-install 'use-package))
+(require 'use-package)
+
+(use-package rainbow-mode :ensure t)
+(use-package treemacs
+  :ensure t
+  :config
+  (treemacs-follow-mode t)            ;; Enable follow mode
+  (setq treemacs-show-hidden-files t) ;; Show hidden files (optional)
+  (treemacs-fringe-indicator-mode t)  ;; Show fringe indicators
+  (treemacs-git-mode 'deferred)       ;; Enable Git integration
+  (global-set-key (kbd "C-\\") 'treemacs-select-window)
+  (global-set-key (kbd "M-`") 'treemacs-edit-workspaces)
+  (global-set-key (kbd "M-0") 'treemacs-switch-workspace)
+  )  ;; Keybinding to open Treemacs
+
+(custom-set-variables
+ ;; custom-set-variables was added by Custom.
+ ;; If you edit it by hand, you could mess it up, so be careful.
+ ;; Your init file should contain only one such instance.
+ ;; If there is more than one, they won't work right.
+ ;; '(custom-enabled-themes '(tango-dark)) ;; Use a themes that available by emacs
+ '(package-selected-packages nil) )
+(custom-set-faces
+ ;; custom-set-faces was added by Custom.
+ ;; If you edit it by hand, you could mess it up, so be careful.
+ ;; Your init file should contain only one such instance.
+ ;; If there is more than one, they won't work right.
+ )
+
+; Custom themes that I download from internet
+(add-to-list 'custom-theme-load-path "~/.emacs.d/themes/")
+(load-theme 'dracula t)
+(add-to-list 'default-frame-alist '(background-color . "unspecified-bg"))
+
+; 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.
+If the new path's directories does not exist, create them.
+version 2022-06-09"
+  (let* ($backupRoot $backupFilePath)
+    (setq $backupRoot "~/.emacs.d/backup/")
+    ;; remove Windows driver letter in path, e.g. C:
+    (setq $backupFilePath
+          (format "%s%s~" $backupRoot (replace-regexp-in-string "^[A-Za-z]:/" "" Fpath)))
+    (make-directory
+     (file-name-directory $backupFilePath)
+     (file-name-directory $backupFilePath))
+    $backupFilePath
+    ))
+(setq make-backup-file-name-function 'xah-backup-nested-dir-file-path)
+
+; disable backup
+; (setq backup-inhibited t)
+
+; disable auto save
+(setq auto-save-default nil)
+
+;; For example, set the default tab width to 4 spaces
+(setq-default tab-width 4)
+;; For Python mode, set the indentation style
+(add-hook 'python-mode-hook
+          (lambda ()
+            (setq indent-tabs-mode nil) ; Use spaces instead of tabs
+            (setq python-indent-offset 4) )) ; Set the indentation offset
+;; For JavaScript mode, set the indentation style
+(add-hook 'js-mode-hook
+          (lambda ()
+            (setq indent-tabs-mode nil) ; Use spaces instead of tabs
+            (setq js-indent-level 4))) ; Set the indentation offset