feat(emacs): Basic emacs setup

tools/emacs.d/.gitignore

@@ -0,0 +1,17 @@
+# 自动生成的目录
+/auto-save-list/
+/elpa/
+/eshell/
+/server/
+/url/
+
+# 临时文件
+tutorial
+*~
+\#*\#
+.#*
+*.elc
+
+# 自动保存的文件
+auto-save-list
+tramp

tools/emacs.d/custom.el

@@ -0,0 +1,12 @@
+(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.
+ '(package-selected-packages '(use-package evil company)))
+(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.
+ )

tools/emacs.d/init.el

@@ -0,0 +1,31 @@
+;;; init.el --- Entry point of GNU/Emacs configuration
+;;; First edit date 2025/01/27
+
+;;; Organised by such directory structure
+;;; init.el -- This file, entry point
+;;; lisp/
+;;;      init-basic.el
+;;;      init-keymaps.el
+;;;      init-package.el
+;;;      init-evil.el
+;;; custom.el -- Auto Generated
+
+;; All elisp files under emacs.d/lisp will be loaded
+(add-to-list 'load-path (expand-file-name "lisp" user-emacs-directory))
+
+;; Store the auto-generated custom config to `custom.el`
+(setq custom-file (expand-file-name "custom.el" user-emacs-directory))
+
+;; Load each modules
+(require 'init-basic)
+(require 'init-keymaps)
+(require 'init-package)
+(require 'init-evil)
+
+;; Load `custom` file
+(when (file-exists-p custom-file)
+  (load custom-file))
+
+
+;;; init.el end
+

tools/emacs.d/lisp/init-basic.el

@@ -0,0 +1,15 @@
+;;; init-basic.el 
+
+;; Disable startup message
+(setq inhibit-startup-message t)
+
+;; Use line number by default
+(global-display-line-numbers-mode 1)
+;; Vim-like relativenumber
+(setq display-line-numbers-type 'relative)
+
+;; https://book.emacs-china.org/#orgcfd105e Open with Emacs
+(server-mode 1)
+
+;; Export module 
+(provide 'init-basic)

tools/emacs.d/lisp/init-evil.el

@@ -0,0 +1,26 @@
+;;; init-evil.el
+
+;; Evil - Extensible VI Layer
+(defvar evil-colemak-state-map (make-sparse-keymap))
+
+(use-package evil
+  :ensure t
+  :config
+  (evil-mode 1)
+  ; Colemak Vim Arrow
+  (evil-define-key '(normal visual operator) 'global
+    "n" 'evil-next-line
+    "e" 'evil-previous-line
+    "i" 'evil-forward-char
+    "l" 'evil-insert
+    "L" 'evil-insert-0-line
+    "k" 'evil-search-next
+    "K" 'evil-search-previous
+    "j" 'evil-forward-word-end
+    "J" 'evil-forward-WORD-end
+    "N" '(lambda () (interactive) (evil-next-line 5))       ; 5n
+    "E" '(lambda () (interactive) (evil-previous-line 5))   ; 5e
+  ))
+
+
+(provide 'init-evil)

tools/emacs.d/lisp/init-keymaps.el

@@ -0,0 +1,11 @@
+;;; init-keymaps.el
+
+;; Once this is defined, `M-x open-init-file` will open this file
+(defun open-init-file()
+  (interactive) ;; Mark function as `interactive` that allows user to access by M-x open-init-file RET
+  (find-file  "~/.emacs.d/init.el"))
+(defun reload-init()
+  (interactive) 
+  (load-file "~/.emacs.d/init.el"))
+
+(provide 'init-keymaps)

tools/emacs.d/lisp/init-package.el

@@ -0,0 +1,22 @@
+;;; init-package.el
+
+;; Manual Install Packages (plugins): Options > Manage Emacs Packages (Don't use this)
+
+(global-company-mode 1) ; Enable company
+
+;; Ensure use-package is installed (use-package: lazy load plugin manager)
+(unless (package-install 'use-package)
+  (package-refresh-contents)
+  (package-install 'use-package))
+
+;; Plugins Here
+;; Company - Complete Anything
+(use-package company
+  :ensure t
+  :config
+  (global-company-mode 1)
+  (define-key company-active-map (kbd "C-n") 'company-select-next)
+  (define-key company-active-map (kbd "C-p") 'company-select-previous))
+
+
+(provide 'init-package)