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Emacs Configuration

Basic UI Configuration

(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.
 '(display-time-mode t)
 '(global-command-log-mode t)
 '(inhibit-startup-screen t)
 '(ivy-mode t)
 '(menu-bar-mode nil)
 '(package-selected-packages
   '(org-bullets evil-magit magit counsel-projectile projectile hydra evil-collection evil general doom-themes helpful ivy-rich which-key rainbow-delimiters doom-modeline counsel ivy use-package exwm))
 '(scroll-bar-mode nil)
 '(set-fringe-mode 10)
 '(tool-bar-mode nil)
 '(visible-bell t))
(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.
 )

(global-set-key (kbd "<escape>") 'keyboard-escape-quit)
(column-number-mode)
(global-display-line-numbers-mode t)

;; Frame transparency
(set-frame-parameter (selected-frame) 'alpha '(90 . 90))
(add-to-list 'default-frame-alist '(alpha . (90 . 90)))
(set-frame-parameter (selected-frame) 'fullscreen 'maximized)
(add-to-list 'default-frame-alist '(fullscreen . maximized))

;; Disable line numbers for some modes
(dolist (mode '(org-mode-hook
                term-mode-hook
                vterm-mode-hook
                eshell-mode-hook))
  (add-hook mode (lambda() (display-line-numbers-mode 0))))

Packages

(require 'package)
(setq package-archives '(("melpa" . "https://melpa.org/packages/")
                         ("org" . "https://orgmode.org/elpa/")
                         ("elpa" . "https://elpa.gnu.org/packages/")))

(package-initialize)
(unless (package-installed-p 'use-package)
  (package-refresh-contents)
  (package-install 'use-package))

(require 'use-package)
(setq use-package-always-ensure t)

Ivy

(use-package ivy
  :diminish
  :bind (("C-s" . swiper)
         :map ivy-minibuffer-map
         ("TAB" . ivy-alt-done)
         ("C-l" . ivy-alt-done)
         ("C-j" . ivy-next-line)
         ("C-k" . ivy-previous-line)
         :map ivy-switch-buffer-map
         ("C-k" . ivy-previous-line)
         ("C-l" . ivy-done)
         ("C-d" . ivy-switch-buffer-kill)
         :map ivy-reverse-i-search-map
         ("C-k" . ivy-previous-line)
         ("C-d" . ivy-reverse-i-search-kill))
  :config
  (ivy-mode 1))

(use-package ivy-rich
  :init (ivy-rich-mode 1))

Doom-Modeline

;; NOTE: The first time you load your config on a new machine, need to run following:
;; M-x all-the-icons-install-fonts
(use-package all-the-icons)

(use-package doom-themes)
(load-theme 'doom-dark+ t)

(use-package doom-modeline
  :ensure t
  :init (doom-modeline-mode t))

Which-Key

(use-package which-key
  :init (which-key-mode)
  :diminish which-key-mode
  :config
  (setq which-key-idle-delay 0.3))

Counsel

(use-package counsel
  :bind (("M-x" . counsel-M-x)
         ("C-x b" . counsel-ibuffer)
         ("C-x C-f" . counsel-find-file)
         ("C-M-j" . counsel-switch-buffer)
         :map minibuffer-local-map
         ("C-r" . 'counsel-minibuffer-history))
  :custom
  (counsel-linux-app-format-function #'counsel-linux-app-format-function-name-only)
  :config
  (counsel-mode 1))

Helpful

(use-package helpful
  :custom
  (counsel-describe-function-function #'helpful-callable)
  (counsel-describe-variable-function #'helpful-variable)
  :bind
  ([remap describe-function] . counsel-describe-function)
  ([remap describe-command] . helpful-command)
  ([remap describe-variable] . counsel-describe-variable)
  ([remap describe-key] . helpful-key))

Evil

(defun gg/evil-hook ()
  (dolist (mode '(custom-mode
                  gim-rebase-mode))
    (add-to-list 'evil-emacs-state-modes mode)))

(use-package evil
  :demand t
  :init
  (setq evil-want-integration t)
  (setq evil-want-keybinding nil)
  (setq evil-want-C-u-scroll t)
  (setq evil-want-C-i-jump nil)
  :hook (evil-mode . gg/evil-hook)
  :config
  (evil-mode 1)
  (define-key evil-insert-state-map (kbd "C-g") 'evil-normal-state)
  (define-key evil-insert-state-map (kbd "C-h") 'evil-delete-backward-char-and-join)

  ;; Use visual line motions even outside visual-line-mode buffers
  (evil-global-set-key 'motion "j" 'evil-next-visual-line)
  (evil-global-set-key 'motion "k" 'evil-previous-visual-line)

  (evil-set-initial-state 'message-buffer-mode 'normal)
  (evil-set-initial-state 'dashboard-mode 'normal))

(use-package evil-collection
  :after evil
  :config
  (evil-collection-init))

General

(use-package general
  :config
  (general-create-definer gg/leader-keys
    :keymaps '(normal insert visual emacs)
    :prefix "SPC"
    :global-prefix "C-SPC")

  (gg/leader-keys
   "t"  '(:ignore t :which-key "toggles")
   "tt" '(counsel-load-theme :which-key "choose theme")
   "ts" '(hydra-text-scale/body :which-key "scale text")
   "g"  '(magit :which-key "magit")
   "v" '(vterm :which-key "vterm")))

Org

  (defun gg/org-mode-visual-fill ()
    (setq visual-fill-column-width 100
          visual-fill-column-center-text t)
    (visual-fill-column-mode 1))

(use-package visual-fill-column
  :hook (org-mode . gg/org-mode-visual-fill))

  (defun gg/org-mode-setup ()
    (org-indent-mode)
    (variable-pitch-mode 1)
    (auto-fill-mode 0)
    (visual-line-mode 1)
    (setq evil-auto-indent nil))

  (use-package org
    :hook (org-mode . gg/org-mode-setup))

  (use-package org-bullets
    :after org)

  (require 'org-tempo)
  (add-to-list 'org-structure-template-alist '("el" . "src emacs-lisp"))

Auto-tangle Configuration Files

(defun gg/org-babel-tangle-config ()
  (when (string-equal (file-name-directory (buffer-file-name))
                       (expand-file-name "~/Documents/dotfiles/"))
     ;; Dynamic scoping to the rescue
     (let ((org-confirm-babel-evaluate nil))
       (org-babel-tangle))))

(add-hook 'org-mode-hook (lambda () (add-hook 'after-save-hook #'gg/org-babel-tangle-config)))

Configure Babel Languages

(org-babel-do-load-languages
 'org-babel-load-languages
 '((emacs-lisp . t)
   (python . t)))

Hydra

(use-package hydra)

(defhydra hydra-text-scale (:timeout 4)
  "scale text"
  ("j" text-scale-increase "in")
  ("k" text-scale-decrease "out")
  ("f" nil "finished" :exit t))

Projectile

(use-package projectile
  :diminish projectile-mode
  :config (projectile-mode)
  :custom ((projectile-completion-system 'ivy))
  :bind-keymap
  ("C-c p" . projectile-command-map)
  :init
  (when (file-directory-p "~/Documents/go_projects/src")
    (setq projectile-project-search-path '("~/Documents/go_projects/src")))
  (setq projectile-switch-project-action #'projectile-dired))

(use-package counsel-projectile
  :config (counsel-projectile-mode))

Magit

(use-package magit
  :commands (magit-status magit-get-current-branch)
  :custom
  (magit-display-buffer-function #'magit-display-buffer-same-window-except-diff-v1))

Rainbow-Delimiters

(use-package rainbow-delimiters
  :hook (prog-mode . rainbow-delimiters-mode))

File Management

  (use-package dired
    :ensure nil
    :commands (dired dired-jump)
    :bind (("C-x C-j" . dired-jump))
    :custom  ((dired-listing-switches "-agho --group-directories-first"))
    :config
    (evil-collection-define-key 'normal 'dired-mode-map
      "h" 'dired-single-up-directory
      "l" 'dired-single-buffer))

(use-package dired-single)
(use-package all-the-icons-dired
  :hook (dired-mode . all-the-icons-dired-mode))

Development

Languages

Language Servers

  (defun gg/lsp-mode-setup()
    (setq lsp-headerline-breadcrumb-segments '(path-up-to-project file symbols))
    (lsp-headerline-breadcrumb-mode))

  (use-package lsp-mode
    :commands (lsp lsp-deferred)
    :hook (lsp-mode . gg/lsp-mode-setup)
    :init
    (setq lsp-keymap-prefix "C-c l")
    :config
    (lsp-enable-which-key-integration t))

(use-package lsp-ui
  :hook (lsp-mode . lsp-ui-mode))

Company

  (use-package company
    :after lsp-mode
    :hook (lsp-mod . company-mode)
    :bind (:map company-active-map
                ("<tab>" . company-complete-selection))
            (:map lsp-mode-map
                ("<tab>" . company-indent-or-complete-common))
    :custom
    (company-minimum-prefix-length 1)
    (company-idle-delay 0.0))

(use-package company-box
  :hook (company-mode . company-box-mode))

Python

(use-package python-mode
  :ensure nil
  :hook (python-mode . lsp-deferred)
  :custom
  (python-shell-interpreter "python3"))

Go

(defun lsp-go-install-save-hooks ()
  (add-hook 'before-save-hook #'lsp-format-buffer t t)
  (add-hook 'before-save-hook #'lsp-organize-imports t t))
(add-hook 'go-mode-hook #'lsp-go-install-save-hooks)

(use-package go-mode
  :ensure nil
  :hook (go-mode . lsp-deferred))