dots-of-war/files/.emacs.d/config.org

#+TITLE: Emacs Config

* General Settings

=cl-lib= adds a few things from common-lisp emulation, adding things like =cl-loop=

#+begin_src emacs-lisp
(use-package cl-lib)
#+end_src

** Sane defaults

Typing =:ensure t= everywhere is very bothersome so I'd rather *not* do that.
This automatically adds =:ensure t= everyhwere!

#+BEGIN_SRC emacs-lisp
  (require 'use-package-ensure)
  (setq use-package-always-ensure t)
#+END_SRC



Don't create all the custom things.

#+BEGIN_SRC emacs-lisp
  (defconst custom-file "/dev/null")
#+END_SRC

I don't want my Emacs to create loads of backup files, swap files, etc.

#+BEGIN_SRC emacs-lisp
  (setq make-backup-files nil)
  (setq auto-save-default nil)
#+END_SRC

Nor do I need all the (Windows 2000-esque) UI.

#+BEGIN_SRC emacs-lisp
  (scroll-bar-mode -1)
  (tool-bar-mode -1)
  (tooltip-mode -1)
  (menu-bar-mode -1)
#+END_SRC

When I fire up Emacs I want to be greeted with an empty =*scratch*= buffer, not the weird GNU screen.

#+BEGIN_SRC emacs-lisp
  (setq inhibit-splash-screen t
        initial-scratch-message "")
#+END_SRC

The whole yes or no prompt takes too much time to type out. y and n is much better.

#+BEGIN_SRC emacs-lisp
  (defalias 'yes-or-no-p 'y-or-n-p)
#+END_SRC

UTF-8 is good and should be the default for everything.

#+BEGIN_SRC emacs-lisp
  (setq locale-coding-system 'utf-8)
  (set-terminal-coding-system 'utf-8)
  (set-keyboard-coding-system 'utf-8)
  (set-selection-coding-system 'utf-8)
  (prefer-coding-system 'utf-8)
#+END_SRC

Disable the bell, as the audible bell is highly anoying and pointless

#+begin_src emacs-lisp
(setq visible-bell 1)
#+end_src
** Restart emacs
   
Restarting emacs from within emacs!

#+BEGIN_SRC emacs-lisp
(use-package restart-emacs
	:config
	(setq restart-emacs-restore-frames t))
#+END_SRC

** disable clipboard whatever


Clipboard shit is fucked, so this is necessary to unfuck.

#+BEGIN_SRC emacs-lisp
	(setq x-select-enable-clipboard-manager nil)
#+END_SRC

** Store recent files
   
#+BEGIN_SRC emacs-lisp
(recentf-mode 1)
(setq recentf-max-menu-items 25)
(setq recentf-max-saved-items 25)
;; (run-at-time nil (* 5 60) 'recentf-save-list)
#+END_SRC

** Which-key
   
Which key makes Emacs self documenting.

#+BEGIN_SRC emacs-lisp
  (use-package which-key
    :config
	(setq which-key-idle-delay 0.25)
    (which-key-mode 1))
#+END_SRC

** VTerm
   
#+begin_src emacs-lisp
(use-package vterm)
#+end_src

* Looks
** indentation 

#+BEGIN_SRC emacs-lisp
  (setq-default tab-width 4)
  (setq-default indent-tabs-mode nil)
#+END_SRC

** Font

#+BEGIN_SRC emacs-lisp
  (add-to-list 'default-frame-alist
               '(font . "Iosevka Medium"))
#+END_SRC

** COMMENT Line numbers

#+BEGIN_SRC emacs-lisp
  (use-package linum-relative
    :config
    (setq linum-relative-backend 'display-line-numbers-mode)
    (linum-relative-global-mode 1))
#+END_SRC

** Color Theme

#+BEGIN_SRC emacs-lisp
  (use-package gruvbox-theme
    :config
    (load-theme 'gruvbox-dark-medium t))
#+END_SRC

** Beacon

Highlights the cursor each time I switch windows.

#+BEGIN_SRC emacs-lisp
  (use-package beacon
    :config
    (beacon-mode 1))
#+END_SRC

** Fringe
   
Ugly.

#+BEGIN_SRC emacs-lisp
  (fringe-mode '(10 . 10))
#+END_SRC

** Line-wrapping
Line wrapping is confusing, more than anything else.
Thus, let's disable it!
#+begin_src emacs-lisp
(setq-default truncate-lines 1)
#+end_src

** Org-mode codeblocks

Let's make org-mode codeblocks look good!

For this, we first set the code-block background and make it extend to the full width.
#+begin_src emacs-lisp
  (set-face-attribute 'org-block nil
                      :background "#1d2021"
                      :extend t)
#+end_src

Additionally, we make the top and bottom lines of the block smaller and darker.
#+begin_src emacs-lisp
  (cl-loop for face in '(org-block-begin-line org-block-end-line) do
        (set-face-attribute face nil
                            :foreground "#504945"
                            :background  "#1a1d1e"
                            :height 0.8
                            :extend t))
#+end_src

** COMMENT Mode-line

#+begin_src emacs-lisp

  (use-package telephone-line
	  :config
	  (setq telephone-line-lhs
			  '((evil   . (telephone-line-evil-tag-segment))
			  (blue . (telephone-line-vc-segment
						  telephone-line-process-segment))
			  (nil . (telephone-line-buffer-segment))))
	  (setq telephone-line-rhs
			  '((nil    . (telephone-line-misc-info-segment))
			  (accent . (telephone-line-major-mode-segment))
			  (evil   . (telephone-line-airline-position-segment))))
	  (setq telephone-line-primary-left-separator 'telephone-line-cubed-left
			telephone-line-secondary-left-separator 'telephone-line-cubed-hollow-left
			telephone-line-primary-right-separator 'telephone-line-cubed-right
			telephone-line-secondary-right-separator 'telephone-line-cubed-hollow-right)
	  (setq telephone-line-height 24
			telephone-line-evil-use-short-tag t)
	  (telephone-line-mode t))
#+end_src

** COMMENT doom-modeline

#+begin_src emacs-lisp

(use-package doom-modeline
    :config
	(setq doom-modeline-icon (display-graphic-p))
	(setq doom-modeline-env-version t)
	(setq doom-modeline-project-detection 'project)
	(setq doom-modeline-height 1)
	(doom-modeline-mode t))
#+end_src


#+begin_src emacs-lisp

  (use-package highlight-parentheses
	:config
	(highlight-parentheses-mode 1))
#+end_src

* Ivy

 Ivy for completing stuff, etc. is huge.

 #+BEGIN_SRC emacs-lisp
   (use-package counsel
     :config
     (ivy-mode)
	 (setq ivy-re-builders-alist '((t . ivy--regex-fuzzy)))
	 (setq ivy-initial-inputs-alist nil)

     :bind
     ("C-s" . swiper)
     ("M-x". counsel-M-x))
 #+END_SRC

Flx does fancy fuzzy matching with good sorting

 #+BEGIN_SRC emacs-lisp
   (use-package flx)
 #+END_SRC
 
* Projectile
#+begin_src emacs-lisp
(use-package projectile :config (projectile-mode t))
(use-package counsel-projectile :after projectile counsel)
#+end_src


fix the naming for which-key

#+begin_src emacs-lisp
(add-to-list 'which-key-replacement-alist
	'((nil . "projectile-\\([[:alnum:]-]+\\)") . (nil . "\\1")))
#+end_src

* general.el

#+BEGIN_SRC emacs-lisp
  (use-package general
    :config
    (general-evil-setup)
    (general-def
      :states '(normal motion)
      "SPC" nil)

    (general-create-definer elk-noleader-def
      :states '(normal motion)
      :keymaps 'override)
    (general-create-definer elk-leader-def
      :prefix "SPC"
      :states '(normal motion)
      :keymaps 'override)
    (elk-leader-def
      "a" 'org-agenda
      "s" 'org-store-link
      "t" '((lambda () (interactive) (org-capture nil "t")) :wk "org-capture whatever")
      "f" '(counsel-find-file :wk "open a file")
      "1" 'delete-other-windows
      "0" 'delete-window
      "p" '(:keymap projectile-command-map :wk "Project")
      )

    (which-key-add-key-based-replacements "SPC y" "Emacs stuff")
    (elk-leader-def
      :prefix "SPC y"
      "c" '((lambda () (interactive) (find-file "~/.emacs.d/config.org")) :wk "open config.org")
      "r" '((lambda () (interactive) (load-file "~/.emacs.d/init.el")) :wk "reload config.org")))
#+END_SRC

* Window management
#+BEGIN_SRC emacs-lisp
  (which-key-add-key-based-replacements "SPC b" "Window management")
  (elk-leader-def
	:prefix "SPC b"
	"c" '(kill-buffer-and-window :wk "close window and buffer")
	"w" '(delete-window :wk "close window")
	"f" '(counsel-buffer-or-recentf :wk "Switch to file")
	"b" '(counsel-switch-buffer :wk "Switch buffer")
	"o" '(counsel-switch-buffer-other-window :wk "Switch buffer in other window")
	"d" '(kill-buffer :wk "close buffer")
	"s" '(split-window-below :wk "h-split")
	"v" '(split-window-right :wk "v-split"))
#+END_SRC

* Editing
** evil-mode

Emacs is lacks a good editor.

#+BEGIN_SRC emacs-lisp
  (use-package evil
    :init
    (setq evil-want-keybinding nil)
	(setq evil-want-C-u-scroll t)
	(setq evil-want-fine-undo 'fine)
	(setq evil-undo-system 'undo-tree)
    :config
    (evil-mode 1))
#+END_SRC


*** evil-org-mode

 #+BEGIN_SRC emacs-lisp
   (use-package evil-org
     :after org
     :config
     (add-hook 'org-mode-hook 'evil-org-mode)
     (add-hook 'evil-org-mode-hook
		   (lambda ()
		 (evil-org-set-key-theme)))
     (require 'evil-org-agenda)
     (evil-org-agenda-set-keys))
 #+END_SRC


*** evil-collection

 Keybinds for common modes.
 Makes evil work everywhere.

 #+BEGIN_SRC emacs-lisp
 (use-package evil-collection
	:after evil
	:config
	(evil-collection-init))
 #+END_SRC

*** evil-surround

 #+BEGIN_SRC emacs-lisp
 (use-package evil-surround
	:after evil
	:config
	(global-evil-surround-mode t))
 #+END_SRC

** Undo-tree
   
Undo tree is based.

#+BEGIN_SRC emacs-lisp
  (use-package undo-tree
    :config
    (global-undo-tree-mode t)
    (setq undo-tree-auto-save-history t)
    (push '("." . "~/.emacs.d/undo-tree-history") undo-tree-history-directory-alist))
#+END_SRC

** ace-jump
   
Jump through the code faster than ever before!

#+BEGIN_SRC emacs-lisp
  (use-package ace-jump-mode)
  (elk-leader-def "x" 'ace-jump-mode)
#+END_SRC

** Multicursor
Install the package and set up some binds!
#+begin_src emacs-lisp
  (use-package evil-mc :config (evil-mc-mode 1))
  
  (which-key-add-key-based-replacements "SPC d" "Multicursor")
  (elk-leader-def
	  :prefix "SPC d"
	  "j" '(evil-mc-make-cursor-move-next-line :wk "cursor below")
	  "u" '(evil-mc-undo-last-added-cursor  :wk "undo cursor")
	  "d" '(evil-mc-undo-all-cursors  :wk "remove all cursors")
	  "n" '(evil-mc-make-and-goto-next-match  :wk "next match")
	  "m" '(evil-mc-skip-and-goto-next-match  :wk "skip and next match")
	  "s" '(evil-mc-make-cursor-in-visual-selection-beg  :wk "cursor at selection"))
#+end_src

* Git integration
** Diff-hl gitgutter
#+BEGIN_SRC emacs-lisp
  (use-package diff-hl :config (diff-hl-mode t))
#+END_SRC

** Magit
#+BEGIN_SRC emacs-lisp
  (use-package magit)
  (use-package evil-magit)

  (which-key-add-key-based-replacements "SPC g" "Git shit")
  (elk-leader-def
	:prefix "SPC g"
	"s" '(magit-status :wk "status"))
#+END_SRC

* Code stuff
** general builtin stuff
   
enable highlighting matching parentheses

#+begin_src emacs-lisp
(show-paren-mode 1)
(setq show-paren-delay 0)
#+end_src

let's also turn lambdas into _actual_ lambdas:
#+begin_src emacs-lisp
(global-prettify-symbols-mode t)
#+end_src

** Rainbow everything!
because rainbows are fabulous!
#+BEGIN_SRC emacs-lisp
  (use-package rainbow-delimiters :config (rainbow-delimiters-mode t))
  (use-package rainbow-blocks :config (rainbow-blocks-mode t))
#+END_SRC
** Nerdcommenter
#+BEGIN_SRC emacs-lisp
  (use-package evil-nerd-commenter)
  (which-key-add-key-based-replacements "SPC c" "Commenting")
  (elk-leader-def
	:prefix "SPC c"
	"SPC" '(evilnc-comment-or-uncomment-lines :wk "toggle comment")
	"c" '(evilnc-copy-and-comment-lines :wk "copy and comment"))
#+END_SRC

* Language support
** LSP-mode
#+begin_src emacs-lisp
  (use-package lsp-mode
    :hook (;; replace XXX-mode with concrete major-mode(e. g. python-mode)
           (rustic . lsp)
           (lsp-mode . lsp-enable-which-key-integration))
    :commands lsp)

  (use-package company)
  (use-package lsp-ui :commands lsp-ui-mode)
  (use-package lsp-ivy :commands lsp-ivy-workspace-symbol)
  (use-package lsp-treemacs :commands lsp-treemacs-errors-list)
  (use-package dap-mode)
  ;; (use-package dap-LANGUAGE) to load the dap adapter for your language
#+end_src
** Rust

#+begin_src emacs-lisp
  (use-package rustic)
#+end_src

** Lisp
*** parinfer

Install the plugin

#+BEGIN_SRC emacs-lisp
  (use-package parinfer
    :ensure t
    :init
    (progn
      (setq parinfer-lighters '("Parinfer:Indent" . "Parinfer:Paren"))
      (setq parinfer-auto-switch-indent-mode t)
      (setq parinfer-extensions '(defaults pretty-parens evil smart-tab smart-yank))
      (add-hook 'emacs-lisp-mode-hook #'parinfer-mode))) 
#+END_SRC

and set up some keybinds!

#+BEGIN_SRC emacs-lisp
  (elk-leader-def
	:prefix "SPC m" "-" '(parinfer-toggle-mode :wk "toggle parinfer mode"))
#+END_SRC


Also, let's integrate it with out bar:

- TODO Fix this

#+BEGIN_SRC emacs-lisp
  (defun update-parinfer-mode-status (x)
    (setq global-mode-string (format "%s" x parinfer--mode)))
  (add-hook 'parinfer-switch-mode-hook 'update-parinfer-mode-status)
#+END_SRC