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adisbladis/adis_emacs.org

Created October 20, 2016 13:35
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adisbladis emacs config
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adis_emacs.org

Adisbladis emacs configuration

Bootstrap this configuration

This configuration is designed to follow the XDG guidelines. This means that I configure locations for files of quite a lot of things.

To use this configuration of Emacs, save this file in ~/.config/emacs/config.org. You can download the file here.

This is a minimal bootstrap which should live in ~/.emacs:

;; Define XDG directories
(setq-default user-emacs-config-directory
              (concat (getenv "HOME") "/.config/emacs"))
(setq-default user-emacs-data-directory
              (concat (getenv "HOME") "/.local/share/emacs"))
(setq-default user-emacs-cache-directory
              (concat (getenv "HOME") "/.cache/emacs"))

;; Load config
(org-babel-load-file (concat user-emacs-config-directory "/config.org"))

Emacs initialization

Add package sources and initialize the package manager

Set up package sources with HTTPS, specify where to store packages and initialize the package management.

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

(setq-default package-user-dir (concat user-emacs-cache-directory "/elpa"))

(package-initialize)

Install use-package if missing

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

(require 'use-package)

General configuration

Backup Files

Unless the $XGD_DATA_DIR/emacs/backup directory exists, create it. Then set as backup directory.

(let ((backup-dir (concat user-emacs-data-directory "/backup")))
  (unless (file-directory-p backup-dir)
    (mkdir backup-dir t))

  (setq-default backup-directory-alist (cons (cons "." backup-dir) nil)))

Lock-files

Disable creation of lock-files named .#<filename>.

(setq-default create-lockfiles nil)

Theme

(use-package lush-theme
  :ensure t
  :config
  (progn
    (load-theme 'lush t)
    (menu-bar-mode -1)
    (tool-bar-mode -1)
    (scroll-bar-mode -1)))

Set font

(add-to-list 'default-frame-alist '(font . "Inconsolata 12"))

Basic code style

(setq c-basic-indent 4)
(setq indent-line-function 'insert-tab)
(setq indent-tabs-mode nil)
(setq tab-stop-list '(4 8 12 16 20 24 28 32))
(setq-default indent-tabs-mode nil)
(setq-default tab-width 4)

Language modes

Python mode

(use-package jedi
  :ensure t
  :config
  (progn
    (add-hook 'python-mode-hook 'jedi:setup)
    (setq-default jedi:setup-keys t)
    (setq-default jedi:complete-on-dot t)))

Fish shell mode

(use-package fish-mode :ensure t)

Go mode

(use-package go-mode
  :ensure t
  :config
  (progn
    (add-hook 'before-save-hook 'gofmt-before-save)))

Web Mode

Install web-mode, set rules for filetypes and indent.

(use-package web-mode
  :ensure t
  :mode "\\.html\\'"
  :config
  (progn
    (setq-default web-mode-markup-indent-offset 4) ; HTML
    (setq-default web-mode-css-indent-offset 4)    ; CSS
    (setq-default web-mode-code-indent-offset 4))) ; JS/PHP/etc

Utilities

Git frontend

Install magit, bind C-x g to display the main magit popup and bind C-x M-g to display a magit popup with keybinds used in magit.

(use-package magit
  :ensure t
  :bind (("C-x g" . magit-status)     ; Display the main magit popup
         ("C-x M-g" . magit-dispatch-popup))) ; Display keybinds for magit

Autocomplete

(use-package company
  :ensure t
  :bind ("<backtab>" . company-complete)
  :config
  (progn
    ;; TODO: Keybind company-complete to something good
    (setq-default company-tooltip-minimum-width 15)

    (setq-default company-idle-delay 0.1)

    (global-company-mode)))

Fuzzy Matching

(use-package company-flx
  :ensure t
  :config
  (progn
    (with-eval-after-load 'company
      (company-flx-mode +1))))

Statistics for completions

(use-package company-statistics
  :ensure t
  :config
  (progn
    (setq-default company-statistics-file
                  (concat user-emacs-data-directory
                          "/company-statistics.dat"))
    (company-statistics-mode)))

go

Utilizes the program gocode as backend. Available in AUR as gocode-git.

(use-package company-go
  :ensure t
  :config
  (progn
    (add-hook 'go-mode-hook
              (lambda ()
                (unless (executable-find "gocode")
                  (error "Program: gocode is missing"))

                (set (make-local-variable 'company-backends) '(company-go))
                (company-mode t)))))

Fast file search

Install ag, frontend for ag - the_silver_searcher.

(use-package ag :ensure t)

Flexible ido matching

Load ido-mode with flx for flexible matching. Also move the history file to $XGD_DATA_DIR/emacs/ido.dat.

(use-package flx-ido
  :ensure t
  :config
  (progn
    ;; Flexible matching
    (setq-default ido-enable-flex-matching t)

    ;; Load ido-mode
    (ido-mode 1)
    (ido-everywhere 1)
    (flx-ido-mode 1)

    ;; History file
    (setq-default ido-save-directory-list-file
                  (concat user-emacs-data-directory "/ido.dat"))

    ;; Always open files in current frame
    (setq-default ido-default-file-method 'selected-window)

    ;; Always switch to buffers in current frame
    (setq-default ido-default-buffer-method 'selected-window)))
(ido-mode)

Smooth scrolling

This package makes Emacs scroll before cursor reach top or bottom which makes scrolling smoother.

(use-package smooth-scrolling
  :ensure t
  :config
  (progn
    (setq-default smooth-scroll-margin 2)))

Fancy search

(use-package swiper
  :ensure t
  :bind (("C-s" . swiper)
         ("C-r" . swiper))
  :config
  (progn
    (setq-default ivy-use-virtual-buffers t)))

Markdown

Handy when editing markdown.

(use-package markdown-mode :ensure t)

YAML

Handy when editing YAML/YML.

(use-package yaml-mode :ensure t)

webpaste

Paste whole buffers or parts of buffers to the internet.

(use-package webpaste
  :ensure t
  :bind (("C-c C-p C-b" . webpaste-paste-buffer)
         ("C-c C-p C-r" . webpaste-paste-region)))

Smart-mode-line

(use-package smart-mode-line
  :ensure t
  :config
  (progn
    (sml/setup)))

Flycheck

(use-package flycheck
  :ensure t
  :config
  (progn
    (global-flycheck-mode)))

Useless utilities

Nyan-mode

(use-package nyan-mode
  :ensure t
  :config
  (progn
      (nyan-mode)))
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