dotfiles/emacs/emacs

;;;; init.el                                     -*- lexical-binding: t; -*-

(require 'package)

;;; either the stable version:
(add-to-list
   'package-archives
   ;; '("melpa" . "http://stable.melpa.org/packages/") ; many packages won't show if using stable
   '("melpa" . "http://melpa.milkbox.net/packages/")
   t)

;; Added by Package.el.  This must come before configurations of
;; installed packages.  Don't delete this line.  If you don't want it,
;; just comment it out by adding a semicolon to the start of the line.
;; You may delete these explanatory comments.
(package-initialize)

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

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

(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 (quote (mustang)))
 '(custom-safe-themes
   (quote
    ("6c0a087a4f49c04d4002393ffd149672f70e4ab38d69bbe8b39059b61682b61c" default)))
 '(inhibit-startup-screen t)
 '(package-selected-packages
   (quote
    (rust-mode evil-quickscope evil-tabs ## scala-mode evil-leader editorconfig diff-hl neotree helm-ag helm-projectile projectile helm hlinum fill-column-indicator evil mustang-theme cider))))
(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.
 )

(menu-bar-mode 0)
(tool-bar-mode 0)

(add-to-list 'load-path "~/.emacs.d/evil")
(require 'evil)
(evil-mode 1)

(require 'goto-last-change)

(show-paren-mode 1)

(require 'whitespace)
(setq whitespace-style '(face empty tabs lines-tail trailing))
(global-whitespace-mode t)

(require 'fill-column-indicator)
(setq-default fill-column 80)
(define-globalized-minor-mode global-fci-mode fci-mode (lambda () (fci-mode 1)))  
(global-fci-mode 1)

(require 'powerline)
(powerline-center-evil-theme)

(define-key evil-normal-state-map (kbd "C-w <down>") 'evil-window-down)
(define-key evil-normal-state-map (kbd "C-w <up>") 'evil-window-up)
(define-key evil-normal-state-map (kbd "C-w <right>") 'evil-window-right)
(define-key evil-normal-state-map (kbd "C-w <left>") 'evil-window-left)
(define-key evil-normal-state-map (kbd "-") 'find-file)

; most of this stuff was taken from https://brainlessdeveloper.com/2017/12/27/making-emacs-work-like-my-vim-setup/
; and https://github.com/brainlessdeveloper/emacs.d


; line numbers
(global-linum-mode 1)
(defun configure-linum-colors () 
  (set-face-foreground 'linum "#555555"))
(configure-linum-colors)
(setq linum-format " %4d ")

; highlights the current line
(use-package hlinum
  :ensure t)
(set-face-foreground 'linum-highlight-face "white")
(set-face-background 'linum-highlight-face nil)
(hlinum-activate)

; display line and column in the statusbar
(line-number-mode 1)
(column-number-mode 1)

; don't show startup messages
(setq inhibit-startup-message t)
(setq initial-scratch-message nil)

; auto-pairs
(electric-pair-mode 1)

; scala support
(use-package scala-mode
  :interpreter
  ("scala" . scala-mode))

; rust support

; neotree is a nerdtree like
(use-package neotree :ensure t)

(evil-define-key 'normal neotree-mode-map (kbd "TAB") 'neotree-enter)
(evil-define-key 'normal neotree-mode-map (kbd "SPC") 'neotree-quick-look)
(evil-define-key 'normal neotree-mode-map (kbd "q") 'neotree-hide)
(evil-define-key 'normal neotree-mode-map (kbd "RET") 'neotree-enter)

; git gutters
(use-package diff-hl
  :ensure t
  :init
    (setq diff-hl-side 'right))
(global-diff-hl-mode 1)
(diff-hl-margin-mode 1)
(diff-hl-flydiff-mode 1)

; install editorconfig
(use-package editorconfig
  :ensure t
  :config
  (editorconfig-mode 1))

; install evil-leader and set it as space
(use-package evil-leader
:ensure t
:config
(global-evil-leader-mode))
(evil-leader/set-leader "<SPC>")

(evil-leader/set-key
  "q" 'kill-buffer-and-window
  "w" 'save-buffer
  "t" 'neotree-toggle
)

; answer questions with 'y' instead of full 'yes'
(defalias 'yes-or-no-p 'y-or-n-p)