init.el march 8, 2018

init.el

;; JHL Emacs Configuration 2018-03-08

;; confirm before exit
(setq confirm-kill-emacs 'y-or-n-p)

;; Remove GUI 
(if (fboundp 'scroll-bar-mode) (scroll-bar-mode -1))
(if (fboundp 'tool-bar-mode) (tool-bar-mode -1))
(if (fboundp 'menu-bar-mode) (menu-bar-mode -1))

;; Simplify Startup
(modify-frame-parameters nil '((wait-for-wm . nil)))
(setq inhibit-startup-message t)

;; Inconsolata.
; requires ~/.fonts/Inconsolata.otf
(set-default-font "-unknown-Inconsolata-normal-normal-normal-*-20-*-*-*-m-0-iso10646-1")
(add-to-list 'default-frame-alist '(font . "-unknown-Inconsolata-normal-normal-normal-*-20-*-*-*-m-0-iso10646-1"))

;; Backups in hidden folder 
(setq
   backup-by-copying t      
   backup-directory-alist
    '(("." . "~/.emacs.d/saves"))    
   delete-old-versions t
   kept-new-versions 6
   kept-old-versions 2
   version-control t)       
; ...

;; Reverse window switching
(defun select-previous-window ()
  "Switch to the previous window" 
  (interactive)
  (select-window (previous-window)))
(global-set-key (kbd "C-x p") 'select-previous-window)

;; Snake controls WASD
(eval-after-load "snake"
  '(progn
     (define-key snake-mode-map "w" 'snake-move-up)
     (define-key snake-mode-map "a" 'snake-move-left)
     (define-key snake-mode-map "s" 'snake-move-down)
     (define-key snake-mode-map "d" 'snake-move-right)))

;; Format Conventions
(setq c-default-style "linux"
      c-basic-offset 4)

;; Increment number at point
(defun my-increment-number-decimal (&optional arg)
  "Increment the number forward from point by 'arg'."
  (interactive "p*")
  (save-excursion
    (save-match-data
      (let (inc-by field-width answer)
        (setq inc-by (if arg arg 1))
        (skip-chars-backward "0123456789")
        (when (re-search-forward "[0-9]+" nil t)
          (setq field-width (- (match-end 0) (match-beginning 0)))
          (setq answer (+ (string-to-number (match-string 0) 10) inc-by))
          ;;(when (< answer 0)
          ;;  (setq answer (+ (expt 01 field-width) answer)))
          (replace-match (format (concat "%0" (int-to-string field-width) "d")
                                 answer)))))))

(global-set-key (kbd "C-c +") 'my-increment-number-decimal)

(if (string= default-directory "/")
    (cd "~"))


;; arduino files open in c++ mode

(add-to-list 'auto-mode-alist '("\\.ino\\'" . c++-mode))


;; add melpa

(require 'package)
(add-to-list 'package-archives
             '("melpa" . "http://melpa.org/packages/") t)