NOTE: This now has its own repository: https://github.com/lancelet/dotemacs Yes, it's sad, I know. My .emacs file. It comes with an accompanying shell script which sets up the ~/.emacs.d/vendor directory with required additions. This isn't guaranteed to work for anyone but me.

.emacs

;---------------------------------------;
; JONATHAN MERRITT'S EMACS STARTUP FILE ;
;---------------------------------------;
; Setup:
;
; 1. Create vendor directory:
;   > mkdir -p ~/.emacs.d/vendor
;
; 2. Install milkypostman/powerline (cute status bar / modeline):
;   > cd ~/.emacs.d/vendor
;   > git clone https://github.com/milkypostman/powerline.git
;
; 3. Install ensime (scala mode for emacs):
;   > cd ~/.emacs.d/vendor
;   > wget https://www.dropbox.com/sh/ryd981hq08swyqr/ZiCwjjr_vm/ENSIME%20Releases/ensime_2.10.0-0.9.8.9.tar.gz
;   > tar -xzf ensime_2.10.0-0.9.8.9.tar.gz
;   > rm ensime_2.10.0-0.9.8.9.tar.gz
;
; 4. Install julia mode:
;   > cd ~/.emacs.d/vendor
;   > wget https://raw.github.com/JuliaLang/julia/master/contrib/julia-mode.el

; Default font
(set-default-font "-apple-Inconsolata-light-normal-normal-*-14-*-*-*-m-0-iso10646-1")

; Set fullscreen shortcut key to be M-RET
(defun toggle-fullscreen ()
  "Toggle full screen"
  (interactive)
  (when window-system
    (set-frame-parameter
     nil 'fullscreen
     (when (not (frame-parameter nil 'fullscreen)) 'fullboth)) ))
(global-set-key (kbd "M-RET") 'toggle-fullscreen)

; Visual customizations
(tool-bar-mode 0)               ; turn off tool bar
(setq inhibit-splash-screen t)  ; no splash
(setq visible-bell 1)           ; visible bell (square in the middle of the screen) - not audio

; Window size
(if (window-system)
    (set-frame-size (selected-frame) 120 30))

; Stop emacs from saving backup files
(setq make-backup-files nil)

; Emacs powerline (cute modeline / status bar graphics)
(add-to-list 'load-path "~/.emacs.d/vendor/powerline")
(require 'powerline)
(set-face-attribute 'powerline-active1 nil :box nil :foreground "LightGrey")
(set-face-attribute 'powerline-active2 nil :box nil)
(set-face-attribute 'mode-line nil :box nil :background "OliveDrab3" :foreground "grey14")
(set-face-attribute 'powerline-inactive1 nil :box nil)
(set-face-attribute 'powerline-inactive2 nil :box nil)
(set-face-attribute 'mode-line-inactive nil :box nil)
(set-face-attribute 'mode-line-highlight nil :box nil)
(powerline-default-theme)
(add-hook 'window-setup-hook 'powerline-reset)  ; get coloring of arrows correct

; Package mechanism
(require 'package)
(add-to-list 'package-archives
       '("melpa" . "http://melpa.milkbox.net/packages/") t)
(package-initialize)

; Color theme
(unless (package-installed-p 'color-theme)
  (package-refresh-contents) (package-install 'color-theme))
(require 'cl)
(require 'color-theme)
(color-theme-initialize)
(color-theme-charcoal-black)
(set-face-background 'region "#304030")

; Scala-mode 2
(unless (package-installed-p 'scala-mode2)
  (package-refresh-contents) (package-install 'scala-mode2))

; Column marker
(unless (package-installed-p 'column-marker)
  (package-refresh-contents) (package-install 'column-marker))
(require 'column-marker)
(add-hook 'scala-mode-hook (lambda () (interactive) (column-marker-1 120)))
(column-number-mode)

; Ensime
(add-to-list 'load-path "~/.emacs.d/vendor/ensime_2.10.0-0.9.8.9/elisp/")
(require 'ensime)
(add-hook 'scala-mode-hook 'ensime-scala-mode-hook)

; Haskell mode
(unless (package-installed-p 'haskell-mode)
  (package-refresh-contents) (package-install 'haskell-mode))
(require 'haskell-mode)
(custom-set-variables '(haskell-mode-hook '(turn-on-haskell-indentation)))

; Sr-Speedbar
(unless (package-installed-p 'sr-speedbar)
  (package-refresh-contents) (package-install 'sr-speedbar))
(require 'sr-speedbar)

; Smooth scrolling
(unless (package-installed-p 'smooth-scrolling)
  (package-refresh-contents) (package-install 'smooth-scrolling))
(require 'smooth-scrolling)
; scroll one line at a time (less "jumpy" than defaults)
(setq mouse-wheel-scroll-amount '(1 ((shift) . 1))) ; one line at a time
(setq mouse-wheel-progressive-speed nil) ; don't accelerate scrolling
(setq mouse-wheel-follow-mouse 't) ; scroll window under mouse
(setq scroll-step 1) ; keyboard scroll one line at a time

; Julia language syntax highlighting
(load "~/.emacs.d/vendor/julia-mode.el")
(require 'julia-mode)

; Set parameters for video recording
(defun set-for-recording ()
  "Set up for video screencast (half of 1280x720)"
  (interactive)
  (set-default-font "-apple-Inconsolata-light-normal-normal-*-18-*-*-*-m-0-iso10646-1")
  (powerline-reset)
  (scroll-bar-mode -1)
  (set-frame-size (selected-frame) 71 38) 
)

; Additions to the exec-path
(setq exec-path (append exec-path `("/usr/local/bin")))

; Set JAVA_HOME to use JDK 8
(setq jdk-dir "/Library/Java/JavaVirtualMachines/jdk1.8.0_b87.jdk")
(setq java-home (concat jdk-dir "/Contents/Home"))
(setenv "JAVA_HOME" java-home)

emacs-setup.sh

#!/bin/bash

echo "--------------------------------------------"
echo "| Setting up for Jonathan Merritt's EMACS! |"
echo "--------------------------------------------"

if [ -d "~/.emacs.d/vendor" ]; then
    echo "Creating vendor directory ~/.emacs.d/vendor"
    mkdir -p ~/.emacs.d/vendor
fi

echo "Updating / installing milkypostman/powerline (cute status bar / modeline)"
cd ~/.emacs.d/vendor
if [ -d "powerline" ]; then
    echo "--> already installed; updating via git"
    cd powerline
    git pull
else
    echo "--> not installed; performing a git clone"
    git clone https://github.com/milkypostman/powerline.git
fi

echo "Ensime (scala mode for emacs)"
cd ~/.emacs.d/vendor
if [ ! -d "ensime_2.10.0-0.9.8.9" ]; then
    echo "--> not installed, doing a wget and extraction"
    wget https://www.dropbox.com/sh/ryd981hq08swyqr/ZiCwjjr_vm/ENSIME%20Releases/ensime_2.10.0-0.9.8.9.tar.gz
    tar xzf ensime_2.10.0-0.9.8.9.tar.gz
    rm ensime_2.10.0-0.9.8.9.tar.gz
else
    echo "--> already installed"
fi

echo "Julia mode"
cd ~/.emacs.d/vendor
if [ ! -e "julia-mode.el" ]; then
    echo "--> not installed, doing a wget"
    wget https://raw.github.com/JuliaLang/julia/master/contrib/julia-mode.el
else
    echo "--> already installed"
fi