Add ctrl-Z keybinding to checkout HEAD revision

src/app/editor.coffee

@@ -8,7 +8,7 @@ CursorView = require 'cursor-view'
 SelectionView = require 'selection-view'
 Native = require 'native'
 fs = require 'fs'
-
+Git = require 'git'
 $ = require 'jquery'
 _ = require 'underscore'
 
@@ -154,6 +154,7 @@ class Editor extends View
         'editor:show-previous-buffer': @loadPreviousEditSession
         'editor:toggle-line-comments': @toggleLineCommentsInSelection
         'editor:log-cursor-scope': @logCursorScope
+        'editor:checkout-head-revision': @checkoutHead
 
     documentation = {}
     for name, method of editorBindings
@@ -274,6 +275,11 @@ class Editor extends View
   setInvisibles: (@invisibles={}) ->
     @renderLines()
 
+  checkoutHead: ->
+    if path = @getPath()
+      if new Git(path).checkoutHead(path)
+        @trigger 'editor-git-status-change'
+
   setText: (text) -> @getBuffer().setText(text)
   getText: -> @getBuffer().getText()
   getPath: -> @getBuffer().getPath()

src/app/keymaps/git.coffee

@@ -0,0 +1,2 @@
+window.keymap.bindKeys '.editor',
+  'ctrl-Z': 'editor:checkout-head-revision'

src/app/status-bar.coffee

@@ -40,6 +40,8 @@ class StatusBar extends View
     @updateCursorPositionText()
     @editor.on 'cursor-move', => _.delay (=> @updateCursorPositionText()), 50
 
+    @editor.on 'editor-git-status-change', => @updateStatusBar()
+
     @subscribeToBuffer()
 
   subscribeToBuffer: ->