meta-} goes to next buffer

spec/app/editor-spec.coffee

@@ -2096,3 +2096,21 @@ describe "Editor", ->
       eventHandler.reset()
       editor.buffer.setPath("new.txt")
       expect(eventHandler).toHaveBeenCalled()
+
+
+  fdescribe ".loadNextEditorState()", ->
+    it "loads the next editor state and wraps to beginning when end is reached", ->
+      buffer0 = new Buffer("0")
+      buffer1 = new Buffer("1")
+      buffer2 = new Buffer("2")
+      editor = new Editor {buffer: buffer0}
+      editor.setBuffer(buffer1)
+      editor.setBuffer(buffer2)
+
+      expect(editor.buffer.path).toBe "2"
+      editor.loadNextEditorState()
+      expect(editor.buffer.path).toBe "0"
+      editor.loadNextEditorState()
+      expect(editor.buffer.path).toBe "1"
+      editor.loadNextEditorState()
+      expect(editor.buffer.path).toBe "2"

src/app/editor.coffee

@@ -84,6 +84,7 @@ class Editor extends View
     @on 'split-up', => @splitUp()
     @on 'split-down', => @splitDown()
     @on 'close', => @remove(); false
+    @on 'show-next-buffer', => @loadNextEditorState()
 
     @on 'move-to-top', => @moveCursorToTop()
     @on 'move-to-bottom', => @moveCursorToBottom()
@@ -223,12 +224,18 @@ class Editor extends View
 
   setEditorStateForBuffer: (buffer, editorState) ->
     editorState.buffer = buffer
-    existingEditorState = @getEditorStateForBuffer(buffer)
-    if existingEditorState
-      _.extend(existingEditorState, editorState)
+    index = @indexOfEditorState(editorState)
+    if index?
+      @editorStates[index] = editorState
     else
       @editorStates.push(editorState)
 
+  indexOfEditorState: (editorState) ->
+    for o, i in @editorStates
+      return i if o.buffer.id == editorState.buffer.id
+
+    return null
+
   loadEditorStateForBuffer: (buffer) ->
     editorState = @getEditorStateForBuffer(buffer)
     if not editorState
@@ -238,6 +245,12 @@ class Editor extends View
     @scroller.scrollTop(editorState.scrollTop ? 0)
     @scroller.scrollLeft(editorState.scrollLeft ? 0)
 
+  loadNextEditorState: ->
+    index = @indexOfEditorState(@getEditorState())
+    if index?
+      nextIndex = (index + 1) % @editorStates.length
+      @setEditorState(@editorStates[nextIndex])
+
   setEditorState: (editorState={}) ->
     buffer = editorState.buffer ?= new Buffer
     @setEditorStateForBuffer(buffer, editorState)

src/app/keymaps/editor.coffee

@@ -30,4 +30,5 @@ window.keymap.bindKeys '.editor',
   'alt-meta-up': 'split-up'
   'alt-meta-down': 'split-down'
   'meta-[': 'outdent-selected-rows'
-  'meta-]': 'indent-selected-rows'
+  'meta-]': 'indent-selected-rows'
+  'meta-}': 'show-next-buffer'