Pass old and new screen position with Anchor/Cursor move events

src/app/anchor.coffee

@@ -54,7 +54,7 @@ class Anchor
     @screenPosition.row
 
   setScreenPosition: (position, options={}) ->
-    previousScreenPosition = @screenPosition
+    oldScreenPosition = @screenPosition
     @screenPosition = Point.fromObject(position)
     clip = options.clip ? true
     assignBufferPosition = options.assignBufferPosition ? true
@@ -65,8 +65,12 @@ class Anchor
     Object.freeze @screenPosition
     Object.freeze @bufferPosition
 
-    unless @screenPosition.isEqual(previousScreenPosition)
-      @trigger 'moved', @screenPosition, bufferChange: options.bufferChange, autoscroll: options.autoscroll
+    unless @screenPosition.isEqual(oldScreenPosition)
+      @trigger 'moved',
+        oldScreenPosition: oldScreenPosition
+        newScreenPosition: @screenPosition
+        bufferChange: options.bufferChange
+        autoscroll: options.autoscroll
 
   refreshScreenPosition: (options={}) ->
     return unless @editSession

src/app/cursor-view.coffee

@@ -19,7 +19,7 @@ class CursorView extends View
   shouldPauseBlinking: false
 
   initialize: (@cursor, @editor) ->
-    @cursor.on 'moved.cursor-view', (screenPosition, { autoscroll }) =>
+    @cursor.on 'moved.cursor-view', ({ autoscroll }) =>
       @needsUpdate = true
       @shouldPauseBlinking = true
       @needsAutoscroll = (autoscroll ? true) and @cursor?.isLastCursor()

src/app/selection.coffee

@@ -12,8 +12,8 @@ class Selection
   constructor: ({@cursor, @editSession}) ->
     @cursor.selection = this
 
-    @cursor.on 'moved.selection', (e) =>
-      @screenRangeChanged() unless e.bufferChange
+    @cursor.on 'moved.selection', ({bufferChange}) =>
+      @screenRangeChanged() unless bufferChange
 
     @cursor.on 'destroy.selection', =>
       @cursor = null