Merge pull request #1091 from atom/ks-autoscroll

Autoscroll on undo/redo

spec/editor-spec.coffee

@@ -958,6 +958,15 @@ describe "Editor", ->
           editor.insertText('\n\n')
           expect(editor.scrollToPixelPosition.callCount).toBe 1
 
+        it "autoscrolls on undo/redo", ->
+          spyOn(editor, 'scrollToPixelPosition')
+          editor.insertText('\n\n')
+          expect(editor.scrollToPixelPosition.callCount).toBe 1
+          editor.undo()
+          expect(editor.scrollToPixelPosition.callCount).toBe 2
+          editor.redo()
+          expect(editor.scrollToPixelPosition.callCount).toBe 3
+
         describe "when the last cursor exceeds the upper or lower scroll margins", ->
           describe "when the editor is taller than twice the vertical scroll margin", ->
             it "sets the scrollTop so the cursor remains within the scroll margin", ->

src/edit-session.coffee

@@ -574,10 +574,12 @@ class EditSession
 
   # Public: Undoes the last change.
   undo: ->
+    @getCursor().needsAutoscroll = true
     @buffer.undo(this)
 
   # Pulic: Redoes the last change.
   redo: ->
+    @getCursor().needsAutoscroll = true
     @buffer.redo(this)
 
   # Public: Folds all the rows.