Allow scrollPastEnd to be updated in TextEditor.prototype.update

spec/text-editor-spec.coffee

@@ -100,7 +100,7 @@ describe "TextEditor", ->
       editor.onDidChange(changeSpy = jasmine.createSpy('onDidChange'))
       editor.update({
         tabLength: 6, softTabs: false, softWrapped: true, editorWidthInChars: 40,
-        ignoreInvisibles: true, mini: false, lineNumberGutterVisible: false
+        ignoreInvisibles: true, mini: false, lineNumberGutterVisible: false, scrollPastEnd: true
       })
       expect(changeSpy.callCount).toBe(1)
       expect(editor.getTabLength()).toBe(6)
@@ -110,6 +110,7 @@ describe "TextEditor", ->
       expect(editor.getInvisibles()).toEqual({})
       expect(editor.isMini()).toBe(false)
       expect(editor.isLineNumberGutterVisible()).toBe(false)
+      expect(editor.getScrollPastEnd()).toBe(true)
 
   describe "config defaults", ->
     it "uses the `editor.tabLength`, `editor.softWrap`, and `editor.softTabs`, and `core.fileEncoding` config values", ->

src/text-editor.coffee

@@ -189,7 +189,7 @@ class TextEditor extends Model
   update: (params) ->
     {
       softTabs, tabLength, softWrapped, mini, placeholderText, lineNumberGutterVisible,
-      showInvisibles, ignoreInvisibles, editorWidthInChars
+      showInvisibles, ignoreInvisibles, editorWidthInChars, scrollPastEnd
     } = params
 
     resetDisplayLayer = false
@@ -226,6 +226,9 @@ class TextEditor extends Model
       @setEditorWidthInChars(editorWidthInChars, false)
       resetDisplayLayer = true
 
+    if scrollPastEnd? and scrollPastEnd isnt @scrollPastEnd
+      @setScrollPastEnd(scrollPastEnd)
+
     if resetDisplayLayer
       @resetDisplayLayer()