Sublime Text 3 plugin to detect window modification (couldn't figure out how to update other window)

babelfish.py

# put this in /Users/adam/Library/Application Support/Sublime Text 3/Packages/User/babelfish.py

import sublime, sublime_plugin  
  
class Bablefish(sublime_plugin.EventListener):
  
  def on_modified(self, view):  
    print(view.file_name(), "modified")
    w = view.window()
    
    if w.num_groups() > 1:
      # todo: create secondary view if necessary
      views = w.views_in_group(1)

      print(len(views), "views") 
      output_view = views[0]
      ## output_view.begin_edit()

  def on_load(self, view):  
    print(view.file_name(), "just got loaded")

  def on_pre_save(self, view):  
    print(view.file_name(), "is about to be saved")

  def on_post_save(self, view):  
    print(view.file_name(), "just got saved")

  def on_new(self, view):  
    print("new file")

  def on_activated(self, view):  
    print(view.file_name(), "is now the active view")

  def on_close(self, view):  
    print(view.file_name(), "is no more")

  def on_clone(self, view):  
    print(view.file_name(), "just got cloned")