old_contents: from mojo.events import addObserver
  import vanilla
  
  class EqualizeSidebearings(object):
      def __init__(self):
          addObserver(self, 'center', 'spaceCenterKeyUp')
  
      def center(self, info):
          # print info
          # self.w = vanilla.Window((400, 400, 1000, 900))
          # self.w.text = vanilla.TextBox((10, 10, -10, 900), str(dir(info['spaceCenter'])))
          # self.w.b = vanilla.EditText((0, 0, -0, -0), info['event'].characters())
          # self.w.text = vanilla.TextBox((10, 10, -10, 900), info['event'].characters)
          # self.w.open()
          
          if info['event'].characters() == 'a':
              info['glyph'].center()
  
  EqualizeSidebearings()
new_contents: from mojo.events import addObserver
  import vanilla
  
  class EqualizeSidebearings(object):
      def __init__(self):
          addObserver(self, 'center', 'spaceCenterKeyUp')
  
      def center(self, info):
          if info['event'].characters() == 'a':
              info['glyph'].center()
  
  EqualizeSidebearings()
subject: Remove commented inspection code