new_contents: import xml.etree.cElementTree as ET
  import sys
  
  filename = sys.argv[1]
  tree = ET.parse(filename)
  
  # get all the window info objects and set the auto_hide attr to true
  window_infos = tree.getroot().findall('component[@name="ToolWindowManager"]/layout/window_info')
  for info in window_infos:
    info.set("auto_hide", 'true')
  
  tree.write(filename)
  
subject: add a script to modify IntelliJ Idea window defaults