old_contents: import os
  import sys
  import pipes
  import shutil
  import subprocess
  
  """
  This plugin uses glue to sprite images:
  http://glue.readthedocs.org/en/latest/quickstart.html
  
  Install:
  
  (Only if you want to sprite jpg too)
  brew install libjpeg
  
  (Only if you want to optimize pngs with optipng)
  brew install optipng
  
  sudo easy_install pip
  sudo pip uninstall pil
  sudo pip install pil
  sudo pip install glue
  """
  
  try:
  	import glue
  except Exception, e:
  	sys.exit('Could not use glue: %s\nMaybe install: sudo easy_install glue' % e)
  
  
  IMG_PATH = 'static/img/sprites'
  CSS_PATH = 'static/css/sprites'
  
  KEY = '_PREV_CHECKSUM'
  
  def checksum(path):
  	command = 'md5 `find %s -type f`' % pipes.quote(IMG_PATH)
  	return subprocess.check_output(command, shell=True)
  
  def preBuild(site):
  	
  	currChecksum = checksum(IMG_PATH)
  	prevChecksum = getattr(site, KEY, None)
  	
  	# Don't run if none of the images has changed
  	if currChecksum == prevChecksum:
  		return
  	
  	if os.path.isdir(CSS_PATH):
  		shutil.rmtree(CSS_PATH)
  	
  	os.mkdir(CSS_PATH)
  	os.system('glue --cachebuster --crop --optipng "%s" "%s" --project' % (IMG_PATH, CSS_PATH))
  	
  	setattr(site, KEY, currChecksum)
new_contents: import os
  import sys
  import pipes
  import shutil
  import subprocess
  
  """
  This plugin uses glue to sprite images:
  http://glue.readthedocs.org/en/latest/quickstart.html
  
  Install:
  
  (Only if you want to sprite jpg too)
  brew install libjpeg
  
  sudo easy_install pip
  sudo pip uninstall pil
  sudo pip install pil
  sudo pip install glue
  """
  
  try:
  	import glue
  except Exception, e:
  	sys.exit('Could not use glue: %s\nMaybe install: sudo easy_install glue' % e)
  
  
  IMG_PATH = 'static/img/sprites'
  CSS_PATH = 'static/css/sprites'
  
  KEY = '_PREV_CHECKSUM'
  
  def checksum(path):
  	command = 'md5 `find %s -type f`' % pipes.quote(IMG_PATH)
  	return subprocess.check_output(command, shell=True)
  
  def preBuild(site):
  	
  	currChecksum = checksum(IMG_PATH)
  	prevChecksum = getattr(site, KEY, None)
  	
  	# Don't run if none of the images has changed
  	if currChecksum == prevChecksum:
  		return
  	
  	if os.path.isdir(CSS_PATH):
  		shutil.rmtree(CSS_PATH)
  	
  	os.mkdir(CSS_PATH)
  	os.system('glue --cachebuster --crop "%s" "%s" --project' % (IMG_PATH, CSS_PATH))
  	
  	setattr(site, KEY, currChecksum)
subject: Remove deprecated --optipng from glue options