old_contents: from __future__ import print_function
  import os, subprocess
  
  from webassets.filter import Filter
  from webassets.exceptions import FilterError, ImminentDeprecationWarning
  
  
  __all__ = ('CoffeeScript',)
  
  
  class CoffeeScript(Filter):
      """Converts `CoffeeScript <http://jashkenas.github.com/coffee-script/>`_
      to real JavaScript.
  
      If you want to combine it with other JavaScript filters, make sure this
      one runs first.
  
      Supported configuration options:
  
      COFFEE_NO_BARE
          Set to ``True`` to compile without the top-level function
          wrapper (corresponds to the --bare option to ``coffee``).
      """
  
      name = 'coffeescript'
      max_debug_level = None
      options = {
          'coffee_deprecated': (False, 'COFFEE_PATH'),
          'coffee_bin': ('binary', 'COFFEE_BIN'),
          'no_bare': 'COFFEE_NO_BARE',
      }
  
      def output(self, _in, out, **kw):
          binary = self.coffee_bin or self.coffee_deprecated or 'coffee'
          if self.coffee_deprecated:
              import warnings
              warnings.warn(
                  'The COFFEE_PATH option of the "coffeescript" '
                  +'filter has been deprecated and will be removed.'
                  +'Use COFFEE_BIN instead.', ImminentDeprecationWarning)
  
          args = "-sp" + ("" if self.no_bare else 'b')
          proc = subprocess.Popen([binary, args],
              stdin=subprocess.PIPE,
              stdout=subprocess.PIPE,
              stderr=subprocess.PIPE)
          stdout, stderr = proc.communicate(_in.read().encode('utf-8'))
          if proc.returncode != 0:
              raise FilterError(('coffeescript: subprocess had error: stderr=%s, '+
                                 'stdout=%s, returncode=%s') % (
                  stderr, stdout, proc.returncode))
          elif stderr:
              print("coffeescript filter has warnings:", stderr)
          out.write(stdout.decode('utf-8'))
      
  
new_contents: from __future__ import print_function
  import os, subprocess
  
  from webassets.filter import Filter
  from webassets.exceptions import FilterError, ImminentDeprecationWarning
  
  
  __all__ = ('CoffeeScript',)
  
  
  class CoffeeScript(Filter):
      """Converts `CoffeeScript <http://jashkenas.github.com/coffee-script/>`_
      to real JavaScript.
  
      If you want to combine it with other JavaScript filters, make sure this
      one runs first.
  
      Supported configuration options:
  
      COFFEE_NO_BARE
          Set to ``True`` to compile with the top-level function
          wrapper (suppresses the --bare option to ``coffee``, which
          is used by default).
      """
  
      name = 'coffeescript'
      max_debug_level = None
      options = {
          'coffee_deprecated': (False, 'COFFEE_PATH'),
          'coffee_bin': ('binary', 'COFFEE_BIN'),
          'no_bare': 'COFFEE_NO_BARE',
      }
  
      def output(self, _in, out, **kw):
          binary = self.coffee_bin or self.coffee_deprecated or 'coffee'
          if self.coffee_deprecated:
              import warnings
              warnings.warn(
                  'The COFFEE_PATH option of the "coffeescript" '
                  +'filter has been deprecated and will be removed.'
                  +'Use COFFEE_BIN instead.', ImminentDeprecationWarning)
  
          args = "-sp" + ("" if self.no_bare else 'b')
          proc = subprocess.Popen([binary, args],
              stdin=subprocess.PIPE,
              stdout=subprocess.PIPE,
              stderr=subprocess.PIPE)
          stdout, stderr = proc.communicate(_in.read().encode('utf-8'))
          if proc.returncode != 0:
              raise FilterError(('coffeescript: subprocess had error: stderr=%s, '+
                                 'stdout=%s, returncode=%s') % (
                  stderr, stdout, proc.returncode))
          elif stderr:
              print("coffeescript filter has warnings:", stderr)
          out.write(stdout.decode('utf-8'))
      
  
subject: Fix coffee filter --bare documentation.