old_contents: # # # # # # # # # # # # # #
  # CAPTAINHOOK IDENTIFIER  #
  # # # # # # # # # # # # # #
  from .utils import bash, filter_python_files
  
  DEFAULT = 'off'
  CHECK_NAME = 'isort'
  NO_ISORT_MSG = ("isort is required for the flake8 plugin.\n"
                  "`pip install isort` or turn it off in your tox.ini file.")
  REQUIRED_FILES = ['.editorconfig', '.isort.cfg', 'setup.cfg']
  
  
  def run(files, temp_folder):
      "Check flake8 errors in the code base."
      try:
          import isort  # NOQA
      except ImportError:
          return NO_ISORT_MSG
  
      py_files = filter_python_files(files)
  
      return bash('isort -df {0}'.format(' '.join(py_files))).value()
  
new_contents: # # # # # # # # # # # # # #
  # CAPTAINHOOK IDENTIFIER  #
  # # # # # # # # # # # # # #
  from .utils import bash, filter_python_files
  
  DEFAULT = 'off'
  CHECK_NAME = 'isort'
  NO_ISORT_MSG = ("isort is required for the isort plugin.\n"
                  "`pip install isort` or turn it off in your tox.ini file.")
  REQUIRED_FILES = ['.editorconfig', '.isort.cfg', 'setup.cfg']
  
  
  def run(files, temp_folder):
      "Check isort errors in the code base."
      try:
          import isort  # NOQA
      except ImportError:
          return NO_ISORT_MSG
  
      py_files = filter_python_files(files)
  
      return bash('isort -df {0}'.format(' '.join(py_files))).value()
  
subject: Fix #81: typos in isort_checker errmsg and docstr.