old_contents: from coalib.bearlib.abstractions.Linter import linter
  from coalib.bears.requirements.PipRequirement import PipRequirement
  import yaml
  
  
  @linter(executable='yamllint',
          output_format="regex",
          output_regex=r'.+:(?P<line>\d+):(?P<column>\d+): '
                       r'\[(?P<severity>error|warning)\] (?P<message>.+)')
  class YAMLLintBear:
      """
      Check yaml code for errors and possible problems.
  
      You can read more about capabilities at
      <http://yamllint.readthedocs.org/en/latest/rules.html>.
      """
  
      LANGUAGES = {"YAML"}
      REQUIREMENTS = {PipRequirement('yamllint', '1.*')}
      AUTHORS = {'The coala developers'}
      AUTHORS_EMAILS = {'coala-devel@googlegroups.com'}
      LICENSE = 'AGPL-3.0'
      CAN_DETECT = {'Syntax', 'Formatting'}
  
      @staticmethod
      def generate_config(filename, file,
                          document_start: bool=False):
          """
          :param document_start:
              Use this rule to require or forbid the use of document start
              marker (---).
          """
          yamllint_configs = {
              'extends': 'default',
              'rules': {
                  'document-start': {
                      'present': False
                   }
              }
          }
          if document_start:
              yamllint_configs['rules']['document-start']['present'] = True
  
          return yaml.dump(yamllint_configs)
  
      @staticmethod
      def create_arguments(filename, file, config_file, yamllint_config: str=''):
          """
          :param yamllint_config: Path to a custom configuration file.
          """
          args = ('-f', 'parsable', filename)
          if yamllint_config:
              args += ('--config=' + yamllint_config,)
          else:
              args += ('--config-file=' + config_file,)
          return args
  
new_contents: from coalib.bearlib.abstractions.Linter import linter
  from coalib.bears.requirements.PipRequirement import PipRequirement
  import yaml
  
  
  @linter(executable='yamllint',
          output_format="regex",
          output_regex=r'.+:(?P<line>\d+):(?P<column>\d+): '
                       r'\[(?P<severity>error|warning)\] (?P<message>.+)')
  class YAMLLintBear:
      """
      Check yaml code for errors and possible problems.
  
      You can read more about capabilities at
      <http://yamllint.readthedocs.org/en/latest/rules.html>.
      """
  
      LANGUAGES = {"YAML"}
      REQUIREMENTS = {PipRequirement('yamllint', '1.*')}
      AUTHORS = {'The coala developers'}
      AUTHORS_EMAILS = {'coala-devel@googlegroups.com'}
      LICENSE = 'AGPL-3.0'
      CAN_DETECT = {'Syntax', 'Formatting'}
  
      @staticmethod
      def generate_config(filename, file,
                          document_start: bool=False):
          """
          :param document_start:
              Use this rule to require or forbid the use of document start
              marker (---).
          """
          yamllint_configs = {
              'extends': 'default',
              'rules': {
                  'document-start': {
                      'present': False
                   }
              }
          }
          if document_start:
              yamllint_configs['rules']['document-start']['present'] = True
  
          return yaml.dump(yamllint_configs)
  
      @staticmethod
      def create_arguments(filename, file, config_file, yamllint_config: str=''):
          """
          :param yamllint_config: Path to a custom configuration file.
          """
          args = ('-f', 'parsable', filename)
          if yamllint_config:
              args += ('--config-file=' + yamllint_config,)
          else:
              args += ('--config-file=' + config_file,)
          return args
  
subject: Correct argument "--config"