def skip_signatures_and_duplicates_concat_well_known_metadata(cls, default_dup_action=None,
                                                                additional_rules=None):
    """Produces a rule set useful in many deploy jar creation contexts.

    The rule set skips duplicate entries by default, retaining the 1st encountered.  In addition it
    has the following special handling:

    - jar signature metadata is dropped
    - jar indexing files INDEX.LIST are dropped
    - ``java.util.ServiceLoader`` provider-configuration files are concatenated in the order
      encountered

    :param default_dup_action: An optional default action to take for duplicates.  Defaults to
      `Duplicate.SKIP` if not specified.
    :param additional_rules: Optionally one or more jar rules to add to those described above.
    :returns: JarRules
    """
    default_dup_action = Duplicate.validate_action(default_dup_action or Duplicate.SKIP)
    additional_rules = assert_list(additional_rules,
                                   expected_type=(Duplicate, Skip))

    rules = [Skip(r'^META-INF/[^/]+\.SF$'),  # signature file
             Skip(r'^META-INF/[^/]+\.DSA$'),  # default signature alg. file
             Skip(r'^META-INF/[^/]+\.RSA$'),  # default signature alg. file
             Skip(r'^META-INF/INDEX.LIST$'),  # interferes with Class-Path: see man jar for i option
             Duplicate(r'^META-INF/services/', Duplicate.CONCAT_TEXT)]  # 1 svc fqcn per line

    return JarRules(rules=rules + additional_rules, default_dup_action=default_dup_action)
Produces a rule set useful in many deploy jar creation contexts.

    The rule set skips duplicate entries by default, retaining the 1st encountered.  In addition it
    has the following special handling:

    - jar signature metadata is dropped
    - jar indexing files INDEX.LIST are dropped
    - ``java.util.ServiceLoader`` provider-configuration files are concatenated in the order
      encountered

    :param default_dup_action: An optional default action to take for duplicates.  Defaults to
      `Duplicate.SKIP` if not specified.
    :param additional_rules: Optionally one or more jar rules to add to those described above.
    :returns: JarRules