docutils is migrationg to argparse.

pospell.py

@@ -138,30 +138,12 @@ def strip_rst(line):
     if line.endswith("::"):
         # Drop :: at the end, it would cause Literal block expected
         line = line[:-2]
+    settings = docutils.frontend.get_default_settings()
+    settings.pep_references = None
+    settings.rfc_references = None
+    settings.pep_base_url = "http://www.python.org/dev/peps/"
+    settings.pep_file_url_template = "pep-%04d"
     parser = docutils.parsers.rst.Parser()
-    settings = docutils.frontend.Values(
-        {
-            "report_level": 2,
-            "halt_level": 4,
-            "exit_status_level": 5,
-            "debug": None,
-            "warning_stream": None,
-            "error_encoding": "utf-8",
-            "error_encoding_error_handler": "backslashreplace",
-            "language_code": "en",
-            "id_prefix": "",
-            "auto_id_prefix": "id",
-            "pep_references": None,
-            "pep_base_url": "http://www.python.org/dev/peps/",
-            "pep_file_url_template": "pep-%04d",
-            "rfc_references": None,
-            "rfc_base_url": "http://tools.ietf.org/html/",
-            "tab_width": 8,
-            "trim_footnote_reference_space": None,
-            "syntax_highlight": "long",
-            "line_length_limit": 10000,
-        }
-    )
     stderr_stringio = io.StringIO()
     with redirect_stderr(stderr_stringio):
         document = new_document("<rst-doc>", settings=settings)

pyproject.toml

@@ -27,7 +27,7 @@ classifiers = [
 requires-python = ">= 3.6"
 dependencies = [
     "polib",
-    "docutils>=0.16",
+    "docutils>=0.18",
     "regex",
 ]
 dynamic = [
@@ -55,3 +55,5 @@ include-package-data = false
 
 [tool.setuptools.dynamic.version]
 attr = "pospell.__version__"
+
+[tool.black]