Major fixes and new features

venv/lib/python3.12/site-packages/flake8/options/aggregator.py

@@ -0,0 +1,56 @@
+"""Aggregation function for CLI specified options and config file options.
+
+This holds the logic that uses the collected and merged config files and
+applies the user-specified command-line configuration on top of it.
+"""
+from __future__ import annotations
+
+import argparse
+import configparser
+import logging
+from typing import Sequence
+
+from flake8.options import config
+from flake8.options.manager import OptionManager
+
+LOG = logging.getLogger(__name__)
+
+
+def aggregate_options(
+    manager: OptionManager,
+    cfg: configparser.RawConfigParser,
+    cfg_dir: str,
+    argv: Sequence[str] | None,
+) -> argparse.Namespace:
+    """Aggregate and merge CLI and config file options."""
+    # Get defaults from the option parser
+    default_values = manager.parse_args([])
+
+    # Get the parsed config
+    parsed_config = config.parse_config(manager, cfg, cfg_dir)
+
+    # store the plugin-set extended default ignore / select
+    default_values.extended_default_ignore = manager.extended_default_ignore
+    default_values.extended_default_select = manager.extended_default_select
+
+    # Merge values parsed from config onto the default values returned
+    for config_name, value in parsed_config.items():
+        dest_name = config_name
+        # If the config name is somehow different from the destination name,
+        # fetch the destination name from our Option
+        if not hasattr(default_values, config_name):
+            dest_val = manager.config_options_dict[config_name].dest
+            assert isinstance(dest_val, str)
+            dest_name = dest_val
+
+        LOG.debug(
+            'Overriding default value of (%s) for "%s" with (%s)',
+            getattr(default_values, dest_name, None),
+            dest_name,
+            value,
+        )
+        # Override the default values with the config values
+        setattr(default_values, dest_name, value)
+
+    # Finally parse the command-line options
+    return manager.parse_args(argv, default_values)