Fix inconsistent argument exit code when argparse exit with its own error code (#7931)

Returning 2 here is confusing as it doesn't match the documentation: https://pylint.pycqa.org/en/latest/user_guide/usage/run.html#exit-codes

* pylint: use exit code 32 when invalid arguments are passed

* pylint: add failing test when ambiguous abbreviated parameters are set in a config file

This is confusing behaviour. The output is:

```
usage: pylint [options]
pylint: error: ambiguous option: --no could match --notes, --notes-rgx, --no-docstring-rgx
```

The exit code is 2 which doesn't match the documentation: https://pylint.pycqa.org/en/latest/user_guide/usage/run.html#exit-codes

* pylint: use exit code 32 when ambiguous abbreviated parameters are set in a config file

Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com>

2 files changed, 10 insertions, 4 deletions

diff --git a/pylint/config/arguments_manager.py b/pylint/config/arguments_manager.py
index c771ad355..2151aefde 100644
--- a/pylint/config/arguments_manager.py
+++ b/pylint/config/arguments_manager.py
@@ -256,9 +256,12 @@ class _ArgumentsManager:
 
     def _parse_configuration_file(self, arguments: list[str]) -> None:
         """Parse the arguments found in a configuration file into the namespace."""
-        self.config, parsed_args = self._arg_parser.parse_known_args(
-            arguments, self.config
-        )
+        try:
+            self.config, parsed_args = self._arg_parser.parse_known_args(
+                arguments, self.config
+            )
+        except SystemExit:
+            sys.exit(32)
         unrecognized_options: list[str] = []
         for opt in parsed_args:
             if opt.startswith("--"):
diff --git a/pylint/config/config_initialization.py b/pylint/config/config_initialization.py
index b903a5802..d26f0e8c5 100644
--- a/pylint/config/config_initialization.py
+++ b/pylint/config/config_initialization.py
@@ -87,7 +87,10 @@ def _config_initialization(
             unrecognized_options.append(opt[1:])
     if unrecognized_options:
         msg = ", ".join(unrecognized_options)
-        linter._arg_parser.error(f"Unrecognized option found: {msg}")
+        try:
+            linter._arg_parser.error(f"Unrecognized option found: {msg}")
+        except SystemExit:
+            sys.exit(32)
 
     # Now that config file and command line options have been loaded
     # with all disables, it is safe to emit messages