Fixed clash caused by the newly introduced -e shorthand for makemessages --exclude.

This fixes a regression caused by 0707b82. Refs #22328.

tests/i18n/test_extraction.py

@@ -5,12 +5,14 @@ import io
 import os
 import re
 import shutil
+import sys
 import time
 from unittest import SkipTest, skipUnless
 import warnings
 
 from django.conf import settings
 from django.core import management
+from django.core.management import execute_from_command_line
 from django.core.management.utils import find_command
 from django.test import SimpleTestCase
 from django.test import override_settings
@@ -565,6 +567,17 @@ class ExcludedLocaleExtractionTests(ExtractorTests):
         self._set_times_for_all_po_files()
         self.addCleanup(self._rmrf, os.path.join(self.test_dir, 'locale'))
 
+    def test_command_help(self):
+        old_stdout, old_stderr = sys.stdout, sys.stderr
+        sys.stdout, sys.stderr = StringIO(), StringIO()
+        try:
+            # `call_command` bypasses the parser; by calling
+            # `execute_from_command_line` with the help subcommand we
+            # ensure that there are no issues with the parser itself.
+            execute_from_command_line(['django-admin', 'help', 'makemessages'])
+        finally:
+            sys.stdout, sys.stderr = old_stdout, old_stderr
+
     def test_one_locale_excluded(self):
         management.call_command('makemessages', exclude=['it'], stdout=StringIO())
         self.assertRecentlyModified(self.PO_FILE % 'en')