diff --git a/aider/coders/editblock_fenced_coder.py b/aider/coders/editblock_fenced_coder.py
index 80e5036ea..cd09e27c5 100644
--- a/aider/coders/editblock_fenced_coder.py
+++ b/aider/coders/editblock_fenced_coder.py
@@ -5,5 +5,6 @@ from .editblock_fenced_prompts import EditBlockFencedPrompts
 
 class EditBlockFencedCoder(EditBlockCoder):
     """A coder that uses fenced search/replace blocks for code modifications."""
+
     edit_format = "diff-fenced"
     gpt_prompts = EditBlockFencedPrompts()
diff --git a/aider/coders/help_coder.py b/aider/coders/help_coder.py
index fcb1e6aa1..311805af7 100644
--- a/aider/coders/help_coder.py
+++ b/aider/coders/help_coder.py
@@ -5,6 +5,7 @@ from .help_prompts import HelpPrompts
 
 class HelpCoder(Coder):
     """Interactive help and documentation about aider."""
+
     edit_format = "help"
     gpt_prompts = HelpPrompts()
 
diff --git a/aider/linter.py b/aider/linter.py
index 51ed40b70..9c980366d 100644
--- a/aider/linter.py
+++ b/aider/linter.py
@@ -1,10 +1,11 @@
 import os
+import oslex
 import re
+import shlex
 import subprocess
 import sys
 import traceback
 import warnings
-import oslex
 from dataclasses import dataclass
 from pathlib import Path
 
diff --git a/tests/basic/test_watch.py b/tests/basic/test_watch.py
index 524f80e08..16e4f8206 100644
--- a/tests/basic/test_watch.py
+++ b/tests/basic/test_watch.py
@@ -155,7 +155,7 @@ def test_ai_comment_pattern():
     assert (
         question_js_has_bang == "?"
     ), "Expected at least one bang (!) comment in watch_question.js fixture"
-    
+
     # Test Lisp fixture
     lisp_path = fixtures_dir / "watch.lisp"
     lisp_lines, lisp_comments, lisp_has_bang = watcher.get_ai_comments(str(lisp_path))