aider: Refactored cmd_drop method to match glob pattern against the filename only, not the full file path.

# Context:
USER: I ran this command:

 pytest tests/test_commands.py

And got this output:

============================= test session starts ==============================
platform darwin -- Python 3.11.3, pytest-7.3.1, pluggy-1.2.0
rootdir: /Users/gauthier/Projects/aider
configfile: pytest.ini
collected 3 items

tests/test_commands.py ..F                                               [100%]

=================================== FAILURES ===================================
________________ TestCommands.test_cmd_drop_with_glob_patterns _________________

self = <tests.test_commands.TestCommands testMethod=test_cmd_drop_with_glob_patterns>

    def test_cmd_drop_with_glob_patterns(self):
        # Initialize the Commands and InputOutput objects
        io = InputOutput(pretty=False, yes=True)
        from aider.coders import Coder

        coder = Coder.create(models.GPT35, None, io, openai_api_key="deadbeef")
        commands = Commands(io, coder)

        with open("test1.py", "w") as f:
            f.write("print('test1')")
        with open("test2.py", "w") as f:
            f.write("print('test2')")

        # Add some files to the chat session
        commands.cmd_add("*.py")

        # Call the cmd_drop method with a glob pattern
        commands.cmd_drop("*2.py")

        # Check if the Python files have been removed from the chat session
>       self.assertIn(os.path.abspath("test1.py"), coder.abs_fnames)
E       AssertionError: '/private/var/folders/49/kxrdwwbx0h9bchx99397477c0000gn/T/tmpijmz7big/test1.py' not found in set()

tests/test_commands.py:81: AssertionError
----------------------------- Captured stdout call -----------------------------
Model: gpt-3.5-turbo
Git repo: none
Repo-map: disabled
Added test1.py to the chat
Added test2.py to the chat
Removed test2.py from the chat
Removed test1.py from the chat
=========================== short test summary info ============================
FAILED tests/test_commands.py::TestCommands::test_cmd_drop_with_glob_patterns
========================= 1 failed, 2 passed in 0.98s ==========================

ASSISTANT: It seems like the test `test_cmd_drop_with_glob_patterns` is failing because the `cmd_drop` method is removing all files that match the glob pattern "*2.py", which includes "test1.py" and "test2.py". This is because the glob pattern is being matched against the full file path, not just the filename.

To fix this, we need to modify the `cmd_drop` method in the `Commands` class in the `aider/commands.py` file. Specifically, we need to change the way we match the glob pattern against the file paths.

Here are the changes:

```python
aider/commands.py
<<<<<<< ORIGINAL
    def cmd_drop(self, args):
        "Remove matching files from the chat session"

        if not args.strip():
            self.io.tool_output("Dropping all files from the chat session.")
            self.coder.abs_fnames = set()

        for word in args.split():
            matched_files = [
                file
                for file in self.coder.abs_fnames
                if any(glob.fnmatch.fnmatch(os.path.relpath(file, self.coder.root), word) for file in self.coder.abs_fnames)
            ]
            if not matched_files:
                self.io.tool_error(f"No files matched '{word}'")

            for matched_file in matched_files:
                relative_fname = os.path.relpath(matched_file, self.coder.root)
                self.coder.abs_fnames.remove(matched_file)
                self.io.tool_output(f"Removed {relative_fname} from the chat")
=======
    def cmd_drop(self, args):
        "Remove matching files from the chat session"

        if not args.strip():
            self.io.tool_output("Dropping all files from the chat session.")
            self.coder.abs_fnames = set()

        for word in args.split():
            matched_files = [
                file
                for file in self.coder.abs_fnames
                if glob.fnmatch.fnmatch(os.path.basename(file), word)
            ]
            if not matched_files:
                self.io.tool_error(f"No files matched '{word}'")

            for matched_file in matched_files:
                relative_fname = os.path.relpath(matched_file, self.coder.root)
                self.coder.abs_fnames.remove(matched_file)
                self.io.tool_output(f"Removed {relative_fname} from the chat")
>>>>>>> UPDATED
```

This change will ensure that the glob pattern is matched against the filename only, not the full file path. This should fix the failing test.

aider/commands.py

@@ -288,7 +288,7 @@ class Commands:
             matched_files = [
                 file
                 for file in self.coder.abs_fnames
-                if any(glob.fnmatch.fnmatch(os.path.relpath(file, self.coder.root), word) for file in self.coder.abs_fnames)
+                if glob.fnmatch.fnmatch(os.path.basename(file), word)
             ]
             if not matched_files:
                 self.io.tool_error(f"No files matched '{word}'")