fix: handle windows paths in compression keys

litellm/compression/message_stubbing.py

@@ -34,7 +34,7 @@ def extract_key(message: dict, fallback_index: int, used_keys: Set[str]) -> str:
         if match:
             # Use just the filename, not full path
             path = match.group(1)
-            key = path.split("/")[-1]
+            key = re.split(r"[\\/]", path)[-1]
             break
 
     if key is None:

tests/test_litellm/test_compression.py

@@ -98,6 +98,13 @@ def test_extract_key_with_filename():
     assert key == "auth.py"
 
 
+def test_extract_key_with_windows_file_path():
+    msg = {"role": "user", "content": r"File: C:\repo\auth.py"}
+    used: set = set()
+    key = extract_key(msg, fallback_index=0, used_keys=used)
+    assert key == "auth.py"
+
+
 def test_extract_key_fallback():
     msg = {"role": "user", "content": "Some random content without a filename"}
     used: set = set()