Improve backup exclude filters (#141311)

* Improve backup exclude filters

* Add comment

homeassistant/components/backup/const.py

@@ -16,8 +16,8 @@ DATA_MANAGER: HassKey[BackupManager] = HassKey(DOMAIN)
 LOGGER = getLogger(__package__)
 
 EXCLUDE_FROM_BACKUP = [
-    "__pycache__/*",
-    ".DS_Store",
+    "**/__pycache__/*",
+    "**/.DS_Store",
     ".HA_RESTORE",
     "*.db-shm",
     "*.log.*",

homeassistant/components/backup/manager.py

@@ -1726,7 +1726,9 @@ class CoreBackupReaderWriter(BackupReaderWriter):
             """Filter to filter excludes."""
 
             for exclude in excludes:
-                if not path.match(exclude):
+                # The home assistant core configuration directory is added as "data"
+                # in the tar file, so we need to prefix that path to the filters.
+                if not path.full_match(f"data/{exclude}"):
                     continue
                 LOGGER.debug("Ignoring %s because of %s", path, exclude)
                 return True

tests/components/backup/conftest.py

@@ -76,6 +76,7 @@ CONFIG_DIR = {
         Path("backups/not_backup"),
     ],
     "/another_subdir": [
+        Path("another_subdir/.DS_Store"),
         Path("another_subdir/backups"),
         Path("another_subdir/tts"),
     ],

tests/components/backup/test_manager.py

@@ -70,8 +70,10 @@ _EXPECTED_FILES = [
     ".storage",
     "another_subdir",
     "another_subdir/backups",
+    "another_subdir/backups/backup.tar",
     "another_subdir/backups/not_backup",
     "another_subdir/tts",
+    "another_subdir/tts/voice.mp3",
     "backups",
     "backups/not_backup",
     "tmp_backups",