Prefer country over language family + MATCH_ALL (#91753)

* Prefer country over language family

* More test fixes

homeassistant/util/language.py

@@ -6,6 +6,8 @@ from dataclasses import dataclass
 import operator
 import re
 
+from homeassistant.const import MATCH_ALL
+
 SEPARATOR_RE = re.compile(r"[-_]")
 
 
@@ -95,7 +97,7 @@ class Dialect:
         other_regions = pref_regions if dialect.region is None else {dialect.region}
 
         # Better match if there is overlap in regions
-        return 1 if regions.intersection(other_regions) else 0
+        return 2 if regions.intersection(other_regions) else 0
 
     @staticmethod
     def parse(tag: str) -> Dialect:
@@ -125,6 +127,9 @@ def matches(
     target: str, supported: Iterable[str], country: str | None = None
 ) -> list[str]:
     """Return a sorted list of matching language tags based on a target tag and country hint."""
+    if target == MATCH_ALL:
+        return list(supported)
+
     target_dialect = Dialect.parse(target)
 
     # Higher score is better

tests/components/conversation/snapshots/test_init.ambr

@@ -172,8 +172,8 @@
         'id': 'homeassistant',
         'name': 'Home Assistant',
         'supported_languages': list([
-          'de',
           'de-CH',
+          'de',
         ]),
       }),
       dict({

tests/components/stt/test_init.py

@@ -443,5 +443,5 @@ async def test_ws_list_engines(
     assert msg["type"] == "result"
     assert msg["success"]
     assert msg["result"] == {
-        "providers": [{"engine_id": engine_id, "supported_languages": ["de", "de-CH"]}]
+        "providers": [{"engine_id": engine_id, "supported_languages": ["de-CH", "de"]}]
     }

tests/util/test_language.py

@@ -1,9 +1,19 @@
 """Test Home Assistant language util methods."""
 from __future__ import annotations
 
+from homeassistant.const import MATCH_ALL
 from homeassistant.util import language
 
 
+def test_match_all() -> None:
+    """Test MATCH_ALL."""
+    assert language.matches(MATCH_ALL, ["fr-Fr", "en-US", "en-GB"]) == [
+        "fr-Fr",
+        "en-US",
+        "en-GB",
+    ]
+
+
 def test_region_match() -> None:
     """Test that an exact language/region match is preferred."""
     assert language.matches("en-GB", ["fr-Fr", "en-US", "en-GB"]) == [
@@ -53,6 +63,26 @@ def test_country_preferred() -> None:
     ]
 
 
+def test_country_preferred_over_family() -> None:
+    """Test that country hint is preferred over language family."""
+    assert (
+        language.matches(
+            "de",
+            ["de", "de-CH", "de-DE"],
+            country="CH",
+        )[0]
+        == "de-CH"
+    )
+    assert (
+        language.matches(
+            "de",
+            ["de", "de-CH", "de-DE"],
+            country="DE",
+        )[0]
+        == "de-DE"
+    )
+
+
 def test_language_as_region() -> None:
     """Test that the language itself can be interpreted as a region."""
     assert language.matches(