Clear hashed cache when clearing meta.

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix pretty repr for `collections.deque` https://github.com/Textualize/rich/pull/2864
 - Thread used in progress.track will exit if an exception occurs in a generator https://github.com/Textualize/rich/pull/3402
 - Progress track thread is now a daemon thread https://github.com/Textualize/rich/pull/3402
+- Fixed cached hash preservation upon clearing meta and links https://github.com/Textualize/rich/issues/2942
 
 ### Changed
 

rich/style.py

@@ -663,7 +663,7 @@ def clear_meta_and_links(self) -> "Style":
         style._set_attributes = self._set_attributes
         style._link = None
         style._link_id = ""
-        style._hash = self._hash
+        style._hash = None
         style._null = False
         style._meta = None
         return style

tests/test_style.py

@@ -251,3 +251,17 @@ def test_clear_meta_and_links():
     assert clear_style.bgcolor == Color.parse("black")
     assert clear_style.bold
     assert not clear_style.italic
+
+
+def test_clear_meta_and_links_clears_hash():
+    """Regression test for https://github.com/Textualize/rich/issues/2942."""
+
+    style = Style.parse("bold red on black link https://example.org") + Style.on(
+        click="CLICK"
+    )
+    hash(style)  # Force hash caching.
+
+    assert style._hash is not None
+
+    clear_style = style.clear_meta_and_links()
+    assert clear_style._hash is None