project: Clear worktree settings when worktrees get removed (#44913)

Release Notes:

- N/A *or* Added/Fixed/Improved ...

crates/project/src/project_settings.rs

@@ -792,13 +792,20 @@ impl SettingsObserver {
         event: &WorktreeStoreEvent,
         cx: &mut Context<Self>,
     ) {
-        if let WorktreeStoreEvent::WorktreeAdded(worktree) = event {
-            cx.subscribe(worktree, |this, worktree, event, cx| {
-                if let worktree::Event::UpdatedEntries(changes) = event {
-                    this.update_local_worktree_settings(&worktree, changes, cx)
-                }
-            })
-            .detach()
+        match event {
+            WorktreeStoreEvent::WorktreeAdded(worktree) => cx
+                .subscribe(worktree, |this, worktree, event, cx| {
+                    if let worktree::Event::UpdatedEntries(changes) = event {
+                        this.update_local_worktree_settings(&worktree, changes, cx)
+                    }
+                })
+                .detach(),
+            WorktreeStoreEvent::WorktreeRemoved(_, worktree_id) => {
+                cx.update_global::<SettingsStore, _>(|store, cx| {
+                    store.clear_local_settings(*worktree_id, cx).log_err();
+                });
+            }
+            _ => {}
         }
     }
 

crates/settings/src/settings_store.rs

@@ -247,6 +247,7 @@ pub trait AnySettingValue: 'static + Send + Sync {
     fn all_local_values(&self) -> Vec<(WorktreeId, Arc<RelPath>, &dyn Any)>;
     fn set_global_value(&mut self, value: Box<dyn Any>);
     fn set_local_value(&mut self, root_id: WorktreeId, path: Arc<RelPath>, value: Box<dyn Any>);
+    fn clear_local_values(&mut self, root_id: WorktreeId);
 }
 
 /// Parameters that are used when generating some JSON schemas at runtime.
@@ -971,6 +972,11 @@ impl SettingsStore {
     pub fn clear_local_settings(&mut self, root_id: WorktreeId, cx: &mut App) -> Result<()> {
         self.local_settings
             .retain(|(worktree_id, _), _| worktree_id != &root_id);
+        self.raw_editorconfig_settings
+            .retain(|(worktree_id, _), _| worktree_id != &root_id);
+        for setting_value in self.setting_values.values_mut() {
+            setting_value.clear_local_values(root_id);
+        }
         self.recompute_values(Some((root_id, RelPath::empty())), cx);
         Ok(())
     }
@@ -1338,6 +1344,11 @@ impl<T: Settings> AnySettingValue for SettingValue<T> {
             Err(ix) => self.local_values.insert(ix, (root_id, path, value)),
         }
     }
+
+    fn clear_local_values(&mut self, root_id: WorktreeId) {
+        self.local_values
+            .retain(|(worktree_id, _, _)| *worktree_id != root_id);
+    }
 }
 
 #[cfg(test)]