Fix :w in insert mode

Author: xDarksome

helix-view/src/document.rs

@@ -468,6 +468,8 @@ impl Document {
 
         let language_server = self.language_server.clone();
 
+        // ensure changes are commited
+        self.commit_pending_changes(None);
         // mark changes up to now as saved
         self.reset_modified();
 
@@ -831,6 +833,10 @@ impl Document {
 
     /// Commit pending changes to history
     pub fn append_changes_to_history(&mut self, view_id: ViewId) {
+        self.commit_pending_changes(Some(view_id))
+    }
+
+    fn commit_pending_changes(&mut self, view_id: Option<ViewId>) {
         if self.changes.is_empty() {
             return;
         }
@@ -839,8 +845,10 @@ impl Document {
         let changes = std::mem::replace(&mut self.changes, new_changeset);
         // Instead of doing this messy merge we could always commit, and based on transaction
         // annotations either add a new layer or compose into the previous one.
-        let transaction =
-            Transaction::from(changes).with_selection(self.selection(view_id).clone());
+        let mut transaction = Transaction::from(changes);
+        if let Some(view_id) = view_id {
+            transaction = transaction.with_selection(self.selection(view_id).clone());
+        }
 
         // HAXX: we need to reconstruct the state as it was before the changes..
         let old_state = self.old_state.take().expect("no old_state available");