Save an undo checkpoint before bracketed paste in insert mode

helix-term/src/ui/editor.rs

@@ -1241,12 +1241,17 @@ impl Component for EditorView {
 
         match event {
             Event::Paste(contents) => {
+                let mode = cx.editor.mode();
+                if mode == Mode::Insert {
+                    let (view, doc) = current!(cx.editor);
+                    doc.append_changes_to_history(view);
+                }
+
                 cx.count = cx.editor.count;
                 commands::paste_bracketed_value(&mut cx, contents.clone());
                 cx.editor.count = None;
 
                 let config = cx.editor.config();
-                let mode = cx.editor.mode();
                 let (view, doc) = current!(cx.editor);
                 view.ensure_cursor_in_view(doc, config.scrolloff);