| <!DOCTYPE html> | |
| <link rel=author href="mailto:jarhar@chromium.org"> | |
| <link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1266891"> | |
| <details id=details open="true">hello world</details> | |
| <script> | |
| document.execCommand("selectAll"); | |
| details.open = false; | |
| document.execCommand(false); | |
| document.body.attachShadow({mode: 'open'}); | |
| </script> |