message: Add XXX for
diff: @@ -598,6 +598,8 @@ export default class MessageComposerInput extends React.Component {
  onTab = async (e) => {
  e.preventDefault(); // we *never* want tab's default to happen, but we do want up/down sometimes
  if (this.autocomplete.state.completionList.length === 0) {
  + // XXX THIS IS EVIL. We should not be emulating other keys when pressing other keys
  + // This causes issues such as https://github.com/vector-im/riot-web/issues/4445
  await this.autocomplete.forceComplete();
  this.onDownArrow(e);
  } else {
  