message: Add history entry before completing emoji
diff: @@ -478,6 +478,8 @@ export default class BasicMessageEditor extends React.Component<IProps, IState>
  switch (autocompleteAction) {
  case AutocompleteAction.ForceComplete:
  case AutocompleteAction.Complete:
  + this.historyManager.ensureLastChangesPushed(this.props.model);
  + this.modifiedFlag = true;
  autoComplete.confirmCompletion();
  handled = true;
  break;
  