replace&search

This method is called when the user clicks on the ``Replace & Search'' button in the frame.

• (send a-mred:searchable-frame replace&search) -> void

  This does a replace, using the contents of the replace edit to replace the contents of the search edit, but the replacement happens in the edit that get-edit-to-search returns. It then searches for the next occurrance of the search edit's contents in the edit that get-edit-to-search returns.