Currently, the user has to select which search engine to use for their query. This might turn out to be an unused feature, but add an 'All' option that will allow the user to send the query to all the listed search engines. This will, of course, open multiple tabs when it's issued.
The logic for this has been set up when it comes to actually opening the tabs I haven't found a way to programmatically open all the tabs at once. It just seems to open the first one and that's it.
Currently, the user has to select which search engine to use for their query. This might turn out to be an unused feature, but add an 'All' option that will allow the user to send the query to all the listed search engines. This will, of course, open multiple tabs when it's issued.