Universalis

hello
would you add the search engine from Universalis in the quick search addon list?

Has someone submitted an add-on for that engine? You can learn how to create OpenSearch add-ons here (it’s fairly easy).

so easy, hmmmm…
i don’t understand at all the section "application/…
where can i find the url for the engine in http://www.universalis.fr/ ?
and, sorry, the sections following “Autodiscovery of search plugins” are just ununderstandable, except for english informaticians. I’m neither english nor informatician

Is it explained how to add (and not replace) “search with universalis” in the right click menu?

You have to go universalis.fr and inspect their search form. That form sholuld have a action attribute, you will want to use that same URL.

It’s easy in that you just copy paste the code from that MDN article, and change up some key terms, like URL, name, etc.