Web search

Type the name of an engine, then what to search for, and press Enter. The search opens in a new tab (Shift+Enter uses the current one).

google rust lifetimes opens Google with that search. search rust lifetimes lists every engine, so you can choose.

The engines

The search text must come after the word: google alone does nothing, and the word must be the first thing you type.
Home Screen only builds the address. The search engine sees what you search for when the new tab opens, as with any search. Nothing is sent before you press Enter.
The text is encoded safely, so c++ & rust and characters such as # and & reach the engine as typed.
Opened searches are saved in Recent, so you can repeat them.

The tool is also a widget, Web search: type what to look for and click an engine. The list of engines is built in; custom engines may come later.