Search engines that can be used via the address bar. Maps a search engine name (such as DEFAULT, or ddg) to a URL with a {} placeholder. The placeholder will be replaced by the search term, use {{ and }} for literal {/} signs. The search engine named DEFAULT is used when url.auto_search is turned on and something else than a URL was entered to be opened. Other search engines can be used by prepending the search engine name to the search term, for example :open google qutebrowser.
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