Unnamed

define_webjump (
    "magick-options",
    "http://imagemagick.org/script/command-line-options.php#%s",
    $completer = function (input, cursor_position, conservative) {
        yield co_return (
            prefix_completer (
                $completions = ["foo", "bar", "baz"],
                $get_string = identity));
    });