プラグインlookupDictionary導入

http://coderepos.org/share/browser/lang/javascript/vimperator-plugins/branches/1.2
↑からlookupDictionary.jsをダウンロードして~/vimperator/plugin/に保存


.vimperatorrcに以下を追記

" lookupDictionary.js
let g:lookupDictionary_beginningWith='1'
javascript <<EOM
[
    ['<A-g>','goo'],
    ['<A-a>','eijiro'],
].forEach(function([key,command]){
    liberator.mappings.addUserMap([liberator.modes.NORMAL], [key],
        "User defined search mapping",
        function () { liberator.commandline.open(':',command+' ',liberator.modes.EX); },
        {
            rhs: key,
            noremap: true
        });
});
EOM

Alt+gでgoo検索できる
Alt+aで英字郎検索できる

参考:http://wiki.livedoor.jp/shin_yan/d/FrontPage