github.js

CmdUtils.CreateCommand({
  names: ["github"],
  icon: "http://github.com/favicon.ico",
  description: "GitHub search",
  author: {name: "Yury Kotlyarov", email: "yura@brainhouse.ru"},
  license: "Ruby",
  homepage: "http://www.brainhouse.ru/",
  arguments: [{role: 'object', nountype: noun_arb_text, label: 'search query'}],

  _getSearchUrl: function(query) {
    return "http://github.com/search?" + jQuery.param( {q: query} );
  },

  preview: function preview(pblock, args) {
    pblock.innerHTML = _("GitHub search in progress...");
    
    CmdUtils.previewGet(pblock, this._getSearchUrl(args.object.text), function (htm) {
      pblock.innerHTML = htm;
    });
  },

  execute: function execute(args) {
    Utils.openUrlInBrowser(this._getSearchUrl(args.object.text));
  }
});

ubiquity_commands.html

<link rel="commands" href="github.js" name="Ubiquity GitHub Search Command" />