old_contents: var request = require('request');
  
  module.exports = function (from, to, args) {
      var arg = args.join(' ').replace('w ', '');
      var search = 'https://zh.wikipedia.org/w/api.php?format=json&action=query&list=search&srlimit=1&srprop&continue&srsearch=' + encodeURI(arg);
      request(search, function(err, response, body) {
          if (!err && response.statusCode == 200) {
              var title = JSON.parse(body).query.search[0].title
              var options = {
                  url:'https://zh.wikipedia.org/w/api.php?format=json&utf8&action=query&prop=extracts&exintro&explaintext&exchars=130&redirects&titles=' + encodeURI(title),
                  headers: {
                      'Accept-Language': 'zh-TW,zh;q=0.8,en-US;q=0.5,en;q=0.3'
                  },
                  gzip: true
              };
              request(options, function(err, response, body) {
                  if (!err && response.statusCode == 200) {
                      var data = JSON.parse(body);
                      var firstResult = Object.keys(data.query.pages);
                      oktw.say(from, to, '[wiki] ' + data.query.pages[firstResult[0]].extract + '\nhttp://zh.wikipedia.org/wiki/' + title);
                  }
              })
           }
      });
  };
  
  module.exports.info = {name:'wiki', example:'.w google', command:'w'};
  
new_contents: var request = require('request');
  
  module.exports = function (from, to, args) {
      var arg = args.join(' ').replace('w ', '');
      var search = 'https://zh.wikipedia.org/w/api.php?format=json&action=query&list=search&srlimit=1&srprop&continue&srsearch=' + encodeURI(arg);
      request(search, function(err, response, body) {
          if (!err && response.statusCode == 200) {
              var title = JSON.parse(body).query.search[0].title
              var options = {
                  url:'https://zh.wikipedia.org/w/api.php?format=json&utf8&action=query&prop=extracts&exintro&explaintext&exchars=130&redirects&titles=' + encodeURI(title),
                  headers: {
                      'Accept-Language': 'zh-TW,zh;q=0.8,en-US;q=0.5,en;q=0.3'
                  },
                  gzip: true
              };
              request(options, function(err, response, body) {
                  if (!err && response.statusCode == 200) {
                      var data = JSON.parse(body);
                      var firstResult = Object.keys(data.query.pages);
                      oktw.say(from, to, '[wiki] ' + data.query.pages[firstResult[0]].extract + '\nhttp://zh.wikipedia.org/wiki/' + title.replace(/\s/g, '_'));
                  }
              })
           }
      });
  };
  
  module.exports.info = {name:'wiki', example:'.w google', command:'w'};
  
subject: fix wiki url