gistfile1.js

// Twitter Issue (Can't tweet exclamation mark with v1.1)
// https://dev.twitter.com/discussions/12378
// https://github.com/mikeal/request/issues/578

var escape = function(str) {
  return encodeURIComponent(str).replace(/[!*()']/g, function(character) {
    return '%' + character.charCodeAt(0).toString(16);
  });
};

var tweet = '!!!';

var options = {
  method: 'POST',
  url: ['https://api.twitter.com/1.1/statuses/update.json?status=', escape(tweet)].join(''),
  json: true
};

request(options, function(...))