only look for pattern vars in env
only look for pattern vars in env

lukehoban/sweet.js,mozilla/sweet.js,mozilla/sweet.js,getshuvo/sweet.js,dashersw/sweet.js,sweet-js/sweet.js,renyaoxiang/sweet.js,sweet-js/sweet.js,lukehoban/sweet.js,getshuvo/sweet.js,sweet-js/sweet-core,renyaoxiang/sweet.js,dashersw/sweet.js