發送短信 : 18 million links in commit messages: purpose, evolution, and decay

  _____     _____     _____      ___      ______  
 |__  //   |  ___||  / ____||   / _ \\   /_____// 
   / //    | ||__   / //---`'  / //\ \\  `____ `  
  / //__   | ||__   \ \\___   |  ___  || /___//   
 /_____||  |_____||  \_____|| |_||  |_|| `__ `    
 `-----`   `-----`    `----`  `-`   `-`  /_//     
                                         `-`