是什麼混帳相當於承諾爲-a git的添加

Question

git commit -a自動階段的所有修改過的文件：

-a 
--all 

    Tell the command to automatically stage files that have been modified 
    and deleted, but new files you have not told git about are not affected. 

什麼是-a爲git add等價？

Answer 1

相當於git add -u