Let‘s split our changes into separate commits. We‘ll be able to check over our changes before staging them all from the terminal. Then, we‘ll see the positive effect it has on our commit history.
git add --patch
1. Then in the cmd, we can type ‘s‘ stands for splite the changes into chunks.
2. Then type ‘q‘ stands for quite.
3. Add commit message for that part of changes
4. Then run git add --patch
5. Repeact 1-4 until all changes are included
[Git] Use git add --patch for better commit history and mitigating bugs
原文：http://www.cnblogs.com/Answer1215/p/6275403.html