Abstract


Benefits


Concise History

  • Sometimes, there are commits that are used to tested the idea
  • If we don’t clean them up, when people branch out, these testing idea commits will follow too which make it harder to read and understand the development of the project
  • To prevent meaningless trails and errors commits from polluting the git history, especially when others are branching out

Basics


Include commits to rebase

  • git rebase -i HEAD~<NUM_COMMITS>
  • NUM_COMMITS is the number of commits, including the current commit HEAD is pointing to

Check the rebase plan

  • git rebase --edit-todo

Continue with rebase after resolving a Merge Conflict

  • git rebase --continue

Abandon this current rebase

  • git rebase --abort
  • Use when we messed up, and don’t know what to do

Merge

  • On the branch(FEATURE_BRANCH) we want to merge back: git rebase <MAIN_BRANCH>
  • Checkout out to MAIN_BRANCH: git rebase <FEATURE_BRANCH>
  • Personally I like to have a pull request, merge, then Remove feature branch from Git History

Features


Edit changes in a past commit

  • Initialise the rebase, and set e to the commit we want to modify
  • After modification, run git commit --amend
  • Complete the rebase with git rebase --continue
  • This will create a new commit, we can then proceed to rebase again to drop the previous old commits

Drop commits in the commit history

  • Initialise the rebase, and set d to the commit we want to drop

Rewrite commit messages

  • Initialise the rebase, and set r to the commit we want to modify

Combine multiple commits into one

  • Initialise the rebase, and set s to the commit we want to modify

Info

  • Make sure the oldest commit in the included commits can’t be squashed
  • Or we will get error: cannot 'squash' without a previous commit error

Remove feature branch from History

  • Initialise the rebase, include commits between the merged commit(inclusive) and the commit(inclusive) where the feature branch starts
  • If we just want to remove the feature branch, we can just save and quite the rebase plan. And it is done