git-rebase-workshop

Small repo to train the team on git rebase

Workshop

1 - Clone this repo

2 - Non interactive rebase: update dev-1 with the latest trunk

• Checkout dev-1 branch : git checkout dev-1
• Rebase dev-1 on top of trunk. Syntax is git rebase MY_DESTINATION (git rebase trunk) This will cut & paste the dev-1 branch on top of trunk

3 - Interactive rebase: Renaming a commit

• On the same dev-1 branch, we will modify a commit message
• Syntax is git rebase -i MY_DESTINATION (git rebase -i trunk)
• Welcome to VIM!
  • Move with the arrow keys
  • You can switch mode : Press i to be able to insert text esc to get out of insert mode
  • To save esc + : + x
  • To cancel the last action: esc + u (works like ctrl z)
• To rename a commit message, you want to change the beginning of a commit with reword
• Save: Press esc + : + x
• You are now stopping in the selected commit
• Rename by typing i then what ever text change you want
• Save: Press esc + : + x

4 - Interactive rebase: Move a commit

• On the same dev-1 branch, we want to move the commit called "REBASE ME..." in second position (just after "updating text")
• Do an interactive rebase: git rebase -i trunk
• In VIM you need now to reorder the commit:
  • Go to the the relevant line with your arrows
  • Cut a line: esc + d + d
  • Move where you want to paste with the arrow
  • Paste with p
• Save: Press esc + : + x

5 - Interactive rebase: Fixup commit (regroup two commit together and delete the commit message)

• Do an interactive rebase : git rebase -i trunk
• Exactly as you did for renaming with reword but this time use fixup on the "REBASE ME..." commit
• Save: Press esc + : + x

6 - Interactive rebase: Rebase on top of another branch

Sometime a dev need someone else code.

• git checkout dev-2
• Rebase dev-2 on top of dev-1 : git rebase -i origin/dev-1
• Save: Press esc + : + x
• Panic! There is a conflict
• Remember: If you are lost in a conflict: git rebase --abort
• Fix the conflict as usual (replace the Hello word text)
• Stage all of your conflict resolution: git add .
• Continue the rebase (this will commit you changes) git rebase --continue
• In vim you can edit you commit message and/or save directly
• Save: Press esc + : + x

7 - dev-2 branch is a mess! Time to cleanup before the review

Cleaning up a branch will highlight works and help reviewer to read a PR. If you do it regularly, it take only few second and helps a lot to follow the development logic.

• When playing with rebase especially at the beginning DO A COPY of your branch git checkout -b dev-2-save then go back git checkout dev-2
• Task 1: move REBASE ME: fix wrong number inside add more button commit
• Task 2: regroup all relevant "click me button" related commits into one
  • "Add a click me button"
  • "End of the day WIP save"
  • "Forgot to commit this change"
  • "Bug fix reorder"
  • "No ops: formatting"
• Task 3: rename commits to end up with 3 commits
  • Add confetti library
  • Feat - Add a click me button
  • Feat - Add more button