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Git branching and stuff

Create new feature-branch

1) Ensure you are on master and you have the latest code

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git checkout master

2) Ensure you have the latest code

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git fetch
git status
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git pull
# or
git pull --ff-only # This prevents automatic merge commits from just pulling

3) Create new feature-branch

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git checkout -b feature/<short-description-alphanumeric-lowercase-with-dashes>

Commit & Push

1) Check which changes you have made

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git status

2) Selectively add new files not tacked yet by git / removed files

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git add <path-spec>

3) Selectively add and review changes to existing (tracked files)

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git add -p .
# or
git add -p <path-spec>

4) Create a commit with a reasonable commit message
When using a CLI editor, after saving and closing the message file git will proceed with the commit automagically!

To abort: Simply safe an empty file and the commit get’s aborted

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git commit -m "<reasonable-commit-message>"
# or if you want to use an editor
git commit
# and with more helpeful output
git commit -v

5) optional Fix files changes to included in the previous commit (ONLY if NOT PUSHED yet)

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1. add files / changes as noted previously
2. instead of a normal commit, do:
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git commit --amend -m "<reasonable-commit-message>"

or if you want to use an editor

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git commit --amend
# and with more helpeful output
git commit --amend -v

6) optional fix for remote changed commits (Usually should not happen on feature-branch) \

WARNING: Rebase can have destructive consequences, only do this if you known what you are doing!

make sure you have NO unchanged files / changes

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git pull --rebase

7) Do the final push (after one / many commits)

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git push

If this is your first push, it will fail, because git does not yet know where to put the branch on the remote repo.
Git will output an example on how to fix this based on the local branch name, e.g

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git push --set-upstream origin <your-feature-branch-name>

Sync from “mainline”

0) Ensure your branch is backed Up before sync by committing & pushing

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git commit ...
git push

1) Update repo with latest remote data

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git fetch

2) Check what changed

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git log --graph --oneline --decorate HEAD..origin/master
# For more details
git log --graph HEAD..origin/master

3a) Normal merge

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git merge origin/master
# opon merge conflicts:
git merge --abort # to cancel merge
# use editor like vim and git add to resolve conflicts
git merge --continue # to resume merge after resolution

3b) Rebase (advanced)
WARNING: Rebase can have destructive consequences, only do this if you known what you are doing!

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git rebase -i origin/master
# an editor will open and show which commits will be rebased
# Additional rebase behaviour can be set there, but this is strongly discuraged during sync!
# after saving and closing the rebase plan file the rebae is executed one commit at a time
# upon getting a conflict
git rebase --abort # to cancle rebase
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git status # this will show 
# what rebase operation was executed last, that failed
# what rebase opteration will happen next
# what files contain conflicts
# use editor like vim and git add to resolve conflicts
git rebase --continue # to continue the rebase process after resulution
git rebase --skip # in case the rebase does not continue because the commit is now empty after resulution
# This might happen if your changes were already made by another on the master branch

Close Pull Request + Merge to “mainline”

AFTERWARDS, if no pipeline with automatic versioning exists:

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git checkout master
git pull
git status
git tag | sort -V | tail
git tag <appropriate-new-tag-on-merge-commit>
git push origin <previously-created-tag>

That’s it so far.

This post is licensed under CC BY 4.0 by the author.