BaoBranch
A tool on top of Git to help you navigate and manage chained branches.
A Baobab tree has a really big long main trunk and a bunch of small branches at the tip.
Installation
- Install the Github CLI
- log into the Github CLI
- Install BaoBranch via npm
npm i -g baobranch
Concepts
Baobranch simplifes making, managing, and navigating branches that are chained together. It achieves this by attempting to enforce a 1-branch-1-commit model. i.e. each branch is a single commit.
Why Baobranch?
Baobranch is intended to be a simple, lightweight tool that helps you manage branches in a way that is more intuitive and easier to understand. It is not intended to replace Git, but rather to provide a simpler interface for managing branches.
If you'd like a more robust and feature-rich DVCS, you might want to consider Jujutsu which does lots of similar things to Baobranch, but with more complexity and more concepts.
Why chain branches?
It makes it easier to create focused PRs for easy and quick reviewing.
Why not just use Git?
Baobranch makes it easy to chain branches together. Consider the following Git tree:
* 0b20366 (D)
* 6708db3 (C)
| * b62d30d (B)
|/
* f048e9c (HEAD -> A)
* 0e59234 (main)
You have the main branch, from there you have a commit-branch A. From there B and C branch off of A, and D branches off of C. We are also currently on branch A.
If you want to make a change to A, for example, make a new file "e". You can do the following:
touch e && echo 'contents of e' > e
If you commit this, you now have a new commit on branch A:
git add e && git commit -m 'add file e'
You now have the following:
* 9b664c7 (HEAD -> A) add file e
| * 0b20366 (D)
| * 6708db3 (C)
|/
| * b62d30d (B)
|/
* f048e9c a (old commit)
* 0e59234 (main)
Now if you want to keep this in order so that you can merge PRs associated with these branches and handle any conflicts, you need to either merge the new tip of A
into B
, C
, and D
. Or you need to rebase B
and C
, onto the new tip of A
and D
onto the new tip of C
to create the following:
* 993cc6a (HEAD -> D) Merge branch 'A' into D
|\
* | 0b20366 d (old commit)
| | * 3a9fbfd (C) Merge branch 'A' into C
| |/|
|/|/
* | 6708db3 c (old commit)
| | * 45d757d (B) Merge branch 'A' into B
| | |\
| | |/
| |/|
| * | 9b664c7 (A) add file e
|/ /
| * b62d30d b (old commit)
|/
* f048e9c a (old commit)
* 0e59234 (main)
Messy, and lots of work. Rebasing would also require you to resolve conflicts in each commit of each branch. This is why Baobranch is useful and tries to make it easy to enforce a commit-branch.
With baobranch
Okay let's see this workflow again with Baobranch.
* 90cb39a (D) d
* 30ee5d7 (C) c
| * c05d40e (B) b
|/
* 26106c3 (HEAD -> A) a
* 0e59234 (main) tip
Let's make a file e
again.
touch e && echo 'contents of e' > e
Now instead, let's amend it to A
bb amend
bb amend e
Now let's look at the graph:
* 94fc6bf (HEAD -> A) a
| * 90cb39a (D) d
| * 30ee5d7 (C) c
| | * c05d40e (B) b
| |/
| * 26106c3 (A - STALE REF) a
|/
* 0e59234 (main) tip
You can see it looks similar to before, but with the bb
or bb list tree
command, you can see that the A
branch has been updated to the new commit which is NOT a new commit on A
, but rather a modified commit on main
. You will also notice that B
and C
are now children of a stale reference to A
.
Let's use Baobranch to see the children:
bb ls children
B (orphaned)
C (orphaned)
You will see that B and C are now considered "orphans" of A
. To resolve this we can do one of the following:
- We can
bb rebase
onto A
to make them children of A
again and then again for D
on C
, but that would take a lot of work. - We can use the
bb evolve
command which will automatically do all the rebasing for us:
Let's go with 2.
bb evolve
Rebasing A onto main...
Current branch A is up to date.
Rebase complete.
Rebasing B onto A...
Rebase complete.
Rebasing C onto A...
Rebase complete.
Rebasing D onto C...
Rebase complete.
Evolve operation complete.
Now the tree is balanced again:
* a769873 (HEAD -> D) d
* 8756a5b (C) c
| * c4d085d (B) b
|/
* 94fc6bf (A) a
* 0e59234 (main) tip
Committing vs branching
A branch is a single commit. When you perform a bb commit
, you are creating a new branch. If you want to make changes to a branch, you probably want to amend or unamend from it using bb amend [parital filepath]
or bb unamend [parital filepath]
.
Usage
Help
bb help
bb --help
Show branch tree (default)
Commands:
bb Show branch tree (default) [default]
bb list [command] List parent or children branches [aliases: ls]
bb next Check out to a child branch
bb prev Check out to the parent branch
bb amend [filename] Amend changes to the previous commit
bb unamend <filename> Remove files from the last commit and move them
to staging
bb evolve Rebase the current orphaned branch onto a fresh
reference of its parent branch as well as all
of its descendants
bb rebase [branch] Rebase the current branch-commit onto the given
branch
bb commit Create a new branch and commit changes
bb sync [command] Synchronizes with remotes
bb push <command> Pushes changes to remotes [aliases: p]
bb pull Pull updates and track orphaned branches
bb completion Generate shell completion script
Options:
--version Show version number [boolean]
-h, --help Show help [boolean]
Show the tree
bb
bb list tree
bb ls t
Create a new branch-commit
Creates a new git branch and initializes a commit. Don't forget to stage your changes!
git add -A && bb commit
Amend to a branch-commit
Amends the current branch-commit with the changes you have staged.
bb amend
Alternatively you can specify a file to amend:
touch partial/path/to/file && \
touch partial/path/to/another/file && \
bb amend partial/path/to
Unamend from a branch-commit
Unamends the current branch-commit with the changes you have staged.
bb unamend partial/path/to/file
Navigate between branch-commits
Children (orphaned or not)
bb next
Parent (stale or not)
bb prev
Any branch-commit
git checkout <branch name>
Rebase a branch-commit
Currently you have to check out the current branch-commit you want to rebase and list its destination parent.
git checkout <branch name> && bb rebase <parent branch name>
NOTE: You must use bb reabse
and bb rebase --continue / --abort
to rebase a branch-commit instead of using git rebase
or else baobranch will lose track of the orphaned children.
Evolve the tree
Self, all descendants including orphans
Automatically rebases the current branch-commit onto its parent as well as all of its descendants, orphaned or not onto their updated locations. For example, if you have the following tree:
* e7680fc (D) d
* ed97e04 (C) c
* 201996a (A - STALE REF) a
| * 8d30562 (B) b
| * 2c654e4 (HEAD -> A) a
| | * 0e59234 (main) tip
| |/
| * 40531e1 (main - OLD TIP) mid
|/
* 78dd470 (main - OLD TIP) base
and run:
bb evolve
bb evolve --scope=full
The result:
bb evolve
Rebasing A onto main...
Rebase complete.
Rebasing B onto A...
Rebase complete.
Rebasing C onto A...
Rebase complete.
Rebasing D onto C...
Rebase complete.
Evolve operation complete.
bb
* cdae2a2 (HEAD -> D) d
* 803240d (C) c
| * ca8b9f9 (B) b
|/
* dd4d2c4 (A) a
* 0e59234 (main) tip
Only direct descendants
Automatically rebases the current branch-commit onto its parent as well as all of its non-orphaned descendants onto their updated locations. For example, if you have the following tree:
* e7680fc (D) d
* ed97e04 (C) c
* 201996a (A - STALE REF) a
| * 8d30562 (B) b
| * 2c654e4 (HEAD -> A) a
| | * 0e59234 (main) tip
| |/
| * 40531e1 (main - OLD TIP) mid
|/
* 78dd470 (main - OLD TIP) base
and run:
bb evolve --scope=directs
The result:
bb evolve --scope=directs
Rebasing A onto main...
Rebase complete.
Rebasing B onto A...
Rebase complete.
Evolve operation complete.
bb
* 0a14960 (HEAD -> B) b
* 1689d5b (A) a
* 0e59234 (main) tip
| * e7680fc (D) d
| * ed97e04 (C) c
| * 201996a (A - STALE REF) a
|/
* 78dd470 (main - OLD TIP) base
Only the current branch-commit
Automatically rebases the current branch-commit onto its parent. For example, if you have the following tree:
* e7680fc (D) d
* ed97e04 (C) c
* 201996a (A - STALE REF) a
| * 8d30562 (B) b
| * 2c654e4 (HEAD -> A) a
| | * 0e59234 (main) tip
| |/
| * 40531e1 (main - OLD TIP) mid
|/
* 78dd470 (main - OLD TIP) base
and run:
bb evolve --scope=self
The result:
bb evolve --scope=self
✔ Attempt to rebase single branch-commit (A) onto branch main? yes
Rebasing A onto main...
Rebase complete.
bb
* 7a48e4b (HEAD -> A) a
* 0e59234 (main) tip
| * e7680fc (D) d
| * ed97e04 (C) c
| * 201996a (A - STALE REF) a
| | * 8d30562 (B) b
| | * 2c654e4 (A - STALE REF) a
| |/
|/|
* | 40531e1 (main - OLD TIP) mid
|/
* 78dd470 (main - OLD TIP) base
Listing branches
List current branch
Lists the current branch and associated PR number.
bb ls
bb list
Accepts a --format
flag to specify the output format. The default is both
.
bb ls --format=both
my-branch-name
bb ls --format=branch
my-branch-name
bb ls --format=pr
List children
Lists the children of the current branch.
bb ls children
bb ls c
List parent
Lists the parent of the current branch.
bb ls parent
bb ls p
Pushing branches to remotes
Push the current branch
Pushes the current branch to the remote.
git push -f
Push all branches
Pushes all branches to the remote.
bb push all
Push the current branch-commit and all direct descendants
Pushes the current branch-commit and all of its non-orphaned descendants to the remote.
bb push chain
Synchronizing with remotes
Pull the main branch and clean up branches with merged / closed PRs
Pulls the main branch and deletes local branches with merged / closed PRs. This helps clean up bb list tree
output.
bb sync
Synchronize PRs with branch layout
This command does the following:
- Finds all PRs associated with the local branches of the repo
- Updates their descriptions to include a table linking to children an parent branches' PRs if they exist
- Updates the PRs' merge-base to the associated parent branch
bb sync prs