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re-base

re-base - :fire: A Relay inspired library for building React.js + Firebase applications. :fire:


What's the difference between 'git merge' and 'git rebase'?

What's the difference between git merge and git rebase?


Source: (StackOverflow)

Git: How to rebase to a specific commit?

I'd like to rebase to a specific commit, not to a HEAD of the other branch:

A --- B --- C          master
 \
  \-- D                topic

to

A --- B --- C          master
       \
        \-- D          topic

instead of

A --- B --- C          master
             \
              \-- D    topic

How can I achieve that?


Source: (StackOverflow)

How to squash all git commits into one?

How do you squash your entire repository down to the first commit?

I can rebase to the first commit, but that would leave me with 2 commits. Is there a way to reference the commit before the first one?


Source: (StackOverflow)

In git, what is the difference between merge --squash and rebase?

I'm new to git and I'm trying to understand the difference between a squash and a rebase. As I understand it you perform a squash when doing a rebase.


Source: (StackOverflow)

How to get "their" changes in the middle of conflicting Git rebase?

I have conflicting branches, branch2 branched from branch1.

Let's say when rebasing branch2 on current branch1, while resolving conflicts, I decide to take some (not all) of "their" (i.e. branch1) files as-is. How do I do that?

I tried:

git checkout branch1:foo/bar.java
fatal: reference is not a tree: TS-modules-tmp:foo/bar.java

git checkout refs/heads/branch1:foo/bar.java
fatal: reference is not a tree: refs/heads/TS-modules-tmp:foo/bar.java

Source: (StackOverflow)

Can I make fast forwarding be off by default in git?

I can't really ever think of a time when I would use git merge rather than git rebase and not want to have a commit show up. Is there any way to configure git to have fast forwarding off by default? The fact that there's an --ff option would seem to imply that there's a way, but I can't seem to find it in the documentation.


Source: (StackOverflow)

Combine the first two commits of a Git repository?

Suppose you have a history containing the three commits A, B and C:

A-B-C

I would like to combine the two commits A and B to one commit AB:

AB-C

I tried

git rebase -i A

which opens up my editor with the following contents:

pick e97a17b B
pick asd314f C

I change this to

squash e97a17b B
pick asd314f C

Then Git 1.6.0.4 says:

Cannot 'squash' without a previous commit

Is there a way or is this just impossible?


Source: (StackOverflow)

Git refusing to merge unrelated histories

During git rebase origin/development following error message is shown from git:

fatal: refusing to merge unrelated histories
Error redoing merge 1234deadbeef1234deadbeef

My git version is 2.9.0. Used to work fine in previous version.

How can I continue this rebase allowing unrelated histories with the forced flag introduced in new release?


Source: (StackOverflow)

Undoing a git rebase

Does anybody know how to easily undo a git rebase?

The only way that comes to mind is to go at it manually:

  • git checkout the commit parent to both of the branches
  • then create a temp branch from there
  • cherry-pick all commits by hand
  • replace the branch in which I rebased by the manually-created branch

In my current situation this is gonna work because I can easily spot commits from both branches (one was my stuff, the other was my colleague's stuff).

However my approach strikes me as suboptimal and error-prone (let's say I had just rebased with 2 of my own branches).

Any ideas?

Clarification: I'm talking about a rebase during which a bunch of commits were replayed. Not only one.


Source: (StackOverflow)

Squash the first two commits in Git? [duplicate]

This question already has an answer here:

With git rebase --interactive <commit> you can squash any number of commits together into a single one.

That's all great unless you want to squash commits into the initial commit. That seems impossible to do.

Are there any ways to achieve it?


Moderately related:

In a related question, I managed to come up with a different approach to the need of squashing against the first commit, which is, well, to make it the second one.

If you're interested: git: how to insert a commit as the first, shifting all the others?


Source: (StackOverflow)

Change first commit of project with Git? [duplicate]

This question already has an answer here:

I want to change something in the first commit of my project with out losing all subsequent commits. Is there any way to do this?

I accidentally listed my raw email in a comment within the source code, and I'd like to change it as I'm getting spammed from bots indexing GitHub.


Source: (StackOverflow)

git cherry-pick says "...38c74d is a merge but no -m option was given"

I made some changes in my master branch and want to bring those upstream. when I cherry-pick the following commits however I get stuck on fd9f578 where git says:

$ git cherry-pick fd9f578
fatal: Commit fd9f57850f6b94b7906e5bbe51a0d75bf638c74d is a merge but no -m option was given.

What is git trying to tell me and is cherry-pick the right thing to be using here? The master branch does include changes to files which have been modified in the upstream branch, so I'm sure there will be some merge conflicts but those aren't too bad to straighten out. I know which changes are needed where.

These are the commits I want to bring upstream.

e7d4cff added some comments...
23e6d2a moved static strings...
44cc65a incorporated test ...
40b83d5 whoops delete whitspace...
24f8a50 implemented global.c...
43651c3 cleaned up ...
068b2fe cleaned up version.c ...
fd9f578 Merge branch 'master' of ssh://extgit/git/sessions_common
4172caa cleaned up comments in sessions.c ...

Source: (StackOverflow)

Hg: How to do a rebase like git's rebase

In Git I can do this:

1. Start working on new feature:
$ git co -b newfeature-123  # (a local feature development branch)
do a few commits (M, N, O)

master A---B---C
                \
newfeature-123   M---N---O

2. Pull new changes from upstream master:
$ git pull
(master updated with ff-commits)

master A---B---C---D---E---F
                \
newfeature-123   M---N---O

3. Rebase off master so that my new feature 
can be developed against the latest upstream changes:
(from newfeature-123)
$ git rebase master

master A---B---C---D---E---F
                            \
newfeature-123               M---N---O


I want to know how to do the same thing in Mercurial, and I've scoured the web for an answer, but the best I could find was: git rebase - can hg do that

That link provides 2 examples:
1. I'll admit that this: (replacing the revisions from the example with those from my own example)

hg up -C F  
hg branch -f newfeature-123  
hg transplant -a -b newfeature-123 

is not too bad, except that it leaves behind the pre-rebase M-N-O as an unmerged head and creates 3 new commits M',N',O' that represent them branching off the updated mainline.

Basically the problem is that I end up with this:

master A---B---C---D---E---F
                \           \
newfeature-123   \           M'---N'---O'
                  \
newfeature-123     M---N---O

this is not good because it leaves behind local, unwanted commits that should be dropped.

  1. The other option from the same link is
hg qimport -r M:O
hg qpop -a
hg up F
hg branch newfeature-123
hg qpush -a
hg qdel -r qbase:qtip

and this does result in the desired graph:

master A---B---C---D---E---F
                            \
newfeature-123               M---N---O

but these commands (all 6 of them!) seem so much more complicated than

$ git rebase master

I want to know if this is the only equivalent in Hg or if there is some other way available that is simple like Git.


Source: (StackOverflow)

Insert a commit before the root commit in Git?

I've asked before about how to squash the first two commits in a git repository.

While the solutions are rather interesting and not really as mind-warping as some other things in git, they're still a bit of the proverbial bag of hurt if you need to repeat the procedure many times along the development of your project.

So, I'd rather go through pain only once, and then be able to forever use the standard interactive rebase.

What I want to do, then, is to have an empty initial commit that exists solely for the purpose of being the first. No code, no nothing. Just taking up space so it can be the base for rebase.

My question then is, having an existing repository, how do I go about inserting a new, empty commit before the first one, and shifting everyone else forward?


Source: (StackOverflow)

How to abort an interactive rebase if --abort doesn't work?

I've got myself into a muddle via an interactive rebase, and I now wish to abort it. (i.e. go back to the point before I was dropped into interactive rebase mode, in my case via git pull --rebase.) The way to do this seems to be via git rebase --abort, but this doesn't work:

$ git rebase --abort
error: Ref refs/heads/master is at 55b388c141b1485b1acd9e050dbeb0eb90ef2ee7 but
expected b918ac16a33881ce00799bea63d9c23bf7022d67
fatal: Cannot lock the ref 'refs/heads/master'.
Could not move back to refs/heads/master

How can I get out of interactive rebase mode, and clean up all references to it? (git reset --hard succeeds, but doesn't drop me out of rebase mode.)


Source: (StackOverflow)