forked from mirrors/jj
6c600e98cf
It's useful to know when you've modified a branch that exists on a remote. A typical case is when you have pushed a branch to a remote and then rewritten it. This commit adds an indication in the `branches` template keyword. A branch that needs to be pushed to a remote now has a `*` at the end (similar to how conflicted branches have a `?` at the end). Note that the indication only considers remotes where the branch currently exists, so there won't be an indication that the branch has not been pushed to a remote. Closes #254
67 lines
3.7 KiB
Markdown
67 lines
3.7 KiB
Markdown
# Branches
|
|
|
|
|
|
## Introduction
|
|
|
|
Branches are named pointers to revisions (just like they are in Git). You can
|
|
move them without affecting the target revision's identity. Branches
|
|
automatically move when revisions are rewritten (e.g. by `jj rebase`). You can
|
|
pass a branch's name to commands that want a revision as argument. For example,
|
|
`jj co main` will check out the revision pointed to by the "main" branch. Use
|
|
`jj branch list` to list branches and `jj branch` to create, move, or delete
|
|
branches. There is currently no concept of an active/current/checked-out branch.
|
|
|
|
|
|
## Remotes
|
|
|
|
Jujutsu identifies a branch by its name across remotes (this is unlike Git and
|
|
more like Mercurial's "bookmarks"). For example, a branch called "main" in your
|
|
local repo is considered the same branch as a branch by the same name on a
|
|
remote. When you pull from a remote (currently only via `jj git fetch`), any
|
|
branches from the remote will be imported as branches in your local repo.
|
|
|
|
Jujutsu also records the last seen position on each remote (just like Git's
|
|
remote-tracking branches). You can refer to these with
|
|
`<branch name>@<remote name>`, such as `jj new main@origin`. Most commands don't
|
|
show the remote branch if it has the same target as the local branch. The local
|
|
branch (without `@<remote name>`) is considered the branch's desired target.
|
|
Consequently, if you want to update a branch on a remote, you first update the
|
|
branch locally and then push the update to the remote. If a local branch also
|
|
exists on some remote but points to a different target there, `jj log` will
|
|
show the branch name with an asterisk suffix (e.g. `main*`). That is meant to
|
|
remind you that you may want to push the branch to some remote.
|
|
|
|
When you pull from a remote, any changes compared to the current record of the
|
|
remote's state will be propagated to the local branch. Let's say you run
|
|
`jj git fetch --remote origin` and the remote's "main" branch has moved so its
|
|
target is now ahead of the local record in `main@origin`. That will update
|
|
`main@origin` to the new target. It will also apply the change to the local
|
|
branch `main`. If the local target had also moved compared to `main@origin`
|
|
(probably because you had run `jj branch set main`), then the two updates will be
|
|
merged. If one is ahead of the other, then that target will be the new target.
|
|
Otherwise, the local branch will be conflicted (see next section for details).
|
|
|
|
|
|
## Conflicts
|
|
|
|
Branches can end up in a conflicted state. When that happens, `jj status` will
|
|
include information about the conflicted branches (and instructions for how to
|
|
mitigate it). `jj branch list` will have details. `jj log` will show the branch
|
|
name with a question mark suffix (e.g. `main?`) on each of the conflicted
|
|
branch's potential target revisions. Using the branch name to look up a revision
|
|
will resolve to all potential targets. That means that `jj co main` will error
|
|
out, complaining that the revset resolved to multiple revisions.
|
|
|
|
Both local branches (e.g. `main`) and the remote branch (e.g. `main@origin`) can
|
|
have conflicts. Both can end up in that state if concurrent operations were run
|
|
in the repo. The local branch more typically becomes conflicted because it was
|
|
updated both locally and on a remote.
|
|
|
|
To resolve a conflicted state in a local branch (e.g. `main`), you can move the
|
|
branch to the desired target with `jj branch`. You may want to first either
|
|
merge the conflicted targets with `jj merge`, or you may want to rebase one side
|
|
on top of the other with `jj rebase`.
|
|
|
|
To resolve a conflicted state in a remote branch (e.g. `main@origin`), simply
|
|
pull from the remote (e.g. `jj git fetch`). The conflict resolution will also
|
|
propagate to the local branch (which was presumably also conflicted).
|