4
When Bazaar tries to push one branch onto another, it requires that the
5
destination branch must be ready to receive the source branch. If this isn't
6
the case, then we say that the branches have ``diverged``. Branches are
7
considered diverged if the destination branch's most recent commit is one that
8
has not been merged (directly or indirectly) by the source branch. To recover
9
from diverged branches, one must merge the missing revisions into the source
12
This situation commonly arises when using a centralized workflow with local
13
commits. If someone else has committed new work to the mainline since your
14
last pull and you have local commits that have not yet been pushed to the
15
mainline, then your local branch and the mainline have diverged.
17
Discovering What Has Diverged
18
-----------------------------
20
The ``bzr missing`` command is used to find out what revisions are in another
21
branch that are not present in the current branch, and vice-versa. It shows a
22
summary of which extra revisions exist in each branch. If you want to see the
23
precise effects of those revisions, you can use ``bzr diff --old=other_branch``
24
to show the differences between other_branch and your current branch.
29
The solution is to merge the revisions from the mainline into your local
30
branch. To do so, use ``bzr merge`` to get the new revisions from the
31
mainline. This merge may result in conflicts if the other developer's changes
32
overlap with your changes. These conflicts should be resolved before
33
continuing. After any conflicts have been resolved, or even if there were no
34
conflicts, Bazaar requires that you explicitly commit these new revisions
35
to your local branch. This requirement gives you an opportunity to test the
36
resulting working tree for correctness, since the merged revisions could have
37
made arbitrary changes. After testing, you should commit the merge using
38
``bzr commit``. This clears up the diverged branches situation. Your local
39
branch can now be pushed to the mainline.