CODEWITHSUNDEEP
gitgit-merge
Artemix
Artemix

Reputation: 8655

Merging branches but leaving out certain files

At our company we have alpha and beta, when we are about to release a new version we do a git merge alpha (while on beta branch), so we merge all alpha into beta.

The problem with this approach is that we have some config files that shouldn't be merged into beta, that are alpha (and other development branches) only, but should not be git ignored either, nor belong to another repository because after all they do belong to that specific branch.

So, the "ideal" solution would be to have something like:

git merge alpha -commit-to-ignore

or just set the specific files to be ignored when and only when merging.

Not sure if those options even exist, or if its the best approach.

Upvotes: 1

Views: 280

Answers (1)

hspandher
hspandher

Reputation: 16733

If the changes in config files in branch alpha and beta are mutually exclusive i.e. they would cause a conflict, then you can simply merge it using ours merge strategy

git merge -s ours alpha

Otherwise, simplest solution would be to create a new branch from alpha. Delete the config files you don't want to merge, commit the changes and merge the new branch into beta. However, with this approach if you eventually merge beta into alpha, you'd loose the config files in alpha too in case of Fast-Forward Merge.

More preferable solution would be to create a separate commit in alpha which contains the config changes, now you can merge/rebase the rest of the branch into beta except that commit.

If the changes in config files is the latest commit, then you can easily do it as follows

git checkout -b temp_branch HEAD~1
git checkout beta
git merge temp_branch

If the commit lies somewhere in between then you need to rebase --onto to remove that particular commit, and then merge. To explain, let's say you have 

>> git log --oneline
2c10ba8 latest commit
088a38e config commit
c233f51 some other commit

>> git checkout -b temp_branch

# Now you need to remove 'config commit' with hash id 088a38e
>> git rebase --onto c233f51 088a38e 2c10ba8
# resolve if any conflict occurs

# Now your git log should look like shown below, with undesirable commit removed
>> git log --oneline
2c10ba8 latest commit
c233f51 some other commit

>> git checkout beta
>> git merge temp_branch

Upvotes: 1

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