Question

"Please commit your changes or stash them before you merge. Aborting" error occurs when trying to merge branches in Git and the current branch has uncommitted changes. To resolve this issue, either commit the changes or stash them using the Git stash command. This article will discuss the cause of the error and provide instructions on how to resolve it.

Table of Contents

1. What is the problem?
2. How to solve this problem?
   1. Commit the changes
   2. Stash the changes
3. Conclusion
4. Reference

1. What is the problem? #

The "Please commit your changes or stash them before you merge. Aborting" error's message appears when attempting to merge branches in Git and the current branch has uncommitted changes.

In the below example, I've made a change in a file in feature-branch branch and trying to merge it into master branch without committing the change.

$ git checkout feature-branch
$ echo "new changes" >> file.txt
$ git checkout master
$ git merge feature-branch
error: Your local changes to the following files would be overwritten by merge:
file.txt
Please, commit your changes or stash them before you merge.
Aborting

As you can see, you could reproduce the same error by following these steps:

• Checkout a branch where you have made changes to a file.
• Switch to another branch without committing or stashing the changes.
• Attempt to merge the first branch into the second branch.

This error can occur in various scenarios and may be encountered by developers while working with Git.

2. How to solve this problem? #

You must have realized how to do it by now. The message error already tell you what to do, committing the changes or stashing the changes. Let's me guide you to each solution step-by-step.

1. Commit the changes

The simplest solution to this error is to commit the changes in the current branch before attempting to merge with another branch. This will ensure that the changes are saved and can be easily retrieved if needed.

• Check the status of the current branch to see the changes that have been made:
$ git status
• Add the changes to the stage:
$ git add [file_name]
• Commit the changes:
$ git commit -m "Committing changes before merge"
• Switch to the branch you want to merge into:
$ git checkout [branch_name]
• Merge the branch with the changes:
$ git merge [branch_with_changes]

2. Stash the changes

Another solution to this error is to stash the changes in the current branch before attempting to merge with another branch. Stashing allows you to save the changes without committing them, so they can be retrieved later if needed.

• Check the status of the current branch to see the changes that have been made:
$ git status
• Stash the changes:
$ git stash
• Switch to the branch you want to merge into:
$ git checkout [branch_name]
• Merge the branch with the changes:
$ git merge [branch_with_changes]
• Retrieve the stashed changes:
$ git stash apply

Caution When stashing changes, it is important to remember that the stash is not permanent and may be lost if not reapplied or saved to a branch. It is recommended to regularly save stashes to a branch or reapply them to ensure the changes are not lost.

Both solutions ensure that the changes are saved and can be retrieved if needed, while also allowing the merge to proceed without interruption.

3. Conclusion#

In this article, we've discussed the error "Please commit your changes or stash them before you merge. Aborting" and its solutions of committing or stashing changes in the current branch before merging. Both solutions ensure changes are saved and retrievable while allowing the merge to proceed. If you have any questions or comments, feel free to leave them below. Have a nice day!

4. Reference#

For further information, please visit:

1. Git stash: https://git-scm.com/docs/git-stash
2. Git commit: https://www.atlassian.com/git/tutorials/saving-changes/git-commit
3. Git merge: https://www.atlassian.com/git/tutorials/using-branches/git-merge
4. Understanding the Git Workflow: https://guides.github.com/introduction/flow/