How to Handle Merge Conflicts

Merging Changes

Merge conflicts are an inevitable part of collaborative development—and often a sign of a healthy, active codebase. They occur when Git encounters competing changes to the same section of code during pulls, branch merges, reverts, or cherry-picks. Picture this scenario: you're refactoring a critical function while a teammate simultaneously optimizes the same code block. When they push first and you attempt to pull their changes, Git wisely pauses the merge rather than making assumptions about which version to keep. This conflict resolution mechanism is one of Git's most valuable features, ensuring that no developer's work is silently overwritten and giving you complete control over how competing changes are reconciled.

Understanding how to efficiently resolve merge conflicts separates novice developers from seasoned professionals. The process requires both technical precision and collaborative judgment—skills that become increasingly valuable as codebases grow and teams expand.

What to Do with a Merge Conflict

1. When Git detects conflicting changes, it will halt the merge operation and clearly identify the affected files. Navigate to the conflicted file by opening the Source Control panel and locating the files listed under Merge Changes. These files are marked with a distinctive conflict indicator, making them immediately recognizable in your IDE.

2. Open the conflicted file to examine Git's conflict markers, which function as a roadmap to the competing changes:

   <<<<<<< HEAD (Current Change) Marks the beginning of your local changes—the version currently in your working branch.

   ======= Serves as the dividing line between your changes and the incoming modifications from the other branch.

   >>>>>>> branch-name (Incoming Change) Marks the end of the conflict block and identifies the source branch of the competing changes.

3. This is where your expertise and judgment become crucial. Modern IDEs like VS Code present intuitive options above each conflict block to streamline your decision-making:

   • Accept Current Change — Keep your version and discard the incoming changes
   • Accept Incoming Change — Adopt the other developer's modifications
   • Accept Both Changes — Merge both versions (use cautiously to avoid duplication)
   • Compare Changes — View a side-by-side diff for detailed analysis

   Evaluate the code contextually: consider functionality, performance implications, coding standards, and the broader impact on your application. Often, the best resolution involves manually combining elements from both versions or crafting an entirely new approach that incorporates the strengths of each. After selecting your preferred resolution, refine the code as needed to ensure it integrates seamlessly with your project's architecture.

4. Save the resolved file, ensuring all conflict markers have been removed and the code compiles correctly.
5. Once all conflicts across your project have been addressed, return to the Source Control panel to stage your resolution. Hover over Merge Changes and click the plus (+) icon that appears. This action tells Git that you've deliberately resolved the conflicts and are ready to proceed with the merge.
6. Complete the merge process by clicking the Commit button at the top of the Source Control panel . Consider crafting a descriptive commit message that explains how you resolved the conflict—future developers (including yourself) will appreciate this context.

7. Push your resolved changes to the remote repository when you're confident in the resolution. This final step makes your conflict resolution available to the entire team and ensures the project maintains forward momentum. Remember, thoroughly test your merged code before pushing—conflict resolution can sometimes introduce subtle integration issues that only surface during runtime.