Coding⏱️ 2 min read📅 2026-05-30

How to Fix: Using merge drivers for specific merges

Git merge conflicts can be resolved with union driver for specific files.

Quick Answer: Use the merge driver in .gitattributes file to specify a default merge strategy, such as 'union', for all current conflicts.

When working with Git merge drivers, it can be frustrating when you're faced with conflicts that could be resolved by simply adding changes together. This is particularly true for union driver merges. The issue you're facing arises from the fact that Git only allows you to specify drivers on a per-file basis using .gitattributes. However, there's a workaround that enables you to instruct Git to use the union driver automatically for all current conflicts.

💡 Why You Are Getting This Error

  • Git doesn't allow union driver merges on a per-file basis.

🚀 How to Resolve This Issue

Method 1: Enable Union Driver for All Conflicts

  1. Step 1: Open your .gitattributes file and add the following line at the top: git merge.driver=union

Method 2: Update Git Configuration

  1. Step 1: Run the following command in your terminal: git config --global merge.driver union

✨ Wrapping Up

By implementing either of these methods, you can instruct Git to automatically use the union driver for all current conflicts, saving you time and effort in resolving merge issues.

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