Commit-editmsg [repack] -

: The blank lines at the top are reserved for your custom message.

It's easy to confuse COMMIT-EDITMSG with other .git files:

: When using git commit --amend , Git loads the previous commit message into COMMIT_EDITMSG so you can modify it.

To appreciate COMMIT-EDITMSG , it helps to see what happens behind the scenes during a standard Git lifecycle:

Let’s write a simple commit-msg hook that rejects any commit whose subject line does not start with a JIRA ticket number (e.g., PROJ-123: Fix the bug ): COMMIT-EDITMSG

The COMMIT-EDITMSG file enforces (or at least encourages) best practices that -m actively discourages.

To write your message: Press to enter "Insert Mode," then type your message. To save and exit: Press Esc , type :wq , and press Enter . To abort the commit: Press Esc , type :q! , and press Enter . 2. Aborting a Commit on Purpose

Create a text file named .gitmessage in your home directory. Add your preferred layout:

Here is a sample Bash script you can place in .git/hooks/commit-msg to ensure all commit messages start with a standard prefix (like feat: , fix: , or docs: ): : The blank lines at the top are

By mastering the use of COMMIT_EDITMSG —from basic recovery tricks to sophisticated automation with Git hooks—you unlock a new level of control over your project's history. A history with clear, consistent, and informative messages is not a luxury; it is a core asset that makes your project easier to maintain, debug, and understand for everyone involved. So, the next time you open a commit message editor, remember the little file working behind the scenes and commit to making your message a good one.

If you want to master Git, you must first master the COMMIT-EDITMSG . This article will explore what it is, why it exists, how to customize it, and how to leverage its hidden features to become a more effective developer.

This is transformative. While writing your commit message, you can scroll down and see exactly what code you are about to lock into history. You no longer need to switch back to a separate terminal tab to run git diff --cached .

To change your editor globally, use the core.editor command: git config --global core.editor "code --wait" Use code with caution. For Vim: git config --global core.editor "vim" Use code with caution. For Nano: git config --global core.editor "nano" Use code with caution. Using Templates To write your message: Press to enter "Insert

Found at .git/COMMIT_EDITMSG within your repository.

If you are interested in exploring how to edit previous commit messages using this file and git rebase -i , I can show you the necessary commands. Git Hook Opening COMMIT_EDITMSG File · Issue #43 - GitHub

Understanding COMMIT_EDITMSG: The Backbone of Git Commit Messages

: If you realize you aren't ready to commit, simply delete the text you wrote (or leave it empty) and save/close the file. Git will see the empty message and cancel the operation. By treating the COMMIT_EDITMSG