Commit-editmsg Best Official

Think of COMMIT_EDITMSG as Git’s . Just as the staging area ( git add ) allows you to curate which code changes go into a commit, COMMIT_EDITMSG provides a curated environment for the message that will explain those changes.

Here is an example of a simple Bash script you could place in .git/hooks/commit-msg to check the title length of COMMIT_EDITMSG :

Closes #234

: Always leave a completely blank line (line 2) between your subject line and the detailed body description. COMMIT-EDITMSG

Beyond simple commits, COMMIT_EDITMSG is also used during more advanced Git operations. When you perform an interactive rebase and squash multiple commits together, Git generates a combined commit message in the COMMIT_EDITMSG file, giving you the opportunity to clean it up and craft a single, coherent message for the new, consolidated commit.

: You write your commit message in the editor. Git often includes commented-out lines (starting with ) that list the changes being committed to guide you. Finalization

If you close the editor without saving, or if you delete all the text, Git detects an empty message and aborts the commit entirely, leaving your project state unchanged. Common Issues and How to Fix Them Think of COMMIT_EDITMSG as Git’s

git commit -m "docs(readme): update installation instructions"

If you paste the actual contents of your COMMIT-EDITMSG , I will give you a with specific corrections.

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: ): Beyond simple commits, COMMIT_EDITMSG is also used during

| Problem | Example | Fix | |---------|---------|-----| | | (no body) | Add why and how for non-obvious changes | | Just repeats subject | “Fix login bug – fixed the login bug” | Delete redundancy | | No reasoning | “Changed max length from 50 to 100” | “Increase max length to 100 because API now accepts up to 100 chars” | | Internal references missing | “Fixes issue” | “Fixes #427 – rate limiting on mobile” | | No “why” for breaking changes | “Changed config format” | “BREAKING CHANGE: config uses YAML instead of JSON – migration script in /docs” |

Because COMMIT_EDITMSG is a physical file on your disk, Git provides native automated scripts ("hooks") that can read and alter its contents before your commit registers. 1. prepare-commit-msg

Every time you run git commit without the -m flag, Git opens your default text editor and asks you to type a message. Behind the scenes, Git is not just capturing your keystrokes in temporary memory. It is interacting with a specific, temporary file located within your repository's administrative directory: .