Git Linear Hook

Automatically add Linear ticket IDs to commit messages

SuperHappyDevHouse 66 Lightning Talk • Built with Claude

Today at SuperHappyDevHouse 66

Tried out a recent AI tool that was posted on Hacker News that automatically organizes commits https://github.com/edverma/git-smart-squash
I suggested it would be nice if it could include the linear ticket id in each commit since they make it easier to know where code came from
Someone else suggested that this should belong to a separate git commit hook.
Found that tool can do it via the prompt
But thought it would be a useful tool anyway

From trying someone else's tool → building my own

The Solution

A Git hook that automatically extracts Linear ticket info from branch names

Branch:

feature/abc-601-user-authentication-system

Your commit:

git commit -m "add password validation"

Result:

[ABC-601] User authentication system

add password validation

How It Works

prepare-commit-msg Git hook
Extracts ticket ID pattern: ABC-123
Removes prefixes: feature/, bugfix/, etc.
Cleans up description text
Prepends to commit message

#!/bin/zsh
# Optimized for zsh with smart text processing
# Works with all commit types: -m, -a, interactive

Key Features

No API dependencies - works offline
Smart text processing - extracts meaningful descriptions
zsh optimized - uses native parameter expansion
Works everywhere - git commit, git commit -m, git commit -a -m
Clean formatting - proper spacing and capitalization

One hook, all use cases covered ✓

Quick Install

# Download the hook
curl -o .git/hooks/prepare-commit-msg \
https://raw.githubusercontent.com/jaredsohn/git-linear-hook/main/prepare-commit-msg

# Make it executable
chmod +x .git/hooks/prepare-commit-msg

# That's it! Start committing.

Global install: Set up once, works in all repos
Per-repo install: Just this repository

Live Demo

Let's see it in action!

Interactive demonstration of the hook working with:
• Different branch naming patterns
• Various commit methods
• Real-world scenarios

Thank You!

Questions?

GitHub: github.com/jaredsohn/git-linear-hook
Open Source: MIT License