PR Size Label

A lightweight GitHub Actions workflow that automatically labels Pull Requests by size.

Labels

Label	Lines Changed
size/XS	< 10
size/S	< 30
size/M	< 100
size/L	< 500
size/XL	< 1000
size/XXL	>= 1000

Usage

Copy .github/workflows/pr-size.yml into your repo. That's it.

The workflow triggers on pull_request: [opened, synchronize] and uses only the built-in gh CLI no third-party actions needed.

How It Works

1. Fetches additions + deletions via gh pr view
2. Picks a label based on total changed lines
3. Creates the label if it doesn't exist (with color)
4. Removes any previous size/* label
5. Applies the new one