Git Commit Message Trailers

I can never remember the list of git commit message trailers. This in itself is not a problem, as they are free-form, but it is of course good to follow conventions. For my reference, below is a list of commit message trailers that are frequently used:

• Signed-off-by: Author that signs acknowledges it is own work, proper license
• Co-authored-by: Multiple authors
• Reviewed-by: Reviewer
• Closes-Bug: Closed bug (followed by a number)
• Tested-By: Tester
• On-behalf-of: commits done on behalf of organizations
• Acked-by: “Owner of the affected code said ‘yep, looks good to me’”

Sources:

• StackOverflow: What is the Sign Off feature in Git for?
• Linux kernel commit message conventions
• Github: Creating a commit with multiple authors
• Git interpret trailers
• Gitlab Merge Request: Add banzai filter to detect commit message trailers and properly link the users
• Github: Creating a commit on behalf of an organization