This tool finds people that might be interested in a patch series, by going back through the history of each single hunk modified, and finding authored the code the patch is modifying.

It does this by running git blame incrementally on each hunk, and finding the relevant commits. The relevant commits are counted for each person, and people are only displayed if they pass a minimum threshold of participation.

For example:

Additionally, it’s able to parse commit trailers (e.g. Signed-off-by, Reviewed-by), and group the roles of each person.

For example:

Moreover, it has an option to output the list of commits, instead of the contributors, which allows you to easily find out the previous changes to the lines your patches modify.

Plus, when sending patches for review, you can configure git send-email to use git related to find relevant people that should be cc’ed:

A very similar tool but it gathers all commits, not just the ones related to a branch.

You can specify a file, directory, or pathspec, just like with git log.

If nothing is specified, it lists all the people that have had a role in the whole tree.

Install the parseopt gem:

Then simply copy the script anywhere in your $PATH and make it executable, or run make install which will install it by default to your ~/bin/ directory (make sure it’s in your $PATH).